chore: release 3.4.0

# Conflicts:
#	README.md

.github/workflows/portability.yml

@@ -21,15 +21,22 @@ env:
   PYTHONFAULTHANDLER: "1"
 
 # Time limit rule as in test.yml: ceil(1.5 x the slowest of three recent green runs on main) + 3
-# minutes, never under 5. Measured 2026-10-26 in test.yml on runs 40257217681 (3be0ada),
-# 40240706568 (fb9134f), 40228167328 (f9835aa), before these legs moved here in #420:
-#   slowest py3.10 on windows-latest: 12m43s / 15m54s / 14m53s -> 27 min
-#     (macos 6m14s-8m30s, windows 11m42s-15m54s)
+# minutes, never under 5, timed as whole-job wall time. One matrix job, so the slowest leg of each
+# run counts (tests/vendor/ci-workflow.test.mjs recomputes it, #493).
+# Measured 2026-10-29 on main runs 40935337099 (dd247e3), 40938407252 (dd247e3), 40941240624 (dd247e3):
+#   slowest leg: 7m24s (py3.12 windows) / 7m31s (py3.13 windows) / 7m32s (py3.14 windows) -> 15 min
+#     (windows 4m56s-7m32s, macos 4m39s-6m14s)
+#   native-trash (#499) has no green main runs yet: its probe, run 40949370943 (2026-10-29), took
+#     about 1 minute per macOS leg, so ceil(1.5 x 2) + 3 gives it 6 minutes (step 4). Recalibrate
+#     after three green runs.
+#   native-trash-linux (#543) has no green main runs yet: it installs the dev requirements and runs
+#     one test module, about 1 minute by the same estimate, so ceil(1.5 x 2) + 3 gives it 6 minutes.
+#     Recalibrate after three green runs.
 jobs:
   test:
     name: py${{ matrix.python-version }} on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
-    timeout-minutes: 27
+    timeout-minutes: 15
     strategy:
       fail-fast: false
       matrix:
@@ -51,5 +58,88 @@ jobs:
           python -m pip install --upgrade pip
           pip install -r requirements-dev.txt
 
+      # The runner's TEMP is on C:, the OS disk, where a flush took about 6 ms
+      # and a test database's create-to-delete about 111 ms; on the D: work
+      # disk the same took 0.5 ms and 23 ms (macOS: 19 ms). Tests write their
+      # databases under TEMP, so it moves to a folder on D: (measured in #487,
+      # run 40915866444). The runner's TEMP was an 8.3 short name
+      # (C:\Users\RUNNER~1\...), so the new one is spelled by its short name too
+      # and paths still have to be resolved. D: makes no short names by default
+      # (run 40922502209), so they are switched on for it first.
+      - name: Keep test files on the work disk (Windows)
+        if: runner.os == 'Windows'
+        shell: pwsh
+        run: |
+          fsutil 8dot3name set D: 0
+          $folder = New-Item -ItemType Directory -Force -Path (Join-Path $env:RUNNER_TEMP "PromptManagerTests")
+          $short = (New-Object -ComObject Scripting.FileSystemObject).GetFolder($folder.FullName).ShortPath
+          Write-Output "test TEMP: $short (long name $($folder.FullName))"
+          if ($short -eq $folder.FullName) { Write-Output "::warning::D: gave the test TEMP no 8.3 short name" }
+          "TEMP=$short" >> $env:GITHUB_ENV
+          "TMP=$short" >> $env:GITHUB_ENV
+
       - name: Run tests
+        env:
+          PM_TEST_SLOWEST: "40"
         run: python -m tests.run_suite -v
+
+  # The real Trash on both macOS CPUs (#499 design §10.2). It runs apart from the suite, so a red
+  # suite never skips the native proof.
+  native-trash:
+    name: native trash on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 6
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, macos-15-intel]
+
+    steps:
+      - uses: actions/checkout@v7
+
+      - name: Set up Python
+        uses: actions/setup-python@v7
+        with:
+          python-version: "3.12"
+
+      - name: Native trash proof
+        timeout-minutes: 4
+        env:
+          PM_NATIVE_TRASH: macos
+        run: python -m unittest tests.test_trash_macos_native tests.test_trash_macos -v
+
+  # The same tests as the fake mount table, on a real ext4 mount used as the output root (#543). A
+  # runner can mount with sudo; the tests run as the normal user, so owner and mode checks are real.
+  native-trash-linux:
+    name: native trash on a real mount
+    runs-on: ubuntu-latest
+    timeout-minutes: 6
+
+    steps:
+      - uses: actions/checkout@v7
+
+      - name: Set up Python
+        uses: actions/setup-python@v7
+        with:
+          python-version: "3.12"
+          cache: pip
+          cache-dependency-path: requirements-dev.txt
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements-dev.txt
+
+      - name: Mount an ext4 image
+        run: |
+          truncate -s 64M "$RUNNER_TEMP/drive.img"
+          mkfs.ext4 -q "$RUNNER_TEMP/drive.img"
+          mkdir "$RUNNER_TEMP/drive"
+          sudo mount -o loop "$RUNNER_TEMP/drive.img" "$RUNNER_TEMP/drive"
+          sudo rmdir "$RUNNER_TEMP/drive/lost+found"
+          sudo chown "$(id -u):$(id -g)" "$RUNNER_TEMP/drive"
+          findmnt "$RUNNER_TEMP/drive"
+
+      - name: Native trash proof
+        timeout-minutes: 4
+        run: PM_TRASH_MOUNT="$RUNNER_TEMP/drive" python -m unittest tests.test_trash_mount_root -v

.github/workflows/test.yml

@@ -28,8 +28,8 @@ env:
 #   py matrix, slowest py3.10 on windows-latest: 12m43s / 15m54s / 14m53s -> 27 min
 #     (ubuntu 5m27s-6m27s, macos 6m14s-8m30s, windows 11m42s-15m54s)
 #     3.10 and 3.11 left the matrix and 3.14 joined it in #356; re-measure after three green main runs.
-#     Windows and macOS moved to portability.yml (#420), which keeps this 27-minute limit; this
-#     Linux-only matrix keeps it too until it is re-measured.
+#     Windows and macOS moved to portability.yml (#420), which has its own measured limit (#493);
+#     this Linux-only matrix keeps 27 minutes until it is re-measured.
 #   real ComfyUI compatibility: 13m32s / 8m55s / 11m46s -> 24 min
 #   coverage gate (85%): 7m26s / 7m22s / 7m54s -> 15 min
 #   perf budget 30s / 29s / 27s, black and flake8 39s / 37s / 39s,

.github/workflows/viewerjs-check.yml

@@ -27,6 +27,20 @@ concurrency:
 # coverage shards 7m34s/6m04s/5m22s (tests 6m38s/4m53s/4m04s), merge 54s, firefox 7m57s/5m21s (tests
 # 7m08s/4m34s), webkit 8m16s/5m03s (tests 7m26s/3m58s); a cache miss adds up to 5m to npm ci, which
 # the 20-minute limits absorb.
+# Hangs (#425): a job killed at its limit keeps no log and skips its upload steps, so each browser
+# test step has its own timeout-minutes (18) below the job's 20. At the step limit, SIGTERM makes
+# tools/vendor/running-tests-reporter.mjs print the tests still running and hand over to Playwright's
+# interrupt, which writes the blob report; the always() uploads then run.
+# Measured on main (runs 40725289094, 40719375442, 40700439399): setup before the test step <= 52s,
+# uploads <= 35s; test steps up to 14m42s (webkit shard 1/2) and 13m05s for coverage (shard 1/3:
+# 12m53s, node units and the viewer suite before 11.8m of workflows), so coverage is the tight one
+# in its 18 minutes. This holds only when the npm cache hits: a cold cache adds up to 5m to npm ci,
+# and then the job limit can still end the job before the step limit does.
+# #473: firefox/webkit shard 1/2 reached its 18-minute step limit (queue run 40866252975: webkit 622 tests
+# passed in 17m56s, 48.5 worker-minutes vs 28.0 in shard 2/2; recent shard 1/2 jobs 13.7m-18.9m, shard 2/2
+# 7.3m-12.2m), because --shard splits by test count and the slow concept specs sort into shard 1. The page
+# workflows now run in three shards per browser with the limits unchanged; the per-shard times are
+# re-measured after three green main runs.
 jobs:
   frontend-coverage:
     name: frontend coverage (shard ${{ matrix.shard }}/3)
@@ -79,6 +93,7 @@ jobs:
       - if: matrix.shard == 3
         run: npm run --prefix tools/vendor test
       - name: Page workflows with coverage, shard ${{ matrix.shard }}/3
+        timeout-minutes: 18
         run: npm run --prefix tools/vendor test:coverage:shard -- ${{ matrix.shard }}/3
       - name: Upload raw coverage
         uses: actions/upload-artifact@v7
@@ -87,6 +102,7 @@ jobs:
           path: coverage/js/raw/
           if-no-files-found: error
           retention-days: 3
+      # Traces and the blob report (test-results/blob/) of a failed, timed-out or cancelled step.
       - name: Upload Chromium and touch traces
         if: always()
         uses: actions/upload-artifact@v7
@@ -164,7 +180,7 @@ jobs:
           retention-days: 14
 
   browser-workflows:
-    name: page workflows (${{ matrix.browser }}, shard ${{ matrix.shard }}/2)
+    name: page workflows (${{ matrix.browser }}, shard ${{ matrix.shard }}/3)
     # Merge queue, main and manual runs only (#420); pull requests run the Chromium/touch coverage shards.
     if: github.event_name != 'pull_request'
     runs-on: ubuntu-latest
@@ -183,7 +199,7 @@ jobs:
       fail-fast: false
       matrix:
         browser: [firefox, webkit]
-        shard: [1, 2]
+        shard: [1, 2, 3]
     steps:
       - uses: actions/checkout@v7
       # The image's own Python 3.12 and Node 24: setup-python/setup-node install the runner's toolcache
@@ -210,8 +226,10 @@ jobs:
           path: ~/.npm
           key: npm-${{ runner.os }}-playwright-v1.64.1-${{ hashFiles('tools/vendor/package-lock.json') }}
       - run: npm ci --prefix tools/vendor --ignore-scripts
-      - name: Page workflows in ${{ matrix.browser }}, shard ${{ matrix.shard }}/2
-        run: npm run --prefix tools/vendor test:workflows -- --project ${{ matrix.browser }} --shard ${{ matrix.shard }}/2
+      - name: Page workflows in ${{ matrix.browser }}, shard ${{ matrix.shard }}/3
+        timeout-minutes: 18
+        run: npm run --prefix tools/vendor test:workflows -- --project ${{ matrix.browser }} --shard ${{ matrix.shard }}/3
+      # Traces and the blob report (test-results/blob/) of a failed, timed-out or cancelled step.
       - name: Upload browser traces
         if: always()
         uses: actions/upload-artifact@v7

.gitignore

@@ -214,3 +214,7 @@ coverage/
 
 # Old library files a Move library renamed (never deleted; #249 S6b)
 *.moved-to-*
+
+# Per-install key behind the workspace scopes and cursors (#430)
+workspace-scope.key
+.workspace-scope.key.*.tmp

__init__.py

@@ -195,6 +195,26 @@ except Exception as e:
             f"Failed to register usage hook: {e}"
         )
 
+# A cached node counts what its last execution of the same text counted (#347).
+try:
+    from .py.config import server_instance
+    from .utils.cached_runs import register_cached_runs
+
+    register_cached_runs(server_instance, _db_factory)
+except Exception as e:
+    try:
+        from .utils.logging_config import get_logger
+
+        get_logger("prompt_manager.init").error(
+            f"Failed to register cached-run counting: {e}"
+        )
+    except Exception:
+        import logging
+
+        logging.getLogger("prompt_manager.init").error(
+            f"Failed to register cached-run counting: {e}"
+        )
+
 
 def _history_db_factory() -> "PromptDatabase":
     """Initialize history on its worker even if monitoring initialization failed."""

database/annotations.py

@@ -40,6 +40,7 @@ from .annotation_schema import (
     METADATA_TABLE,
 )
 from .autotag_schema import AUTOTAG_TABLE
+from .image_removal_schema import clear_marks
 from .library_commands import _UUID, LibraryCommandError, _validate_epoch
 from .models import utc_now_iso
 from .vocabulary import validate_vocabulary_tag_name
@@ -236,6 +237,9 @@ class AnnotationOperations:
 
     @staticmethod
     def _annotation_owner(conn: sqlite3.Connection, locator: str, now: str) -> str:
+        # A file with image tags or Needs review state is in the library: a
+        # removal mark never hides it (#480).
+        clear_marks(conn, [locator])
         row = conn.execute(_OWNER, (locator,)).fetchone()
         if row is not None:
             return row[0]

database/duplicate_copies.py

@@ -9,8 +9,12 @@ IMMEDIATE`` transaction, so no row ever names a deleted file:
   already links the kept copy: then its saved-pair links join that record
   and it is deleted;
 - its favorite;
+- its collection memberships (#331), joined onto the kept copy's as their
+  union under the same keys a favorite moves by;
 - its image tags (``media_image_tags`` of its byte record), joined onto the
   kept copy's byte record as their union, in order;
+- its own image category (#332), copied to the kept copy when that copy has
+  none; the removed copy's row is kept, so a give-back loses nothing;
 - its pending Needs review items, settled: only an item still ``pending`` at
   revision 0 with no decision row is removed (``review._SETTLE_ITEM``), so a
   decided item is never touched.
@@ -22,6 +26,8 @@ import os
 
 from .annotation_schema import BYTES_TABLE, FILES_TABLE
 from .annotations import _BUMP_INDEX
+from .image_categories import COPY_SQL as COPY_CATEGORY_SQL
+from .image_categories import copy_image_category
 from .models import normalize_image_path, utc_now_iso
 from .review import _BUMP_REVIEW_INDEX, _PENDING_OF_LOCATOR, _SETTLE_ITEM
 from .review_changes import notify_review_change
@@ -50,6 +56,15 @@ INSERT_FAVORITE_SQL = "INSERT OR IGNORE INTO image_favorites VALUES (?, ?, ?)"
 DELETE_FAVORITE_SQL = (
     "DELETE FROM image_favorites WHERE root_key = ? AND relative_path = ?"
 )
+COPY_MEMBERSHIPS_SQL = (
+    "INSERT OR IGNORE INTO image_collection_items "
+    "(collection_id, root_key, relative_path, added_at) "
+    "SELECT collection_id, ?, ?, added_at FROM image_collection_items "
+    "WHERE root_key = ? AND relative_path = ?"
+)
+DELETE_MEMBERSHIPS_SQL = (
+    "DELETE FROM image_collection_items WHERE root_key = ? AND relative_path = ?"
+)
 COPY_BYTE_SQL = (
     f"SELECT b.id FROM {FILES_TABLE} f JOIN {BYTES_TABLE} b "  # nosec B608
     "ON b.file_id=f.id WHERE f.locator=? AND b.sha256=?"
@@ -73,9 +88,12 @@ FILE_LINK_SQL = (
     DELETE_LINK_SQL,
     FAVORITE_SQL,
     DELETE_FAVORITE_SQL,
+    COPY_MEMBERSHIPS_SQL,
+    DELETE_MEMBERSHIPS_SQL,
     COPY_BYTE_SQL,
     COPY_TAG_COUNT_SQL,
     PENDING_COUNT_SQL,
+    COPY_CATEGORY_SQL,
 )
 
 
@@ -135,12 +153,17 @@ class DuplicateCopyOperations:
         by), ``targets`` (``{removed spelling: kept spelling}``, the spelling
         a moved record takes; else ``kept_path``), ``favorites`` (``(root key,
         removed key, kept root key, kept key)`` per listed root holding the
-        file), ``removed_locator``,
-        ``kept_locator``, ``sha256`` and the kept copy's ``kept_size`` and
-        ``kept_mtime_ns``. Returns ``{moved, merged, favorites, tags,
-        review}``.
+        file; they move its favorite and its collection memberships),
+        ``removed_locator``, ``kept_locator``, ``sha256`` and the kept copy's
+        ``kept_size`` and ``kept_mtime_ns``; ``categories``: ``(removed file
+        key, kept file key)`` pairs of the image categories (#332). Returns
+        ``{moved, merged, favorites, tags, review, collections, categories}``
+        (``collections``: the memberships inserted on the kept copy;
+        ``categories``: the image categories copied to the kept copy).
         """
-        counts = dict.fromkeys(("moved", "merged", "favorites", "tags", "review"), 0)
+        counts = dict.fromkeys(
+            ("moved", "merged", "favorites", "tags", "review", "collections"), 0
+        )
         kept_keys = [normalize_image_path(path) for path in move["kept"]]
         with self._pair_transaction() as conn:
             for spelled in dict.fromkeys(move["removed"]):
@@ -173,7 +196,12 @@ class DuplicateCopyOperations:
                     counts["moved"] += 1
             for favorite in move.get("favorites", ()):
                 counts["favorites"] += _move_favorite(conn, *favorite)
+                counts["collections"] += _move_memberships(conn, *favorite)
             counts["tags"] = self._move_copy_tags(conn, move)
+            counts["categories"] = sum(
+                copy_image_category(conn, removed, kept)
+                for removed, kept in move.get("categories", ())
+            )
             for (item_id,) in conn.execute(
                 _PENDING_OF_LOCATOR, (move["removed_locator"],)
             ).fetchall():
@@ -213,3 +241,12 @@ def _move_favorite(conn, root_key, removed_key, kept_root, kept_key):
     conn.execute(INSERT_FAVORITE_SQL, (kept_root, kept_key, row[0]))
     conn.execute(DELETE_FAVORITE_SQL, (root_key, removed_key))
     return 1
+
+
+def _move_memberships(conn, root_key, removed_key, kept_root, kept_key):
+    """Copy a removed copy's memberships to the kept copy; the rows inserted."""
+    inserted = conn.execute(
+        COPY_MEMBERSHIPS_SQL, (kept_root, kept_key, root_key, removed_key)
+    ).rowcount
+    conn.execute(DELETE_MEMBERSHIPS_SQL, (root_key, removed_key))
+    return inserted

database/execution_contexts.py

@@ -7,6 +7,11 @@ from typing import Callable, ContextManager, Iterator
 
 try:
     from ..utils.execution_history_events import RunFinish, encode_command
+    from ..utils.hashing import (
+        generate_prompt_hash,
+        stored_prompt_text,
+        stored_prompt_text_sql,
+    )
     from ..utils.execution_contexts import (
         CAPTURE_REASONS,
         ContextBundle,
@@ -15,6 +20,11 @@ try:
     )
 except ImportError:
     from utils.execution_history_events import RunFinish, encode_command
+    from utils.hashing import (
+        generate_prompt_hash,
+        stored_prompt_text,
+        stored_prompt_text_sql,
+    )
     from utils.execution_contexts import (
         CAPTURE_REASONS,
         ContextBundle,
@@ -134,7 +144,8 @@ def _insert_exact(
 
 def _role_hints(role: str) -> str:
     return (
-        f"SELECT r.{role}_prompt_id, tx.text_value "
+        f"SELECT r.{role}_prompt_id, tx.text_value, "
+        f"{stored_prompt_text_sql('tx.text_value')} "
         "FROM execution_run_contexts r "
         "JOIN execution_contexts c ON c.context_id = r.context_id "
         f"JOIN execution_prompt_snapshots s ON s.snapshot_id = c.{role}_snapshot_id "
@@ -146,57 +157,78 @@ def _role_hints(role: str) -> str:
 
 # Set form of the read-time prompt-hint rule in get_execution_contexts():
 # a stored role hint is live only in the current storage epoch, and only when
-# its exact raw snapshot text matches exactly one prompt, which is the hinted
-# one (_prompt_hint). Evaluated once per statement, never per prompt row.
+# the hinted prompt is the one match of _prompt_hint: by text (the raw
+# snapshot text or its stored form, outer whitespace stripped, #438), or, only
+# when no prompt has either text, by dedup hash (case folded too, #460).
+# The hash is a fallback, so a hint #438 kept is never made ambiguous.
+# Needs register_prompt_functions (pm_prompt_hash). The hint rows are the
+# outer loop (CROSS JOIN), so each prompts lookup is by index.
 # Defines the CTE ``live_hint_prompts(prompt_id)``; prefix it with WITH.
 LIVE_HINT_CTES = (
-    "stored_hints(prompt_id, raw) AS ("
+    "stored_hints(prompt_id, raw, stored) AS ("
     + _role_hints("positive")
     + " UNION "
     + _role_hints("negative")
-    + "), unique_hint_texts(prompt_id, raw) AS ("
-    "SELECT MIN(id), text COLLATE BINARY FROM prompts "
-    "WHERE text COLLATE BINARY IN (SELECT raw FROM stored_hints) "
-    "GROUP BY text COLLATE BINARY HAVING COUNT(*) = 1"
+    + "), hint_matches(prompt_id, raw, stored, match_id) AS ("
+    "SELECT h.prompt_id, h.raw, h.stored, p.id FROM stored_hints h "
+    "CROSS JOIN prompts p ON p.text COLLATE BINARY IN (h.raw, h.stored) "
+    "UNION ALL "
+    "SELECT h.prompt_id, h.raw, h.stored, p.id FROM stored_hints h "
+    "CROSS JOIN prompts p ON p.hash = pm_prompt_hash(h.raw) "
+    "WHERE NOT EXISTS (SELECT 1 FROM prompts q "
+    "WHERE q.text COLLATE BINARY IN (h.raw, h.stored))"
     "), live_hint_prompts(prompt_id) AS ("
-    "SELECT h.prompt_id FROM stored_hints h JOIN unique_hint_texts u "
-    "ON u.prompt_id = h.prompt_id AND u.raw = h.raw COLLATE BINARY)"
+    "SELECT prompt_id FROM hint_matches GROUP BY prompt_id, raw, stored "
+    "HAVING COUNT(*) = 1 AND MIN(match_id) = prompt_id)"
 )
 LIVE_HINT_PROMPT_IDS_SQL = (
     "WITH " + LIVE_HINT_CTES + " SELECT DISTINCT prompt_id FROM live_hint_prompts"
 )
 
+_BY_TEXT = "SELECT id FROM prompts WHERE text COLLATE BINARY IN (?,?) LIMIT 2"
+
+
+def _text_matches(conn: sqlite3.Connection, raw: str) -> list:
+    return [row[0] for row in conn.execute(_BY_TEXT, (raw, stored_prompt_text(raw)))]
+
 
 def _prompt_hint(conn: sqlite3.Connection, raw: str | None) -> int | None:
+    """The one prompt that stores ``raw`` (#438), else the one it counts toward.
+
+    By text first: ``raw`` or ``raw.strip()`` (the exact form keeps hints of
+    older rows that kept outer whitespace). Only when no prompt has either
+    text, by the dedup hash, which also folds case (#460).
+    """
     if raw is None:
         return None
-    rows = conn.execute(
-        "SELECT id FROM prompts WHERE text=? COLLATE BINARY LIMIT 2", (raw,)
-    ).fetchall()
-    return rows[0][0] if len(rows) == 1 else None
+    matches = _text_matches(conn, raw)
+    if not matches:
+        matches = [
+            row[0]
+            for row in conn.execute(
+                "SELECT id FROM prompts WHERE hash=? LIMIT 2",
+                (generate_prompt_hash(raw),),
+            )
+        ]
+    return matches[0] if len(matches) == 1 else None
 
 
 def _hints(
     conn: sqlite3.Connection, positive: str | None, negative: str | None
 ) -> tuple:
     pos_id, neg_id = _prompt_hint(conn, positive), _prompt_hint(conn, negative)
+    stored = None if negative is None else stored_prompt_text(negative)
     pair_id = None
+    # A known negative that names no prompt because several share its text
     negative_ambiguous = (
-        negative is not None
-        and neg_id is None
-        and conn.execute(
-            "SELECT 1 FROM prompts WHERE text=? COLLATE BINARY LIMIT 1", (negative,)
-        ).fetchone()
-        is not None
+        stored is not None and neg_id is None and bool(_text_matches(conn, negative))
     )
-    if pos_id is not None and negative is not None and not negative_ambiguous:
+    if pos_id is not None and stored is not None and not negative_ambiguous:
         rows = conn.execute(
-            "SELECT pp.id FROM prompt_pairs pp LEFT JOIN prompts n ON "
-            "n.id=pp.negative_prompt_id "
+            "SELECT pp.id FROM prompt_pairs pp "
             "WHERE pp.positive_prompt_id=? AND ((pp.negative_prompt_id IS NULL AND "
-            "?='') "
-            "OR (pp.negative_prompt_id=? AND n.text=? COLLATE BINARY)) LIMIT 2",
-            (pos_id, negative, neg_id, negative),
+            "?='') OR pp.negative_prompt_id=?) LIMIT 2",
+            (pos_id, stored, neg_id),
         ).fetchall()
         if len(rows) == 1:
             pair_id = rows[0][0]

database/health.py

@@ -23,10 +23,10 @@ from pathlib import PurePosixPath, PureWindowsPath
 from urllib.parse import quote
 
 try:
-    from ..utils.hashing import generate_prompt_hash
+    from ..utils.hashing import register_prompt_functions
     from .models import normalize_image_path
 except ImportError:
-    from utils.hashing import generate_prompt_hash
+    from utils.hashing import register_prompt_functions
     from database.models import normalize_image_path
 
 logger = logging.getLogger("prompt_manager.database.health")
@@ -125,12 +125,8 @@ def _foreign_keys(conn, _roots):
     )
 
 
-def _prompt_hash(text):
-    return generate_prompt_hash(text) if isinstance(text, str) else None
-
-
 def _canonical_hashes(conn, _roots):
-    conn.create_function("pm_prompt_hash", 1, _prompt_hash, deterministic=True)
+    register_prompt_functions(conn)  # pm_prompt_hash, shared with history (#460)
     return _counted(
         f"Prompt {row[0]}: the stored hash does not match its text"
         for row in conn.execute(

database/history_reads.py

@@ -15,6 +15,11 @@ from .execution_history import HistoryEpochChanged
 from .execution_outputs import _capture, _REFERENCE_COLUMNS
 from .library import _ELIGIBLE
 
+try:
+    from ..utils.hashing import prompt_key, stored_prompt_text
+except ImportError:
+    from utils.hashing import prompt_key, stored_prompt_text
+
 RunKey = tuple[int, str, int, str]
 
 
@@ -100,14 +105,43 @@ _ORDER = (
 )
 # Stale-hint rows a newest-pair lookup inspects before it reports none.
 _PAIR_RUN_CANDIDATES = 16
+# The recorded texts of one scope, as a JSON array parameter (_scope_text_ids).
+_IN_SCOPE = "IN (SELECT value FROM json_each(?))"
 _MATCHING = (
     "SELECT DISTINCT rc.run_id FROM execution_prompt_snapshots s "
     "JOIN execution_contexts c ON c.positive_snapshot_id=s.snapshot_id "
     "JOIN execution_run_contexts rc ON rc.context_id=c.context_id "
-    "WHERE s.raw_text_id=?"
+    f"WHERE s.raw_text_id {_IN_SCOPE}"
 )
 
 
+def _scope_text_ids(conn: sqlite3.Connection, key: str) -> str:
+    """Every recorded raw text whose prompt key is ``key``, as a JSON array.
+
+    A run keeps its exact raw text, while the Library saves and counts it as
+    the prompt with its key (outer whitespace #438, case #460). The values are
+    compared, never only their digests; ``pm_prompt_key`` is Python's key.
+    """
+    return json.dumps(
+        [
+            row[0]
+            for row in conn.execute(
+                # Only snapshot raw texts: effective and affix texts are skipped
+                "SELECT t.text_id FROM (SELECT DISTINCT raw_text_id AS text_id "
+                "FROM execution_prompt_snapshots) s CROSS JOIN "
+                "execution_context_texts t WHERE t.text_id=s.text_id AND "
+                "pm_prompt_key(t.text_value)=? COLLATE BINARY",
+                (key,),
+            )
+        ]
+    )
+
+
+def _scope_text_id(raw: str | None) -> str | None:
+    """The scope digest of a raw text: that of its prompt key."""
+    return None if raw is None else content_digest("text", (prompt_key(raw),))
+
+
 def _limit(limit: int) -> None:
     if type(limit) is not int or not 1 <= limit <= 100:
         raise ValueError("History limit must be an integer from 1 to 100")
@@ -255,8 +289,15 @@ class HistoryReadOperations:
         if saved is None:
             return None
         text = saved["text"]
-        raw_id = None if text is None else content_digest("text", (text,))
-        if after is not None and after.raw_text_id != raw_id:
+        raw_id = _scope_text_id(text)
+        # A position from before #460 names the scope by the stripped text
+        # alone; it is the same scope, so a page open across the upgrade resumes.
+        legacy_id = (
+            None
+            if text is None
+            else content_digest("text", (stored_prompt_text(text),))
+        )
+        if after is not None and after.raw_text_id not in (raw_id, legacy_id):
             raise ValueError("History position text scope changed")
         group = {
             "positive_id": positive_id,
@@ -273,18 +314,11 @@ class HistoryReadOperations:
             next_position=None,
             resume_position=None,
         )
-        if (
-            raw_id is None
-            or conn.execute(
-                "SELECT 1 FROM execution_context_texts WHERE text_id=? "
-                "AND text_value=? COLLATE BINARY",
-                (raw_id, text),
-            ).fetchone()
-            is None
-        ):
+        if raw_id is None:
             return result
+        scope = _scope_text_ids(conn, prompt_key(text))
         where = f"r.run_id IN ({_MATCHING})"
-        params = [raw_id]
+        params = [scope]
         if after is not None:
             where += f" AND {_KEY}<=(?,?,?,?)"
             params.extend(after.upper)
@@ -338,9 +372,9 @@ class HistoryReadOperations:
             "LEFT JOIN execution_prompt_snapshots n "
             "ON n.snapshot_id=c.negative_snapshot_id "
             "LEFT JOIN execution_context_texts t ON t.text_id=n.raw_text_id "
-            f"WHERE rc.run_id IN ({placeholders}) AND p.raw_text_id=? "
+            f"WHERE rc.run_id IN ({placeholders}) AND p.raw_text_id {_IN_SCOPE} "
             "ORDER BY rc.anchor_id COLLATE BINARY,rc.run_id COLLATE BINARY",
-            (*by_run, raw_id),
+            (*by_run, scope),
         )
         summaries = {}
         evidence_by_context = {}
@@ -438,6 +472,7 @@ class HistoryReadOperations:
         if saved["text"] is None:
             return {"run": None}
         epoch = self.get_execution_epoch()
+        key = prompt_key(saved["text"])
         candidates = conn.execute(
             "SELECT r.run_id,rc.anchor_id,rc.context_id,"
             "c.positive_snapshot_id,c.negative_snapshot_id "
@@ -445,10 +480,11 @@ class HistoryReadOperations:
             "ON rc.run_id=r.run_id JOIN execution_contexts c "
             "ON c.context_id=rc.context_id JOIN execution_prompt_snapshots s "
             "ON s.snapshot_id=c.positive_snapshot_id "
-            "WHERE s.raw_text_id=? AND rc.pair_id=? AND rc.reference_epoch=? "
+            f"WHERE s.raw_text_id {_IN_SCOPE} AND rc.pair_id=? "
+            "AND rc.reference_epoch=? "
             f"ORDER BY {_ORDER},rc.anchor_id COLLATE BINARY LIMIT ?",
             (
-                content_digest("text", (saved["text"],)),
+                _scope_text_ids(conn, key),
                 pair_id,
                 epoch,
                 _PAIR_RUN_CANDIDATES,
@@ -457,7 +493,11 @@ class HistoryReadOperations:
         for row in candidates:
             positive = _values(conn, row["positive_snapshot_id"])
             negative = _values(conn, row["negative_snapshot_id"])
-            if positive is None or positive["raw"] != saved["text"]:
+            if (
+                positive is None
+                or positive["raw"] is None
+                or prompt_key(positive["raw"]) != key
+            ):
                 continue
             hints = _hints(conn, positive["raw"], negative["raw"] if negative else None)
             if hints[2] == pair_id:
@@ -477,11 +517,9 @@ class HistoryReadOperations:
         snapshots = {
             row["anchor_id"]: row
             for row in conn.execute(
-                "SELECT rc.anchor_id,c.positive_snapshot_id,c.negative_snapshot_id,"
-                "p.raw_text_id AS positive_raw_text_id "
+                "SELECT rc.anchor_id,c.positive_snapshot_id,c.negative_snapshot_id "
                 "FROM execution_run_contexts rc JOIN execution_contexts c "
-                "ON c.context_id=rc.context_id LEFT JOIN execution_prompt_snapshots p "
-                "ON p.snapshot_id=c.positive_snapshot_id WHERE rc.run_id=?",
+                "ON c.context_id=rc.context_id WHERE rc.run_id=?",
                 (run_id,),
             )
         }
@@ -491,12 +529,12 @@ class HistoryReadOperations:
             context.update(
                 {
                     key: row[key]
-                    for key in (
-                        "positive_snapshot_id",
-                        "negative_snapshot_id",
-                        "positive_raw_text_id",
-                    )
-                }
+                    for key in ("positive_snapshot_id", "negative_snapshot_id")
+                },
+                # The history scope this context belongs to (#438)
+                positive_raw_text_id=_scope_text_id(
+                    (context["positive"] or {}).get("raw")
+                ),
             )
             pair = context["pair_id"]
             context["navigation"] = {

database/image_categories.py

@@ -0,0 +1,251 @@
+"""Image categories (#332): an image file's own category.
+
+An image shows its own category when it has one, otherwise the category its
+link supplies (its recipe's, else its positive prompt's); this table holds
+only the own values. A row is keyed by the file key: the deepest configured
+output source that contains the file (its real, case-normalized path) and the
+path below it, case-folded where the OS folds case
+(``py/api/images.py`` ``image_category_key``). Without nested sources the key
+equals a favorite's key. Nothing follows a moved file: its row stays and is
+hidden until a file appears at the same path again.
+
+Writes validate strictly (the route strips the value and applies
+``validate_category``). Startup checks the structure only, so a value saved
+under older rules never stops the library opening; restore also checks the
+values. Optional in old backups, required once a database is current.
+"""
+
+import re
+import sqlite3
+from typing import Iterable
+
+TABLE = "image_categories"
+INDEX = "idx_image_categories_category"
+MAX_KEY_LENGTH = 4096
+MAX_CATEGORY_LENGTH = 100
+_DDL = (
+    f"CREATE TABLE {TABLE} (root_key TEXT NOT NULL, relative_path TEXT NOT NULL, "
+    "category TEXT NOT NULL, updated_at TEXT NOT NULL, "
+    "PRIMARY KEY (root_key, relative_path))"
+)
+_INDEX_DDL = f"CREATE INDEX {INDEX} ON {TABLE}(category)"
+_AUTOINDEX = f"sqlite_autoindex_{TABLE}_1"
+_COLUMNS = (
+    ("root_key", "TEXT", 1, 1),
+    ("relative_path", "TEXT", 1, 2),
+    ("category", "TEXT", 1, 0),
+    ("updated_at", "TEXT", 1, 0),
+)
+# A category may not hold a character below U+0020 (validate_category).
+_CONTROL_GLOB = "*[" + "".join(chr(code) for code in range(1, 32)) + "]*"
+
+CATEGORY_OF_SQL = (
+    f"SELECT category FROM {TABLE} WHERE root_key = ? AND relative_path = ?"
+)
+CATEGORIES_OF_ROOT_SQL = (
+    f"SELECT relative_path, category FROM {TABLE} WHERE root_key = ?"
+)
+UPSERT_SQL = (
+    f"INSERT INTO {TABLE} (root_key, relative_path, category, updated_at) "
+    "VALUES (?, ?, ?, ?) ON CONFLICT(root_key, relative_path) "
+    "DO UPDATE SET category = excluded.category, updated_at = excluded.updated_at"
+)
+DELETE_SQL = f"DELETE FROM {TABLE} WHERE root_key = ? AND relative_path = ?"
+# The duplicate cleanup's copy (#332 MC11): the removed copy's row is copied
+# to the kept copy only when the kept copy has none; it is never deleted.
+COPY_SQL = (
+    f"INSERT OR IGNORE INTO {TABLE} (root_key, relative_path, category, updated_at) "
+    f"SELECT ?, ?, category, updated_at FROM {TABLE} "
+    "WHERE root_key = ? AND relative_path = ?"
+)
+STATEMENTS = (CATEGORY_OF_SQL, CATEGORIES_OF_ROOT_SQL, UPSERT_SQL, DELETE_SQL, COPY_SQL)
+
+
+def _compact(sql: str) -> str:
+    return re.sub(r"\s+", "", sql or "").lower()
+
+
+def _structure_error(
+    conn: sqlite3.Connection, allow_missing: bool, allow_missing_index: bool = False
+) -> str | None:
+    objects = conn.execute(
+        "SELECT type,name,sql FROM sqlite_master WHERE name=? "
+        "OR (type IN ('index','trigger') AND tbl_name=?)",
+        (TABLE, TABLE),
+    ).fetchall()
+    if not objects:
+        return None if allow_missing else "Missing image categories schema"
+    tables = [sql for kind, _name, sql in objects if kind == "table"]
+    others = {(kind, name) for kind, name, _sql in objects if kind != "table"}
+    expected = {("index", _AUTOINDEX), ("index", INDEX)}
+    # Before its install, a table without the category index is repaired by
+    # CREATE INDEX IF NOT EXISTS rather than refused.
+    if allow_missing_index and others == {("index", _AUTOINDEX)}:
+        expected = others
+    if len(tables) != 1 or others != expected:
+        return "Image categories name is reserved by an unsupported schema object"
+    if _compact(tables[0]) != _compact(_DDL):
+        return "Image categories has an invalid table definition"
+    index_sql = next((sql for kind, name, sql in objects if name == INDEX), None)
+    if ("index", INDEX) in expected and _compact(index_sql) != _compact(_INDEX_DDL):
+        return "Image categories has an invalid index"
+    autoindex_sql = next(sql for kind, name, sql in objects if name == _AUTOINDEX)
+    if autoindex_sql is not None:
+        return "Image categories has an invalid index"
+    columns = tuple(
+        (row[1], row[2].upper(), row[3], row[5])
+        for row in conn.execute(f"PRAGMA table_info({TABLE})")
+    )
+    if columns != _COLUMNS:
+        return "Image categories has invalid columns"
+    return None
+
+
+def _values_error(conn: sqlite3.Connection) -> str | None:
+    # Bytes bound characters from above (UTF-8 is at most 4 bytes each).
+    limit = MAX_KEY_LENGTH * 4
+    if conn.execute(
+        f"SELECT 1 FROM {TABLE} WHERE typeof(root_key) != 'text' "  # nosec B608
+        "OR typeof(relative_path) != 'text' OR typeof(category) != 'text' "
+        "OR typeof(updated_at) != 'text' "
+        f"OR length(CAST(root_key AS BLOB)) > {limit} "
+        f"OR length(CAST(relative_path AS BLOB)) > {limit} "
+        "OR length(CAST(updated_at AS BLOB)) > 64 "
+        "OR instr(CAST(category AS BLOB), x'00') > 0 "
+        f"OR length(category) < 1 OR length(category) > {MAX_CATEGORY_LENGTH} "
+        "OR category != TRIM(category) OR category GLOB ? LIMIT 1",
+        (_CONTROL_GLOB,),
+    ).fetchone():
+        return "Image categories contains invalid values"
+    for root, path in conn.execute(
+        f"SELECT CAST(root_key AS BLOB), CAST(relative_path AS BLOB) "  # nosec B608
+        f"FROM {TABLE} WHERE length(CAST(root_key AS BLOB)) > {MAX_KEY_LENGTH} "
+        f"OR length(CAST(relative_path AS BLOB)) > {MAX_KEY_LENGTH}"
+    ):
+        for raw in (root, path):
+            if len(bytes(raw).decode("utf-8", "replace")) > MAX_KEY_LENGTH:
+                return "Image categories contains invalid values"
+    return None
+
+
+def image_categories_schema_error(
+    conn: sqlite3.Connection,
+    *,
+    allow_missing: bool = True,
+    check_values: bool = True,
+) -> str | None:
+    """Reject an unsupported image categories schema (and, optionally, values).
+
+    Reads only. A missing table is acceptable for backups that predate it
+    unless ``allow_missing`` is false. ``check_values`` also refuses a stored
+    value the write path could never have written.
+    """
+    error = _structure_error(conn, allow_missing)
+    if error is not None or not check_values:
+        return error
+    exists = conn.execute(
+        "SELECT 1 FROM sqlite_master WHERE type='table' AND name=?", (TABLE,)
+    ).fetchone()
+    return _values_error(conn) if exists else None
+
+
+def migrate_image_categories(conn: sqlite3.Connection) -> None:
+    """Install the table and its index atomically; structure is checked
+    before and after. Reads only ``sqlite_master`` and this table's PRAGMAs
+    and writes only its own two objects (no backfill)."""
+    conn.execute("SAVEPOINT image_categories_schema")
+    try:
+        error = _structure_error(conn, True, allow_missing_index=True)
+        if error:
+            raise sqlite3.DatabaseError(error)
+        conn.execute(_DDL.replace("CREATE TABLE", "CREATE TABLE IF NOT EXISTS", 1))
+        conn.execute(
+            _INDEX_DDL.replace("CREATE INDEX", "CREATE INDEX IF NOT EXISTS", 1)
+        )
+        error = image_categories_schema_error(
+            conn, allow_missing=False, check_values=False
+        )
+        if error:
+            raise sqlite3.DatabaseError(error)
+        conn.execute("RELEASE image_categories_schema")
+    except BaseException:
+        conn.execute("ROLLBACK TO image_categories_schema")
+        conn.execute("RELEASE image_categories_schema")
+        raise
+
+
+def copy_image_category(conn: sqlite3.Connection, removed_key, kept_key) -> int:
+    """Give the kept copy the removed copy's category when it has none.
+
+    Runs inside the caller's transaction; never deletes the removed copy's
+    row, so a give-back or a failed delete loses nothing. Returns 1 when a
+    row was inserted, else 0.
+    """
+    if tuple(removed_key) == tuple(kept_key):
+        return 0
+    return max(conn.execute(COPY_SQL, (*kept_key, *removed_key)).rowcount, 0)
+
+
+class ImageCategoryOperations:
+    """PromptDatabase mixin: set, clear and read images' own categories.
+
+    Never reads or writes ``prompts``, ``prompt_pairs`` or
+    ``generated_images``.
+    """
+
+    def image_category(self, root_key: str, relative_key: str) -> str | None:
+        """One file's own category, or None."""
+        row = (
+            self.model.get_connection()
+            .execute(CATEGORY_OF_SQL, (root_key, relative_key))
+            .fetchone()
+        )
+        return row[0] if row else None
+
+    def own_categories_of(self, root_keys: Iterable[str]) -> dict:
+        """``{(root key, relative key): category}`` under the given sources.
+
+        One primary-key range read per source.
+        """
+        found = {}
+        conn = self.model.get_connection()
+        for root_key in dict.fromkeys(root_keys):
+            for relative, category in conn.execute(CATEGORIES_OF_ROOT_SQL, (root_key,)):
+                found[(root_key, relative)] = category
+        return found
+
+    def set_image_categories(self, file_keys, category: str) -> dict:
+        """Set *category* on every file key, in one transaction.
+
+        ``file_keys``: ``(root key, relative key)`` pairs from any number of
+        sources. Returns ``{updated, unchanged}``; a file that already had
+        exactly this value is ``unchanged`` and keeps its ``updated_at``.
+        """
+        from .image_removal_schema import clear_marks_of_keys
+        from .models import utc_now_iso  # models imports this module's schema
+
+        keys = list(dict.fromkeys(tuple(key) for key in file_keys))
+        counts = {"updated": 0, "unchanged": 0}
+        now = utc_now_iso()
+        with self._pair_transaction() as conn:
+            for key in keys:
+                row = conn.execute(CATEGORY_OF_SQL, key).fetchone()
+                if row is not None and row[0] == category:
+                    counts["unchanged"] += 1
+                    continue
+                conn.execute(UPSERT_SQL, (*key, category, now))
+                counts["updated"] += 1
+            clear_marks_of_keys(conn, keys)  # #480: a categorized file is listed
+        return counts
+
+    def clear_image_categories(self, file_keys) -> int:
+        """Remove the own category of every file key (one transaction).
+
+        Returns the number of rows removed.
+        """
+        keys = list(dict.fromkeys(tuple(key) for key in file_keys))
+        removed = 0
+        with self._pair_transaction() as conn:
+            for key in keys:
+                removed += conn.execute(DELETE_SQL, key).rowcount
+        return removed

database/image_collections.py

@@ -0,0 +1,492 @@
+"""Collections (#331): named, hand-picked groups of image files.
+
+A member names its file exactly as a favorite does (``image_favorites.py``):
+the source folder's real, case-normalized path (``root_key``) and the path
+below it (``relative_path``), both server-side only. A member whose file is
+moved, renamed or deleted outside PromptManager is kept and simply not listed;
+nothing follows a file to a new place.
+
+Names are trimmed with each run of whitespace collapsed to one space, 1 to 100
+characters without control characters; ``name_key`` (NFC of the case-folded
+NFC name) is UNIQUE, so names are unique ignoring case and Unicode form.
+
+The two tables install like ``image_favorites`` and ``saved_views``: optional
+in old backups, required once a database is current, created empty with no
+backfill. Startup checks only the structure, so a value saved under older
+rules never stops the library from opening; restore checks the values too,
+but never recomputes ``name_key`` (case tables differ between Python
+versions).
+"""
+
+import re
+import sqlite3
+import unicodedata
+from typing import Optional
+
+from .image_favorites import MAX_KEY_LENGTH
+
+COLLECTIONS_TABLE = "image_collections"
+ITEMS_TABLE = "image_collection_items"
+FILE_INDEX = "idx_image_collection_items_file"
+TABLES = (COLLECTIONS_TABLE, ITEMS_TABLE)
+MAX_NAME_LENGTH = 100
+_TIMESTAMP_BYTES = 64
+# A name key's byte bound: case folding expands a character to at most
+# three, each at most 4 UTF-8 bytes.
+_MAX_KEY_BYTES = MAX_NAME_LENGTH * 3 * 4
+_WHITESPACE = re.compile(r"\s+")
+
+_TABLE_DDL = {
+    COLLECTIONS_TABLE: (
+        f"CREATE TABLE {COLLECTIONS_TABLE} (id INTEGER PRIMARY KEY AUTOINCREMENT, "
+        "name TEXT NOT NULL, name_key TEXT NOT NULL UNIQUE, "
+        "created_at TEXT NOT NULL)"
+    ),
+    ITEMS_TABLE: (
+        f"CREATE TABLE {ITEMS_TABLE} (collection_id INTEGER NOT NULL REFERENCES "
+        f"{COLLECTIONS_TABLE}(id) ON DELETE CASCADE, root_key TEXT NOT NULL, "
+        "relative_path TEXT NOT NULL, added_at TEXT NOT NULL, "
+        "PRIMARY KEY (collection_id, root_key, relative_path))"
+    ),
+}
+_INDEX_DDL = f"CREATE INDEX {FILE_INDEX} ON {ITEMS_TABLE}(root_key, relative_path)"
+# (name, declared type, not null, default, primary key position)
+_COLUMNS = {
+    COLLECTIONS_TABLE: (
+        ("id", "INTEGER", 0, None, 1),
+        ("name", "TEXT", 1, None, 0),
+        ("name_key", "TEXT", 1, None, 0),
+        ("created_at", "TEXT", 1, None, 0),
+    ),
+    ITEMS_TABLE: (
+        ("collection_id", "INTEGER", 1, None, 1),
+        ("root_key", "TEXT", 1, None, 2),
+        ("relative_path", "TEXT", 1, None, 3),
+        ("added_at", "TEXT", 1, None, 0),
+    ),
+}
+# (column, parent table, parent column, on delete)
+_FOREIGN_KEYS = {
+    COLLECTIONS_TABLE: set(),
+    ITEMS_TABLE: {("collection_id", COLLECTIONS_TABLE, "id", "CASCADE")},
+}
+
+
+class CollectionInvalid(ValueError):
+    """A name, id or target breaks the write rules (a 400)."""
+
+
+def _has_control(text: str) -> bool:
+    """Any Unicode control character (category Cc: C0, DEL and C1)."""
+    return any(unicodedata.category(char) == "Cc" for char in text)
+
+
+def normalize_collection_name(name: object) -> str:
+    """The stored spelling of *name*: trimmed, whitespace collapsed, checked.
+
+    Raises ``CollectionInvalid`` unless the result is 1 to 100 characters
+    without control characters.
+    """
+    if not isinstance(name, str):
+        raise CollectionInvalid("Name must be a string")
+    collapsed = _WHITESPACE.sub(" ", name).strip()
+    if not 1 <= len(collapsed) <= MAX_NAME_LENGTH:
+        raise CollectionInvalid(f"Name must be 1 to {MAX_NAME_LENGTH} characters")
+    if _has_control(collapsed):
+        raise CollectionInvalid("Name contains control characters")
+    return collapsed
+
+
+def collection_name_key(name: str) -> str:
+    """The uniqueness key of a name: NFC of the case-folded NFC spelling."""
+    return unicodedata.normalize("NFC", unicodedata.normalize("NFC", name).casefold())
+
+
+def _compact(sql: str) -> str:
+    return re.sub(r"\s+", "", sql).lower()
+
+
+def _expected_catalog() -> set:
+    objects = {("table", name, _compact(sql)) for name, sql in _TABLE_DDL.items()}
+    objects.add(("index", FILE_INDEX, _compact(_INDEX_DDL)))
+    objects |= {("index", f"sqlite_autoindex_{table}_1", "") for table in TABLES}
+    return objects
+
+
+def _catalog(conn: sqlite3.Connection) -> list:
+    # sqlite_sequence (AUTOINCREMENT) is shared with other tables and ignored.
+    return conn.execute(
+        "SELECT type,name,sql FROM sqlite_master "
+        "WHERE name IN (?,?,?) OR tbl_name IN (?,?)",
+        (*TABLES, FILE_INDEX, *TABLES),
+    ).fetchall()
+
+
+def _structure_error(conn: sqlite3.Connection) -> Optional[str]:
+    for table, expected in _COLUMNS.items():
+        columns = tuple(
+            (row[1], row[2].upper(), row[3], row[4], row[5])
+            for row in conn.execute(f"PRAGMA table_info({table})")
+        )
+        if columns != expected:
+            return f"Image collections table {table} has invalid columns"
+        foreign_keys = {
+            (row[3], row[2], row[4], row[6])
+            for row in conn.execute(f"PRAGMA foreign_key_list({table})")
+        }
+        if foreign_keys != _FOREIGN_KEYS[table]:
+            return f"Image collections table {table} has invalid foreign keys"
+    return None
+
+
+def _decoded_too_long(conn, sql: str, limit: int) -> bool:
+    """Whether a byte-bounded candidate row decodes to over *limit* characters."""
+    for row in conn.execute(sql):
+        for raw in row:
+            if len(bytes(raw).decode("utf-8", "replace")) > limit:
+                return True
+    return False
+
+
+def _value_error(conn: sqlite3.Connection) -> Optional[str]:
+    # Only this module's constants are interpolated into the SQL below. Bytes
+    # bound characters from above (UTF-8 is at most 4 bytes each); the few
+    # candidates over the character bound are measured decoded in Python.
+    if conn.execute(
+        f"SELECT 1 FROM {COLLECTIONS_TABLE} WHERE "  # nosec B608
+        "typeof(id) != 'integer' OR typeof(name) != 'text' "
+        "OR typeof(name_key) != 'text' OR typeof(created_at) != 'text' "
+        f"OR length(CAST(name AS BLOB)) > {MAX_NAME_LENGTH * 4} "
+        "OR length(CAST(name_key AS BLOB)) = 0 "
+        f"OR length(CAST(name_key AS BLOB)) > {_MAX_KEY_BYTES} "
+        f"OR length(CAST(created_at AS BLOB)) > {_TIMESTAMP_BYTES} LIMIT 1"
+    ).fetchone():
+        return "Image collections contains invalid values"
+    # The key is not recomputed: Unicode case tables differ between Python
+    # versions, and a key written by another version must stay restorable.
+    # Its UNIQUE constraint keeps names distinct; writes compute it.
+    for (name,) in conn.execute(f"SELECT name FROM {COLLECTIONS_TABLE}"):  # nosec B608
+        if (
+            not 1 <= len(name) <= MAX_NAME_LENGTH
+            or _has_control(name)
+            or name != name.strip()
+        ):
+            return "Image collections contains invalid names"
+    limit = MAX_KEY_LENGTH * 4
+    if conn.execute(
+        f"SELECT 1 FROM {ITEMS_TABLE} WHERE "  # nosec B608
+        "typeof(collection_id) != 'integer' OR typeof(root_key) != 'text' "
+        "OR typeof(relative_path) != 'text' OR typeof(added_at) != 'text' "
+        f"OR length(CAST(root_key AS BLOB)) > {limit} "
+        f"OR length(CAST(relative_path AS BLOB)) > {limit} "
+        f"OR length(CAST(added_at AS BLOB)) > {_TIMESTAMP_BYTES} LIMIT 1"
+    ).fetchone() or _decoded_too_long(
+        conn,
+        f"SELECT CAST(root_key AS BLOB), CAST(relative_path AS BLOB) "  # nosec B608
+        f"FROM {ITEMS_TABLE} WHERE length(CAST(root_key AS BLOB)) > {MAX_KEY_LENGTH} "
+        f"OR length(CAST(relative_path AS BLOB)) > {MAX_KEY_LENGTH}",
+        MAX_KEY_LENGTH,
+    ):
+        return "Image collections contains invalid members"
+    if conn.execute(f"PRAGMA foreign_key_check({ITEMS_TABLE})").fetchone():
+        return "Image collections contains members of a missing collection"
+    return None
+
+
+def image_collections_schema_error(
+    conn: sqlite3.Connection,
+    *,
+    allow_missing: bool = True,
+    check_values: bool = True,
+) -> Optional[str]:
+    """Reject partial or unsupported collections schemas and invalid rows.
+
+    Reads only: nothing is ever repaired. A database without either table is
+    acceptable for backups that predate them unless ``allow_missing`` is
+    false. ``check_values=False`` (live startup) checks the structure only.
+    """
+    objects = _catalog(conn)
+    if not objects:
+        return None if allow_missing else "Missing image collections schema"
+    present = {name for kind, name, _sql in objects if kind == "table"}
+    if present != set(TABLES):
+        return "Incomplete image collections schema"
+    actual = {(kind, name, _compact(sql or "")) for kind, name, sql in objects}
+    if actual != _expected_catalog():
+        return "Image collections has an invalid schema definition"
+    error = _structure_error(conn)
+    if error or not check_values:
+        return error
+    return _value_error(conn)
+
+
+def migrate_image_collections(conn: sqlite3.Connection) -> None:
+    """Install both tables atomically; validate before and after creating them."""
+    conn.execute("SAVEPOINT image_collections_schema")
+    try:
+        error = image_collections_schema_error(conn, check_values=False)
+        if error:
+            raise sqlite3.DatabaseError(error)
+        for sql in _TABLE_DDL.values():
+            conn.execute(sql.replace("CREATE TABLE", "CREATE TABLE IF NOT EXISTS", 1))
+        conn.execute(_INDEX_DDL.replace("INDEX", "INDEX IF NOT EXISTS", 1))
+        error = image_collections_schema_error(
+            conn, allow_missing=False, check_values=False
+        )
+        if error:
+            raise sqlite3.DatabaseError(error)
+        conn.execute("RELEASE image_collections_schema")
+    except BaseException:
+        conn.execute("ROLLBACK TO image_collections_schema")
+        conn.execute("RELEASE image_collections_schema")
+        raise
+
+
+class CollectionMissing(LookupError):
+    """No collection has the id (a 404 ``collection-not-found``)."""
+
+
+class CollectionNameTaken(ValueError):
+    """Another collection already has the name's key (a 409 ``name-taken``)."""
+
+    def __init__(self, collection_id: int):
+        super().__init__("Another collection has this name")
+        self.collection_id = collection_id
+
+
+class CollectionFilesMissing(LookupError):
+    """A new name with nothing to insert (a 404 ``files-not-found``)."""
+
+
+LIST_SQL = f"SELECT id, name FROM {COLLECTIONS_TABLE} ORDER BY name_key, id"
+GET_SQL = f"SELECT id, name FROM {COLLECTIONS_TABLE} WHERE id = ?"
+BY_KEY_SQL = f"SELECT id, name FROM {COLLECTIONS_TABLE} WHERE name_key = ?"
+MEMBERS_SQL = (
+    f"SELECT relative_path FROM {ITEMS_TABLE} "
+    "WHERE collection_id = ? AND root_key = ?"
+)
+ROOT_MEMBERS_SQL = (
+    f"SELECT collection_id, relative_path FROM {ITEMS_TABLE} WHERE root_key = ?"
+)
+COUNTS_SQL = (
+    f"SELECT c.id, (SELECT COUNT(*) FROM {ITEMS_TABLE} i "
+    f"WHERE i.collection_id = c.id) FROM {COLLECTIONS_TABLE} c"
+)
+FILE_SQL = (
+    f"SELECT collection_id FROM {ITEMS_TABLE} "
+    "WHERE root_key = ? AND relative_path = ? ORDER BY collection_id"
+)
+# Every read, for the EXPLAIN QUERY PLAN check: none scans the items table and
+# only the two whole-list reads (LIST_SQL, COUNTS_SQL) scan the collections.
+READ_SQL = (
+    LIST_SQL,
+    GET_SQL,
+    BY_KEY_SQL,
+    MEMBERS_SQL,
+    ROOT_MEMBERS_SQL,
+    COUNTS_SQL,
+    FILE_SQL,
+)
+_INSERT_ITEM_SQL = f"INSERT OR IGNORE INTO {ITEMS_TABLE} VALUES (?, ?, ?, ?)"
+_DELETE_ITEM_SQL = (
+    f"DELETE FROM {ITEMS_TABLE} "
+    "WHERE collection_id = ? AND root_key = ? AND relative_path = ?"
+)
+
+
+def _collection_id(value: object) -> int:
+    if type(value) is not int or not 1 <= value <= 999_999_999:
+        raise CollectionInvalid("Collection id must be a positive integer")
+    return value
+
+
+def _items(items: object) -> list:
+    """Distinct ``(root key, relative key)`` pairs, in order."""
+    if not isinstance(items, (list, tuple)):
+        raise CollectionInvalid("Items must be a list")
+    found = []
+    for item in items:
+        if (
+            not isinstance(item, (list, tuple))
+            or len(item) != 2
+            or not all(
+                isinstance(part, str) and 1 <= len(part) <= MAX_KEY_LENGTH
+                for part in item
+            )
+        ):
+            raise CollectionInvalid("Each item is a root key and a relative key")
+        found.append((item[0], item[1]))
+    return list(dict.fromkeys(found))
+
+
+def _row(row) -> dict:
+    return {"id": row[0], "name": row[1]}
+
+
+class ImageCollectionOperations:
+    """PromptDatabase mixin: collections and their members.
+
+    Each write runs in its own ``BEGIN IMMEDIATE`` transaction
+    (``_pair_transaction``), so two tabs creating one name are serialized.
+    """
+
+    def list_collections(self) -> list[dict]:
+        """Every collection ``{id, name}`` in name-key order, then id."""
+        rows = self.model.get_connection().execute(LIST_SQL)
+        return [_row(row) for row in rows]
+
+    def get_collection(self, collection_id: int) -> Optional[dict]:
+        """``{id, name}`` of one collection, or None."""
+        row = (
+            self.model.get_connection()
+            .execute(GET_SQL, (_collection_id(collection_id),))
+            .fetchone()
+        )
+        return _row(row) if row else None
+
+    def collection_exists(self, collection_id: int) -> bool:
+        return self.get_collection(collection_id) is not None
+
+    def collection_members(self, collection_id: int, root_key: str) -> set[str]:
+        """The relative keys stored for one collection under one source."""
+        rows = self.model.get_connection().execute(
+            MEMBERS_SQL, (_collection_id(collection_id), root_key)
+        )
+        return {path for (path,) in rows}
+
+    def root_collection_members(self, root_key: str) -> dict[int, set[str]]:
+        """``{collection id: relative keys}`` stored under one source."""
+        found: dict[int, set[str]] = {}
+        for collection_id, path in self.model.get_connection().execute(
+            ROOT_MEMBERS_SQL, (root_key,)
+        ):
+            found.setdefault(collection_id, set()).add(path)
+        return found
+
+    def collection_count_snapshot(self, root_keys: list) -> tuple[dict, dict]:
+        """``({root key: {id: relative keys}}, {id: stored rows})`` read in
+        one read transaction, so a write between the reads cannot skew them.
+        """
+        conn = self.model.get_connection()
+        if conn.in_transaction:
+            raise RuntimeError("Collection counts require their own transaction")
+        conn.execute("BEGIN")
+        try:
+            members = {}
+            for root_key in dict.fromkeys(root_keys):
+                found: dict[int, set[str]] = {}
+                for collection_id, path in conn.execute(ROOT_MEMBERS_SQL, (root_key,)):
+                    found.setdefault(collection_id, set()).add(path)
+                members[root_key] = found
+            stored = {cid: count for cid, count in conn.execute(COUNTS_SQL)}
+        finally:
+            conn.rollback()  # it only read
+        return members, stored
+
+    def collection_counts(self) -> dict[int, int]:
+        """``{collection id: stored rows}`` for every collection."""
+        rows = self.model.get_connection().execute(COUNTS_SQL)
+        return {collection_id: count for collection_id, count in rows}
+
+    def file_collections(self, root_key: str, relative_path: str) -> list[int]:
+        """Ids of the collections holding one file."""
+        rows = self.model.get_connection().execute(FILE_SQL, (root_key, relative_path))
+        return [collection_id for (collection_id,) in rows]
+
+    def add_to_collection(
+        self, *, items: object, collection_id: object = None, name: object = None
+    ) -> dict:
+        """Add files to an existing id or a name; create the name when needed.
+
+        A name whose key exists uses that collection; otherwise a collection
+        is created only when at least one item is inserted. Returns
+        ``{collection, created, added, already}``.
+        """
+        from .image_removal_schema import clear_marks_of_keys
+        from .models import utc_now_iso  # models imports this module's schema
+
+        if (collection_id is None) == (name is None):
+            raise CollectionInvalid("Give either a collection id or a name")
+        pairs = _items(items)
+        if name is not None:
+            spelled = normalize_collection_name(name)
+        else:
+            collection_id = _collection_id(collection_id)
+        now = utc_now_iso()
+        with self._pair_transaction() as conn:
+            created = False
+            if name is not None:
+                row = conn.execute(
+                    BY_KEY_SQL, (collection_name_key(spelled),)
+                ).fetchone()
+                if row is None:
+                    if not pairs:
+                        raise CollectionFilesMissing("Nothing to add")
+                    cursor = conn.execute(
+                        f"INSERT INTO {COLLECTIONS_TABLE} "  # nosec B608
+                        "(name, name_key, created_at) VALUES (?, ?, ?)",
+                        (spelled, collection_name_key(spelled), now),
+                    )
+                    row, created = (cursor.lastrowid, spelled), True
+            else:
+                row = conn.execute(GET_SQL, (collection_id,)).fetchone()
+                if row is None:
+                    raise CollectionMissing("No such collection")
+            collection = _row(row)
+            added = sum(
+                conn.execute(
+                    _INSERT_ITEM_SQL, (collection["id"], root, path, now)
+                ).rowcount
+                for root, path in pairs
+            )
+            clear_marks_of_keys(conn, pairs)  # #480: a collected file is listed
+        return {
+            "collection": collection,
+            "created": created,
+            "added": added,
+            "already": len(pairs) - added,
+        }
+
+    def remove_from_collection(self, collection_id: object, items: object) -> dict:
+        """Remove files from one collection; ``{collection, removed}``."""
+        collection_id = _collection_id(collection_id)
+        pairs = _items(items)
+        with self._pair_transaction() as conn:
+            row = conn.execute(GET_SQL, (collection_id,)).fetchone()
+            if row is None:
+                raise CollectionMissing("No such collection")
+            removed = sum(
+                conn.execute(_DELETE_ITEM_SQL, (collection_id, root, path)).rowcount
+                for root, path in pairs
+            )
+        return {"collection": _row(row), "removed": removed}
+
+    def rename_collection(self, collection_id: object, name: object) -> dict:
+        """The renamed ``{id, name}``; a case variant of its own name is fine."""
+        collection_id = _collection_id(collection_id)
+        spelled = normalize_collection_name(name)
+        key = collection_name_key(spelled)
+        with self._pair_transaction() as conn:
+            if conn.execute(GET_SQL, (collection_id,)).fetchone() is None:
+                raise CollectionMissing("No such collection")
+            taken = conn.execute(BY_KEY_SQL, (key,)).fetchone()
+            if taken is not None and taken[0] != collection_id:
+                raise CollectionNameTaken(taken[0])
+            conn.execute(
+                f"UPDATE {COLLECTIONS_TABLE} SET name = ?, name_key = ? "  # nosec B608
+                "WHERE id = ?",
+                (spelled, key, collection_id),
+            )
+        return {"id": collection_id, "name": spelled}
+
+    def delete_collection(self, collection_id: object) -> bool:
+        """Delete one collection and its members (never a file). True."""
+        collection_id = _collection_id(collection_id)
+        with self._pair_transaction() as conn:
+            cursor = conn.execute(
+                f"DELETE FROM {COLLECTIONS_TABLE} WHERE id = ?",  # nosec B608
+                (collection_id,),
+            )
+            if cursor.rowcount == 0:
+                raise CollectionMissing("No such collection")
+        return True

database/image_favorites.py

@@ -104,11 +104,14 @@ class ImageFavoriteOperations:
         """Mark one file as a favorite; repeating it is a no-op. Returns True."""
         from .models import utc_now_iso  # models imports this module's schema
 
+        from .image_removal_schema import clear_marks_of_keys
+
         with self.model.get_connection() as conn:
             conn.execute(
                 "INSERT OR IGNORE INTO image_favorites VALUES (?, ?, ?)",
                 (root_key, relative_path, utc_now_iso()),
             )
+            clear_marks_of_keys(conn, [(root_key, relative_path)])  # #480
         return True
 
     def clear_image_favorite(self, root_key: str, relative_path: str) -> bool:

database/image_removal.py

@@ -0,0 +1,348 @@
+"""Remove a file's records from the library, and its removal mark (#480).
+
+A *removal* describes one physical file the way the API resolved it from the
+walked listing (``py/api/image_delete.py``):
+
+- ``spellings``: every path string records may name it by
+  (``duplicate_spellings.Spellings.of``);
+- ``locator``: its private canonical locator;
+- ``favorites``: ``(root key, relative key)`` under every listed root holding
+  it, the keys of its favorite and its collection memberships;
+- ``category``: its own category's file key, or None.
+
+``remove_image_records`` deletes, in one ``BEGIN IMMEDIATE`` transaction:
+
+- its image records (``generated_images``) under every spelling, plus legacy
+  rows matched by ``image_path``; their saved-pair links go by cascade and the
+  workflow documents they held are released;
+- the image tags and auto-tag marks of its byte records. The annotation file
+  and byte rows go too, unless a Needs review item still cites them
+  (``media_review_items.byte_id`` is ``ON DELETE RESTRICT``): a decided or
+  revised item keeps its decision;
+- its pending, undecided Needs review items (settled as duplicate removal
+  settles them);
+- its own category, favorite and collection memberships.
+
+With ``mark`` it also writes the file's removal mark (library-only removal):
+the file stays on disk, hidden until its bytes change. Prompts, recorded runs
+and the media file itself are never touched here.
+"""
+
+import os
+
+from .annotation_schema import BYTES_TABLE, FILES_TABLE
+from .annotations import _BUMP_INDEX
+from .autotag_schema import AUTOTAG_TABLE
+from .duplicate_copies import (
+    DELETE_FAVORITE_SQL,
+    DELETE_LINK_SQL,
+    DELETE_MEMBERSHIPS_SQL,
+    _file_link_rows,
+)
+from .image_categories import DELETE_SQL as DELETE_CATEGORY_SQL
+from .image_removal_schema import (
+    META_TABLE,
+    TABLE,
+    bump_generation,
+    clear_marks,
+    has_marks_table,
+    mark_of,
+    write_mark as _write_mark,
+)
+from .library import display_title
+from .models import utc_now_iso
+from .review import _BUMP_REVIEW_INDEX, _PENDING_OF_LOCATOR, _SETTLE_ITEM
+from .review_changes import notify_review_change
+from .workflow_documents import documents_of_rows, release_documents
+
+BYTES_OF_LOCATOR_SQL = (
+    f"SELECT b.id FROM {FILES_TABLE} f JOIN {BYTES_TABLE} b "  # nosec B608
+    "ON b.file_id=f.id WHERE f.locator=?"
+)
+TAG_COUNT_SQL = "SELECT COUNT(*) FROM media_image_tags WHERE byte_id=?"
+AUTOTAG_COUNT_SQL = (
+    f"SELECT COUNT(*) FROM {AUTOTAG_TABLE} WHERE byte_id=?"  # nosec B608
+)
+CLEAR_TAGS_SQL = "DELETE FROM media_image_tags WHERE byte_id=?"
+CLEAR_AUTOTAG_SQL = f"DELETE FROM {AUTOTAG_TABLE} WHERE byte_id=?"  # nosec B608
+BUMP_TAG_REVISION_SQL = (
+    f"UPDATE {BYTES_TABLE} SET tag_revision=tag_revision+1 WHERE id=?"  # nosec B608
+)
+REVIEW_REFS_SQL = (
+    f"SELECT COUNT(*) FROM {FILES_TABLE} f "  # nosec B608
+    f"JOIN {BYTES_TABLE} b ON b.file_id=f.id "
+    "JOIN media_review_items i ON i.byte_id=b.id WHERE f.locator=?"
+)
+DELETE_FILE_SQL = f"DELETE FROM {FILES_TABLE} WHERE locator=?"  # nosec B608
+FILE_EXISTS_SQL = f"SELECT 1 FROM {FILES_TABLE} WHERE locator=?"  # nosec B608
+FAVORITE_EXISTS_SQL = (
+    "SELECT COUNT(*) FROM image_favorites WHERE root_key=? AND relative_path=?"
+)
+MEMBERSHIP_COUNT_SQL = (
+    "SELECT COUNT(*) FROM image_collection_items WHERE root_key=? AND relative_path=?"
+)
+CATEGORY_EXISTS_SQL = (
+    "SELECT COUNT(*) FROM image_categories WHERE root_key=? AND relative_path=?"
+)
+PAIR_LINK_COUNT_SQL = "SELECT COUNT(*) FROM image_prompt_pairs WHERE image_id=?"
+PROMPT_LINKS_SQL = "SELECT id FROM generated_images WHERE prompt_id=?"
+PROMPT_TITLE_SQL = (
+    "SELECT p.text, s.title FROM prompts p "
+    "LEFT JOIN prompt_library_state s ON s.prompt_id=p.id WHERE p.id=?"
+)
+MARKS_SQL = f"SELECT locator, size, mtime_ns FROM {TABLE}"  # nosec B608
+REVISION_SQL = f"SELECT revision FROM {META_TABLE} WHERE singleton_id=1"  # nosec B608
+MAX_ORPHAN_TITLES = 3
+RECORD_KINDS = (
+    "prompt_links",
+    "pair_links",
+    "image_tags",
+    "auto_tagged",
+    "categories",
+    "collections",
+    "favorites",
+    "review_items",
+)
+
+
+def _link_ids(conn, removal):
+    """``{image id: prompt id}`` of the records naming the file, any spelling."""
+    found = {}
+    for spelled in dict.fromkeys(removal["spellings"]):
+        for image_id, prompt_id in _file_link_rows(conn, spelled):
+            found[image_id] = prompt_id
+    return found
+
+
+def _byte_ids(conn, locator):
+    return [row[0] for row in conn.execute(BYTES_OF_LOCATOR_SQL, (locator,))]
+
+
+def file_locator(path) -> str:
+    """The locator of an absolute path (``normcase(realpath)``)."""
+    return os.path.normcase(os.path.realpath(str(path)))
+
+
+def removed_from_library(conn, path) -> bool:
+    """Whether *path* is hidden by a removal mark whose bytes still match.
+
+    A mark whose file changed (other size or ``mtime_ns``) or is gone is
+    stale: it is deleted on *conn* (the caller's write transaction), and the
+    file is not hidden.
+    """
+    locator = file_locator(path)
+    mark = mark_of(conn, locator)
+    if mark is None:
+        return False
+    try:
+        info = os.lstat(path)
+    except OSError:
+        clear_marks(conn, [locator])
+        return False
+    if (info.st_size, info.st_mtime_ns) == tuple(mark):
+        return True
+    clear_marks(conn, [locator])
+    return False
+
+
+def mark_hides(marks: dict, locator: str, path) -> bool:
+    """Whether a removal mark in *marks* hides the file at *path* (blocking).
+
+    *marks* is ``{locator: (size, mtime_ns)}``. The mark of *locator* hides
+    the file while ``os.lstat(path)`` still has the size and ``mtime_ns`` it
+    was removed with; a file that cannot be looked at is not hidden.
+    """
+    mark = marks.get(locator)
+    if mark is None:
+        return False
+    try:
+        info = os.lstat(path)
+    except OSError:
+        return False
+    return (info.st_size, info.st_mtime_ns) == tuple(mark)
+
+
+def write_mark(conn, locator, size, mtime_ns):
+    _write_mark(conn, locator, size, mtime_ns, utc_now_iso())
+
+
+class ImageRemovalOperations:
+    """PromptDatabase mixin: remove a file's records; removal marks."""
+
+    def count_removal_records(self, removals) -> dict:
+        """Counts of what removing *removals* deletes, in one read snapshot.
+
+        ``{records: {kind: n}, orphaned_prompts: {count, titles}}``: prompts
+        whose every image record is among these files lose their last image
+        (they stay in the Library).
+        """
+        from .maintenance import _read_snapshot
+
+        def read(conn):
+            totals = dict.fromkeys(RECORD_KINDS, 0)
+            links = {}
+            for removal in removals:
+                found = _link_ids(conn, removal)
+                links.update(found)
+                for image_id in found:
+                    totals["pair_links"] += conn.execute(
+                        PAIR_LINK_COUNT_SQL, (image_id,)
+                    ).fetchone()[0]
+                tagged = autotagged = False
+                for byte_id in _byte_ids(conn, removal["locator"]):
+                    tagged |= bool(
+                        conn.execute(TAG_COUNT_SQL, (byte_id,)).fetchone()[0]
+                    )
+                    autotagged |= bool(
+                        conn.execute(AUTOTAG_COUNT_SQL, (byte_id,)).fetchone()[0]
+                    )
+                totals["image_tags"] += int(tagged)
+                totals["auto_tagged"] += int(autotagged)
+                totals["review_items"] += len(
+                    conn.execute(_PENDING_OF_LOCATOR, (removal["locator"],)).fetchall()
+                )
+                totals["favorites"] += int(
+                    any(
+                        conn.execute(FAVORITE_EXISTS_SQL, key).fetchone()[0]
+                        for key in removal["favorites"]
+                    )
+                )
+                totals["collections"] += sum(
+                    conn.execute(MEMBERSHIP_COUNT_SQL, key).fetchone()[0]
+                    for key in removal["favorites"]
+                )
+                if removal.get("category"):
+                    totals["categories"] += conn.execute(
+                        CATEGORY_EXISTS_SQL, removal["category"]
+                    ).fetchone()[0]
+            totals["prompt_links"] = len(links)
+            return {
+                "records": totals,
+                "orphaned_prompts": self._orphaned_prompts(conn, links),
+            }
+
+        return _read_snapshot(self.model.db_path, read)
+
+    @staticmethod
+    def _orphaned_prompts(conn, links):
+        removed = set(links)
+        orphans = []
+        for prompt_id in dict.fromkeys(links.values()):
+            remaining = [
+                row[0]
+                for row in conn.execute(PROMPT_LINKS_SQL, (prompt_id,))
+                if row[0] not in removed
+            ]
+            if not remaining:
+                orphans.append(prompt_id)
+        titles = []
+        for prompt_id in orphans[:MAX_ORPHAN_TITLES]:
+            row = conn.execute(PROMPT_TITLE_SQL, (prompt_id,)).fetchone()
+            if row is not None:
+                titles.append(display_title((row[1],), row[0]) or "")
+        return {"count": len(orphans), "titles": titles}
+
+    def remove_image_records(self, removal, *, mark=None) -> dict:
+        """Delete every record of one file (one transaction); see the module.
+
+        ``mark``: ``(size, mtime_ns)`` to write the file's removal mark, or
+        None (the file was moved to the trash). Returns the counts deleted.
+        """
+        counts = dict.fromkeys(RECORD_KINDS, 0)
+        locator = removal["locator"]
+        with self._pair_transaction() as conn:
+            links = _link_ids(conn, removal)
+            if links:
+                documents = documents_of_rows(conn, "id", list(links))
+                for image_id in links:
+                    counts["pair_links"] += conn.execute(
+                        PAIR_LINK_COUNT_SQL, (image_id,)
+                    ).fetchone()[0]
+                    conn.execute(DELETE_LINK_SQL, (image_id,))
+                release_documents(conn, documents)
+            counts["prompt_links"] = len(links)
+            counts.update(self._remove_annotations(conn, locator))
+            for key in removal["favorites"]:
+                counts["favorites"] += conn.execute(DELETE_FAVORITE_SQL, key).rowcount
+                counts["collections"] += conn.execute(
+                    DELETE_MEMBERSHIPS_SQL, key
+                ).rowcount
+            if removal.get("category"):
+                counts["categories"] += conn.execute(
+                    DELETE_CATEGORY_SQL, tuple(removal["category"])
+                ).rowcount
+            if mark is not None:
+                write_mark(conn, locator, *mark)
+        if counts["review_items"]:
+            notify_review_change(self.model.db_path)
+        return counts
+
+    def _remove_annotations(self, conn, locator) -> dict:
+        """Tags, auto-tag marks, pending review items and, when free, the rows."""
+        counts = {"image_tags": 0, "auto_tagged": 0, "review_items": 0}
+        bytes_ = _byte_ids(conn, locator)
+        for byte_id in bytes_:
+            tags = conn.execute(CLEAR_TAGS_SQL, (byte_id,)).rowcount
+            autotags = conn.execute(CLEAR_AUTOTAG_SQL, (byte_id,)).rowcount
+            if tags:
+                conn.execute(BUMP_TAG_REVISION_SQL, (byte_id,))
+            counts["image_tags"] |= bool(tags)
+            counts["auto_tagged"] |= bool(autotags)
+        for (item_id,) in conn.execute(_PENDING_OF_LOCATOR, (locator,)).fetchall():
+            counts["review_items"] += conn.execute(_SETTLE_ITEM, (item_id,)).rowcount
+        if counts["review_items"]:
+            conn.execute(_BUMP_REVIEW_INDEX)
+        if conn.execute(FILE_EXISTS_SQL, (locator,)).fetchone():
+            if not conn.execute(REVIEW_REFS_SQL, (locator,)).fetchone()[0]:
+                conn.execute(DELETE_FILE_SQL, (locator,))
+            conn.execute(_BUMP_INDEX)
+        counts["image_tags"] = int(counts["image_tags"])
+        counts["auto_tagged"] = int(counts["auto_tagged"])
+        return counts
+
+    def removal_marks(self) -> dict:
+        """``{locator: (size, mtime_ns)}`` of every removal mark (one read)."""
+        conn = self.model.get_connection()
+        if not has_marks_table(conn):
+            return {}
+        return {row[0]: (row[1], row[2]) for row in conn.execute(MARKS_SQL)}
+
+    def removal_revision(self) -> int:
+        conn = self.model.get_connection()
+        if not has_marks_table(conn):
+            return 0
+        row = conn.execute(REVISION_SQL).fetchone()
+        return row[0] if row else 0
+
+    def clear_removal_marks(self, locators) -> int:
+        """Show these files again (their marks go); the count removed."""
+        locators = list(locators)
+        if not locators:
+            return 0
+        with self._pair_transaction() as conn:
+            removed = clear_marks(conn, locators)
+        # #498: again after the commit, so a reader that cached the marks
+        # between the in-transaction bump and the commit reloads them.
+        bump_generation()
+        return removed
+
+    def clear_hiding_marks(self, files) -> set:
+        """Delete the marks that still hide their file (#498, Return to library).
+
+        *files* are ``(locator, path)`` pairs. In one ``BEGIN IMMEDIATE``
+        transaction each mark is read again and deleted only while the file at
+        *path* still has its size and ``mtime_ns``. Returns the locators whose
+        marks went.
+        """
+        cleared = set()
+        files = list(files)
+        if not files:
+            return cleared
+        with self._pair_transaction() as conn:
+            for locator, path in files:
+                mark = mark_of(conn, locator)
+                if mark is not None and mark_hides({locator: mark}, locator, path):
+                    cleared.add(locator)
+            clear_marks(conn, sorted(cleared))
+        bump_generation()
+        return cleared

database/image_removal_schema.py

@@ -0,0 +1,213 @@
+"""Removal marks (#480): files removed from the library that stay on disk.
+
+``image_removals`` holds one row per hidden file: its private canonical
+locator (the ``media_annotation_files.locator`` form) and the ``size`` and
+``mtime_ns`` it had when it was removed. A file at that locator with other
+bytes is a new file and shows again. ``image_removals_meta`` is one row, the
+marks revision, bumped in the same transaction as every mark change so the
+workspace listing caches can tell marks changed.
+
+The group installs like ``image_favorites``: optional in old backups,
+required once a database is current. Older builds ignore it.
+"""
+
+import os
+import re
+import sqlite3
+
+from .annotation_schema import MAX_LOCATOR_LENGTH
+
+TABLE = "image_removals"
+META_TABLE = "image_removals_meta"
+TABLES = (TABLE, META_TABLE)
+_TABLE_DDL = {
+    TABLE: (
+        f"CREATE TABLE {TABLE} (locator TEXT PRIMARY KEY, "
+        "size INTEGER NOT NULL CHECK(size>=0), mtime_ns INTEGER NOT NULL, "
+        "removed_at TEXT NOT NULL) WITHOUT ROWID"
+    ),
+    META_TABLE: (
+        f"CREATE TABLE {META_TABLE} (singleton_id INTEGER PRIMARY KEY "
+        "CHECK(singleton_id=1), revision INTEGER NOT NULL DEFAULT 0 "
+        "CHECK(revision>=0))"
+    ),
+}
+_SEED_META = (
+    f"INSERT OR IGNORE INTO {META_TABLE} (singleton_id, revision) VALUES (1, 0)"
+)
+_COLUMNS = {
+    TABLE: (
+        ("locator", "TEXT", 1, 1),
+        ("size", "INTEGER", 1, 0),
+        ("mtime_ns", "INTEGER", 1, 0),
+        ("removed_at", "TEXT", 1, 0),
+    ),
+    META_TABLE: (
+        ("singleton_id", "INTEGER", 0, 1),
+        ("revision", "INTEGER", 1, 0),
+    ),
+}
+_AUTOINDEX = f"sqlite_autoindex_{TABLE}_1"
+
+
+def _compact(sql: str) -> str:
+    return re.sub(r"\s+", "", sql or "").lower()
+
+
+def _structure_error(conn: sqlite3.Connection, allow_missing: bool) -> str | None:
+    rows = conn.execute(
+        "SELECT type,name,tbl_name,sql FROM sqlite_master WHERE name IN (?,?) "
+        "OR tbl_name IN (?,?)",
+        TABLES + TABLES,
+    ).fetchall()
+    if not rows:
+        return None if allow_missing else "Missing image removal marks schema"
+    tables = {name: sql for kind, name, _tbl, sql in rows if kind == "table"}
+    others = {(kind, name) for kind, name, _tbl, _sql in rows if kind != "table"}
+    if set(tables) != set(TABLES) or others - {("index", _AUTOINDEX)}:
+        return "Image removal marks name is reserved by an unsupported schema object"
+    for table in TABLES:
+        if _compact(tables[table]) != _compact(_TABLE_DDL[table]):
+            return "Image removal marks have an invalid table definition"
+        columns = tuple(
+            (row[1], row[2].upper(), row[3], row[5])
+            for row in conn.execute(f"PRAGMA table_info({table})")
+        )
+        if columns != _COLUMNS[table]:
+            return "Image removal marks have invalid columns"
+    return None
+
+
+def _values_error(conn: sqlite3.Connection) -> str | None:
+    limit = MAX_LOCATOR_LENGTH * 4
+    if conn.execute(
+        f"SELECT 1 FROM {TABLE} WHERE typeof(locator) != 'text' "  # nosec B608
+        f"OR length(CAST(locator AS BLOB)) > {limit} OR locator = '' "
+        "OR typeof(size) != 'integer' OR typeof(mtime_ns) != 'integer' "
+        "OR typeof(removed_at) != 'text' OR length(CAST(removed_at AS BLOB)) > 64 "
+        "LIMIT 1"
+    ).fetchone():
+        return "Image removal marks contain invalid values"
+    meta = conn.execute(
+        f"SELECT singleton_id, typeof(revision) FROM {META_TABLE}"  # nosec B608
+    ).fetchall()
+    if meta != [(1, "integer")]:
+        return "Image removal marks have an invalid revision"
+    return None
+
+
+def image_removals_schema_error(
+    conn: sqlite3.Connection, *, allow_missing: bool = True
+) -> str | None:
+    """Reject unsupported schemas and invalid persisted values (reads only)."""
+    error = _structure_error(conn, allow_missing)
+    if error:
+        return error
+    exists = conn.execute(
+        "SELECT 1 FROM sqlite_master WHERE type='table' AND name=?", (TABLE,)
+    ).fetchone()
+    return _values_error(conn) if exists else None
+
+
+def migrate_image_removals(conn: sqlite3.Connection) -> None:
+    """Install both tables atomically; validate before and after."""
+    conn.execute("SAVEPOINT image_removals_schema")
+    try:
+        error = image_removals_schema_error(conn)
+        if error:
+            raise sqlite3.DatabaseError(error)
+        for sql in _TABLE_DDL.values():
+            conn.execute(sql.replace("CREATE TABLE", "CREATE TABLE IF NOT EXISTS", 1))
+        conn.execute(_SEED_META)
+        error = image_removals_schema_error(conn, allow_missing=False)
+        if error:
+            raise sqlite3.DatabaseError(error)
+        conn.execute("RELEASE image_removals_schema")
+    except BaseException:
+        conn.execute("ROLLBACK TO image_removals_schema")
+        conn.execute("RELEASE image_removals_schema")
+        raise
+
+
+_UNMARK_SQL = f"DELETE FROM {TABLE} WHERE locator=?"  # nosec B608
+_MARK_SQL = (
+    f"INSERT OR REPLACE INTO {TABLE} "  # nosec B608
+    "(locator, size, mtime_ns, removed_at) VALUES (?, ?, ?, ?)"
+)
+_MARK_OF_SQL = f"SELECT size, mtime_ns FROM {TABLE} WHERE locator=?"  # nosec B608
+BUMP_MARKS_SQL = (
+    f"UPDATE {META_TABLE} SET revision=revision+1 WHERE singleton_id=1"  # nosec B608
+)
+
+
+# Bumped whenever this process writes or clears a mark (even in a transaction
+# that later rolls back): readers that cache the marks reload when it moves.
+_generation = 0
+
+
+def generation() -> int:
+    """The marks generation of this process (see ``_generation``)."""
+    return _generation
+
+
+def _bump() -> None:
+    global _generation
+    _generation += 1
+
+
+def bump_generation() -> None:
+    """Move the generation after a commit (a cached read made before it reloads)."""
+    _bump()
+
+
+def has_marks_table(conn: sqlite3.Connection) -> bool:
+    return (
+        conn.execute(
+            "SELECT 1 FROM sqlite_master WHERE type='table' AND name=?", (TABLE,)
+        ).fetchone()
+        is not None
+    )
+
+
+def locator_of_key(root_key: str, relative_key: str) -> str:
+    """The locator of a favorite-style file key (root key + relative key)."""
+    return os.path.normcase(os.path.join(root_key, *relative_key.split("/")))
+
+
+def mark_of(conn: sqlite3.Connection, locator: str):
+    """``(size, mtime_ns)`` of the file's removal mark, or None."""
+    if not has_marks_table(conn):
+        return None
+    row = conn.execute(_MARK_OF_SQL, (locator,)).fetchone()
+    return (row[0], row[1]) if row else None
+
+
+def write_mark(
+    conn: sqlite3.Connection, locator: str, size: int, mtime_ns: int, now: str
+):
+    conn.execute(_MARK_SQL, (locator, int(size), int(mtime_ns), now))
+    conn.execute(BUMP_MARKS_SQL)
+    _bump()
+
+
+def clear_marks(conn: sqlite3.Connection, locators) -> int:
+    """Delete the marks of *locators* on *conn* (no commit); the count removed.
+
+    Every record write for a file calls this (#480): a file with records is
+    in the library, so it is never hidden.
+    """
+    locators = list(dict.fromkeys(locators))
+    if not locators or not has_marks_table(conn):
+        return 0
+    removed = 0
+    for locator in locators:
+        removed += conn.execute(_UNMARK_SQL, (locator,)).rowcount
+    if removed:
+        conn.execute(BUMP_MARKS_SQL)
+        _bump()
+    return removed
+
+
+def clear_marks_of_keys(conn: sqlite3.Connection, file_keys) -> int:
+    """``clear_marks`` for favorite-style ``(root key, relative key)`` pairs."""
+    return clear_marks(conn, [locator_of_key(*key) for key in file_keys])

database/library.py

@@ -5,7 +5,9 @@ import sqlite3
 from collections.abc import Iterator
 from contextlib import contextmanager
 
+from .library_folders import folder_condition, list_library_folders
 from .library_tokens import library_edit_token
+from .prompt_archive import ARCHIVED, SHELVED
 
 _ELIGIBLE = """(EXISTS(SELECT 1 FROM prompt_pairs ep WHERE ep.positive_prompt_id=p.id)
  OR EXISTS(SELECT 1 FROM generated_images eg WHERE eg.prompt_id=p.id)
@@ -105,6 +107,12 @@ ARCHIVE_SCOPES = {
 }
 
 
+# Shelves (#443): the parents on the shelf, or the archived ones.
+PARENT_SCOPES = {"active": SHELVED, "archived": ARCHIVED}
+# A positive pair owner that is on the shelf, as a condition on alias pp.
+SHELVED_PAIR = SHELVED.replace("p.id", "pp.positive_prompt_id")
+
+
 def _escape(value: str) -> str:
     return value.replace("\\", "\\\\").replace("%", "\\%").replace("_", "\\_")
 
@@ -121,7 +129,54 @@ def _archive(value: str) -> str:
     return ARCHIVE_SCOPES[value]
 
 
-def _filter(text: str, category: str | None, tags: list[str]) -> tuple[str, list]:
+# How the Tags filter matches (#444): every tag (AND), any of them (OR), or
+# parents without any tag.
+TAG_MODES = ("all", "any", "untagged")
+# A parent that no tag's Browse returns (#444 "Untagged prompts"): no tag of its
+# own and no active pair carrying one. The vocabulary's untagged count uses it too.
+UNTAGGED = (
+    "NOT EXISTS(SELECT 1 FROM prompt_tags ut WHERE ut.prompt_id=p.id) "
+    "AND NOT EXISTS(SELECT 1 FROM prompt_pairs up JOIN prompt_pair_tags upt "
+    "ON upt.pair_id=up.id WHERE up.positive_prompt_id=p.id AND up.archived=0)"
+)
+
+
+def _tag_mode(tag_mode: object, tags: list[str]) -> str:
+    if not isinstance(tag_mode, str) or tag_mode not in TAG_MODES:
+        raise ValueError("tag_mode must be one of " + ", ".join(TAG_MODES))
+    if tag_mode == "untagged" and tags:
+        raise ValueError("Untagged prompts cannot also filter by tags")
+    return tag_mode
+
+
+def _tag_conditions(tags: list[str], any_tag: bool) -> tuple[list, list, list]:
+    """Parent-arm and pair-arm tag conditions and the tags' parameters."""
+    parent_exists = (
+        "EXISTS(SELECT 1 FROM prompt_tags pt JOIN tags t ON t.id=pt.tag_id "
+        "WHERE pt.prompt_id=p.id AND t.name{test})"
+    )
+    pair_exists = (
+        "EXISTS(SELECT 1 FROM prompt_pair_tags pt JOIN tags t ON t.id=pt.tag_id "
+        "WHERE pt.pair_id=pp.id AND t.name{test})"
+    )
+    if any_tag and tags:
+        # One condition per arm: the card, or one active pair, carries any tag.
+        test = " IN (" + ",".join("?" for _ in tags) + ")"
+        return [parent_exists.format(test=test)], [pair_exists.format(test=test)], tags
+    return (
+        [parent_exists.format(test="=?") for _ in tags],
+        [pair_exists.format(test="=?") for _ in tags],
+        tags,
+    )
+
+
+def _filter(
+    text: str,
+    category: str | None,
+    tags: list[str],
+    tag_mode: str = "all",
+    folder_prefixes: list[str] | None = None,
+) -> tuple[str, list]:
     if not isinstance(text, str) or len(text) > 500:
         raise ValueError("Search text must be a string of at most 500 characters")
     if category is not None and (not isinstance(category, str) or len(category) > 200):
@@ -132,6 +187,8 @@ def _filter(text: str, category: str | None, tags: list[str]) -> tuple[str, list
         or any(not isinstance(tag, str) or not tag or len(tag) > 200 for tag in tags)
     ):
         raise ValueError("Invalid library tags")
+    mode = _tag_mode(tag_mode, tags)
+    untagged = mode == "untagged"
     parent, pair, parent_params, pair_params = [], ["pp.archived=0"], [], []
     if text:
         parent.append("(p.text LIKE ? ESCAPE '\\' OR ls.title LIKE ? ESCAPE '\\')")
@@ -146,17 +203,11 @@ def _filter(text: str, category: str | None, tags: list[str]) -> tuple[str, list
         pair.append("pp.category=?")
         parent_params.append(category)
         pair_params.append(category)
-    for tag in tags:
-        parent.append(
-            "EXISTS(SELECT 1 FROM prompt_tags pt JOIN tags t ON t.id=pt.tag_id "
-            "WHERE pt.prompt_id=p.id AND t.name=?)"
-        )
-        pair.append(
-            "EXISTS(SELECT 1 FROM prompt_pair_tags pt JOIN tags t ON t.id=pt.tag_id "
-            "WHERE pt.pair_id=pp.id AND t.name=?)"
-        )
-        parent_params.append(tag)
-        pair_params.append(tag)
+    parent_tags, pair_tags, tag_params = _tag_conditions(tags, mode == "any")
+    parent.extend(parent_tags)
+    pair.extend(pair_tags)
+    parent_params.extend(tag_params)
+    pair_params.extend(tag_params)
     condition = (
         "("
         + (" AND ".join(parent) or "1=1")
@@ -168,7 +219,17 @@ def _filter(text: str, category: str | None, tags: list[str]) -> tuple[str, list
         + " AND ".join(pair)
         + ")"
     )
-    return f"({_ELIGIBLE}) AND ({condition})", [*parent_params, *pair_params]
+    if untagged:
+        # A whole-card condition: inside the parent-or-pair OR an untagged pair
+        # would let a tagged parent through.
+        condition = f"({condition}) AND {UNTAGGED}"
+    params = [*parent_params, *pair_params]
+    if folder_prefixes:
+        # A whole-card condition around both arms: images link to the parent.
+        folder, folder_params = folder_condition(folder_prefixes)
+        condition = f"({condition}) AND {folder}"
+        params.extend(folder_params)
+    return f"({_ELIGIBLE}) AND ({condition})", params
 
 
 class LibraryOperations:
@@ -216,6 +277,8 @@ class LibraryOperations:
         rows = conn.execute(
             "SELECT p.id,p.text,ls.title,p.category,p.rating,p.notes,p.created_at,"
             "p.run_count,p.last_used_at,"
+            + ARCHIVED
+            + " AS archived,"
             + (f"{sort_expression} AS _sort," if sort_expression else "")
             + "(SELECT COUNT(*) FROM prompt_pairs v WHERE v.positive_prompt_id=p.id "
             "AND v.archived=0) AS variant_count,"
@@ -239,6 +302,7 @@ class LibraryOperations:
             # Usage is shown, never compared: the token hashes owner fields only.
             row["run_count"] = row["run_count"] if type(row["run_count"]) is int else 0
             row["last_used_at"] = utc_iso(row["last_used_at"])
+            row["archived"] = bool(row["archived"])
             row["edit_token"] = library_edit_token(epoch, row)
         return result
 
@@ -251,14 +315,21 @@ class LibraryOperations:
         text: str = "",
         category: str | None = None,
         tags: list[str] | None = None,
+        tag_mode: str = "all",
+        folder_prefixes: list[str] | None = None,
         sort: str = "newest",
         limit: int = 40,
         after: dict | None = None,
+        shelf: str = "active",
     ) -> dict:
         _limit(limit)
         if sort not in _ORDERS:
             raise ValueError("Unknown library sort order")
-        where, params = _filter(text, category, [] if tags is None else tags)
+        if not isinstance(shelf, str) or shelf not in PARENT_SCOPES:
+            raise ValueError("shelf must be active or archived")
+        where, params = _filter(
+            text, category, [] if tags is None else tags, tag_mode, folder_prefixes
+        )
         if after is not None:
             if (
                 not isinstance(after, dict)
@@ -270,15 +341,18 @@ class LibraryOperations:
             ceiling = after["ceiling"]
         where += " AND p.id<=?"
         params.append(ceiling)
-        # One SELECT counts the filtered parents and their active variants.
-        total, variant_total = conn.execute(
-            "SELECT COUNT(*),COALESCE(SUM((SELECT COUNT(*) FROM prompt_pairs v "
-            "WHERE v.positive_prompt_id=p.id AND v.archived=0)),0) FROM "
-            + _FROM
-            + " WHERE "
-            + where,
+        # One SELECT counts the filtered parents of this scope, their active
+        # variants, and the filtered archived parents (Show archived, #443).
+        scope = PARENT_SCOPES[shelf]
+        total, variant_total, archived_total = conn.execute(
+            f"SELECT COALESCE(SUM({scope}),0),"
+            f"COALESCE(SUM(CASE WHEN {scope} THEN (SELECT COUNT(*) "
+            "FROM prompt_pairs v WHERE v.positive_prompt_id=p.id "
+            "AND v.archived=0) ELSE 0 END),0),"
+            f"COALESCE(SUM({ARCHIVED}),0) FROM " + _FROM + " WHERE " + where,
             params,
         ).fetchone()
+        where += f" AND {scope}"
         expression, direction = _ORDERS[sort]
         if after is not None:
             operator = ">" if direction == "ASC" else "<"
@@ -311,6 +385,9 @@ class LibraryOperations:
             "items": rows,
             "total": total,
             "variant_total": variant_total,
+            "archived_total": archived_total,
+            # Echoed so a client can tell this read applied its tag match.
+            "tag_mode": tag_mode,
             "has_more": has_more,
             "next_key": next_key,
         }
@@ -321,9 +398,12 @@ class LibraryOperations:
         text: str = "",
         category: str | None = None,
         tags: list[str] | None = None,
+        tag_mode: str = "all",
+        folder_prefixes: list[str] | None = None,
         sort: str = "newest",
         limit: int = 40,
         after: dict | None = None,
+        shelf: str = "active",
     ) -> dict:
         with self.library_snapshot(include_ceiling=True) as (conn, epoch, ceiling):
             return self._list_library(
@@ -333,9 +413,12 @@ class LibraryOperations:
                 text=text,
                 category=category,
                 tags=tags,
+                tag_mode=tag_mode,
+                folder_prefixes=folder_prefixes,
                 sort=sort,
                 limit=limit,
                 after=after,
+                shelf=shelf,
             )
 
     def _is_library_positive(self, conn: sqlite3.Connection, positive_id: int) -> bool:
@@ -463,9 +546,13 @@ class LibraryOperations:
             "categories": [row["category"] for row in rows],
         }
 
-    def get_library_options(self) -> dict:
+    def get_library_options(self, folder_roots=None) -> dict:
+        """Categories; with *folder_roots* (root spellings) also ``folders``."""
         with self.library_snapshot() as (conn, epoch, _ceiling):
-            return self._get_library_options(conn, epoch)
+            result = self._get_library_options(conn, epoch)
+            if folder_roots is not None:
+                result["folders"] = list_library_folders(conn, folder_roots, _ELIGIBLE)
+            return result
 
     def get_library_previews(self, positive_ids: list[int]) -> dict[int, list[dict]]:
         """Read at most two links per parent in one bounded page query."""
@@ -576,7 +663,9 @@ class LibraryOperations:
             owners = {}
             order = []
             for row in conn.execute(
-                "SELECT p.id,p.text,ls.title,p.category,p.rating,p.notes FROM "
+                "SELECT p.id,p.text,ls.title,p.category,p.rating,p.notes,"
+                + ARCHIVED
+                + " AS archived FROM "
                 + _FROM
                 + " WHERE "
                 + _ELIGIBLE
@@ -589,6 +678,7 @@ class LibraryOperations:
                     "tags": [],
                     "rating": row["rating"],
                     "notes": row["notes"],
+                    "archived": bool(row["archived"]),
                     "variants": [],
                 }
                 order.append(row["id"])
@@ -633,8 +723,9 @@ class LibraryOperations:
         """System › Overview counts from one snapshot, writing nothing.
 
         ``positive_prompts`` and ``negative_variants`` are the unfiltered
-        Library's ``total`` and ``variant_total``: eligible parents and active
-        pairs (every pair's positive is eligible). ``images`` counts indexed
+        Library's ``total`` and ``variant_total``: eligible parents on the
+        shelf (not archived, #443) and their active pairs (every pair's
+        positive is eligible). ``images`` counts indexed
         ``generated_images`` rows, not files on disk. An image has no rating
         of its own (it shows its linked prompt's), so ``rated_images`` counts
         the indexed images whose linked prompt is rated. ``review_pending`` is
@@ -642,8 +733,14 @@ class LibraryOperations:
         """
         with self.library_snapshot() as (conn, _epoch, _ceiling):
             row = conn.execute(
-                "SELECT (SELECT COUNT(*) FROM prompts p WHERE " + _ELIGIBLE + "),"
-                "(SELECT COUNT(*) FROM prompt_pairs WHERE archived=0),"
+                "SELECT (SELECT COUNT(*) FROM prompts p WHERE "
+                + _ELIGIBLE
+                + " AND "
+                + SHELVED
+                + "),"
+                "(SELECT COUNT(*) FROM prompt_pairs pp WHERE pp.archived=0 AND "
+                + SHELVED_PAIR
+                + "),"
                 "(SELECT COUNT(*) FROM generated_images),"
                 "(SELECT COUNT(*) FROM generated_images gi JOIN prompts r "
                 "ON r.id=gi.prompt_id WHERE r.rating IS NOT NULL),"

database/library_archive.py

@@ -0,0 +1,473 @@
+"""Delete selected Library prompts; archive the paired ones (#443, D152).
+
+A selected Library parent is classified, in this order, as ``not_found``
+(missing, or not a Library parent), ``protected`` (tagged ``__protected__``;
+never changed), ``already_archived``, ``archive`` (the positive or negative of
+any saved pair, archived pair or not: archiving hides it from the shelf and
+removes nothing) or ``delete`` (in no pair: deleted exactly as the legacy
+delete does, through ``delete_prompt_rows``). Every command checks the
+storage epoch first and runs in one ``BEGIN IMMEDIATE`` transaction.
+
+The write executes what the user reviewed: it is given the reviewed archive
+and delete lists, and deletes only reviewed deletes the route backed up
+(``candidates``) whose fingerprint is unchanged since that backup.
+"""
+
+import hashlib
+import json
+import re
+import sqlite3
+from typing import Iterable
+
+from .library import _ELIGIBLE
+from .library_commands import _validate_bulk_ids, _validate_epoch
+from .models import utc_now_iso
+from .prompt_archive import ARCHIVED as _ARCHIVED
+from .prompt_archive import TABLE as ARCHIVE
+from .workflow_documents import documents_of_rows, release_documents
+
+try:
+    from ..utils.hashing import generate_prompt_hash
+except ImportError:
+    from utils.hashing import generate_prompt_hash
+
+# Ids bound per statement: the pair check binds each id twice, which stays
+# under SQLite's historical 999-variable limit (maintenance.py ID_BATCH).
+ID_BATCH = 400
+_PROTECTED = (
+    "EXISTS(SELECT 1 FROM prompt_tags pt JOIN tags t ON t.id=pt.tag_id "
+    "WHERE pt.prompt_id=p.id AND t.name='__protected__')"
+)
+_PAIRED = (
+    "EXISTS(SELECT 1 FROM prompt_pairs pp "
+    "WHERE pp.positive_prompt_id=p.id OR pp.negative_prompt_id=p.id)"
+)
+# #482: used as the negative of another positive's pair (archived or not):
+# never deleted, so that positive's variant stays (archive only).
+_NEGATIVE_OF_OTHER = (
+    "EXISTS(SELECT 1 FROM prompt_pairs op "
+    "WHERE op.negative_prompt_id=p.id AND op.positive_prompt_id!=p.id)"
+)
+# Classes in the order a prompt is tested; the first that holds wins.
+CLASSES = (
+    "not_found",
+    "protected",
+    "already_archived",
+    "not_archived",
+    "archive",
+    "delete",
+)
+# #492: the shelf a Delete… runs on. On the archived shelf an archived prompt is
+# classified by its pairs, and one restored since is ``not_archived``.
+SHELVES = ("active", "archived")
+
+
+def _check_shelf(shelf: str) -> bool:
+    """Whether ``shelf`` is the archived shelf (ValueError when unknown)."""
+    if shelf not in SHELVES:
+        raise ValueError("shelf must be active or archived")
+    return shelf == "archived"
+
+
+_DIGEST = re.compile(r"^[0-9a-f]{64}$")
+
+
+def _batches(ids: list) -> Iterable[list]:
+    for start in range(0, len(ids), ID_BATCH):
+        yield ids[start : start + ID_BATCH]
+
+
+def delete_prompt_rows(conn: sqlite3.Connection, prompt_ids: list[int]) -> int:
+    """Delete prompts and their image link rows; return the prompts deleted.
+
+    The legacy delete's statements (``delete_prompt``, ``bulk_delete_prompts``)
+    in the caller's transaction: image link rows first (``image_prompt_pairs``
+    cascades, review decisions keep a NULL image), then the prompts (tags and
+    Library state cascade), then the workflow documents no row references.
+    Image files are never touched. The caller checks pairs first.
+    """
+    documents = documents_of_rows(conn, "prompt_id", prompt_ids)
+    deleted = 0
+    for chunk in _batches(list(prompt_ids)):
+        marks = ",".join("?" for _ in chunk)
+        conn.execute(
+            f"DELETE FROM generated_images WHERE prompt_id IN ({marks})",  # nosec
+            chunk,
+        )
+        deleted += conn.execute(
+            f"DELETE FROM prompts WHERE id IN ({marks})", chunk  # nosec B608
+        ).rowcount
+    release_documents(conn, documents)
+    return deleted
+
+
+class LibraryArchiveOperations:
+    """PromptDatabase mixin: classify, archive or delete, and restore parents."""
+
+    def _classify_library_delete(
+        self, conn: sqlite3.Connection, prompt_ids: list[int], shelf: str = "active"
+    ) -> dict:
+        on_archived_shelf = _check_shelf(shelf)
+        found, deletable = {}, set()
+        for chunk in _batches(prompt_ids):
+            marks = ",".join("?" for _ in chunk)
+            for row in conn.execute(
+                f"SELECT p.id,{_PROTECTED},{_ARCHIVED},{_PAIRED},"  # nosec B608
+                f"{_NEGATIVE_OF_OTHER} "
+                f"FROM prompts p WHERE p.id IN ({marks}) AND {_ELIGIBLE}",
+                chunk,
+            ):
+                protected, archived, paired, negative_of_other = row[1:5]
+                if protected:
+                    found[row[0]] = "protected"
+                elif on_archived_shelf and not archived:
+                    found[row[0]] = "not_archived"
+                elif archived and not on_archived_shelf:
+                    found[row[0]] = "already_archived"
+                elif paired:
+                    found[row[0]] = "archive"
+                    if not negative_of_other:
+                        deletable.add(row[0])
+                else:
+                    found[row[0]] = "delete"
+        classes = {name: [] for name in CLASSES}
+        for pid in prompt_ids:
+            classes[found.get(pid, "not_found")].append(pid)
+        # #482: the archive ids Delete permanently may delete with their pairs.
+        classes["deletable"] = [pid for pid in classes["archive"] if pid in deletable]
+        return classes
+
+    @staticmethod
+    def _image_links(conn: sqlite3.Connection, prompt_ids: list[int]) -> int:
+        total = 0
+        for chunk in _batches(prompt_ids):
+            marks = ",".join("?" for _ in chunk)
+            total += conn.execute(
+                "SELECT COUNT(*) FROM generated_images "  # nosec B608
+                f"WHERE prompt_id IN ({marks})",
+                chunk,
+            ).fetchone()[0]
+        return total
+
+    @staticmethod
+    def _fingerprints(conn: sqlite3.Connection, prompt_ids: list[int]) -> dict:
+        """What a safety backup holds of each prompt a delete would remove.
+
+        The prompt row (usage included), its tag ids, its Library title and
+        its image link rows (count and newest id), as a JSON-safe list.
+        """
+        prints = {}
+        for chunk in _batches(prompt_ids):
+            marks = ",".join("?" for _ in chunk)
+            for row in conn.execute(
+                "SELECT p.id,p.text,p.hash,p.category,p.rating,p.notes,"  # nosec
+                "p.updated_at,p.run_count,p.last_used_at,"
+                "(SELECT group_concat(tag_id) FROM (SELECT tag_id FROM prompt_tags "
+                "WHERE prompt_id=p.id ORDER BY tag_id)),"
+                "(SELECT title FROM prompt_library_state WHERE prompt_id=p.id),"
+                "(SELECT COUNT(*) FROM generated_images WHERE prompt_id=p.id),"
+                "(SELECT MAX(id) FROM generated_images WHERE prompt_id=p.id) "
+                f"FROM prompts p WHERE p.id IN ({marks})",
+                chunk,
+            ):
+                prints[row[0]] = [
+                    value if isinstance(value, (int, str, type(None))) else repr(value)
+                    for value in tuple(row)[1:]
+                ]
+        return prints
+
+    @staticmethod
+    def _distinct_images(conn: sqlite3.Connection, prompt_ids: list[int]) -> int:
+        """Image rows of ``prompt_ids`` (each image once; #482 deletes them)."""
+        return LibraryArchiveOperations._image_links(conn, prompt_ids)
+
+    @staticmethod
+    def _pair_prints(conn: sqlite3.Connection, prompt_ids: list[int]) -> dict:
+        """#482: each prompt's own saved pairs, as the review saw them.
+
+        Per pair (by id): its negative, archived flag, metadata, usage, ordered
+        tag ids and its image-pair links (count and newest id).
+        """
+        prints = {pid: [] for pid in prompt_ids}
+        for chunk in _batches(prompt_ids):
+            marks = ",".join("?" for _ in chunk)
+            for row in conn.execute(
+                "SELECT pp.positive_prompt_id,pp.id,pp.negative_prompt_id,"  # nosec
+                "pp.archived,pp.title,pp.category,pp.rating,pp.notes,pp.run_count,"
+                "pp.last_used_at,pp.updated_at,"
+                "(SELECT group_concat(tag_id) FROM (SELECT tag_id FROM "
+                "prompt_pair_tags WHERE pair_id=pp.id ORDER BY tag_id)),"
+                "(SELECT COUNT(*) FROM image_prompt_pairs WHERE pair_id=pp.id),"
+                "(SELECT MAX(id) FROM image_prompt_pairs WHERE pair_id=pp.id) "
+                f"FROM prompt_pairs pp WHERE pp.positive_prompt_id IN ({marks}) "
+                "ORDER BY pp.id",
+                chunk,
+            ):
+                prints[row[0]].append(
+                    [
+                        v if isinstance(v, (int, str, type(None))) else repr(v)
+                        for v in tuple(row)[1:]
+                    ]
+                )
+        return prints
+
+    @classmethod
+    def _review_digests(cls, conn: sqlite3.Connection, prompt_ids: list[int]) -> dict:
+        """#482: one digest per deletable prompt of its row and its pairs."""
+        prompts = cls._fingerprints(conn, prompt_ids)
+        pairs = cls._pair_prints(conn, prompt_ids)
+        return {
+            pid: hashlib.sha256(
+                json.dumps(
+                    [prompts.get(pid), pairs[pid]], separators=(",", ":")
+                ).encode("utf-8")
+            ).hexdigest()
+            for pid in prompt_ids
+        }
+
+    @staticmethod
+    def _paired_counts(
+        conn: sqlite3.Connection, prompt_ids: list[int], selected: list[int]
+    ) -> dict:
+        """#482: what Delete permanently would remove with ``prompt_ids``."""
+        pairs = archived = variants = 0
+        negatives = set()
+        for chunk in _batches(prompt_ids):
+            marks = ",".join("?" for _ in chunk)
+            for archived_flag, negative, positive in conn.execute(
+                "SELECT archived,negative_prompt_id,positive_prompt_id "  # nosec
+                f"FROM prompt_pairs WHERE positive_prompt_id IN ({marks})",
+                chunk,
+            ):
+                pairs += 1
+                archived += 1 if archived_flag else 0
+                if negative is not None:
+                    variants += 1
+                    if negative != positive:
+                        negatives.add(negative)
+        return {
+            "pairs": pairs,
+            "archived_pairs": archived,
+            "variants": variants,
+            "kept_negatives": len(negatives - set(selected)),
+        }
+
+    @staticmethod
+    def _checked_ids(prompt_ids: list[int], expected_epoch: str) -> list[int]:
+        _validate_epoch(expected_epoch)
+        _validate_bulk_ids(prompt_ids)
+        return list(dict.fromkeys(prompt_ids))
+
+    def classify_library_delete(
+        self, prompt_ids: list[int], *, expected_epoch: str, shelf: str = "active"
+    ) -> dict:
+        """What a delete of ``prompt_ids`` would do now (reads only).
+
+        Returns the id lists per class, in request order, ``image_links``
+        (the image link rows the ``delete`` class would remove) and
+        ``fingerprints`` of the ``delete`` class (``_fingerprints``). On the
+        archived ``shelf`` (#492) archived prompts are classified by their pairs.
+        """
+        _check_shelf(shelf)
+        prompt_ids = self._checked_ids(prompt_ids, expected_epoch)
+        with self.library_snapshot() as (conn, _epoch, _ceiling):
+            epoch = self._library_epoch(conn, expected_epoch)
+            classes = self._classify_library_delete(conn, prompt_ids, shelf)
+            deletable = classes["deletable"]
+            return {
+                "library_epoch": epoch,
+                **classes,
+                "image_links": self._image_links(conn, classes["delete"]),
+                "fingerprints": self._fingerprints(conn, classes["delete"]),
+                # #482: Delete permanently, with the deletable prompts' pairs.
+                "review_digests": self._review_digests(conn, deletable),
+                "paired_counts": self._paired_counts(conn, deletable, prompt_ids),
+                "paired_image_links": self._distinct_images(conn, deletable),
+            }
+
+    @staticmethod
+    def _repair_hash(conn: sqlite3.Connection, prompt_id: int) -> None:
+        """Give an archived prompt its canonical hash, so ingestion finds it.
+
+        Scans, the monitor and node saves resolve prompts by hash; a stale or
+        missing one would make them insert a visible copy (Q3). When another
+        row already holds the canonical hash, lookups find that row and no new
+        copy is made, so nothing is written.
+        """
+        text, stored = conn.execute(
+            "SELECT text,hash FROM prompts WHERE id=?", (prompt_id,)
+        ).fetchone()
+        canonical = generate_prompt_hash(text) if isinstance(text, str) else None
+        if canonical is None or stored == canonical:
+            return
+        if conn.execute(
+            "SELECT 1 FROM prompts WHERE hash=? AND id!=?", (canonical, prompt_id)
+        ).fetchone():
+            return
+        conn.execute("UPDATE prompts SET hash=? WHERE id=?", (canonical, prompt_id))
+
+    def archive_or_delete_library_prompts(
+        self,
+        archive_ids: list[int],
+        delete_ids: list[int],
+        *,
+        expected_epoch: str,
+        candidates: dict | None,
+        delete_paired: dict | None = None,
+        shelf: str = "active",
+    ) -> dict:
+        """Archive and delete what the user reviewed, all or nothing.
+
+        ``archive_ids`` and ``delete_ids`` are the reviewed classes.
+        ``candidates`` maps each reviewed delete the route backed up to its
+        fingerprint then (None: every reviewed delete, unchecked; tests and
+        callers without a backup). A reviewed delete is deleted only when it
+        still classifies ``delete`` and its fingerprint is unchanged; one that
+        is now paired, and a reviewed archive now unpaired, are archived (the
+        restorable direction); anything else is kept and counted.
+
+        ``delete_paired`` (#482) maps reviewed archive ids the user chose to
+        Delete permanently to their review digest. Each is deleted with its
+        own saved pairs only while it is still deletable and its digest is
+        unchanged; otherwise it is archived and counted ``changed``.
+
+        On the archived ``shelf`` (#492) the ids are archived already: nothing
+        is archived or rewritten, every reviewed id not deleted (protected or
+        changed) counts ``changed``, and one restored since ``not_archived``.
+        """
+        on_archived_shelf = _check_shelf(shelf)
+        _validate_epoch(expected_epoch)
+        for ids in (archive_ids, delete_ids):
+            if not isinstance(ids, list) or any(
+                type(pid) is not int or not 1 <= pid <= 2**63 - 1 for pid in ids
+            ):
+                raise ValueError("prompt ids must be lists of positive integers")
+        reviewed_delete = set(delete_ids)
+        delete_paired = {} if delete_paired is None else delete_paired
+        if not isinstance(delete_paired, dict) or any(
+            type(pid) is not int
+            or not isinstance(digest, str)
+            or not _DIGEST.match(digest)
+            for pid, digest in delete_paired.items()
+        ):
+            raise ValueError("delete_paired must map prompt ids to review digests")
+        if not set(delete_paired) <= set(archive_ids):
+            raise ValueError("A permanent delete must be a reviewed archive id")
+        if not archive_ids and not delete_ids:
+            raise ValueError("Nothing to delete or archive")
+        if reviewed_delete & set(archive_ids):
+            raise ValueError("A prompt cannot be both archived and deleted")
+        prompt_ids = list(dict.fromkeys([*archive_ids, *delete_ids]))
+        with self._pair_transaction() as conn:
+            epoch = self._library_epoch(conn, expected_epoch)
+            classes = self._classify_library_delete(conn, prompt_ids, shelf)
+            now_prints = self._fingerprints(conn, classes["delete"])
+            deletes, archives, changed = [], [], 0
+            paired_now = set(classes["deletable"])
+            chosen = [pid for pid in classes["archive"] if pid in delete_paired]
+            digests = self._review_digests(
+                conn, [pid for pid in chosen if pid in paired_now]
+            )
+            paired_deletes = []
+            for pid in classes["archive"]:
+                if pid not in delete_paired:
+                    archives.append(pid)
+                elif digests.get(pid) == delete_paired[pid]:
+                    paired_deletes.append(pid)
+                else:
+                    archives.append(pid)  # changed since the review: restorable
+                    changed += 1
+            for pid in classes["delete"]:
+                if pid not in reviewed_delete:
+                    archives.append(pid)  # reviewed as archive, now unpaired
+                    changed += 1 if pid in delete_paired else 0
+                elif candidates is None or candidates.get(pid) == now_prints[pid]:
+                    deletes.append(pid)
+                else:
+                    changed += 1
+            changed += len(classes["protected"])
+            if on_archived_shelf:
+                # Already archived: the rest stay as they are, each one counted.
+                archives = []
+                changed = len(prompt_ids) - len(deletes) - len(paired_deletes)
+                changed -= len(classes["not_found"]) + len(classes["not_archived"])
+            image_links = self._image_links(conn, [*deletes, *paired_deletes])
+            now = utc_now_iso()
+            for pid in archives:
+                self._repair_hash(conn, pid)
+            conn.executemany(
+                f"INSERT INTO {ARCHIVE}(prompt_id, archived_at) VALUES (?, ?)",
+                [(pid, now) for pid in archives],
+            )
+            # A changed row is the newest edit the restore fingerprint reads.
+            conn.executemany(
+                "UPDATE prompts SET updated_at=? WHERE id=?",
+                [(now, pid) for pid in archives],
+            )
+            # #482: the image-pair links (RESTRICT) go first, then the pairs
+            # (pair tags CASCADE, review decisions SET NULL), then the prompts.
+            pairs_removed = 0
+            for chunk in _batches(paired_deletes):
+                marks = ",".join("?" for _ in chunk)
+                pairs_of = (
+                    "SELECT id FROM prompt_pairs "  # nosec B608
+                    f"WHERE positive_prompt_id IN ({marks})"
+                )
+                conn.execute(
+                    f"DELETE FROM image_prompt_pairs WHERE pair_id IN ({pairs_of})",
+                    chunk,
+                )
+                pairs_removed += conn.execute(
+                    "DELETE FROM prompt_pairs "  # nosec B608
+                    f"WHERE positive_prompt_id IN ({marks})",
+                    chunk,
+                ).rowcount
+            deleted = delete_prompt_rows(conn, [*deletes, *paired_deletes])
+            return {
+                "library_epoch": epoch,
+                "deleted": deleted,
+                "archived": len(archives),
+                "already_archived": len(classes["already_archived"]),
+                "not_archived": len(classes["not_archived"]),
+                "not_found": len(classes["not_found"]),
+                "changed": changed,
+                "image_links": image_links,
+                "pairs_removed": pairs_removed,
+            }
+
+    def restore_library_prompts(
+        self, prompt_ids: list[int], *, expected_epoch: str
+    ) -> dict:
+        """Put archived prompts back on the shelf, all or nothing.
+
+        Every requested id with an archive row is restored, whatever its
+        protection or Library parent state: restoring only un-hides it.
+        """
+        prompt_ids = self._checked_ids(prompt_ids, expected_epoch)
+        with self._pair_transaction() as conn:
+            epoch = self._library_epoch(conn, expected_epoch)
+            restored, existing = [], set()
+            for chunk in _batches(prompt_ids):
+                marks = ",".join("?" for _ in chunk)
+                for pid, archived in conn.execute(
+                    f"SELECT p.id,{_ARCHIVED} FROM prompts p "  # nosec B608
+                    f"WHERE p.id IN ({marks})",
+                    chunk,
+                ):
+                    existing.add(pid)
+                    if archived:
+                        restored.append(pid)
+            now = utc_now_iso()
+            conn.executemany(
+                f"DELETE FROM {ARCHIVE} WHERE prompt_id=?", [(pid,) for pid in restored]
+            )
+            conn.executemany(
+                "UPDATE prompts SET updated_at=? WHERE id=?",
+                [(now, pid) for pid in restored],
+            )
+            return {
+                "library_epoch": epoch,
+                "restored": len(restored),
+                "unchanged": len(existing) - len(restored),
+                "not_found": len(prompt_ids) - len(existing),
+            }

database/library_commands.py

@@ -21,6 +21,10 @@ _UUID = re.compile(r"[0-9a-f]{8}(?:-[0-9a-f]{4}){3}-[0-9a-f]{12}")
 _TOKEN = re.compile(r"[0-9a-f]{64}")
 # Parent metadata stored on the prompt row; title lives in prompt_library_state.
 _PROMPT_COLUMNS = ("category", "rating", "notes")
+# Ids per IN (...) read: well under SQLite's oldest bound-parameter limit (999).
+_BULK_CHUNK = 500
+# The tags one prompt may carry: what the editor's save accepts (``validate_tags``).
+MAX_LIBRARY_TAGS = 20
 
 
 class LibraryCommandError(Exception):
@@ -85,6 +89,13 @@ def _validate_epoch(expected_epoch: str) -> None:
         raise ValueError("expected_epoch must be a canonical UUID")
 
 
+def _validate_bulk_ids(prompt_ids: list[int]) -> None:
+    if not isinstance(prompt_ids, list) or not prompt_ids:
+        raise ValueError("prompt_ids must be a non-empty list")
+    if any(type(pid) is not int or not 1 <= pid <= 2**63 - 1 for pid in prompt_ids):
+        raise ValueError("prompt_ids must be positive integers")
+
+
 def _validate_guards(positive_id: int, expected_epoch: str, if_match: str) -> None:
     if type(positive_id) is not int or not 1 <= positive_id <= 2**63 - 1:
         raise ValueError("Invalid positive prompt ID")
@@ -308,3 +319,134 @@ class LibraryCommandOperations:
                 positive_created=False,
                 pair_created=pair_created,
             )
+
+    def bulk_set_library_category(
+        self, prompt_ids: list[int], category: str, *, expected_epoch: str
+    ) -> dict:
+        """Set one category on many Library parents, all or nothing (#437).
+
+        Guarded by the storage epoch the page read. Only rows whose category
+        differs are written (their ``updated_at`` and edit token change) and
+        registered as Library parents, as the editor's PATCH does; ids
+        that are missing or are not Library parents count as not found.
+        """
+        _validate_epoch(expected_epoch)
+        _validate_bulk_ids(prompt_ids)
+        prompt_ids = list(dict.fromkeys(prompt_ids))
+        if not isinstance(category, str) or not category.strip():
+            raise ValueError("Category is required")
+        validate_category(category)
+        category = category.strip()
+        with self._pair_transaction() as conn:
+            epoch = self._library_epoch(conn, expected_epoch)
+            current = {}
+            for start in range(0, len(prompt_ids), _BULK_CHUNK):
+                chunk = prompt_ids[start : start + _BULK_CHUNK]
+                marks = ",".join("?" for _ in chunk)
+                current.update(
+                    conn.execute(
+                        f"SELECT p.id,p.category FROM prompts p "  # nosec B608
+                        f"WHERE p.id IN ({marks}) AND {_ELIGIBLE}",
+                        chunk,
+                    ).fetchall()
+                )
+            changed = [pid for pid, value in current.items() if value != category]
+            for pid in changed:
+                self._ensure_library_parent(conn, pid)
+            now = utc_now_iso()
+            conn.executemany(
+                "UPDATE prompts SET category=?,updated_at=? WHERE id=?",
+                [(category, now, pid) for pid in changed],
+            )
+            return {
+                "library_epoch": epoch,
+                "category": category,
+                "updated": len(changed),
+                "unchanged": len(current) - len(changed),
+                "not_found": len(prompt_ids) - len(current),
+            }
+
+    def bulk_add_library_tags(
+        self, prompt_ids: list[int], tags: list[str], *, expected_epoch: str
+    ) -> dict:
+        """Add tags to many Library parents, all or nothing (#442).
+
+        Names are normalized once (trim, the vocabulary name rules, casefold
+        repeats folded, at most 20). A parent is given only the names it lacks,
+        compared with ``casefold`` against its own tags; registry rows are
+        found and inserted by their exact name, and only for names some parent
+        gets. A parent whose tags would pass 20 is skipped (``over_limit``) so
+        the editor can still save it. Pair and image tags are not touched.
+        """
+        from .annotations import ImageTagLimitError, normalize_image_tags
+
+        _validate_epoch(expected_epoch)
+        _validate_bulk_ids(prompt_ids)
+        prompt_ids = list(dict.fromkeys(prompt_ids))
+        too_many = f"At most {MAX_LIBRARY_TAGS} tags can be added at once"
+        try:
+            tags = normalize_image_tags(tags)
+        except ImageTagLimitError:
+            # Its message names images; this is a prompt route.
+            raise ValueError(too_many) from None
+        if not tags:
+            raise ValueError("tags must name at least one tag")
+        if len(tags) > MAX_LIBRARY_TAGS:
+            raise ValueError(too_many)
+        with self._pair_transaction() as conn:
+            epoch = self._library_epoch(conn, expected_epoch)
+            held = self._library_parent_tags(conn, prompt_ids)
+            additions, over_limit = {}, 0
+            for pid, names in held.items():
+                present = {name.casefold() for name in names}
+                missing = [name for name in tags if name.casefold() not in present]
+                if not missing:
+                    continue
+                if len(names) + len(missing) > MAX_LIBRARY_TAGS:
+                    over_limit += 1
+                    continue
+                additions[pid] = missing
+            wanted = list(
+                dict.fromkeys(n for names in additions.values() for n in names)
+            )
+            tag_ids = self._ensure_tags(conn, wanted)
+            now = utc_now_iso()
+            for pid, names in additions.items():
+                conn.executemany(
+                    "INSERT OR IGNORE INTO prompt_tags (prompt_id, tag_id) "
+                    "VALUES (?, ?)",
+                    [(pid, tag_ids[name]) for name in names],
+                )
+                self._ensure_library_parent(conn, pid)
+                conn.execute("UPDATE prompts SET updated_at=? WHERE id=?", (now, pid))
+            return {
+                "library_epoch": epoch,
+                "tags": tags,
+                "updated": len(additions),
+                "unchanged": len(held) - len(additions) - over_limit,
+                "not_found": len(prompt_ids) - len(held),
+                "over_limit": over_limit,
+            }
+
+    def _library_parent_tags(
+        self, conn: sqlite3.Connection, prompt_ids: list[int]
+    ) -> dict[int, list[str]]:
+        """The Library parents among ``prompt_ids`` and their own tag names."""
+        held: dict[int, list[str]] = {}
+        for start in range(0, len(prompt_ids), _BULK_CHUNK):
+            chunk = prompt_ids[start : start + _BULK_CHUNK]
+            marks = ",".join("?" for _ in chunk)
+            for (pid,) in conn.execute(
+                f"SELECT p.id FROM prompts p WHERE p.id IN ({marks}) "  # nosec B608
+                f"AND {_ELIGIBLE}",
+                chunk,
+            ):
+                held[pid] = []
+            for pid, name in conn.execute(
+                "SELECT pt.prompt_id,t.name FROM prompt_tags pt "  # nosec B608
+                f"JOIN tags t ON t.id=pt.tag_id WHERE pt.prompt_id IN ({marks})",
+                chunk,
+            ):
+                if pid in held:
+                    held[pid].append(name)
+        return held

database/library_folders.py

@@ -0,0 +1,114 @@
+"""Library output-folder filter (#444): folder names, root prefixes and listing.
+
+A folder is a ``/``-joined path relative to an output root, as Images' folder
+filter and the legacy ``/prompt_manager/subfolders`` name them. A parent
+matches a folder when one of its linked images (``generated_images.prompt_id``,
+the link its previews and image count read) lies in that folder or below it,
+under any spelling of any output root.
+
+Matching compares ``generated_images.file_path``, which is always
+``normcase(normpath(abspath(path)))`` (``models.normalize_image_path``), with
+prefixes built by the same normalization here, so case folding is the
+platform's own on both sides (Windows folds non-ASCII too, unlike SQLite's
+``lower()``) and the comparison is an exact ``substr`` with no wildcards.
+"""
+
+import os
+import sqlite3
+
+_MAX_FOLDER = 1024
+_MAX_PREFIXES = 64
+
+
+def normalize_folder(value: object, pathmod=os.path) -> str:
+    """The folder as ``a/b``, outer slashes dropped; empty means no filter.
+
+    ``/`` always separates. ``\\`` separates only on Windows (``ntpath``): on
+    POSIX it is an ordinary character of a folder's name, and the listing
+    (``relative_folder``) names such a folder with it, so both agree.
+    ``.``/``..``/empty segments, control characters and (on Windows) a drive
+    are refused: the value only ever names a folder below a root.
+    """
+    if not isinstance(value, str) or len(value) > _MAX_FOLDER:
+        raise ValueError(f"folder must be text of at most {_MAX_FOLDER} characters")
+    windows = pathmod.sep == "\\"
+    folder = (value.replace("\\", "/") if windows else value).strip("/")
+    if not folder:
+        return ""
+    parts = folder.split("/")
+    if (
+        any(part in ("", ".", "..") for part in parts)
+        or (windows and ":" in parts[0])
+        or any(ord(char) < 32 or ord(char) == 127 for char in folder)
+    ):
+        raise ValueError("folder must be a folder below an output root")
+    return folder
+
+
+def _base(root: object, pathmod) -> str:
+    return pathmod.normcase(pathmod.normpath(str(root)))
+
+
+def folder_prefixes(roots, folder: str, pathmod=os.path) -> list[str]:
+    """One ``file_path`` prefix per root spelling for a normalized folder."""
+    prefixes = []
+    for root in roots:
+        joined = pathmod.join(_base(root, pathmod), *folder.split("/"))
+        prefix = pathmod.normcase(pathmod.normpath(joined)) + pathmod.sep
+        if prefix not in prefixes:
+            prefixes.append(prefix)
+    if not prefixes or len(prefixes) > _MAX_PREFIXES:
+        raise ValueError("No output folder to filter by")
+    return prefixes
+
+
+def folder_condition(prefixes: list[str]) -> tuple[str, list]:
+    """A condition on alias ``p``: one linked image under any prefix."""
+    tests = " OR ".join("substr(fg.file_path,1,?)=?" for _ in prefixes)
+    params = [value for prefix in prefixes for value in (len(prefix), prefix)]
+    return (
+        "EXISTS(SELECT 1 FROM generated_images fg WHERE fg.prompt_id=p.id "
+        f"AND ({tests}))",
+        params,
+    )
+
+
+def relative_folder(image_path: str, roots, pathmod=os.path) -> str | None:
+    """The folder of *image_path* below the first root spelling holding it.
+
+    The spelling of the stored path is kept (its case on Windows); ``None``
+    for an image directly in a root or outside every root.
+    """
+    directory = pathmod.normpath(pathmod.dirname(image_path))
+    folded = pathmod.normcase(directory)
+    for root in roots:
+        base = _base(root, pathmod)
+        start = base if base.endswith(pathmod.sep) else base + pathmod.sep
+        if not folded.startswith(start):
+            continue
+        # normcase keeps the length for ordinary names; else show the folded form.
+        rest = (directory if len(directory) == len(folded) else folded)[len(start) :]
+        parts = rest.split(pathmod.sep)
+        if any(part in ("", ".", "..") for part in parts):
+            return None
+        return "/".join(parts)
+    return None
+
+
+def list_library_folders(
+    conn: sqlite3.Connection, roots, eligible: str, pathmod=os.path
+) -> list[str]:
+    """Every folder (and ancestor) holding an image of an eligible parent."""
+    folders = set()
+    for (image_path,) in conn.execute(
+        "SELECT DISTINCT g.image_path FROM generated_images g "
+        "JOIN prompts p ON p.id=g.prompt_id WHERE " + eligible
+    ):
+        if not isinstance(image_path, str) or not image_path:
+            continue
+        folder = relative_folder(image_path, roots, pathmod)
+        if folder is None:
+            continue
+        parts = folder.split("/")
+        folders.update("/".join(parts[:index]) for index in range(1, len(parts) + 1))
+    return sorted(folders, key=lambda value: (value.casefold(), value))

database/library_move.py

@@ -56,9 +56,11 @@ from .models import BUSY_TIMEOUT_SECONDS, PromptModel
 try:
     from ..utils import library_location as ll
     from ..utils.logging_config import get_logger
+    from ..utils.workspace_keys import KEY_FILE_NAME
 except ImportError:
     from utils import library_location as ll
     from utils.logging_config import get_logger
+    from utils.workspace_keys import KEY_FILE_NAME
 
 logger = get_logger("prompt_manager.database.library_move")
 
@@ -491,7 +493,8 @@ class _Move:
         sweep_move_temps(target)
         if ll.read_marker(target).get("state") == ll.MARKER_PENDING:
             # An earlier move stopped before it switched: its files are ours.
-            for name in (ll.DATABASE_NAME, ll.CONFIG_NAME) + self.plan.backups:
+            names = (ll.DATABASE_NAME, ll.CONFIG_NAME, KEY_FILE_NAME)
+            for name in names + self.plan.backups:
                 _remove(os.path.join(target, name))
             for suffix in ("-wal", "-shm", "-journal"):
                 _remove(os.path.join(target, ll.DATABASE_NAME + suffix))
@@ -536,6 +539,7 @@ class _Move:
                 raise MoveFailed("copy-failed") from error
             _check_copies([(self.plan.config_path, temp, expected)])
             copies = copies + [(self.plan.config_path, temp, expected, ll.CONFIG_NAME)]
+        copies = copies + self._key_copy()
         self.marker = write_marker(
             target, ll.MARKER_PENDING, self.plan.db_path, self.plan.config_path
         )
@@ -556,6 +560,28 @@ class _Move:
         self.checkpoint("marked")
         return files
 
+    def _key_copy(self) -> list:
+        """The workspace key's verified copy (#430), or none: it is re-creatable.
+
+        Without it the moved library starts with a new key, so pages left open
+        across the restart refresh once; that never fails the move.
+        """
+        source = os.path.join(self.plan.source_dir, KEY_FILE_NAME)
+        if not os.path.isfile(source):
+            return []
+        temp = self.temp(".key")
+        try:
+            expected = _hash_copy(source, temp)
+            _check_copies([(source, temp, expected)])
+        except (OSError, MoveFailed) as error:
+            _remove(temp)
+            logger.warning(
+                f"Library move: the workspace key was not copied ({error}); "
+                "open workspace pages refresh once after the restart"
+            )
+            return []
+        return [(source, temp, expected, KEY_FILE_NAME)]
+
     def cleanup(self) -> None:
         if self.moved:
             return

database/maintenance.py

@@ -15,6 +15,8 @@ change:
   ``cleanup_orphaned_images``), counted only under a source that can be read
   now, as the health check's ``missing_files`` judges them
   (``health.link_states``). It deletes database rows only, never a file.
+  It also forgets the removal marks (#480) that hide nothing any more: the
+  file is gone or changed, under a readable source (#501, ``_stale_marks``).
 
 ``preview_maintenance`` reads one snapshot on its own ``mode=ro`` connection
 (``health.readonly_uri``) and closes it in ``finally``; files are looked at
@@ -41,9 +43,16 @@ from pathlib import Path
 
 from .execution_contexts import LIVE_HINT_CTES
 from .health import BATCH_ROWS, link_states, readable_roots, readonly_uri
+from .image_removal_schema import TABLE as MARKS_TABLE
+from .image_removal_schema import clear_marks, has_marks_table
 from .pairs import PairDependencyError
 from .workflow_documents import documents_of_rows, release_documents
 
+try:
+    from ..utils.hashing import register_prompt_functions
+except ImportError:
+    from utils.hashing import register_prompt_functions
+
 MAINTENANCE_OPERATIONS = (
     "duplicate_prompts",
     "optimize",
@@ -80,6 +89,12 @@ PROTECTIONS = (
         "with Library state (a title or an explicit parent)",
         "with Library state (a title or an explicit parent)",
     ),
+    (
+        # #443: an archived prompt is restorable, never pruned.
+        "EXISTS (SELECT 1 FROM prompt_archive pa WHERE pa.prompt_id = p.id)",
+        "archived in the Library",
+        "archived in the Library",
+    ),
     (
         "p.id IN (SELECT prompt_id FROM live_hint_prompts)",
         "used by recorded runs",
@@ -88,7 +103,8 @@ PROTECTIONS = (
 )
 
 # Exempt references: images, pairs, the __protected__ tag, Library parent
-# state, and live recorded-run hints (computed once, see LIVE_HINT_CTES).
+# state, the Library archive, and live recorded-run hints (computed once,
+# see LIVE_HINT_CTES).
 ORPHANED_PROMPTS_SQL = (
     "WITH "
     + LIVE_HINT_CTES
@@ -182,6 +198,8 @@ class MaintenanceDraft:
     protected: dict
     media: dict
     details: list = field(default_factory=list)
+    # missing_links only: locators of removal marks whose file is gone (#501).
+    marks: list = field(default_factory=list)
 
     def public(self):
         """The plan fields a response may carry (no fingerprint, no targets)."""
@@ -284,11 +302,96 @@ def _delete_ids(conn, table, ids):
     return removed
 
 
+def _mark_rows(conn, only=None):
+    """``[(locator, size, mtime_ns)]`` of the removal marks (all, or those
+    among *only*), sorted by locator."""
+    if not has_marks_table(conn):
+        return []
+    sql = f"SELECT locator, size, mtime_ns FROM {MARKS_TABLE}"  # nosec B608
+    if only is None:
+        return sorted(tuple(row) for row in conn.execute(sql))
+    found = []
+    for batch in _batches(sorted(only)):
+        found.extend(
+            tuple(row)
+            for row in conn.execute(
+                f"{sql} WHERE locator IN ({_marks(batch)})", batch  # nosec B608
+            )
+        )
+    return sorted(found)
+
+
+def _lists_something(folder):
+    """Whether *folder* holds at least one entry (an unplugged drive's mount
+    point, or an unbound volume, is an empty folder that reads fine)."""
+    try:
+        with os.scandir(folder) as entries:
+            return next(entries, None) is not None
+    except OSError:
+        return False
+
+
+def _name_listed(path):
+    """Whether *path*'s folder lists its name, compared under ``normcase``.
+
+    A locator is ``normcase``d; on a case-sensitive NTFS folder ``lstat`` of
+    the lower-cased spelling fails for a file that is there.
+    """
+    folder, name = os.path.split(path)
+    wanted = os.path.normcase(name)
+    try:
+        with os.scandir(folder) as entries:
+            return any(os.path.normcase(entry.name) == wanted for entry in entries)
+    except OSError:
+        return True  # cannot tell: keep the mark
+
+
+def _stale_mark(locator, size, mtime_ns):
+    """Whether the file of a mark is gone or has other bytes (blocking)."""
+    try:
+        info = os.lstat(locator)
+    except (FileNotFoundError, NotADirectoryError):
+        return os.path.isdir(os.path.dirname(locator)) and not _name_listed(locator)
+    except OSError:
+        return False
+    return (info.st_size, info.st_mtime_ns) != (size, mtime_ns)
+
+
+def _stale_marks(marks, roots):
+    """``[(locator, owner)]`` of the marks that hide nothing any more (#501).
+
+    *marks* are ``(locator, size, mtime_ns)`` rows. A mark is stale when its
+    file was changed, or is gone from a folder that still exists. Only marks
+    under a source that can be read now and lists something are judged (an
+    unplugged drive's marks, or its empty mount point's, stay); any doubt
+    keeps the mark. *owner* is the index of the longest source holding it.
+    Locators are ``normcase(realpath)`` paths, so the sources are too.
+    """
+    readable = readable_roots(roots)
+    prefixes = [
+        os.path.normcase(os.path.realpath(root)).rstrip("\\/") + os.sep
+        for root in roots
+    ]
+    judged = {}
+    stale = []
+    for locator, size, mtime_ns in marks:
+        owners = [i for i, prefix in enumerate(prefixes) if locator.startswith(prefix)]
+        if not owners:
+            continue  # under no source now (a source removed from the settings)
+        owner = max(owners, key=lambda i: len(prefixes[i]))
+        if owner not in judged:
+            judged[owner] = readable[owner] and _lists_something(roots[owner])
+        if judged[owner] and _stale_mark(locator, size, mtime_ns):
+            stale.append((locator, owner))
+    return stale
+
+
 def _read_snapshot(db_path, read):
     """``read(conn)`` on one ``mode=ro`` snapshot; the connection always closes."""
     conn = sqlite3.connect(readonly_uri(db_path), uri=True)
     try:
         conn.row_factory = sqlite3.Row
+        register_prompt_functions(conn)  # LIVE_HINT_CTES calls them (#460)
         conn.execute("BEGIN")  # one read snapshot for the whole plan
         return read(conn)
     finally:
@@ -425,8 +528,11 @@ class MaintenanceOperations:
         if operation == "workflow_storage":
             return self._plan_workflow_storage()
         if operation == "missing_links":
-            rows = _read_snapshot(self.model.db_path, self._link_rows)
-            return self._plan_missing_links(rows, roots)
+            rows, marks = _read_snapshot(
+                self.model.db_path,
+                lambda conn: (self._link_rows(conn), _mark_rows(conn)),
+            )
+            return self._plan_missing_links(rows, roots, _stale_marks(marks, roots))
         reader = (
             self._plan_duplicate_prompts
             if operation == "duplicate_prompts"
@@ -557,13 +663,15 @@ class MaintenanceOperations:
         )
 
     @staticmethod
-    def _links_fingerprint(candidates):
+    def _links_fingerprint(candidates, stale=()):
         fingerprint = _Fingerprint("missing_links")
         for row, owner in candidates:
             fingerprint.add([row[0], row[1], row[3], owner])
+        for locator, owner in stale:
+            fingerprint.add(["mark", locator, owner])
         return fingerprint.hexdigest()
 
-    def _plan_missing_links(self, rows, roots):
+    def _plan_missing_links(self, rows, roots, stale=()):
         readable = readable_roots(roots)
         candidates, unavailable, outside = [], 0, 0
         for row, owner, state in link_states(rows, roots, readable):
@@ -591,29 +699,47 @@ class MaintenanceOperations:
                 )
             )
         count = len(candidates)
+        parts = []
+        if count:
+            parts.append(
+                _plural(count, "link to a missing file", "links to missing files")
+            )
+        if stale:
+            parts.append(
+                _plural(
+                    len(stale),
+                    "removed image whose file is gone or changed",
+                    "removed images whose files are gone or changed",
+                )
+            )
+        details = [
+            {
+                "label": _relative(row[1], roots[owner]),
+                "detail": f"{_source_name(roots[owner], owner)} · the file is missing",
+            }
+            for row, owner in candidates
+        ] + [
+            {
+                "label": _relative(locator, os.path.realpath(roots[owner])),
+                "detail": (
+                    f"{_source_name(roots[owner], owner)} · removed image, "
+                    "the file is gone or changed"
+                ),
+            }
+            for locator, owner in stale
+        ]
         return MaintenanceDraft(
             operation="missing_links",
-            fingerprint=self._links_fingerprint(candidates),
+            fingerprint=self._links_fingerprint(candidates, stale),
             targets=[row[0] for row, _owner in candidates],
             scope={
-                "count": count,
-                "label": (
-                    _plural(count, "link to a missing file", "links to missing files")
-                    if count
-                    else "No links to missing files"
-                ),
+                "count": count + len(stale),
+                "label": "; ".join(parts) or "No links to missing files",
             },
             protected={"count": unavailable + outside, "reasons": reasons},
             media={"deletes_files": False, "label": LINKS_ONLY},
-            details=[
-                {
-                    "label": _relative(row[1], roots[owner]),
-                    "detail": (
-                        f"{_source_name(roots[owner], owner)} · the file is missing"
-                    ),
-                }
-                for row, owner in candidates[:MAX_DETAILS]
-            ],
+            details=details[:MAX_DETAILS],
+            marks=[locator for locator, _owner in stale],
         )
 
     def _plan_optimize(self):
@@ -663,14 +789,18 @@ class MaintenanceOperations:
 
     # ── apply ─────────────────────────────────────────────────────────
 
-    def apply_maintenance(self, operation, fingerprint, targets, roots=()) -> dict:
+    def apply_maintenance(
+        self, operation, fingerprint, targets, roots=(), marks=()
+    ) -> dict:
         """Apply a reviewed plan exactly, or raise PlanChanged (blocking).
 
         Inside ``BEGIN IMMEDIATE`` the fingerprint is computed again on the
         write connection; when it differs nothing is written. ``targets`` and
         ``roots`` are the plan's. Returns ``{changed, rows}``: how many
         records changed and up to ``MAX_RESULT_ROWS`` descriptions of them
-        (``{prompt_id[, kept_id]}`` or ``{image_path}``).
+        (``{prompt_id[, kept_id]}`` or ``{image_path}``). ``marks`` are a
+        missing-links plan's stale removal marks; that apply also returns
+        ``marks``, how many it forgot.
         """
         if operation not in MAINTENANCE_OPERATIONS or operation == "workflow_storage":
             raise ValueError(f"Unknown maintenance operation {operation!r}")
@@ -683,9 +813,12 @@ class MaintenanceOperations:
         appliers = {
             "duplicate_prompts": self._apply_duplicate_prompts,
             "unused_components": self._apply_unused_components,
-            "missing_links": self._apply_missing_links,
         }
         with self._pair_transaction() as conn:
+            if operation == "missing_links":
+                return self._apply_missing_links(
+                    conn, fingerprint, targets, roots, list(marks)
+                )
             return appliers[operation](conn, fingerprint, targets, roots)
 
     def _apply_duplicate_prompts(self, conn, fingerprint, targets, _roots):
@@ -714,7 +847,7 @@ class MaintenanceOperations:
         ]
         return {"changed": changed, "rows": rows}
 
-    def _apply_missing_links(self, conn, fingerprint, targets, roots):
+    def _apply_missing_links(self, conn, fingerprint, targets, roots, marks):
         rows = []
         for batch in _batches(sorted(targets)):
             rows.extend(
@@ -731,10 +864,14 @@ class MaintenanceOperations:
             if state != "missing":  # back, or its source went away
                 raise PlanChanged("missing_links")
             candidates.append((row, owner))
-        if self._links_fingerprint(candidates) != fingerprint:
+        stale = _stale_marks(_mark_rows(conn, marks) if marks else [], roots)
+        if [locator for locator, _owner in stale] != marks:  # a mark went or is valid
+            raise PlanChanged("missing_links")
+        if self._links_fingerprint(candidates, stale) != fingerprint:
             raise PlanChanged("missing_links")
         changed = _delete_ids(conn, "generated_images", [row[0] for row in rows])
         return {
             "changed": changed,
+            "marks": clear_marks(conn, marks),
             "rows": [{"image_path": row[1]} for row in rows[:MAX_RESULT_ROWS]],
         }

database/models.py

@@ -22,6 +22,10 @@ from .managed_connection import (
 from . import restore_stage
 from .library_schema import library_schema_error, migrate_library_state
 from .image_favorites import image_favorites_schema_error, migrate_image_favorites
+from .image_collections import (
+    image_collections_schema_error,
+    migrate_image_collections,
+)
 from .annotation_schema import annotation_schema_error, migrate_annotation_state
 from .autotag_schema import (
     autotag_schema_error,
@@ -34,6 +38,14 @@ from .review_schema import (
     review_without_annotations_error,
 )
 from .saved_views import migrate_saved_views, saved_views_schema_error
+
+try:
+    from ..utils.hashing import register_prompt_functions
+except ImportError:
+    from utils.hashing import register_prompt_functions
+from .image_categories import image_categories_schema_error, migrate_image_categories
+from .image_removal_schema import image_removals_schema_error, migrate_image_removals
+from .prompt_archive import migrate_prompt_archive, prompt_archive_schema_error
 from .workflow_documents import (
     DOCUMENT_ID_COLUMNS,
     migrate_workflow_documents,
@@ -148,12 +160,15 @@ def configure_connection(conn: sqlite3.Connection) -> None:
     (common on Windows) let other writers' polling busy handlers starve past
     BUSY_TIMEOUT_SECONDS and fail with "database is locked" (#242). Without
     WAL (for example an in-memory database) SQLite's FULL default is kept.
+    It also registers the prompt-key SQL functions (register_prompt_functions).
     """
     journal_mode = conn.execute("PRAGMA journal_mode = WAL").fetchone()[0]
     conn.execute("PRAGMA foreign_keys = ON")
     conn.execute(f"PRAGMA busy_timeout = {BUSY_TIMEOUT_SECONDS * 1000}")
     if str(journal_mode).lower() == "wal":
         conn.execute("PRAGMA synchronous = NORMAL")
+    # History reads and the live-hint rule call Python's prompt key (#460)
+    register_prompt_functions(conn)
 
 
 class PromptModel:
@@ -337,6 +352,7 @@ class PromptModel:
         migrate_library_state(conn)
         migrate_image_favorites(conn)
         migrate_saved_views(conn)
+        migrate_image_collections(conn)
         # A review group without its annotation group is refused before the
         # annotation install could make it look valid (catalog only; the rows
         # are validated once, in migrate_review_state).
@@ -350,6 +366,12 @@ class PromptModel:
         migrate_annotation_state(conn)
         migrate_review_state(conn)
         migrate_autotag_state(conn)
+        # Image categories (#332): independent of every table above.
+        migrate_image_categories(conn)
+        # The Library parent archive (#443): independent of every table above.
+        migrate_prompt_archive(conn)
+        # Removal marks (#480): independent of every table above.
+        migrate_image_removals(conn)
         # Last: the older generated_images rebuilds run only before file_path.
         migrate_workflow_documents(conn)
 
@@ -1155,8 +1177,9 @@ class PromptModel:
         Args:
             path: File to inspect
             require_library_state: Also require the tables every current
-                database has (Library state, image favorites, saved views,
-                image annotations and the review queue), as a migrated
+                database has (Library state, image favorites, image
+                categories, saved views, collections, image annotations and
+                the review queue), as a migrated
                 restore stage must; old backups may lack them.
             documents: Read every workflow document and refuse a damaged
                 one. A restore checks its upload without it and repairs
@@ -1220,11 +1243,31 @@ class PromptModel:
             )
             if favorites_error:
                 return False, favorites_error
+            categories_error = image_categories_schema_error(
+                conn, allow_missing=not require_library_state
+            )
+            if categories_error:
+                return False, categories_error
+            archive_error = prompt_archive_schema_error(
+                conn, allow_missing=not require_library_state
+            )
+            if archive_error:
+                return False, archive_error
+            removals_error = image_removals_schema_error(
+                conn, allow_missing=not require_library_state
+            )
+            if removals_error:
+                return False, removals_error
             views_error = saved_views_schema_error(
                 conn, allow_missing=not require_library_state
             )
             if views_error:
                 return False, views_error
+            collections_error = image_collections_schema_error(
+                conn, allow_missing=not require_library_state
+            )
+            if collections_error:
+                return False, collections_error
             annotation_error = annotation_schema_error(
                 conn, allow_missing=not require_library_state
             )

database/operations.py

@@ -7,17 +7,25 @@ import json
 import math
 import datetime
 import os
-from typing import Optional, List, Dict, Any, Set, Tuple
+from typing import Any, Dict, Iterable, List, Optional, Sequence, Set, Tuple
+
+try:
+    from ..utils.inspection_response import inherited_category
+except ImportError:
+    from utils.inspection_response import inherited_category
 
 from .models import PromptModel, normalize_image_path, utc_now_iso
 from .pairs import PairDependencyError, PairOperations  # noqa: F401 (re-exported)
 from .library import LibraryOperations, titled
 from .image_favorites import ImageFavoriteOperations
+from .image_removal import ImageRemovalOperations, removed_from_library
+from .image_collections import ImageCollectionOperations
 from .annotations import AnnotationOperations
 from .review import ReviewOperations
 from .review_decisions import ReviewDecisionOperations
 from .saved_views import SavedViewOperations
 from .library_commands import LibraryCommandOperations
+from .library_archive import LibraryArchiveOperations, delete_prompt_rows
 from .vocabulary import VocabularyOperations
 from .execution_history import ExecutionHistoryOperations
 from .execution_contexts import ExecutionContextOperations
@@ -27,6 +35,7 @@ from .health import HealthOperations, iter_consistency_issues
 from .duplicate_copies import DuplicateCopyOperations
 from .workflow_storage import WorkflowStorageOperations
 from .category_import import CategoryImportOperations, EmptyReplacement  # noqa: F401
+from .image_categories import ImageCategoryOperations
 from .workflow_documents import (
     DocumentReader,
     documents_of_rows,
@@ -237,12 +246,17 @@ LEFT JOIN prompt_library_state pls ON pls.prompt_id = pp.positive_prompt_id
 WHERE gi.image_path IN ({marks}) OR gi.file_path IN ({marks}){fallback}"""
 # One image row describes a card only when no other row claims the same file
 # (as in get_image_link_summaries, several rows are ambiguous). The pair scope
-# and the linked positive follow _LINK_SUMMARY_SQL; category, rating, tags and
-# the searchable text and titles come from that positive (spec D12/D13). Every
+# and the linked positive follow _LINK_SUMMARY_SQL; rating, tags and the
+# searchable text and titles come from that positive (spec D12/D13). The raw
+# recipe and positive categories are read for the inherited category, which
+# Python decides (``inherited_category``, #332 MC4); SQL never filters by
+# category. Every
 # writer since the 3.2.4 migration stores file_path, so it is the path key.
 # The prompt-level conditions are uncorrelated IN sets SQLite builds once, and
 # the CASE evaluates the per-row ambiguity probe only for admitted rows.
-_LINK_FILTER_SQL = """SELECT gi.file_path, p.rating, {hit}, p.id
+_LINK_FILTER_SQL = """SELECT gi.file_path AS file_path, p.rating AS rating,
+       {hit} AS matched, p.id AS positive, pp.id IS NOT NULL AS has_pair,
+       pp.category AS pair_category, p.category AS category
 FROM generated_images gi
 LEFT JOIN prompt_pairs pp ON pp.id = (
     SELECT CASE WHEN COUNT(DISTINCT ip.pair_id) = 1 THEN MIN(ip.pair_id) END
@@ -251,10 +265,31 @@ JOIN prompts p ON p.id = COALESCE(pp.positive_prompt_id, gi.prompt_id)
 WHERE gi.file_path IS NOT NULL AND CASE WHEN {admit} THEN NOT EXISTS (
     SELECT 1 FROM generated_images other
     WHERE other.file_path = gi.file_path AND other.id <> gi.id) ELSE 0 END"""
+# _LINK_FILTER_SQL's rows as one JSON array, built by SQLite in one step (#354).
+# Python's sqlite3 releases and retakes the GIL around every step, so a read
+# that steps once per linked row waits on a busy ComfyUI thread thousands of
+# times. A BLOB value (no writer stores one) makes the value NULL (or
+# json_array refuses it), and the read streams instead. The raw categories are
+# put in only for a category read (#332), so plain reads stay as small as #354
+# measured them.
+_LINK_MATCHES_JSON_SQL = """SELECT CASE
+    WHEN max({blob}) THEN NULL
+    ELSE json_group_array(json_array({columns})) END
+FROM ({select})"""
+_LINK_PLAIN_COLUMNS = ("file_path", "rating", "matched", "positive")
+_LINK_CATEGORY_COLUMNS = _LINK_PLAIN_COLUMNS + ("has_pair", "pair_category", "category")
+# The columns a BLOB can reach: matched, positive and has_pair are computed.
+_LINK_STORED_COLUMNS = ("file_path", "rating", "pair_category", "category")
+# Set when this SQLite has no JSON functions: every later read streams.
+_one_step_unsupported = False
+# One warning per process when a read falls back to streaming.
+_one_step_warned = False
 # The linked positive of each given path (one unambiguous link, pair scope as
-# in _LINK_FILTER_SQL) with its category; {hit} as in link_filter_query. Used
-# for the few files whose current image tags meet a Tags filter (#249 B3).
-_LINK_FACTS_SQL = """SELECT gi.file_path, p.rating, {hit}, p.id, p.category
+# in _LINK_FILTER_SQL) with the raw categories of its inherited category; {hit}
+# as in link_filter_query. Used for the few files whose current image tags meet
+# a Tags filter (#249 B3).
+_LINK_FACTS_SQL = """SELECT gi.file_path, p.rating, {hit}, p.id,
+pp.id IS NOT NULL, pp.category, p.category
 FROM generated_images gi
 LEFT JOIN prompt_pairs pp ON pp.id = (
     SELECT CASE WHEN COUNT(DISTINCT ip.pair_id) = 1 THEN MIN(ip.pair_id) END
@@ -283,8 +318,24 @@ _LINK_FILTER_TAG = (
 )
 
 
+# One unambiguously linked image's facts for the Images filters, a plain tuple
+# (hit, rating, positive id, inherited category): built per linked row, so no
+# NamedTuple. The category is the inherited one (#332 MC4: the recipe's when
+# set, else the positive's), never the image's own category.
+LinkMatch = Tuple[bool, Optional[int], int, Any]
+
+
+def _link_match(rating, matched, positive, has_pair, pair_category, category):
+    inherited, _scope = inherited_category(category, pair_category, bool(has_pair))
+    return (bool(matched), rating, positive, inherited)
+
+
 def link_filter_query(
-    q: str, category: Optional[str], tags: List[str], *, every_link: bool = False
+    q: str,
+    tags: List[str],
+    *,
+    every_link: bool = False,
+    category: Optional[str] = None,
 ) -> Tuple[str, Dict[str, Any]]:
     """The workspace filter SELECT and its named parameters (all bound).
 
@@ -298,7 +349,9 @@ def link_filter_query(
         params["pattern"] = f"%{escape_like(q)}%"
     admitted = []
     if category is not None:
-        admitted.append("p.category = :category")
+        # Only narrows: an inherited category is one of the two raw values;
+        # which one is decided in Python (inherited_category, #332 MC4).
+        admitted.append("(p.category = :category OR pp.category = :category)")
         params["category"] = category
     for index, tag in enumerate(tags):
         admitted.append(_LINK_FILTER_TAG.format(index=index))
@@ -309,6 +362,50 @@ def link_filter_query(
     return sql, params
 
 
+def link_matches_json_query(sql: str, categories: bool = False) -> str:
+    """*sql* from link_filter_query, wrapped to return its rows as one JSON value.
+
+    With *categories* each row also carries the raw values the inherited
+    category is decided from; otherwise only path, rating, hit and positive.
+    """
+    columns = _LINK_CATEGORY_COLUMNS if categories else _LINK_PLAIN_COLUMNS
+    blob = " OR ".join(
+        f"typeof({name}) = 'blob'" for name in _LINK_STORED_COLUMNS if name in columns
+    )
+    return _LINK_MATCHES_JSON_SQL.format(
+        blob=blob, columns=", ".join(columns), select=sql
+    )
+
+
+def _link_matches_from_rows(
+    rows: Iterable[Sequence[Any]], categories: bool, wanted: Optional[Set[str]]
+) -> Dict[str, LinkMatch]:
+    """LinkMatch per wanted path from link rows (one-step or streamed).
+
+    Without *categories* the inherited category is None, as the caller then
+    never compares it.
+    """
+    matches: Dict[str, LinkMatch] = {}
+    for path, rating, matched, positive, *raw in rows:
+        if wanted is None or path in wanted:
+            if categories:
+                matches[path] = _link_match(rating, matched, positive, *raw[:3])
+            else:
+                matches[path] = (bool(matched), rating, positive, None)
+    return matches
+
+
+def _streamed_link_matches(
+    conn: sqlite3.Connection,
+    sql: str,
+    params: Dict[str, Any],
+    wanted: Optional[Set[str]],
+    categories: bool = False,
+) -> Dict[str, LinkMatch]:
+    """The link read stepped once per row (the fallback of the one-step read)."""
+    return _link_matches_from_rows(conn.execute(sql, params), categories, wanted)
+
+
 _ASCII_FOLD = str.maketrans("ABCDEFGHIJKLMNOPQRSTUVWXYZ", "abcdefghijklmnopqrstuvwxyz")
 
 
@@ -353,12 +450,14 @@ class PromptDatabase(
     PairOperations,
     LibraryOperations,
     LibraryCommandOperations,
+    LibraryArchiveOperations,
     VocabularyOperations,
     ExecutionHistoryOperations,
     ExecutionContextOperations,
     ExecutionOutputOperations,
     HistoryReadOperations,
     ImageFavoriteOperations,
+    ImageCollectionOperations,
     AnnotationOperations,
     ReviewOperations,
     ReviewDecisionOperations,
@@ -368,6 +467,8 @@ class PromptDatabase(
     DuplicateCopyOperations,
     WorkflowStorageOperations,
     CategoryImportOperations,
+    ImageCategoryOperations,
+    ImageRemovalOperations,
 ):
     """Database operations class for managing prompts."""
 
@@ -1709,6 +1810,11 @@ class PromptDatabase(
         """
         if not isinstance(metadata, dict):
             metadata = {}
+        if removed_from_library(conn, image_path):
+            # #480: the user removed this exact file from the library; its
+            # bytes are unchanged, so nothing links it again.
+            self.logger.debug("Not linking a file removed from the library")
+            return 0
         filename = os.path.basename(image_path)
         file_path = normalize_image_path(image_path)
         file_size, width, height, image_format = _coerce_file_info(metadata)
@@ -2247,16 +2353,10 @@ class PromptDatabase(
         Returns:
             Number of prompts actually deleted.
         """
-        count = 0
         with self._pair_transaction() as conn:
             self._ensure_prompts_unpaired(conn, prompt_ids)
-            documents = documents_of_rows(conn, "prompt_id", prompt_ids)
-            for pid in prompt_ids:
-                conn.execute("DELETE FROM generated_images WHERE prompt_id = ?", (pid,))
-                cursor = conn.execute("DELETE FROM prompts WHERE id = ?", (pid,))
-                if cursor.rowcount > 0:
-                    count += 1
-            release_documents(conn, documents)
+            # The workspace Library's delete runs the same statements (#443).
+            count = delete_prompt_rows(conn, list(dict.fromkeys(prompt_ids)))
             conn.commit()
         return count
 
@@ -2541,38 +2641,94 @@ class PromptDatabase(
     def get_image_link_matches(
         self,
         q: str,
-        category: Optional[str],
         tags: List[str],
         *,
         every_link: bool = False,
         wanted: Optional[Set[str]] = None,
-    ) -> Dict[str, Tuple[bool, Optional[int], int]]:
-        """Map normalized paths of unambiguously linked images to
-        (hit, rating, positive id).
+        category: Optional[str] = None,
+    ) -> Dict[str, LinkMatch]:
+        """Map normalized paths of unambiguously linked images to a LinkMatch
+        (hit, rating, positive id, inherited category).
 
-        Rows are limited to images whose linked positive has *category* and
-        every tag in *tags* (exact names). ``hit`` says whether *q* occurs in
+        Rows are limited to images whose linked positive has every tag in
+        *tags* (exact names). The category filter is applied by the caller to
+        the effective category (#332). ``hit`` says whether *q* occurs in
         the positive's text, Library title or a tag name; a pair's own title
         names its negative variant and is not searched.
-        Without category or tags only hits are returned, unless *every_link*
+        Without tags only hits are returned, unless *every_link*
         asks for every linked image (the rating sort and the positive count).
-        The positive id is the card's linked positive. One SELECT whose rows
-        are streamed; with *wanted* (the listing's normalized paths) only those
-        paths are kept, so memory is bounded by the listing, not the database.
+        The positive id is the card's linked positive. With *category* only
+        links whose raw recipe or positive category is that value are read (a
+        superset of the links that inherit it; the caller compares the
+        inherited value) and the inherited category is decided per row;
+        otherwise it is None, which keeps the plain reads cheap.
+
+        One SELECT, returned as one JSON value (#354): SQLite steps once, so
+        the read takes the GIL back a constant two or three times instead of
+        once per linked row while ComfyUI generates. Peak memory therefore
+        grows with the database's matching linked rows (about 530 bytes each,
+        more with the raw categories of a category read, freed on return); the
+        result is bounded by *wanted* (the listing's normalized paths) when
+        given. Where the JSON step fails (no JSON functions, a BLOB value, a
+        JSON text over SQLite's length limit) the rows are streamed as before.
         """
-        sql, params = link_filter_query(q, category, tags, every_link=every_link)
-        matches: Dict[str, Tuple[bool, Optional[int], int]] = {}
+        sql, params = link_filter_query(
+            q, tags, every_link=every_link, category=category
+        )
+        categories = category is not None
         with self.model.get_connection() as conn:
-            for path, rating, matched, positive in conn.execute(sql, params):
-                if wanted is None or path in wanted:
-                    matches[path] = (bool(matched), rating, positive)
-        return matches
+            rows = None
+            if not _one_step_unsupported:
+                rows = self._one_step_link_rows(conn, sql, params, categories)
+            if rows is None:
+                return _streamed_link_matches(conn, sql, params, wanted, categories)
+        return _link_matches_from_rows(rows, categories, wanted)
+
+    def _one_step_link_rows(
+        self,
+        conn: sqlite3.Connection,
+        sql: str,
+        params: Dict[str, Any],
+        categories: bool = False,
+    ) -> Optional[List[List[Any]]]:
+        """*sql*'s rows from one JSON value, or None when this read must stream.
+
+        An interrupted read (Move library retiring the connection) is raised
+        as before, never retried row by row.
+        """
+        global _one_step_unsupported, _one_step_warned
+        error: Optional[str] = None
+        try:
+            cursor = conn.execute(link_matches_json_query(sql, categories), params)
+            try:
+                ((document,),) = cursor.fetchall()
+            finally:
+                cursor.close()  # resets the statement: its snapshot ends now
+        except (sqlite3.OperationalError, sqlite3.DataError) as failure:
+            # DataError: the JSON text is longer than SQLITE_LIMIT_LENGTH.
+            error = str(failure)
+            if error == "interrupted":
+                raise
+            if error.startswith("no such function"):
+                _one_step_unsupported = True
+        else:
+            if document is not None:
+                return json.loads(document)
+            error = "a BLOB value"
+        if not _one_step_warned:
+            _one_step_warned = True
+            self.logger.warning(
+                "Reading image links row by row (slower while ComfyUI "
+                "generates); the one-step read failed: %s",
+                error,
+            )
+        return None
 
     def get_image_link_facts(
         self, paths: List[str], q: str = ""
-    ) -> Dict[str, Tuple[bool, Optional[int], int, Optional[str], Tuple[str, ...]]]:
+    ) -> Dict[str, Tuple[bool, Optional[int], int, Any, Tuple[str, ...]]]:
         """Map each normalized path with one unambiguous link to its positive's
-        (hit, rating, positive id, category, tag names).
+        (hit, rating, positive id, inherited category, tag names).
 
         The link is resolved as in get_image_link_matches, and ``hit`` says
         whether *q* occurs in the positive's text, Library title or a tag
@@ -2583,7 +2739,7 @@ class PromptDatabase(
         if q:
             hit = _LINK_FILTER_HIT
             params["pattern"] = f"%{escape_like(q)}%"
-        rows: Dict[str, Tuple[bool, Optional[int], int, Optional[str]]] = {}
+        rows: Dict[str, LinkMatch] = {}
         names: Dict[int, List[str]] = {}
         unique = list(dict.fromkeys(paths))
         with self.model.get_connection() as conn:
@@ -2592,10 +2748,8 @@ class PromptDatabase(
                 bound = {f"path{i}": path for i, path in enumerate(chunk)}
                 marks = ",".join(f":{key}" for key in bound)
                 sql = _LINK_FACTS_SQL.format(hit=hit, marks=marks)
-                for path, rating, matched, positive, category in conn.execute(
-                    sql, {**params, **bound}
-                ):
-                    rows[path] = (bool(matched), rating, positive, category)
+                for path, *row in conn.execute(sql, {**params, **bound}):
+                    rows[path] = _link_match(*row)
             positives = sorted({row[2] for row in rows.values()})
             for start in range(0, len(positives), _FACTS_CHUNK):
                 chunk = positives[start : start + _FACTS_CHUNK]
@@ -2608,20 +2762,16 @@ class PromptDatabase(
             path: (*row, tuple(names.get(row[2], ()))) for path, row in rows.items()
         }
 
-    def get_image_paths_matching(
-        self, q: str, category: Optional[str], tags: List[str]
-    ) -> Set[str]:
-        """Normalized paths whose linked positive matches *q*, *category* and *tags*.
+    def get_image_paths_matching(self, q: str, tags: List[str]) -> Set[str]:
+        """Normalized paths whose linked positive matches *q* and *tags*.
 
         See get_image_link_matches; an empty *q* matches every linked image
-        the category and tags admit.
+        the tags admit.
         """
         return {
             path
-            for path, (hit, _rating, _positive) in self.get_image_link_matches(
-                q, category, tags
-            ).items()
-            if hit or not q
+            for path, match in self.get_image_link_matches(q, tags).items()
+            if match[0] or not q
         }
 
     def get_prompt_id_for_image(self, image_path: str) -> Optional[int]:

database/pair_ingestion.py

@@ -1,7 +1,14 @@
-"""Atomic metadata enrichment for a single known generation context."""
+"""Atomic metadata enrichment for a single known generation context.
+
+Also the helpers both ingestion store paths share (#247): the file's link
+rows and the one-prompt-per-file rule (``file_link_rows``,
+``link_conflict``) and the marks a prompt created by ingestion carries
+(``Marks``, ``mark_created``).
+"""
 
 import os
-from typing import Any, Dict
+from dataclasses import dataclass
+from typing import Any, Dict, List, Optional, Tuple
 
 from .models import normalize_image_path
 from .operations import _coerce_file_info
@@ -37,16 +44,85 @@ def blank_positive(resolution: Dict[str, Any]) -> bool:
     return not (isinstance(text, str) and text.strip())
 
 
+@dataclass(frozen=True)
+class Marks:
+    """What a prompt ingestion creates carries, so it can be found and removed.
+
+    ``note`` is formatted with ``name``, the file's name.
+    """
+
+    category: str
+    tags: Tuple[str, ...]
+    note: str
+
+
+SCAN_MARKS = Marks("scanned", ("auto-scanned",), "Auto-scanned from {name}")
+RUN_MARKS = Marks("scanned", ("auto-scanned",), "Saved from a workflow run: {name}")
+
+
+def mark_created(conn: Any, db: Any, prompt_id: int, marks: Marks, name: str) -> None:
+    """Apply ``marks`` to a prompt row the caller just created on ``conn``."""
+    conn.execute(
+        "UPDATE prompts SET category = ?, notes = ? WHERE id = ?",
+        (marks.category, marks.note.format(name=name), prompt_id),
+    )
+    db._sync_prompt_tags(conn, prompt_id, list(marks.tags))
+
+
+def file_link_rows(conn: Any, image_path: str) -> List[Any]:
+    """The file's link rows, each with its prompt's hash.
+
+    Matched under the path and its resolved spelling (an output folder
+    reached through a symlink or junction), each normalized and raw;
+    deduplicated by row id.
+    """
+    rows: Dict[Any, Any] = {}
+    for spelling in dict.fromkeys((image_path, _resolved(image_path))):
+        for row in conn.execute(
+            "SELECT gi.*,p.hash AS positive_hash FROM generated_images gi "
+            "JOIN prompts p ON p.id=gi.prompt_id "
+            "WHERE gi.file_path=? OR gi.image_path=?",
+            (normalize_image_path(spelling), spelling),
+        ).fetchall():
+            rows.setdefault(row["id"], row)
+    return list(rows.values())
+
+
+def _resolved(path: str) -> str:
+    try:
+        return os.path.realpath(path)
+    except (OSError, ValueError):
+        return path
+
+
+def link_conflict(rows: List[Any], prompt_hash: str) -> bool:
+    """One prompt per file: more than one row, or a row of another prompt."""
+    return len(rows) > 1 or bool(rows and rows[0]["positive_hash"] != prompt_hash)
+
+
 def ingest_resolved_pair(
-    db: Any, image_path: str, metadata: Dict[str, Any], resolution: Dict[str, Any]
+    db: Any,
+    image_path: str,
+    metadata: Dict[str, Any],
+    resolution: Dict[str, Any],
+    *,
+    marks: Optional[Marks] = None,
 ) -> Dict[str, Any]:
+    """Store a resolved pair and link the file to it in one transaction.
+
+    With ``marks`` (ingestion from files), each pair component this call
+    creates carries them; without (the PromptManager node path) components
+    are created bare, as always.
+    """
     state = resolution.get("state", "unresolved")
     if state == "resolved" and blank_positive(resolution):
         state = "unresolved"
     if state != "resolved":
         return {"status": state, "pairs_added": 0, "links_added": 0}
     with db._pair_transaction() as conn:
-        return _ingest_resolved_pair_in(conn, db, image_path, metadata, resolution)
+        return _ingest_resolved_pair_in(
+            conn, db, image_path, metadata, resolution, marks=marks
+        )
 
 
 def _conflict() -> Dict[str, Any]:
@@ -61,6 +137,7 @@ def _ingest_resolved_pair_in(
     resolution: Dict[str, Any],
     *,
     provenance: Dict[str, Any] | None = None,
+    marks: Optional[Marks] = None,
 ) -> Dict[str, Any]:
     """``ingest_resolved_pair`` inside the caller's open ``_pair_transaction``.
 
@@ -69,7 +146,8 @@ def _ingest_resolved_pair_in(
     negative is a ``conflict`` and nothing is written. The caller owns the
     transaction, so its own later failure rolls the link back too.
     ``provenance`` replaces the link's default resolver provenance (Needs
-    review records the user's selection there).
+    review records the user's selection there). ``marks`` as in
+    ``ingest_resolved_pair``.
     """
     positive, negative = resolution["positive"], resolution["negative"]
     positive_text = positive.get("storage_text", positive["text"])
@@ -82,15 +160,8 @@ def _ingest_resolved_pair_in(
             "negative": negative,
         }
     encoded = dumps_strict(provenance, sort_keys=True, separators=(",", ":"))
-    images = conn.execute(
-        "SELECT gi.*,p.hash AS positive_hash FROM generated_images gi "
-        "JOIN prompts p ON p.id=gi.prompt_id "
-        "WHERE gi.file_path=? OR gi.image_path=?",
-        (normalized, image_path),
-    ).fetchall()
-    if len(images) > 1 or (
-        images and images[0]["positive_hash"] != generate_prompt_hash(positive_text)
-    ):
+    images = file_link_rows(conn, image_path)
+    if link_conflict(images, generate_prompt_hash(positive_text)):
         return _conflict()
     existing = images[0] if images else None
     if existing:
@@ -115,7 +186,12 @@ def _ingest_resolved_pair_in(
             generate_prompt_hash(negative_text) if negative_text.strip() else None,
         ),
     ).fetchone()
-    pair_id = db._save_pair(conn, positive_text, negative_text)
+    if marks is None:
+        pair_id = db._save_pair(conn, positive_text, negative_text)
+    else:
+        pair_id = _save_marked_pair(
+            conn, db, positive_text, negative_text, marks, os.path.basename(image_path)
+        )
     pair = conn.execute("SELECT * FROM prompt_pairs WHERE id=?", (pair_id,)).fetchone()
     pairs_added = int(prior_pair is None)
     file_size, width, height, image_format = _coerce_file_info(metadata)
@@ -197,6 +273,26 @@ def _ingest_resolved_pair_in(
     }
 
 
+def _save_marked_pair(
+    conn: Any,
+    db: Any,
+    positive_text: str,
+    negative_text: str,
+    marks: Marks,
+    name: str,
+) -> int:
+    """``_save_pair`` that marks each component it creates."""
+    texts = [positive_text] + ([negative_text] if negative_text.strip() else [])
+    ids = []
+    for text in texts:
+        prompt_id, created = db._pair_component_outcome(conn, text)
+        if created:
+            mark_created(conn, db, prompt_id, marks, name)
+        ids.append(prompt_id)
+    negative_id = ids[1] if len(ids) > 1 else None
+    return db._save_pair_components(conn, ids[0], negative_id)[0]
+
+
 def _document_form(conn: Any, values: Dict[str, Any]) -> Dict[str, Any]:
     """``values`` with the workflow and prompt graph texts stored once.
 

database/pairs.py

@@ -112,8 +112,14 @@ class PairOperations:
         tags: Optional[List[str]] = None,
         rating: Optional[int] = None,
         notes: Optional[str] = None,
+        fill_new_positive: bool = False,
     ) -> int:
-        """Save an ordered pair atomically; repeat saves preserve its metadata."""
+        """Save an ordered pair atomically; repeat saves preserve its metadata.
+
+        ``fill_new_positive`` also gives the positive prompt the category and
+        tags, only if this save inserted its row (#546). An existing prompt
+        never changes, so a cleared category stays cleared.
+        """
         with self._pair_transaction() as conn:
             return self._save_pair(
                 conn,
@@ -124,6 +130,7 @@ class PairOperations:
                 tags=tags,
                 rating=rating,
                 notes=notes,
+                fill_new_positive=fill_new_positive,
             )
 
     def _save_pair(
@@ -137,6 +144,7 @@ class PairOperations:
         tags: Optional[List[str]] = None,
         rating: Optional[int] = None,
         notes: Optional[str] = None,
+        fill_new_positive: bool = False,
     ) -> int:
         """Save an ordered pair atomically; repeat saves preserve its metadata."""
         if not isinstance(positive_text, str) or not positive_text.strip():
@@ -144,8 +152,13 @@ class PairOperations:
         if not isinstance(negative_text, str):
             raise ValueError("Negative prompt text must be a string; use '' for empty")
         # Validate metadata before any component insertion.
-        _validate_metadata(title, category, tags, rating, notes)
-        positive = self._pair_component(conn, positive_text)
+        tags = _validate_metadata(title, category, tags, rating, notes)
+        positive, created = self._pair_component_outcome(conn, positive_text)
+        if created and fill_new_positive:
+            conn.execute(
+                "UPDATE prompts SET category = ? WHERE id = ?", (category, positive)
+            )
+            self._sync_prompt_tags(conn, positive, tags or [])
         negative = (
             self._pair_component(conn, negative_text) if negative_text.strip() else None
         )

database/prompt_archive.py

@@ -0,0 +1,107 @@
+"""Library parent archive (#443, D152): prompts hidden from the shelf, restorable.
+
+A row means the Library parent is archived; no row means it is on the shelf.
+Nothing else about the prompt changes: its text, metadata, tags, run count,
+image links, pairs and recorded runs stay. Restore deletes the row. Deleting
+the prompt (any path) drops the row by cascade.
+
+A table of its own, not a column: ``prompt_library_state`` is validated by its
+exact definition, so a new column there would make older builds refuse the
+upgraded database, while older builds ignore an unknown table (they show the
+archived prompts again and keep the rows). Optional in old backups, required
+once a database is current.
+"""
+
+import re
+import sqlite3
+
+TABLE = "prompt_archive"
+MAX_STAMP_BYTES = 64
+# What ``utc_now_iso`` writes starts with a date; anything else was not written here.
+_STAMP_GLOB = "[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]T*"
+_DDL = (
+    f"CREATE TABLE {TABLE} (prompt_id INTEGER PRIMARY KEY, "
+    "archived_at TEXT NOT NULL, "
+    "FOREIGN KEY(prompt_id) REFERENCES prompts(id) ON DELETE CASCADE)"
+)
+_COLUMNS = (("prompt_id", "INTEGER", 0, 1), ("archived_at", "TEXT", 1, 0))
+_FOREIGN_KEYS = {("prompt_id", "prompts", "id", "CASCADE")}
+# A predicate on ``p`` (the prompts alias): the parent is not archived.
+SHELVED = f"NOT EXISTS(SELECT 1 FROM {TABLE} pa WHERE pa.prompt_id=p.id)"
+ARCHIVED = f"EXISTS(SELECT 1 FROM {TABLE} pa WHERE pa.prompt_id=p.id)"
+
+
+def _compact(sql: str) -> str:
+    return re.sub(r"\s+", "", sql or "").lower()
+
+
+def _structure_error(conn: sqlite3.Connection, allow_missing: bool) -> str | None:
+    objects = conn.execute(
+        "SELECT type,sql FROM sqlite_master WHERE name=? "
+        "OR (type IN ('index','trigger') AND tbl_name=?)",
+        (TABLE, TABLE),
+    ).fetchall()
+    if not objects:
+        return None if allow_missing else "Missing prompt archive schema"
+    tables = [sql for kind, sql in objects if kind == "table"]
+    if len(tables) != 1 or len(objects) != 1:
+        return "Prompt archive name is reserved by an unsupported schema object"
+    if _compact(tables[0]) != _compact(_DDL):
+        return "Prompt archive has an invalid table definition"
+    columns = tuple(
+        (row[1], row[2].upper(), row[3], row[5])
+        for row in conn.execute(f"PRAGMA table_info({TABLE})")
+    )
+    if columns != _COLUMNS:
+        return "Prompt archive has invalid columns"
+    foreign_keys = {
+        (row[3], row[2], row[4], row[6])
+        for row in conn.execute(f"PRAGMA foreign_key_list({TABLE})")
+    }
+    if foreign_keys != _FOREIGN_KEYS:
+        return "Prompt archive has invalid foreign key definitions"
+    return None
+
+
+def prompt_archive_schema_error(
+    conn: sqlite3.Connection, *, allow_missing: bool = True
+) -> str | None:
+    """Reject an unsupported archive schema or values; reads only.
+
+    A missing table is acceptable for backups that predate it unless
+    ``allow_missing`` is false.
+    """
+    error = _structure_error(conn, allow_missing)
+    if error is not None:
+        return error
+    if not conn.execute(
+        "SELECT 1 FROM sqlite_master WHERE type='table' AND name=?", (TABLE,)
+    ).fetchone():
+        return None
+    if conn.execute(f"PRAGMA foreign_key_check({TABLE})").fetchone():
+        return "Prompt archive contains foreign key violations"
+    if conn.execute(
+        f"SELECT 1 FROM {TABLE} WHERE typeof(archived_at)!='text' "  # nosec B608
+        f"OR length(CAST(archived_at AS BLOB))>{MAX_STAMP_BYTES} "
+        f"OR archived_at NOT GLOB '{_STAMP_GLOB}' LIMIT 1"
+    ).fetchone():
+        return "Prompt archive contains invalid values"
+    return None
+
+
+def migrate_prompt_archive(conn: sqlite3.Connection) -> None:
+    """Install the table atomically; validate before and after (no backfill)."""
+    conn.execute("SAVEPOINT prompt_archive_schema")
+    try:
+        error = _structure_error(conn, True)
+        if error:
+            raise sqlite3.DatabaseError(error)
+        conn.execute(_DDL.replace("CREATE TABLE", "CREATE TABLE IF NOT EXISTS", 1))
+        error = _structure_error(conn, False)
+        if error:
+            raise sqlite3.DatabaseError(error)
+        conn.execute("RELEASE prompt_archive_schema")
+    except BaseException:
+        conn.execute("ROLLBACK TO prompt_archive_schema")
+        conn.execute("RELEASE prompt_archive_schema")
+        raise

database/restore_stage.py

@@ -59,6 +59,7 @@ SUMMARY_KEYS = (
     "image_links",
     "runs",
     "saved_views",
+    "collections",
 )
 
 
@@ -144,9 +145,11 @@ def library_summary(conn: sqlite3.Connection) -> Dict[str, int]:
     ``positives`` are the Library's prompts (``library_counts``'s
     ``positive_prompts``); ``pairs`` the active saved pairs and
     ``archived_pairs`` the archived ones; ``image_links`` the indexed image
-    rows; ``runs`` the recorded executions.
+    rows; ``runs`` the recorded executions; ``collections`` the image
+    collections (#331).
     """
     from .library import _ELIGIBLE
+    from .prompt_archive import SHELVED, TABLE as ARCHIVE
 
     has_state = conn.execute(
         "SELECT 1 FROM sqlite_master WHERE type='table' AND "
@@ -155,9 +158,15 @@ def library_summary(conn: sqlite3.Connection) -> Dict[str, int]:
     has_pairs = conn.execute(
         "SELECT 1 FROM sqlite_master WHERE type='table' AND name='prompt_pairs'"
     ).fetchone()
+    has_archive = conn.execute(
+        "SELECT 1 FROM sqlite_master WHERE type='table' AND name=?", (ARCHIVE,)
+    ).fetchone()
     if has_state and has_pairs:
+        # Archived parents (#443) are off the shelf, as in library_counts.
         positives = conn.execute(
-            "SELECT COUNT(*) FROM prompts p WHERE " + _ELIGIBLE
+            "SELECT COUNT(*) FROM prompts p WHERE "
+            + _ELIGIBLE
+            + (" AND " + SHELVED if has_archive else "")
         ).fetchone()[0]
     else:
         positives = _count(conn, "prompts")
@@ -169,6 +178,7 @@ def library_summary(conn: sqlite3.Connection) -> Dict[str, int]:
         "image_links": _count(conn, "generated_images"),
         "runs": _count(conn, "execution_runs"),
         "saved_views": _count(conn, "saved_views"),
+        "collections": _count(conn, "image_collections"),
     }
 
 
@@ -180,6 +190,7 @@ _FINGERPRINT_SQL = (
     ("prompt_pairs", "SELECT MAX(id), MAX(updated_at) FROM prompt_pairs"),
     ("execution_runs", "SELECT COUNT(*), MAX(rowid) FROM execution_runs"),
     ("saved_views", "SELECT MAX(rowid) FROM saved_views"),
+    ("image_collections", "SELECT MAX(rowid) FROM image_collections"),
 )
 
 
@@ -190,9 +201,9 @@ def live_fingerprint(conn: sqlite3.Connection):
     tables a restore replaces, or when a prompt, pair, run or saved view is
     the newest edited (counts plus the newest row and edit of each table);
     the apply refuses with ``plan-changed`` then. It does not see every
-    edit (a tag or favorite change on an older row); those are kept in the
-    restore's safety backup. A read transaction the caller already has is
-    used and left open; one opened here is ended here.
+    edit (a tag, favorite or collection membership change on an older row);
+    those are kept in the restore's safety backup. A read transaction the
+    caller already has is used and left open; one opened here is ended here.
     """
     import json
 

database/review_decisions.py

@@ -5,8 +5,12 @@ A decision is one row of ``media_review_decisions`` for one item revision.
 ingester's compatible-only rules (``_ingest_resolved_pair_in``) in the same
 ``_pair_transaction`` as the decision row, the item's new state and revision
 and the review index revision; any conflict or later failure rolls all of it
-back. ``unresolved`` records the decision and links nothing. No decision
-counts a run, touches usage or calls an execution writer.
+back. ``manual`` (#536) is the same but for a Library prompt the reviewer chose:
+its link's provenance names a manual choice and carries no prompt sides, so it
+cannot pose as file evidence, and the decision's ``candidate_hash`` (the table
+requires one) is the digest of that choice. ``unresolved`` records the decision
+and links nothing. No decision counts a run, touches usage or calls an execution
+writer.
 
 Callers verify the file first (the capture must be the item's bytes and the
 current file must still hash to them); nothing here reads the filesystem.
@@ -17,6 +21,7 @@ import sqlite3
 
 from .annotation_schema import BYTES_TABLE
 from .annotations import _new_id
+from .library import _ELIGIBLE, _FROM, SHELVED
 from .library_commands import LibraryCommandError
 from .models import utc_now_iso
 from .review import (
@@ -30,9 +35,28 @@ from .review import (
     same_name_rows,
 )
 from .review_changes import notify_review_change
-from .review_schema import DECISIONS_TABLE, ITEMS_TABLE, canonical_evidence
+from .review_schema import (
+    DECISIONS_TABLE,
+    ITEMS_TABLE,
+    canonical_evidence,
+    evidence_digest,
+)
 
 DECISION_KIND = "user-selection"
+MANUAL_KIND = "manual-link"
+_MANUAL_POSITIVE = (
+    f"SELECT p.id,p.text FROM {_FROM} "  # nosec B608
+    f"WHERE p.id=? AND {_ELIGIBLE} AND {SHELVED}"
+)
+_MANUAL_PAIR = (
+    "SELECT COALESCE(n.text,'') AS negative FROM prompt_pairs pp "
+    "LEFT JOIN prompts n ON n.id=pp.negative_prompt_id "
+    "WHERE pp.id=? AND pp.positive_prompt_id=? AND pp.archived=0"
+)
+_ARCHIVED_BARE_PAIR = (
+    "SELECT 1 FROM prompt_pairs WHERE positive_prompt_id=? "
+    "AND negative_prompt_id IS NULL AND archived=1"
+)
 _INSERT_DECISION = (
     f"INSERT INTO {DECISIONS_TABLE}(id,item_id,decision_revision,"  # nosec B608
     "created_at,outcome,candidate_hash,evidence,pair_id,image_id) "
@@ -59,6 +83,8 @@ class ReviewCommandError(LibraryCommandError):
     ``fingerprint`` the current dependency fingerprint, when known;
     ``changed`` marks an association conflict caused by links that changed
     since the reviewer read them (rather than an incompatible choice).
+    ``prompt-missing``: the Library prompt or recipe of a manual link is gone,
+    archived or not that prompt's.
     """
 
     def __init__(
@@ -93,6 +119,7 @@ class ReviewDecisionOperations:
         sha256: str,
         outcome: str,
         candidate: dict | None = None,
+        manual: dict | None = None,
         image_path: str | None = None,
         metadata: dict | None = None,
         expected_fingerprint: str | None = None,
@@ -101,7 +128,9 @@ class ReviewDecisionOperations:
     ) -> dict:
         """Record the decision; return ``{item, total, pair}``.
 
-        ``selected`` needs the evidence ``candidate`` (with its ``hash``), the
+        ``selected`` needs the evidence ``candidate`` (with its ``hash``) or
+        ``manual`` (``{positive_id, pair_id}``; a null ``pair_id`` is no
+        negative), the
         ``image_path`` the scan and the monitor link under, the captured
         ``metadata`` and the ``expected_fingerprint`` the reviewer saw.
         ``aliases`` are the other spellings legacy rows of the same physical
@@ -115,9 +144,12 @@ class ReviewDecisionOperations:
         if outcome not in ("selected", "unresolved"):
             raise ValueError("outcome must be selected or unresolved")
         if outcome == "selected" and (
-            not isinstance(candidate, dict) or not image_path
+            (not isinstance(candidate, dict)) == (not isinstance(manual, dict))
+            or not image_path
         ):
-            raise ValueError("A selected decision needs a candidate and a file")
+            raise ValueError(
+                "A selected decision needs one candidate or manual choice and a file"
+            )
         try:
             with self._pair_transaction() as conn:
                 decided = self._decide_in(
@@ -128,6 +160,7 @@ class ReviewDecisionOperations:
                     sha256=sha256,
                     outcome=outcome,
                     candidate=candidate,
+                    manual=manual,
                     image_path=image_path,
                     metadata=metadata or {},
                     expected_fingerprint=expected_fingerprint,
@@ -158,13 +191,24 @@ class ReviewDecisionOperations:
             raise _Rollback(ReviewCommandError("file-changed", epoch))
         decision_id = _new_id()
         pair = None
-        candidate = command["candidate"] if command["outcome"] == "selected" else None
+        selected = command["outcome"] == "selected"
+        candidate = command["candidate"] if selected else None
+        manual = command["manual"] if selected else None
+        candidate_hash = candidate["hash"] if candidate is not None else None
         if candidate is not None:
             pair = self._apply_candidate(
                 conn, epoch, current, decision_id, total, **command
             )
+        elif manual is not None:
+            pair = self._apply_manual(
+                conn, epoch, current, decision_id, total, **command
+            )
+            manual = {"positive_id": manual["positive_id"], "pair_id": pair["id"]}
+            candidate_hash = evidence_digest(
+                canonical_evidence({"kind": MANUAL_KIND, **manual})
+            )
         evidence = {
-            "kind": DECISION_KIND,
+            "kind": MANUAL_KIND if manual is not None else DECISION_KIND,
             "decision_id": decision_id,
             "outcome": command["outcome"],
             "reviewed_digest": command["sha256"],
@@ -174,6 +218,8 @@ class ReviewDecisionOperations:
             "dependency_fingerprint": command["expected_fingerprint"],
             "pair": pair,
         }
+        if manual is not None:
+            evidence["manual"] = manual
         now = utc_now_iso()
         self._insert_review_decision(
             conn,
@@ -183,7 +229,7 @@ class ReviewDecisionOperations:
                 current["revision"] + 1,
                 now,
                 command["outcome"],
-                candidate["hash"] if candidate is not None else None,
+                candidate_hash,
                 canonical_evidence(evidence),
                 pair["id"] if pair else None,
                 pair["image_id"] if pair else None,
@@ -204,6 +250,77 @@ class ReviewDecisionOperations:
         self, conn, epoch, current, decision_id, total, **command
     ) -> dict:
         """Link the candidate's pair, compatible-only; raise on any conflict."""
+        candidate = command["candidate"]
+        positive, negative = candidate["positive"], candidate["negative"]
+        provenance = {
+            "kind": DECISION_KIND,
+            "decision_id": decision_id,
+            "reviewed_digest": command["sha256"],
+            "candidate_hash": candidate["hash"],
+            "resolver_version": current["resolver_version"],
+            "positive": positive,
+            "negative": negative,
+        }
+        return self._link_compatible(
+            conn, epoch, current, total, positive, negative, provenance, command
+        )
+
+    def _apply_manual(self, conn, epoch, current, decision_id, total, **command):
+        """Link the chosen Library prompt, compatible-only; raise otherwise."""
+        missing = _Rollback(
+            ReviewCommandError("prompt-missing", epoch, item=current, total=total)
+        )
+        positive_id = command["manual"]["positive_id"]
+        pair_id = command["manual"]["pair_id"]
+        row = conn.execute(_MANUAL_POSITIVE, (positive_id,)).fetchone()
+        if row is None:
+            raise missing
+        positive_text, negative_text = row[1], ""
+        if pair_id is not None:
+            chosen = conn.execute(_MANUAL_PAIR, (pair_id, positive_id)).fetchone()
+            if chosen is None:
+                raise missing
+            negative_text = chosen[0]
+        elif conn.execute(_ARCHIVED_BARE_PAIR, (positive_id,)).fetchone():
+            raise missing
+        provenance = {
+            "kind": MANUAL_KIND,
+            "decision_id": decision_id,
+            "reviewed_digest": command["sha256"],
+            "resolver_version": current["resolver_version"],
+            "positive_id": positive_id,
+            "pair_id": pair_id,
+        }
+        # The sides name no provenance: only the ingester reads them.
+        pair = self._link_compatible(
+            conn,
+            epoch,
+            current,
+            total,
+            {"text": positive_text},
+            {"text": negative_text},
+            provenance,
+            command,
+        )
+        # A prompt whose stored hash is stale reaches another row: never link that.
+        reached = conn.execute(
+            "SELECT positive_prompt_id FROM prompt_pairs WHERE id=?", (pair["id"],)
+        ).fetchone()[0]
+        if reached != positive_id or pair_id not in (None, pair["id"]):
+            raise missing
+        return pair
+
+    def _link_compatible(
+        self,
+        conn,
+        epoch,
+        current,
+        total,
+        positive,
+        negative,
+        provenance,
+        command,
+    ) -> dict:
         # Imported here: pair_ingestion imports operations, which composes this.
         from .pair_ingestion import _ingest_resolved_pair_in
 
@@ -242,17 +359,6 @@ class ReviewDecisionOperations:
             # Enrich the one row of this file under the spelling it was
             # linked with, so the ingester's compatibility rules see it.
             image_path = rows[0][1]
-        candidate = command["candidate"]
-        positive, negative = candidate["positive"], candidate["negative"]
-        provenance = {
-            "kind": DECISION_KIND,
-            "decision_id": decision_id,
-            "reviewed_digest": command["sha256"],
-            "candidate_hash": candidate["hash"],
-            "resolver_version": current["resolver_version"],
-            "positive": positive,
-            "negative": negative,
-        }
         result = _ingest_resolved_pair_in(
             conn,
             self,

database/run_attribution.py

@@ -164,7 +164,7 @@ def _runs_by_location(db: Any, names: List[str]) -> Optional[Dict[tuple, dict]]:
     return found
 
 
-def _recorded_runs(
+def recorded_runs(
     db: Any,
     image_paths: Iterable[str],
     output_root: Optional[str],
@@ -201,7 +201,8 @@ def _recorded_runs(
     return attributed
 
 
-def _named_prompt(db: Any, run_id: str) -> Optional[int]:
+def named_prompt(db: Any, run_id: str) -> Optional[int]:
+    """The one stored prompt every positive context of ``run_id`` names, else None."""
     contexts = db.get_execution_contexts(run_id).get("contexts") or []
     named = {
         context.get("positive_prompt_id")
@@ -228,11 +229,11 @@ def stored_run_prompts(
     paths = list(dict.fromkeys(path for path in image_paths if path))
     result: Dict[str, Optional[int]] = dict.fromkeys(paths)
     prompts: Dict[str, Optional[int]] = {}
-    for path, (run_id, _nodes) in _recorded_runs(
+    for path, (run_id, _nodes) in recorded_runs(
         db, paths, output_root, path_style
     ).items():
         if run_id not in prompts:
-            prompts[run_id] = _named_prompt(db, run_id)
+            prompts[run_id] = named_prompt(db, run_id)
         result[path] = prompts[run_id]
     return result
 
@@ -275,7 +276,7 @@ def recorded_output(
 ) -> Optional[RecordedOutput]:
     """The recorded run facts for ``image_path``, else None (#386).
 
-    The file must be attributed to one run (``_recorded_runs``: one run
+    The file must be attributed to one run (``recorded_runs``: one run
     reported its location and it was written during that run). Read-only; it
     never links anything.
     """
@@ -286,7 +287,7 @@ def recorded_output(
     if own_transaction:  # outputs and texts from one state of history
         conn.execute("BEGIN")
     try:
-        found = _recorded_runs(db, [image_path], output_root, path_style)
+        found = recorded_runs(db, [image_path], output_root, path_style)
         if image_path not in found:
             return None
         run_id, nodes = found[image_path]

database/saved_views.py

@@ -33,8 +33,14 @@ MAX_TAG_LENGTH = 50
 _IMAGE_SORTS = ("newest", "oldest", "name", "name-desc", "rating")
 _LIBRARY_SORTS = ("newest", "oldest", "name", "rating")
 _MEDIA = ("all", "image", "video")
+# How a Library view's Tags match (#444): every tag, any of them, or parents
+# without tags ("untagged" never goes with tags; the listing refuses both).
+_TAG_MODES = ("all", "any", "untagged")
 _CONTROL = re.compile(r"[\x00-\x1f\x7f]")
 _SOURCE = re.compile(r"all|0|[1-9][0-9]{0,8}")
+# A collection id as the listing's ``collection`` query takes it (#331): none
+# ("") or 1 to 9 digits without a leading zero.
+_COLLECTION = re.compile(r"|[1-9][0-9]{0,8}")
 FALLBACK_NAME = "Saved view"
 
 
@@ -55,12 +61,18 @@ _STATE_FIELDS = {
         "tags": ("tags", None, ()),
         # The Favorites page's filter (#249 D51): a view saved there reopens it.
         "favorites": ("bool", None, False),
+        # A view saved on a collection page (#331 D140) reopens that
+        # collection; never together with favorites.
+        "collection": ("collection", None, ""),
     },
     "library": {
         "q": ("text", 500, ""),
         "category": ("text", 100, ""),
         "sort": ("choice", _LIBRARY_SORTS, "newest"),
         "tags": ("tags", None, ()),
+        # #444: the Tags match and the output folder (relative, "/"-joined).
+        "tag_mode": ("choice", _TAG_MODES, "all"),
+        "folder": ("text", 1024, ""),
     },
 }
 
@@ -125,6 +137,8 @@ def _validate_value(key: str, kind: str, limit, value: object) -> None:
         raise SavedViewInvalid(f"State '{key}' is not a supported value")
     if kind == "source" and not _SOURCE.fullmatch(value):
         raise SavedViewInvalid(f"State '{key}' must be 'all' or a source index")
+    if kind == "collection" and not _COLLECTION.fullmatch(value):
+        raise SavedViewInvalid(f"State '{key}' must be empty or a collection id")
     if kind == "text" and (len(value) > limit or _CONTROL.search(value)):
         raise SavedViewInvalid(f"State '{key}' is too long or has control characters")
 
@@ -142,6 +156,10 @@ def encode_state(page: object, state: object) -> str:
         )
     for key, (kind, limit, _default) in fields.items():
         _validate_value(key, kind, limit, state[key])
+    if state.get("favorites") is True and state.get("collection"):
+        raise SavedViewInvalid("A view cannot filter by favorites and a collection")
+    if state.get("tag_mode") == "untagged" and state.get("tags"):
+        raise SavedViewInvalid("A view cannot list untagged prompts and filter tags")
     encoded = json.dumps(
         {key: state[key] for key in fields}, ensure_ascii=False, separators=(",", ":")
     )
@@ -181,6 +199,13 @@ def normalize_state(page: str, raw: object) -> dict:
         except SavedViewInvalid:
             value = default
         state[key] = list(value) if kind == "tags" else value
+    # Never written by this build; a stored row with both opens the collection,
+    # as the listing does for a URL with both (#331 D140).
+    if state.get("favorites") is True and state.get("collection"):
+        state["favorites"] = False
+    # Never written by this build either: the tags win.
+    if state.get("tag_mode") == "untagged" and state.get("tags"):
+        state["tag_mode"] = "all"
     return state
 
 

database/scanned_prompts.py

@@ -0,0 +1,87 @@
+"""Link an output file to the prompt of one text, creating it when new (#247).
+
+The store step of ingestion from file metadata when the decision is a
+positive text (``utils.file_prompt``). The prompt insert and the link run in
+one ``BEGIN IMMEDIATE`` transaction: two writers never store one text twice,
+a failed link leaves no new prompt behind, and a file stays linked to one
+prompt (a file already linked to another prompt is a ``conflict``).
+"""
+
+import logging
+import os
+from typing import Any, Dict, Optional, Tuple
+
+from .pair_ingestion import Marks, file_link_rows, link_conflict, mark_created
+
+try:
+    from ..utils.hashing import generate_prompt_hash
+except ImportError:
+    from utils.hashing import generate_prompt_hash
+
+_LOGGER = logging.getLogger("prompt_manager.database.scanned_prompts")
+
+
+def store_scanned_prompt_or_raise(
+    db: Any, path: str, canonical: Dict[str, Any], text: str, marks: Marks
+) -> Tuple[str, Optional[int]]:
+    """``(status, prompt id)`` after linking ``path`` to ``text``'s prompt.
+
+    ``added`` (prompt created, carrying ``marks``), ``linked`` (stored text
+    reused), ``unchanged`` (already linked to it) or ``conflict`` (linked to
+    another prompt; nothing written, id None). Database errors are raised
+    and roll the whole store back, so a caller can run it again.
+    """
+    with db._pair_transaction() as conn:
+        rows = file_link_rows(conn, path)
+        if link_conflict(rows, generate_prompt_hash(text)):
+            return "conflict", None
+        if rows:
+            return "unchanged", rows[0]["prompt_id"]
+        prompt_id, created = db._pair_component_outcome(conn, text)
+        if created:
+            mark_created(conn, db, prompt_id, marks, os.path.basename(path))
+        db._insert_image_link(conn, prompt_id, path, canonical)
+        return ("added" if created else "linked"), prompt_id
+
+
+def store_scanned_prompt(
+    db: Any, path: str, canonical: Dict[str, Any], text: str, marks: Marks
+) -> Tuple[str, Optional[int]]:
+    """The scan's form: an error is logged and reported as ``("found", None)``.
+
+    A write that failed because Move library switched runs again on the new
+    library (``survive_library_switch``); the rerun re-checks the link rows.
+    """
+    try:
+        return db.survive_library_switch(
+            lambda: store_scanned_prompt_or_raise(db, path, canonical, text, marks)
+        )
+    except Exception as error:
+        _LOGGER.error(
+            f"Failed to store the prompt of {os.path.basename(path)}: {error}"
+        )
+        return "found", None
+
+
+def link_stored_prompt_or_raise(
+    db: Any, path: str, canonical: Dict[str, Any], prompt_id: int
+) -> Optional[str]:
+    """Link ``path`` to the stored prompt ``prompt_id`` (recorded history, #342).
+
+    ``linked``, ``unchanged`` (already linked to it), ``conflict`` (linked to
+    another prompt; nothing written) or None when the prompt is gone. One
+    ``BEGIN IMMEDIATE`` transaction; database errors are raised.
+    """
+    with db._pair_transaction() as conn:
+        rows = file_link_rows(conn, path)
+        if len(rows) > 1 or (rows and rows[0]["prompt_id"] != prompt_id):
+            return "conflict"
+        if rows:
+            return "unchanged"
+        exists = conn.execute(
+            "SELECT 1 FROM prompts WHERE id = ?", (prompt_id,)
+        ).fetchone()
+        if exists is None:
+            return None
+        db._insert_image_link(conn, prompt_id, path, canonical)
+        return "linked"

database/vocabulary.py

@@ -13,12 +13,15 @@ same connection before commit. Owner rows and their timestamps never change.
 
 Category consolidation is previewed in one ``library_snapshot`` and applied in
 one ``_pair_transaction`` that recomputes the owner projection and requires the
-preview's ``impact_token``; only rows carrying the exact source change.
+preview's ``impact_token``; only rows carrying the exact source change. Image
+rows holding the source (``image_categories``, #332) are owners too: they are
+counted, hashed into the token and renamed with the prompts and pairs.
 """
 
 import sqlite3
 
-from .library import _ELIGIBLE, _limit
+from .library import _ELIGIBLE, SHELVED_PAIR, UNTAGGED, _escape, _limit
+from .prompt_archive import SHELVED
 from .library_commands import _TOKEN, LibraryCommandError, _validate_epoch
 from .library_tokens import canonical_token
 from .models import utc_now_iso
@@ -36,30 +39,76 @@ _IMAGE_FILES = (
 )
 
 
-def _tag_rows(page: str) -> str:
+def _tag_rows(page: str, order: str = "page.id") -> str:
     """Count rows for the registry rows selected by ``page`` (id, name)."""
-    # Eligible parent components carrying a tag in the page, plus the
-    # positive parent of every active pair carrying it (always eligible).
+    # Eligible parent components on the shelf carrying a tag in the page,
+    # plus the positive parent of every active pair carrying it (always
+    # eligible) when that parent is on the shelf: archived parents (#443)
+    # are hidden with their pairs, so Browse lists what was counted.
     return (
         "WITH page AS (" + page + "),"
         "owners(tag_id,pid) AS ("
         "SELECT pt.tag_id,p.id FROM prompts p "
         "JOIN prompt_tags pt ON pt.prompt_id=p.id "
         "WHERE pt.tag_id IN (SELECT id FROM page) AND " + _ELIGIBLE + " "
+        "AND " + SHELVED + " "
         "UNION SELECT ppt.tag_id,pp.positive_prompt_id FROM prompt_pairs pp "
         "JOIN prompt_pair_tags ppt ON ppt.pair_id=pp.id "
-        "WHERE pp.archived=0 AND ppt.tag_id IN (SELECT id FROM page)),"
+        "WHERE pp.archived=0 AND " + SHELVED_PAIR + " "
+        "AND ppt.tag_id IN (SELECT id FROM page)),"
         "images(tag_id,n) AS (" + _IMAGE_FILES + " "
         "WHERE mit.tag_id IN (SELECT id FROM page) GROUP BY mit.tag_id) "
         "SELECT page.id,page.name,COUNT(DISTINCT owners.pid) AS prompt_count,"
         "COALESCE(MAX(images.n),0) AS image_count "
         "FROM page LEFT JOIN owners ON owners.tag_id=page.id "
         "LEFT JOIN images ON images.tag_id=page.id "
-        "GROUP BY page.id ORDER BY page.id"
+        "GROUP BY page.id ORDER BY " + order
     )
 
 
 _TAG_PAGE = _tag_rows("SELECT id,name FROM tags WHERE id>? ORDER BY id LIMIT ?")
+# #444 tag sorts: sort -> (key expression on tags/counted, direction). Ties and
+# "created" follow the id, so every order is total and keyset pages are exact.
+TAG_SORTS = {
+    "created": (None, "ASC"),
+    "name": ("name COLLATE NOCASE", "ASC"),
+    "name-desc": ("name COLLATE NOCASE", "DESC"),
+    "prompts": ("prompt_count", "DESC"),
+    "prompts-asc": ("prompt_count", "ASC"),
+}
+_MAX_SEARCH = 200
+_TAG_SEARCH = "name LIKE ? ESCAPE '\\'"
+# Every matching tag ranked by the prompt count its row shows (the owners rule
+# of ``_tag_rows``), then one keyset page of it with its image counts.
+_RANKED_TAG_PAGE = (
+    "WITH owners(tag_id,pid) AS ("
+    "SELECT pt.tag_id,p.id FROM prompts p "
+    "JOIN prompt_tags pt ON pt.prompt_id=p.id WHERE " + _ELIGIBLE + " "
+    "AND " + SHELVED + " "
+    "UNION SELECT ppt.tag_id,pp.positive_prompt_id FROM prompt_pairs pp "
+    "JOIN prompt_pair_tags ppt ON ppt.pair_id=pp.id WHERE pp.archived=0 "
+    "AND " + SHELVED_PAIR + "),"
+    "counted AS (SELECT t.id,t.name,COUNT(DISTINCT o.pid) AS prompt_count "
+    "FROM tags t LEFT JOIN owners o ON o.tag_id=t.id WHERE {search} "
+    "GROUP BY t.id),"
+    "page AS (SELECT id,name,prompt_count FROM counted WHERE {after} "
+    "ORDER BY prompt_count {direction},id LIMIT ?),"
+    "images(tag_id,n) AS (" + _IMAGE_FILES + " "
+    "WHERE mit.tag_id IN (SELECT id FROM page) GROUP BY mit.tag_id) "
+    "SELECT page.id,page.name,page.prompt_count,"
+    "COALESCE(images.n,0) AS image_count FROM page "
+    "LEFT JOIN images ON images.tag_id=page.id "
+    "ORDER BY page.prompt_count {direction},page.id"
+)
+_UNTAGGED_COUNT = (
+    "SELECT COUNT(*) FROM prompts p WHERE ("
+    + _ELIGIBLE
+    + ") AND "
+    + UNTAGGED
+    # Untagged prompts opens the shelf, which hides archived parents (#443).
+    + " AND "
+    + SHELVED
+)
 _TAG_ONE = _tag_rows("SELECT id,name FROM tags WHERE id=?")
 # Every owner kind a tag can sit on, for the delete confirmation.
 _TAG_IMPACT = (
@@ -97,16 +146,34 @@ def _validate_tag_id(tag_id: object) -> None:
         raise ValueError("Invalid tag ID")
 
 
-# The /library/options universe: nonblank values on eligible parents or on
-# active pairs, grouped exactly (whitespace and case variants stay distinct).
-_CATEGORY_GROUPS = (
-    "WITH owners(value,pid) AS ("
-    "SELECT p.category,p.id FROM prompts p WHERE p.category IS NOT NULL "
-    "AND TRIM(p.category)!='' AND " + _ELIGIBLE + " "
-    "UNION SELECT pp.category,pp.positive_prompt_id FROM prompt_pairs pp "
+# Category values in Tags & categories (#332 §7): the prompt-backed values
+# (nonblank values on eligible parents or on active pairs; ``prompt_count``
+# counts only parents on the shelf, so a value only archived parents (#443)
+# hold stays listed with 0, as a tag does; grouped exactly, so
+# whitespace and case variants stay distinct; /library/options lists the same
+# prompt-backed set with its own query) plus the values only image rows hold.
+# A prompt-backed value is ordered by its oldest owning positive; an image-only
+# value sorts after all of them (first_pid is SQLite's INTEGER maximum, above
+# any prompt id), then by value. ``image_count`` counts stored rows, including
+# files missing on disk. No FULL OUTER JOIN, so it runs on SQLite 3.31+.
+_IMAGE_ONLY_FIRST_PID = 2**63 - 1
+_CATEGORY_ROWS = (
+    "WITH owners(value,pid,shelved) AS ("
+    "SELECT p.category,p.id," + SHELVED + " FROM prompts p "
+    "WHERE p.category IS NOT NULL AND TRIM(p.category)!='' AND " + _ELIGIBLE + " "
+    "UNION SELECT pp.category,pp.positive_prompt_id," + SHELVED_PAIR + " "
+    "FROM prompt_pairs pp "
     "WHERE pp.archived=0 AND pp.category IS NOT NULL AND TRIM(pp.category)!=''),"
-    "grouped AS (SELECT value,MIN(pid) AS first_pid,"
-    "COUNT(DISTINCT pid) AS prompt_count FROM owners GROUP BY value) "
+    "image_values(value,image_count) AS ("
+    "SELECT category,COUNT(*) FROM image_categories GROUP BY category),"
+    "grouped(value,first_pid,prompt_count) AS ("
+    "SELECT value,MIN(pid),COUNT(DISTINCT CASE WHEN shelved THEN pid END) "
+    "FROM owners GROUP BY value "
+    "UNION ALL SELECT value," + str(_IMAGE_ONLY_FIRST_PID) + ",0 FROM image_values "
+    "WHERE value NOT IN (SELECT value FROM owners)),"
+    "counted AS (SELECT g.value,g.first_pid,g.prompt_count,"
+    "COALESCE(i.image_count,0) AS image_count FROM grouped g "
+    "LEFT JOIN image_values i ON i.value=g.value) "
 )
 
 
@@ -117,15 +184,23 @@ _CATEGORY_COMPONENTS = (
     "WHERE p.category=? ORDER BY p.id"
 )
 _CATEGORY_PAIRS = "SELECT id,archived FROM prompt_pairs WHERE category=? ORDER BY id"
+# Image rows holding one exact value (#332 DC7), an index search.
+_IMAGE_CATEGORY_ROWIDS = (
+    "SELECT rowid FROM image_categories WHERE category=? ORDER BY rowid"
+)
 _CATEGORY_EXISTS = (
     "SELECT EXISTS(SELECT 1 FROM prompts WHERE category=:v)"
     " OR EXISTS(SELECT 1 FROM prompt_pairs WHERE category=:v)"
+    " OR EXISTS(SELECT 1 FROM image_categories WHERE category=:v)"
 )
 
-# Pairs after components, so a failing pair update rolls both back.
+# Pairs after components and image rows last, so a failing update rolls every
+# earlier one back. An image row is keyed by its file, never by its value, so
+# merging into a value other files already hold cannot conflict.
 _CATEGORY_UPDATES = (
     "UPDATE prompts SET category=?,updated_at=? WHERE category=?",
     "UPDATE prompt_pairs SET category=?,updated_at=? WHERE category=?",
+    "UPDATE image_categories SET category=?,updated_at=? WHERE category=?",
 )
 
 
@@ -136,8 +211,15 @@ def category_impact_token(
     target_exists: bool,
     components: list,
     pairs: list,
+    *,
+    images: list = (),
 ) -> str:
-    """Hash a category projection like ``library_edit_token`` (no secret)."""
+    """Hash a category projection like ``library_edit_token`` (no secret).
+
+    ``images`` are the rowids of the image rows holding ``source`` (#332 DC7).
+    With none the preimage has no ``images`` key, so a prompt-only token keeps
+    the value it had before image categories existed.
+    """
     preimage = {
         "epoch": epoch,
         "source": source,
@@ -146,6 +228,8 @@ def category_impact_token(
         "components": sorted([int(i), bool(flag)] for i, flag in components),
         "pairs": sorted([int(i), bool(flag)] for i, flag in pairs),
     }
+    if images:
+        preimage["images"] = sorted(int(i) for i in images)
     return canonical_token(_CATEGORY_DOMAIN, preimage)
 
 
@@ -177,6 +261,28 @@ def _tag_after(after: object) -> int:
     return after
 
 
+def _tag_search(search: object) -> str:
+    if not isinstance(search, str) or len(search) > _MAX_SEARCH:
+        raise ValueError(f"Tag search must be text of at most {_MAX_SEARCH} characters")
+    return search.strip()
+
+
+def _sorted_tag_after(after: object, sort: str) -> tuple | None:
+    """The ``[key, id]`` cursor of a name or prompt-count sort."""
+    if after is None:
+        return None
+    key_type = str if sort.startswith("name") else int
+    if (
+        not isinstance(after, list)
+        or len(after) != 2
+        or type(after[0]) is not key_type
+        or type(after[1]) is not int
+        or after[1] <= 0
+    ):
+        raise ValueError("Invalid vocabulary cursor")
+    return after[0], after[1]
+
+
 def _category_after(after: object) -> tuple[int, str] | None:
     if after is None:
         return None
@@ -325,7 +431,8 @@ class VocabularyOperations:
         pairs = [
             [row[0], bool(row[1])] for row in conn.execute(_CATEGORY_PAIRS, (source,))
         ]
-        if not components and not pairs:
+        images = [row[0] for row in conn.execute(_IMAGE_CATEGORY_ROWIDS, (source,))]
+        if not components and not pairs and not images:
             raise LibraryCommandError("vocabulary-conflict", epoch)
         target_exists = bool(
             conn.execute(_CATEGORY_EXISTS, {"v": target}).fetchone()[0]
@@ -339,9 +446,10 @@ class VocabularyOperations:
                 "other_prompts": len(components) - eligible,
                 "negative_variants": len(pairs) - archived,
                 "archived_negative_variants": archived,
+                "images": len(images),
             },
             "impact_token": category_impact_token(
-                epoch, source, target, target_exists, components, pairs
+                epoch, source, target, target_exists, components, pairs, images=images
             ),
         }
 
@@ -365,7 +473,8 @@ class VocabularyOperations:
     def apply_vocabulary_category(
         self, *, expected_epoch: str, source: str, target: str, impact_token: str
     ) -> dict:
-        """Set the exact ``source`` to ``target`` on every component and pair.
+        """Set the exact ``source`` to ``target`` on every component, pair
+        and image row.
 
         The recomputed projection must still match the preview's token; a
         mismatch is ``vocabulary-conflict`` with nothing written.
@@ -395,22 +504,80 @@ class VocabularyOperations:
         epoch: str,
         *,
         limit: int = 100,
-        after: int | None = None,
+        after: object = None,
+        search: str = "",
+        sort: str = "created",
     ) -> dict:
+        """One page of tags matching ``search`` (a literal, case-insensitive
+        substring) in ``sort`` order, with the untagged parents' count."""
         _limit(limit)
-        start = _tag_after(after)
-        total = conn.execute("SELECT COUNT(*) FROM tags").fetchone()[0]
-        rows = [dict(row) for row in conn.execute(_TAG_PAGE, (start, limit + 1))]
+        search = _tag_search(search)
+        if not isinstance(sort, str) or sort not in TAG_SORTS:
+            raise ValueError("sort must be one of " + ", ".join(TAG_SORTS))
+        where, params = "1=1", []
+        if search:
+            where, params = _TAG_SEARCH, [f"%{_escape(search)}%"]
+        total, untagged = conn.execute(
+            f"SELECT (SELECT COUNT(*) FROM tags WHERE {where}),({_UNTAGGED_COUNT})",
+            params,
+        ).fetchone()
+        rows = [
+            dict(row) for row in self._tag_page(conn, where, params, sort, after, limit)
+        ]
         has_more = len(rows) > limit
         rows = rows[:limit]
+        key, _direction = TAG_SORTS[sort]
+        next_key = None
+        if has_more:
+            last = rows[-1]
+            next_key = (
+                last["id"]
+                if key is None
+                else [
+                    last["prompt_count" if key == "prompt_count" else "name"],
+                    last["id"],
+                ]
+            )
         return {
             "library_epoch": epoch,
             "tags": rows,
             "total": total,
+            "untagged_count": untagged,
+            # Echoed so a client can tell this read applied its search and sort.
+            "search": search,
+            "sort": sort,
             "has_more": has_more,
-            "next_key": rows[-1]["id"] if has_more else None,
+            "next_key": next_key,
         }
 
+    @staticmethod
+    def _tag_page(conn, where, params, sort, after, limit):
+        key, direction = TAG_SORTS[sort]
+        if key is None:
+            page = (
+                f"SELECT id,name FROM tags WHERE {where} AND id>? ORDER BY id LIMIT ?"
+            )
+            return conn.execute(
+                _tag_rows(page), [*params, _tag_after(after), limit + 1]
+            )
+        cursor = _sorted_tag_after(after, sort)
+        operator = ">" if direction == "ASC" else "<"
+        keyset, keys = "1=1", []
+        if cursor is not None:
+            keyset = f"({key}{operator}? OR ({key}=? AND id>?))"
+            keys = [cursor[0], cursor[0], cursor[1]]
+        if key == "prompt_count":
+            sql = _RANKED_TAG_PAGE.format(
+                search=where, after=keyset, direction=direction
+            )
+            return conn.execute(sql, [*params, *keys, limit + 1])
+        page = (
+            f"SELECT id,name FROM tags WHERE {where} AND {keyset} "
+            f"ORDER BY {key} {direction},id LIMIT ?"
+        )
+        order = f"page.{key} {direction},page.id"
+        return conn.execute(_tag_rows(page, order), [*params, *keys, limit + 1])
+
     def _vocabulary_categories(
         self,
         conn: sqlite3.Connection,
@@ -422,15 +589,15 @@ class VocabularyOperations:
         _limit(limit)
         key = _category_after(after)
         total = conn.execute(
-            _CATEGORY_GROUPS + "SELECT COUNT(*) FROM grouped"
+            _CATEGORY_ROWS + "SELECT COUNT(*) FROM counted"
         ).fetchone()[0]
         where, params = "", []
         if key is not None:
             where = " WHERE first_pid>? OR (first_pid=? AND value>?)"
             params = [key[0], key[0], key[1]]
         rows = conn.execute(
-            _CATEGORY_GROUPS
-            + "SELECT value,first_pid,prompt_count FROM grouped"
+            _CATEGORY_ROWS
+            + "SELECT value,first_pid,prompt_count,image_count FROM counted"
             + where
             + " ORDER BY first_pid,value LIMIT ?",
             [*params, limit + 1],
@@ -440,7 +607,11 @@ class VocabularyOperations:
         return {
             "library_epoch": epoch,
             "categories": [
-                {"value": row["value"], "prompt_count": row["prompt_count"]}
+                {
+                    "value": row["value"],
+                    "prompt_count": row["prompt_count"],
+                    "image_count": row["image_count"],
+                }
                 for row in rows
             ],
             "total": total,
@@ -450,9 +621,18 @@ class VocabularyOperations:
             ),
         }
 
-    def list_vocabulary_tags(self, *, limit: int = 100, after: int | None = None):
+    def list_vocabulary_tags(
+        self,
+        *,
+        limit: int = 100,
+        after: object = None,
+        search: str = "",
+        sort: str = "created",
+    ):
         with self.library_snapshot() as (conn, epoch, _ceiling):
-            return self._vocabulary_tags(conn, epoch, limit=limit, after=after)
+            return self._vocabulary_tags(
+                conn, epoch, limit=limit, after=after, search=search, sort=sort
+            )
 
     def list_vocabulary_categories(
         self, *, limit: int = 100, after: list | None = None

docs/application-redesign.md

@@ -12,7 +12,8 @@ code. This plan proposes implementation order and acceptance gates.
 - The native Prompt Library merged in [#210](https://github.com/ComfyAssets/ComfyUI_PromptManager/pull/210) for [#208](https://github.com/ComfyAssets/ComfyUI_PromptManager/issues/208): one positive parent, saved negative variants, full selected text and a shared filtered image gallery. It does not invent chronological runs from counters or scan dates.
 - [Durable history storage](prompt-history-storage.md) records job attempts and outcomes from [#212](https://github.com/ComfyAssets/ComfyUI_PromptManager/pull/212), frozen prompt contexts from [#213](https://github.com/ComfyAssets/ComfyUI_PromptManager/pull/213), and observed run-owned output locators from [#214](https://github.com/ComfyAssets/ComfyUI_PromptManager/pull/214). Those locators do not verify file bytes or establish gallery-image associations. That association contract and the chronological execution timeline remain pending under [#209](https://github.com/ComfyAssets/ComfyUI_PromptManager/issues/209).
 - [#215](https://github.com/ComfyAssets/ComfyUI_PromptManager/issues/215) brings the shell, Images and natural-height Prompt Library presentation into the approved geometry and themes while retaining their existing operations. [#216](https://github.com/ComfyAssets/ComfyUI_PromptManager/issues/216) adds the shared current-file inspector with exact generation facts, scoped provenance, raw/download evidence and loaded-collection viewer controls, including a slideshow that pauses at native video. This delivery does not establish whole-application parity, change the default entry point or constitute a release. Recorded chronological run/context browsing continues under [#209](https://github.com/ComfyAssets/ComfyUI_PromptManager/issues/209); image tagging/review, System consolidation and remaining organization capabilities continue under #196.
-- Local Inspect (#249, PRs L1–L2) replaces the `#/inspect` handoff with the concept's native "Inspect a file" page: one local image or video previews inline and opens the shared viewer and full inspector on a record read entirely in the browser, with nothing uploaded, imported or stored. The legacy metadata page (`web/metadata.html`, served at `/prompt_manager/gallery.html`) stays reachable from Overview; its capabilities map to the shared inspector, except its one-click COPY ALL summary, whose ruled replacement ("Copy settings summary") is pending. Recorded deviations D60–D66 are in [TESTING.md](../TESTING.md). Local roles equal to the server's resolver follow in PR L3.
+- Local Inspect (#249, PRs L1–L3) replaces the `#/inspect` handoff with the concept's native "Inspect a file" page: one local image or video previews inline and opens the shared viewer and full inspector on a record read entirely in the browser, with nothing uploaded, imported or stored. The legacy metadata page (`web/metadata.html`, served at `/prompt_manager/gallery.html`) stays reachable from Overview; its capabilities map to the shared inspector, including its one-click COPY ALL summary, which is the shared inspector's "Copy settings summary" (D117, LI-4). PR L3 ([#286](https://github.com/ComfyAssets/ComfyUI_PromptManager/pull/286)) shipped that button and local roles equal to the server's resolver (`web/js/workspace/local-resolver.mjs`, TESTING.md "Local roles (#249 PR L3, decision LI-1)"). Recorded deviations D60–D66 and D117 are in [TESTING.md](../TESTING.md).
+- Collections ([#331](https://github.com/ComfyAssets/ComfyUI_PromptManager/issues/331), three PRs) adds named, hand-picked groups of images, stored in the library database by file location as favorites are: a COLLECTIONS sidebar group whose rows open Images filtered to one collection (`#/collection/<id>`) with rename and delete, Add to collection and Remove from collection in the Images selection bar, a Collections… checklist in the shared inspector for the side panel and the viewer, and saved views that keep a collection. Membership survives restarts, source reordering and System › Maintenance duplicate cleanup; no file is copied, moved or changed.
 
 ## Scope and compatibility
 

docs/prompt-send-bridge.md

@@ -18,9 +18,13 @@ protocol and peer checks reject unrelated messages. Same-origin scripts are
 trusted; this transport is not authentication against other scripts on that origin.
 Unsupported messaging is reported without breaking existing ComfyUI nodes.
 
+Apply works in one click: without a preview, the sender requests the ticket itself
+and applies it. Preview remains optional, and shows the exact change first.
+
 An apply timeout or abort after posting means the outcome is unknown. It cannot
 prove the host cancelled the write. The sender must inspect a fresh destination
-preview before deciding to send again; automatic retry must not overwrite edits.
+preview or choose the destination again before sending again; automatic retry must
+not overwrite edits. An error the host returned is a refusal: nothing was written.
 
 ## PromptManager adapter
 
@@ -31,7 +35,9 @@ field. Unknown/ambiguous metadata must not become an empty string.
 
 Previews show original and requested text plus positive prepend/append composition.
 Connected composition is marked unknown rather than guessing upstream values.
-Connected destination fields reject writes. Applying rechecks graph, node, widgets,
+Connected destination fields reject writes. The sender compares the destination's revision
+(node object and graph version) from discovery with the one at the preview, and refuses if the workflow changed.
+Applying rechecks graph, node, widgets,
 values and connections. Ordinary serialization cache synchronization is accepted
 only when it preserves live values. Both requested roles are checked before writing.
 

prompt_manager.py

@@ -26,13 +26,13 @@ except ImportError:
     InputTypeDict = dict
 
 try:
-    from .prompt_manager_base import PromptManagerBase
+    from .prompt_manager_base import SAVE_TO_LIBRARY_INPUT, PromptManagerBase
 except ImportError:
     import os
     import sys
 
     sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
-    from prompt_manager_base import PromptManagerBase
+    from prompt_manager_base import SAVE_TO_LIBRARY_INPUT, PromptManagerBase
 
 
 class PromptManager(PromptManagerBase, ComfyNodeABC):
@@ -115,6 +115,7 @@ class PromptManager(PromptManagerBase, ComfyNodeABC):
                         )
                     },
                 ),
+                "save_to_library": SAVE_TO_LIBRARY_INPUT,
             },
             "hidden": {
                 # The queued graph and this node's id: used to tell the positive
@@ -152,6 +153,7 @@ class PromptManager(PromptManagerBase, ComfyNodeABC):
         append_text: str = "",
         prompt: Optional[Dict[str, Any]] = None,
         unique_id: Optional[str] = None,
+        save_to_library: bool = True,
     ) -> Tuple[Any]:
         """
         Encode the text prompt and save it to the database.
@@ -164,6 +166,7 @@ class PromptManager(PromptManagerBase, ComfyNodeABC):
             search_text: Text to search for in past prompts
             prepend_text: Text to prepend to the main prompt
             append_text: Text to append to the main prompt
+            save_to_library: Off: nothing is saved, counted or tracked (#90)
 
         Returns:
             Tuple containing the conditioning for the diffusion model and the final
@@ -205,7 +208,9 @@ class PromptManager(PromptManagerBase, ComfyNodeABC):
         # Save prompt to database and set execution context for gallery tracking
         prompt_id = None
         extended_tags = []
-        if storage_text and storage_text.strip():
+        if not save_to_library:
+            self._skip_not_saved(prompt, unique_id)
+        elif storage_text and storage_text.strip():
             self.logger.debug(f"Processing prompt text: {storage_text[:100]}...")
 
             # Add prepend/append info to tags if they exist
@@ -249,6 +254,11 @@ class PromptManager(PromptManagerBase, ComfyNodeABC):
         tokens = clip.tokenize(encoding_text)
         conditioning = clip.encode_from_tokens_scheduled(tokens)
 
+        self.logger.info(f"CLIP encoding completed, text: {repr(encoding_text)[:80]}")
+        result = (conditioning, encoding_text)
+        if not save_to_library:
+            return result  # #90: no metadata registration, no history text
+
         # Register with ComfyUI integration for standard metadata compatibility
         node_id = f"promptmanager_{int(time.time() * 1000)}"
         self.comfyui_integration.register_prompt(
@@ -262,12 +272,15 @@ class PromptManager(PromptManagerBase, ComfyNodeABC):
                 "append_text": append_text.strip() if append_text else None,
             },
         )
-
-        self.logger.info(f"CLIP encoding completed, text: {repr(encoding_text)[:80]}")
-        result = (conditioning, encoding_text)
         record_runtime_context(
             type(self).__name__, text, prepend_text, append_text, encoding_text
         )
+        self._record_cached_item(
+            unique_id,
+            (encoding_text,),
+            storage_text,
+            fields=((text, prepend_text, append_text),),
+        )
         return result
 
     @classmethod

prompt_manager_base.py

@@ -23,9 +23,16 @@ try:
     from .utils.image_monitor import get_image_monitor
     from .utils.prompt_tracker import get_prompt_tracker
     from .utils.hashing import generate_prompt_hash
-    from .utils.prompt_graph import resolve_text, run_prompt_nodes
+    from .utils.prompt_graph import resolve_text, run_prompt_nodes, save_setting
     from .utils.run_keys import executing_run_id, prompt_node_key
     from .utils.usage_tracking import PENDING_FIRST_USE
+    from .utils.cached_runs import (
+        CACHED_RUNS,
+        Role,
+        Seen,
+        own_counts,
+        stored_facts,
+    )
 except ImportError:
     import sys
 
@@ -35,9 +42,32 @@ except ImportError:
     from utils.image_monitor import get_image_monitor
     from utils.prompt_tracker import get_prompt_tracker
     from utils.hashing import generate_prompt_hash
-    from utils.prompt_graph import resolve_text, run_prompt_nodes
+    from utils.prompt_graph import resolve_text, run_prompt_nodes, save_setting
     from utils.run_keys import executing_run_id, prompt_node_key
     from utils.usage_tracking import PENDING_FIRST_USE
+    from utils.cached_runs import (
+        CACHED_RUNS,
+        Role,
+        Seen,
+        own_counts,
+        stored_facts,
+    )
+
+
+# The optional input every PromptManager node declares last (#90): declared
+# last so no widget value of a workflow saved before it shifts.
+SAVE_TO_LIBRARY_INPUT = (
+    "BOOLEAN",
+    {
+        "default": True,
+        "label_on": "save",
+        "label_off": "skip",
+        "tooltip": (
+            "Save this node's prompt to the library, count its runs and link its "
+            "images. Off: PromptManager ignores the run; the output is unchanged."
+        ),
+    },
+)
 
 
 class PromptManagerBase:
@@ -71,8 +101,10 @@ class PromptManagerBase:
         """Save the prompt to the SQLite database.
 
         Runs are normally counted by the queue hook (utils/usage_tracking.py), so a
-        save only counts one when asked to (batch items whose text the hook could not
-        see) or when the hook queued this prompt before it existed.
+        save only counts one when asked to (text the hook could not see, unless
+        this job already counted the node from ComfyUI's cache) or when the hook
+        queued this prompt before it existed. The two are independent: the
+        pending catch-up is written even when ``count_run`` is False.
 
         Args:
             text: The prompt text
@@ -140,7 +172,9 @@ class PromptManagerBase:
         resolved = resolve_text(prompt_graph, node_id)
         return {
             "is_run_prompt": node_id in run_prompt_nodes(prompt_graph),
+            # The hook skips a switch it cannot read (#90): the node counts
             "seen_at_queue": resolved is not None
+            and save_setting(prompt_graph, node_id) is True
             and generate_prompt_hash(resolved) == generate_prompt_hash(text),
             "known": True,
         }
@@ -167,8 +201,19 @@ class PromptManagerBase:
         batch_item = (
             role["known"] and role["is_run_prompt"] and not role["seen_at_queue"]
         )
+        counts = own_counts(
+            type(self).__name__,
+            stored_facts(text),
+            Role(
+                frozenset({"text"} if role["known"] and role["is_run_prompt"] else ())
+            ),
+            Seen(text=role["seen_at_queue"]),
+        )
         prompt_id = self._save_prompt_to_database(
-            text=text, category=category, tags=tags, count_run=batch_item
+            text=text,
+            category=category,
+            tags=tags,
+            count_run=bool(counts) and not self._replayed(unique_id),
         )
         if role["is_run_prompt"] and not prompt_id:
             # The save failed: an older entry of this key must not stand in (#342)
@@ -182,6 +227,44 @@ class PromptManagerBase:
             )
         return prompt_id
 
+    def _cached_runs(self) -> Any:
+        return getattr(self, "cached_runs", CACHED_RUNS)
+
+    def _replayed(self, unique_id: Any) -> bool:
+        """This job already counted the node from ComfyUI's cache (#347).
+
+        A RAM-pressure cache can free the entry after ``execution_cached``, so
+        the node executes in a job that replayed it: its own count is skipped.
+        """
+        try:
+            return unique_id is not None and self._cached_runs().replayed(unique_id)
+        except Exception as error:
+            self.logger.debug(f"Could not check the cached-run replay: {error}")
+            return False
+
+    def _record_cached_item(
+        self,
+        unique_id: Any,
+        outputs: tuple,
+        text: Any,
+        negative_text: Any = None,
+        fields: Optional[tuple] = None,
+    ) -> None:
+        """Remember this execution's outputs and stored text for cached jobs (#347).
+
+        ``fields`` are the ``(raw, prepend, append)`` texts this execution gave
+        ``record_runtime_context`` for each output, so a cached job's history
+        can record them too (#403).
+        """
+        if unique_id is None:
+            return
+        try:
+            self._cached_runs().record_item(
+                unique_id, outputs, stored_facts(text, negative_text), fields
+            )
+        except Exception as error:
+            self.logger.debug(f"Could not record the cached-run receipt: {error}")
+
     @staticmethod
     def _run_identity(prompt_graph: Any, unique_id: Any) -> Dict[str, Any]:
         """The tracker's proof that an image belongs to this execution (#342)."""
@@ -190,6 +273,24 @@ class PromptManagerBase:
             "run_id": executing_run_id(),
         }
 
+    def _skip_not_saved(self, prompt_graph: Any = None, unique_id: Any = None) -> None:
+        """``save_to_library`` is off: nothing is saved, counted or tracked (#90).
+
+        A literal off makes the node no run prompt (``utils.prompt_graph``), so
+        no image looks up its run key. A switch wired from a node the graph
+        cannot read keeps the node a run prompt: its run key is marked like an
+        empty editor's, so an earlier run's entry of that key never links this
+        run's images.
+        """
+        message = (
+            "Save to library is off for this node: its prompt is not saved, the "
+            "run is not counted and its images are not linked"
+        )
+        if isinstance(prompt_graph, dict) and unique_id is not None:
+            self._mark_untracked(prompt_graph, unique_id, message)
+        else:
+            self.logger.info(message)
+
     def _skip_empty_prompt(self, prompt_graph: Any, unique_id: Any) -> None:
         """The ``text`` editor is empty: save and track nothing (#342).
 

prompt_manager_pair.py

@@ -12,9 +12,21 @@ else:
 
 try:
     from .prompt_manager import IO, InputTypeDict, PromptManagerFocused
+    from .utils.cached_runs import (
+        PAIR,
+        Role,
+        Seen,
+        own_counts,
+        pair_components,
+        stored_facts,
+    )
     from .utils.hashing import generate_prompt_hash
     from .utils.pair_execution import record_pair_execution
-    from .utils.prompt_graph import intrinsic_pair_nodes, run_prompt_components
+    from .utils.prompt_graph import (
+        intrinsic_pair_nodes,
+        run_prompt_components,
+        save_setting,
+    )
     from .utils.prompt_pair_resolver import resolve_text_input
     from .utils.usage_tracking import (
         PENDING_FIRST_USE,
@@ -23,9 +35,21 @@ try:
     )
 except ImportError:
     from prompt_manager import IO, InputTypeDict, PromptManagerFocused
+    from utils.cached_runs import (
+        PAIR,
+        Role,
+        Seen,
+        own_counts,
+        pair_components,
+        stored_facts,
+    )
     from utils.hashing import generate_prompt_hash
     from utils.pair_execution import record_pair_execution
-    from utils.prompt_graph import intrinsic_pair_nodes, run_prompt_components
+    from utils.prompt_graph import (
+        intrinsic_pair_nodes,
+        run_prompt_components,
+        save_setting,
+    )
     from utils.prompt_pair_resolver import resolve_text_input
     from utils.usage_tracking import (
         PENDING_FIRST_USE,
@@ -74,8 +98,13 @@ class PromptManagerPair(PromptManagerFocused):
         prompt: Optional[Dict[str, Any]] = None,
         unique_id: Optional[str] = None,
         extra_pnginfo: Optional[Dict[str, Any]] = None,
+        save_to_library: bool = True,
     ) -> Tuple[Any, Any, str, str]:
-        """Encode both sides once; database and tracking failures never block CLIP."""
+        """Encode both sides once; database and tracking failures never block CLIP.
+
+        With ``save_to_library`` off nothing is saved, counted, tracked or
+        recorded (#90); the four outputs are the same.
+        """
         if clip is None:
             raise RuntimeError("ERROR: clip input is invalid: None")
         if not isinstance(text, str) or not isinstance(negative_text, str):
@@ -93,6 +122,10 @@ class PromptManagerPair(PromptManagerFocused):
         negative_conditioning = clip.encode_from_tokens_scheduled(
             clip.tokenize(negative_text)
         )
+        result = positive_conditioning, negative_conditioning, positive, negative_text
+        if not save_to_library:
+            self._skip_not_saved(prompt, unique_id)
+            return result
         record_pair_execution(
             extra_pnginfo,
             unique_id,
@@ -153,7 +186,6 @@ class PromptManagerPair(PromptManagerFocused):
             )
         except Exception as error:
             self.logger.warning(f"Could not register paired metadata: {error}")
-        result = positive_conditioning, negative_conditioning, positive, negative_text
         record_runtime_context(
             type(self).__name__,
             text,
@@ -165,6 +197,13 @@ class PromptManagerPair(PromptManagerFocused):
         record_runtime_context(
             type(self).__name__, negative_text, "", "", negative_text, role="negative"
         )
+        self._record_cached_item(
+            unique_id,
+            (positive, negative_text),
+            text,
+            negative_text,
+            fields=((text, prepend_text, append_text), (negative_text, "", "")),
+        )
         return result
 
     def _save_and_track_pair(
@@ -191,6 +230,8 @@ class PromptManagerPair(PromptManagerFocused):
             negative_text,
             category=category.strip() or None,
             tags=self._parse_tags(tags),
+            # The Library shows the prompt's own category and tags, not the pair's.
+            fill_new_positive=True,
         )
         pair = self.db.get_prompt_pair(pair_id)
         prompt_id = pair["positive_prompt_id"]
@@ -200,6 +241,9 @@ class PromptManagerPair(PromptManagerFocused):
         resolved_negative = (
             resolve_text_input(prompt, node_id, "negative_text") if known else None
         )
+        if known and save_setting(prompt, node_id) is not True:
+            # The hook skips a switch it cannot read (#90): the node counts
+            resolved_positive = resolved_negative = None
         positive_seen = resolved_positive is not None and generate_prompt_hash(
             resolved_positive
         ) == generate_prompt_hash(text)
@@ -209,36 +253,35 @@ class PromptManagerPair(PromptManagerFocused):
             and generate_prompt_hash(resolved_negative)
             == generate_prompt_hash(negative_text)
         )
+        negative_seen = resolved_negative is not None and generate_prompt_hash(
+            resolved_negative
+        ) == generate_prompt_hash(negative_text)
         positive_pending = getattr(self, "pending_first_use", PENDING_FIRST_USE)
         pair_pending = getattr(self, "pending_pair_first_use", PENDING_PAIR_FIRST_USE)
-        counted = set()
-        for field, component_text, resolved_text, component_id in (
-            ("text", text, resolved_positive, prompt_id),
-            (
-                "negative_text",
-                negative_text,
-                resolved_negative,
-                pair["negative_prompt_id"],
-            ),
-        ):
-            component_hash = generate_prompt_hash(component_text)
-            if (
-                field not in used_fields
-                or not component_id
-                or component_hash in counted
-            ):
+        facts = stored_facts(text, negative_text)
+        role = Role(frozenset(used_fields), pair_used)
+        # Own counts are skipped when this job already counted the node from
+        # ComfyUI's cache (#347); the pending first-use catch-up never is.
+        counts = (
+            []
+            if self._replayed(unique_id)
+            else own_counts(
+                PAIR, facts, role, Seen(positive_seen, negative_seen, pair_seen)
+            )
+        )
+        component_ids = {"text": prompt_id, "negative_text": pair["negative_prompt_id"]}
+        for field, component_hash in pair_components(facts, role):
+            component_id = component_ids[field]
+            if not component_id:
                 continue
-            counted.add(component_hash)
-            seen_at_queue = (
-                resolved_text is not None
-                and generate_prompt_hash(resolved_text) == component_hash
+            runs = positive_pending.consume(component_hash) + int(
+                ("prompt", component_hash) in counts
             )
-            runs = positive_pending.consume(component_hash) + int(not seen_at_queue)
             if runs:
                 self.db.record_prompt_use(component_id, times=runs)
         if pair_used:
             runs = pair_pending.consume(pair_run_key(text, negative_text)) + int(
-                not pair_seen
+                ("pair", facts.positive_hash, facts.negative_hash) in counts
             )
             if runs:
                 self.db.record_prompt_pair_use(pair_id, times=runs)

prompt_manager_text.py

@@ -26,13 +26,13 @@ except ImportError:
     InputTypeDict = dict
 
 try:
-    from .prompt_manager_base import PromptManagerBase
+    from .prompt_manager_base import SAVE_TO_LIBRARY_INPUT, PromptManagerBase
 except ImportError:
     import os
     import sys
 
     sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
-    from prompt_manager_base import PromptManagerBase
+    from prompt_manager_base import SAVE_TO_LIBRARY_INPUT, PromptManagerBase
 
 
 class PromptManagerText(PromptManagerBase, ComfyNodeABC):
@@ -115,6 +115,7 @@ class PromptManagerText(PromptManagerBase, ComfyNodeABC):
                         ),
                     },
                 ),
+                "save_to_library": SAVE_TO_LIBRARY_INPUT,
             },
             "hidden": {
                 # The queued graph and this node's id: used to tell the positive
@@ -149,6 +150,7 @@ class PromptManagerText(PromptManagerBase, ComfyNodeABC):
         append_text: str = "",
         prompt: Optional[Dict[str, Any]] = None,
         unique_id: Optional[str] = None,
+        save_to_library: bool = True,
     ) -> Tuple[str]:
         """
         Process the text prompt and save it to the database.
@@ -160,6 +162,7 @@ class PromptManagerText(PromptManagerBase, ComfyNodeABC):
             search_text: Text to search for in past prompts
             prepend_text: Text to prepend to the main prompt
             append_text: Text to append to the main prompt
+            save_to_library: Off: nothing is saved, counted or tracked (#90)
 
         Returns:
             Tuple containing the final processed text string
@@ -184,7 +187,9 @@ class PromptManagerText(PromptManagerBase, ComfyNodeABC):
         # Save prompt to database and set execution context for gallery tracking
         prompt_id = None
         extended_tags = []
-        if storage_text and storage_text.strip():
+        if not save_to_library:
+            self._skip_not_saved(prompt, unique_id)
+        elif storage_text and storage_text.strip():
             self.logger.debug(f"Processing prompt text: {storage_text[:100]}...")
 
             # Add prepend/append info to tags if they exist
@@ -220,6 +225,11 @@ class PromptManagerText(PromptManagerBase, ComfyNodeABC):
         else:
             self._skip_empty_prompt(prompt, unique_id)
 
+        self.logger.debug(f"Text processing completed: {final_text[:100]}...")
+        result = (final_text,)
+        if not save_to_library:
+            return result  # #90: no metadata registration, no history text
+
         # Register with ComfyUI integration for standard metadata compatibility
         node_id = f"promptmanagertext_{int(time.time() * 1000)}"
         self.comfyui_integration.register_prompt(
@@ -233,12 +243,15 @@ class PromptManagerText(PromptManagerBase, ComfyNodeABC):
                 "append_text": append_text.strip() if append_text else None,
             },
         )
-
-        self.logger.debug(f"Text processing completed: {final_text[:100]}...")
-        result = (final_text,)
         record_runtime_context(
             type(self).__name__, text, prepend_text, append_text, final_text
         )
+        self._record_cached_item(
+            unique_id,
+            (final_text,),
+            storage_text,
+            fields=((text, prepend_text, append_text),),
+        )
         return result
 
     @classmethod

py/api/__init__.py

@@ -19,6 +19,7 @@ Split into domain-specific mixins for maintainability:
 - SystemRoutesMixin: System health check, Overview and usage statistics
 - LibraryLocationRoutesMixin: where the library lives, Move library, Keep it here
 - MaintenanceRoutesMixin: reviewed maintenance plans (preview, apply)
+- LibraryDeleteRoutesMixin: the Library's Delete… (archive paired) and Restore
 - WorkflowStorageRoutesMixin: store each workflow once, then Reclaim space
 - DuplicateFilesMixin: duplicate image files as find and removal jobs
 - LoraImportRoutesMixin: the reviewed, staged LoRA reference import job
@@ -40,14 +41,17 @@ from aiohttp import web
 from PIL import Image
 
 from .prompts import PromptRoutesMixin
+from .revalidation import revalidated_response
 from .pairs import PairRoutesMixin
 from .library import LibraryRoutesMixin
+from .library_delete import LibraryDeleteRoutesMixin
 from .vocabulary import VocabularyRoutesMixin
 from .annotations import AnnotationRoutesMixin
 from .review import ReviewRoutesMixin
 from .review_recording import ReviewRecordingMixin
 from .review_events import ReviewEventsMixin
 from .saved_views import SavedViewRoutesMixin
+from .collections import CollectionRoutesMixin
 from .history import HistoryRoutesMixin
 from .images import ImageRoutesMixin
 from .gallery_listing import WALK_STOPPED, RootListing, WalkOutcome
@@ -72,9 +76,14 @@ from .diagnostics_report import DiagnosticsReportMixin
 from .autotag_routes import AutotagRoutesMixin
 from .lora_integration import LoraIntegrationMixin
 from .lora_import_routes import LoraImportRoutesMixin
+from .image_categories import ImageCategoryRoutesMixin
+from .image_delete import ImageDeleteMixin
+from .image_return import ImageReturnMixin
+from .source_rescope import SourceRescopeMixin
 
 try:
     from ...database.operations import PromptDatabase
+    from ...utils.file_prompt import parse_comfyui_prompt
     from ...utils.logging_config import get_logger
     from ...utils.video_metadata import is_video_path, read_video_metadata
 except ImportError:
@@ -84,6 +93,7 @@ except ImportError:
         0, os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
     )
     from database.operations import PromptDatabase
+    from utils.file_prompt import parse_comfyui_prompt
     from utils.logging_config import get_logger
     from utils.video_metadata import is_video_path, read_video_metadata
 
@@ -308,12 +318,14 @@ async def _gzip_middleware(request, handler):
 class PromptManagerAPI(
     PairRoutesMixin,
     LibraryRoutesMixin,
+    LibraryDeleteRoutesMixin,
     VocabularyRoutesMixin,
     AnnotationRoutesMixin,
     ReviewRoutesMixin,
     ReviewRecordingMixin,
     ReviewEventsMixin,
     SavedViewRoutesMixin,
+    CollectionRoutesMixin,
     HistoryRoutesMixin,
     PromptRoutesMixin,
     ImageRoutesMixin,
@@ -336,6 +348,10 @@ class PromptManagerAPI(
     AutotagRoutesMixin,
     LoraIntegrationMixin,
     LoraImportRoutesMixin,
+    ImageCategoryRoutesMixin,
+    ImageDeleteMixin,
+    ImageReturnMixin,
+    SourceRescopeMixin,
 ):
     """REST API handler for PromptManager operations and web interface.
 
@@ -415,6 +431,12 @@ class PromptManagerAPI(
         # Reviewed maintenance plans under single-use tokens; a restart
         # forgets them (py/api/maintenance.py).
         self._maintenance_plans = PlanStore()
+        # #480: the removal marks the workspace listing hides, read once now so
+        # a listing page reads no table until a mark or the database changes.
+        try:
+            self._removal_marks()
+        except Exception:
+            self.logger.warning("Removal marks could not be read", exc_info=True)
 
         # A safety backup interrupted by a crash leaves its temp copy behind.
         try:
@@ -645,45 +667,51 @@ class PromptManagerAPI(
 
         @routes.get("/prompt_manager/workspace")
         async def serve_workspace_ui(request: web.Request) -> web.Response:
-            return self._serve_html_page("workspace.html", "Workspace")
+            return self._serve_html_page(request, "workspace.html", "Workspace")
 
         @routes.get("/prompt_manager/web")
         async def serve_web_ui(request):
-            return self._serve_html_page("index.html", "Web UI", cache=False)
+            return self._serve_html_page(request, "index.html", "Web UI", cache=False)
 
         @routes.get("/prompt_manager/gallery.html")
         async def serve_gallery_ui(request):
-            return self._serve_html_page("metadata.html", "Gallery")
+            return self._serve_html_page(request, "metadata.html", "Gallery")
 
         @routes.get("/prompt_manager/admin")
         async def serve_admin_ui(request):
-            return self._serve_html_page("admin.html", "Admin UI")
+            return self._serve_html_page(request, "admin.html", "Admin UI")
 
         @routes.get("/prompt_manager/gallery")
         async def serve_gallery_admin_ui(request):
-            return self._serve_html_page("gallery.html", "Gallery")
+            return self._serve_html_page(request, "gallery.html", "Gallery")
 
         # ── Static file serving ───────────────────────────────────────
 
         @routes.get("/prompt_manager/lib/{filepath:.*}")
         async def serve_lib_static(request):
             """Serve static library files (JS, CSS) from web/lib directory."""
-            return self._serve_static_file("lib", request.match_info.get("filepath"))
+            return self._serve_static_file(
+                request, "lib", request.match_info.get("filepath")
+            )
 
         @routes.get("/prompt_manager/js/{filepath:.*}")
         async def serve_js_static(request):
             """Serve static JavaScript files from web/js directory."""
-            return self._serve_static_file("js", request.match_info.get("filepath"))
+            return self._serve_static_file(
+                request, "js", request.match_info.get("filepath")
+            )
 
         # ── Register domain-specific routes from mixins ───────────────
 
         self._register_pair_routes(routes)
         self._register_library_routes(routes)
+        self._register_library_delete_routes(routes)
         self._register_vocabulary_routes(routes)
         self._register_annotation_routes(routes)
         self._register_review_routes(routes)
         self._register_review_event_routes(routes)
         self._register_saved_view_routes(routes)
+        self._register_collection_routes(routes)
         self._register_history_routes(routes)
         self._register_prompt_routes(routes)
         self._register_image_routes(routes)
@@ -700,6 +728,10 @@ class PromptManagerAPI(
         self._register_autotag_routes(routes)
         self._register_lora_routes(routes)
         self._register_lora_import_routes(routes)
+        self._register_image_category_routes(routes)
+        self._register_image_delete_routes(routes)
+        self._register_image_return_routes(routes)
+        self._register_rescope_routes(routes)
 
         # Register gzip compression middleware (once)
         global _gzip_registered
@@ -715,8 +747,11 @@ class PromptManagerAPI(
 
         self.logger.info("All routes registered with decorator pattern")
 
-    def _serve_static_file(self, subdir, filepath):
-        """Serve ``web/<subdir>/<filepath>``; 403 outside it, 404 when missing."""
+    def _serve_static_file(self, request, subdir, filepath):
+        """Serve ``web/<subdir>/<filepath>``; 403 outside it, 404 when missing.
+
+        A served file is revalidated on every reuse (#478, ``revalidation``).
+        """
         root = os.path.join(_get_project_root(), "web", subdir)
         exact = STATIC_EXACT_FILES.get((subdir, filepath))
         # An exact file passes the same containment check, its extension only.
@@ -731,10 +766,13 @@ class PromptManagerAPI(
             return web.Response(text="Not Found", status=404)
         with open(file_path, "rb") as f:
             content = f.read()
-        return web.Response(body=content, content_type=content_type)
+        return revalidated_response(request, content, content_type)
 
-    def _serve_html_page(self, filename, title, cache=True):
-        """Serve ``web/<filename>``; 404 when missing, 500 when unreadable."""
+    def _serve_html_page(self, request, filename, title, cache=True):
+        """Serve ``web/<filename>``; 404 when missing, 500 when unreadable.
+
+        A served page is revalidated on every reuse (#478, ``revalidation``).
+        """
         html_path = os.path.join(_get_project_root(), "web", filename)
         try:
             if cache and html_path in self._html_cache:
@@ -751,7 +789,9 @@ class PromptManagerAPI(
                     content_type="text/html",
                     status=404,
                 )
-            return web.Response(text=content, content_type="text/html", charset="utf-8")
+            return revalidated_response(
+                request, content.encode("utf-8"), "text/html", charset="utf-8"
+            )
         except Exception:
             self.logger.exception(f"Failed to load {title}")
             return web.Response(
@@ -1025,85 +1065,4 @@ class PromptManagerAPI(
 
     def _parse_comfyui_prompt(self, metadata):
         """Parse ComfyUI and A1111 prompt data from metadata."""
-        result = {
-            "prompt": None,
-            "workflow": None,
-            "parameters": {},
-            "positive_prompt": None,
-            "negative_prompt": None,
-        }
-
-        # Check for A1111/Forge style parameters first.
-        # The chunk is one block: a possibly multi-line positive prompt, then a
-        # "Negative prompt:" section, then a trailing "Steps: ..." settings line.
-        # Taking lines[0] as the positive prompt truncates any multi-line prompt
-        # to one line, so split on the settings line instead.
-        if "parameters" in metadata:
-            import re as _re
-
-            params = metadata["parameters"]
-            body = params
-            settings = ""
-            _sm = _re.search(r"\nSteps:\s", body)
-            if _sm:
-                settings = body[_sm.start() + 1 :].strip()
-                body = body[: _sm.start()]
-            negative = None
-            _nm = _re.search(r"(?im)^\s*negative prompt:\s*", body)
-            if _nm:
-                negative = body[_nm.end() :].strip()
-                body = body[: _nm.start()]
-            elif body.lower().lstrip().startswith("negative prompt:"):
-                negative = body.lower().lstrip()[len("negative prompt:") :].strip()
-                body = ""
-            result["positive_prompt"] = body.strip() or None
-            if negative:
-                result["negative_prompt"] = negative
-            # Store raw parameters too
-            result["parameters"]["parameters"] = params
-            if settings:
-                for _f in ("Steps", "Sampler", "Schedule type", "CFG scale", "Seed"):
-                    _fm = _re.search(
-                        r"(?i)(?:^|,\s*)" + _re.escape(_f) + r":\s*([^,]+)", settings
-                    )
-                    if _fm:
-                        result["parameters"][_f.lower().replace(" ", "_")] = _fm.group(
-                            1
-                        ).strip()
-
-        # If no A1111 format found, proceed with ComfyUI parsing
-        if result["positive_prompt"] is None:
-            # Check for direct prompt field
-            if "prompt" in metadata:
-                try:
-                    prompt_data = json.loads(metadata["prompt"])
-                    result["prompt"] = prompt_data
-                except json.JSONDecodeError:
-                    result["prompt"] = metadata["prompt"]
-
-            # Check for workflow
-            if "workflow" in metadata:
-                try:
-                    workflow_data = json.loads(metadata["workflow"])
-                    result["workflow"] = workflow_data
-                except json.JSONDecodeError:
-                    result["workflow"] = metadata["workflow"]
-
-            # Check for other common ComfyUI fields
-            common_fields = [
-                "positive",
-                "negative",
-                "steps",
-                "cfg",
-                "sampler",
-                "scheduler",
-                "seed",
-            ]
-            for field in common_fields:
-                if field in metadata:
-                    try:
-                        result["parameters"][field] = json.loads(metadata[field])
-                    except json.JSONDecodeError:
-                        result["parameters"][field] = metadata[field]
-
-        return result
+        return parse_comfyui_prompt(metadata)

py/api/admin.py

@@ -36,47 +36,67 @@ except ImportError:
 
 try:
     from ...utils import exit_signal
+    from ...utils.media_folders import (
+        in_trash_below_roots,
+        in_trash_folder,
+        is_skipped_folder,
+    )
 except ImportError:
     from utils import exit_signal
+    from utils.media_folders import (
+        in_trash_below_roots,
+        in_trash_folder,
+        is_skipped_folder,
+    )
 
 try:
-    from ...database.pair_ingestion import blank_positive, ingest_resolved_pair
+    from ...database.image_removal import mark_hides
+    from ...database.pair_ingestion import SCAN_MARKS, ingest_resolved_pair
     from ...database.run_attribution import (
+        RecordedOutput,
         host_output_directory,
-        stored_run_prompt,
-        stored_run_prompts,
+        named_prompt,
+        recorded_runs,
     )
-    from ...utils.generation_params import (
-        PLACEHOLDERS,
-        GenerationParamsError,
-        extract_generation_params,
-        parse_page_json,
+    from ...database.scanned_prompts import (
+        link_stored_prompt_or_raise,
+        store_scanned_prompt,
+    )
+    from ...utils.file_prompt import (
+        NEVER,
+        NOT_SAVED,
+        NOT_SAVED_WIRED,
+        PAIR,
+        Policy,
+        decide_file_prompt,
     )
-    from ...utils.prompt_pair_resolver import resolve_prompt_pair, sampler_less_prompt
-    from ...utils.review_capture import reviewable
 except ImportError:
-    from database.pair_ingestion import blank_positive, ingest_resolved_pair
+    from database.image_removal import mark_hides
+    from database.pair_ingestion import SCAN_MARKS, ingest_resolved_pair
     from database.run_attribution import (
+        RecordedOutput,
         host_output_directory,
-        stored_run_prompt,
-        stored_run_prompts,
+        named_prompt,
+        recorded_runs,
     )
-    from utils.generation_params import (
-        PLACEHOLDERS,
-        GenerationParamsError,
-        extract_generation_params,
-        parse_page_json,
+    from database.scanned_prompts import (
+        link_stored_prompt_or_raise,
+        store_scanned_prompt,
+    )
+    from utils.file_prompt import (
+        NEVER,
+        NOT_SAVED,
+        NOT_SAVED_WIRED,
+        PAIR,
+        Policy,
+        decide_file_prompt,
     )
-    from utils.prompt_pair_resolver import resolve_prompt_pair, sampler_less_prompt
-    from utils.review_capture import reviewable
 
 
 try:
     from ...database.library import display_title
-    from ...utils.hashing import generate_prompt_hash
 except ImportError:
     from database.library import display_title
-    from utils.hashing import generate_prompt_hash
 
 IMAGE_EXTENSIONS = (".png", ".jpg", ".jpeg", ".gif", ".webp", ".bmp", ".tiff")
 VIDEO_EXTENSIONS = (".mp4", ".avi", ".mov", ".mkv", ".webm", ".m4v", ".wmv")
@@ -110,10 +130,11 @@ DUPLICATE_FIND_LEGACY_TITLE = "Find duplicate image files (gallery page)"
 def _collect_media_files(output_dirs, extensions):
     """Media files under ``output_dirs`` (blocking), bounded and symlink-free.
 
-    Walks each root without following symlinks, skips ``thumbnails``
-    directories and symlinked files, never descends more than MAX_SCAN_DEPTH
-    levels and stops after MAX_SCAN_FILES files in total. Extensions match
-    case-insensitively and each path is listed once.
+    Walks each root without following symlinks, skips ``thumbnails`` and
+    trash folders (``utils.media_folders``) and symlinked files, never
+    descends more than MAX_SCAN_DEPTH levels and stops after MAX_SCAN_FILES
+    files in total. Extensions match case-insensitively and each path is
+    listed once.
     """
     wanted = {ext.lower() for ext in extensions}
     found = []
@@ -128,7 +149,7 @@ def _collect_media_files(output_dirs, extensions):
             dirnames[:] = sorted(
                 d
                 for d in dirnames
-                if d != "thumbnails"
+                if not is_skipped_folder(d)
                 and depth < MAX_SCAN_DEPTH
                 and not os.path.islink(os.path.join(current, d))
             )
@@ -228,7 +249,12 @@ SCAN_FINAL_STATES = {
     "error": "failed",
 }
 # The scope as the scan log's first line names it (the review dialog's words).
-SCAN_SCOPE_LOG = {"new": "new and unresolved files", "all": "all files"}
+SCAN_SCOPE_LOG = {
+    "new": "new and unresolved files",
+    "all": "all files",
+    "returned": "images returned to the library",
+}
+RETURN_JOB_TITLE = "Return images to the library"  # #498
 MIN_BATCHES_FOR_ESTIMATE = 2  # "about X min left" waits for this many batches
 # Log line prefix per outcome group (spec: + added, = known, ? review, ! error,
 # - no usable metadata).
@@ -256,10 +282,15 @@ SCAN_DETAILS = {
     "skipped": "Skipped · already linked",
     "ambiguous": "Needs review: more than one prompt could match",
     "unresolved": "Needs review: the prompt could not be traced in the workflow",
-    "conflict": "Needs review: already linked to a different prompt",
+    "conflict": "Kept: already linked to a different prompt",
     "failed": "Error: the prompt could not be stored",
     "error": "Error: the file could not be processed (see the server log)",
     "found": "Metadata found, but no prompt text to store",
+    "not_saved": "Skipped · its PromptManager node does not save to the library",
+    "not_saved_wired": (
+        "Skipped · its Save to library switch is wired from another node, so only "
+        "the run itself can link it"
+    ),
     None: "No prompt metadata in the file",
 }
 
@@ -318,22 +349,6 @@ def _file_size(path):
         return None
 
 
-def _with_file_size(canonical, media_file):
-    """Record the file's size in ``file_info`` unless the metadata carries one.
-
-    Stored as ``generated_images.file_size``; the "new" scan scope skips a known
-    file only while its size is unchanged.
-    """
-    info = canonical.get("file_info")
-    info = dict(info) if isinstance(info, dict) else {}
-    if info.get("size") is None:
-        size = _file_size(media_file)
-        if size is not None:
-            info["size"] = size
-    if info:
-        canonical["file_info"] = info
-
-
 def _scan_roots(output_dirs):
     """(absolute root, public label, listing index), the most specific first.
 
@@ -589,18 +604,56 @@ class _BatchHistory:
     """A scan batch's recorded-history lookup, made on the first file needing it.
 
     Most files link through their metadata and never ask; the first one that
-    does triggers one lookup for the whole batch (``_recorded_runs_for``).
+    does triggers one ``recorded_runs`` pass for the whole batch, from which
+    both the stored prompt (``get``) and the recorded saver (``recorded``)
+    of every file are read. A failure is logged and names nothing.
     """
 
     def __init__(self, api, media_files):
         self._api = api
-        self._files = media_files
-        self._found = None
+        self._files = [str(path) for path in media_files]
+        self._runs = None
+        self._prompts = {}
+
+    def _found(self):
+        if self._runs is None:
+            try:
+                self._runs = recorded_runs(
+                    self._api.db, self._files, host_output_directory(), None
+                )
+            except Exception:
+                self._api.logger.warning(
+                    "History attribution failed for a scan batch", exc_info=True
+                )
+                self._runs = {}
+        return self._runs
 
     def get(self, path):
-        if self._found is None:
-            self._found = self._api._recorded_runs_for(self._files)
-        return self._found.get(path)
+        """The stored prompt id history attributes to ``path``, else None."""
+        found = self._found().get(path)
+        if found is None:
+            return None
+        run_id = found[0]
+        if run_id not in self._prompts:
+            try:
+                self._prompts[run_id] = named_prompt(self._api.db, run_id)
+            except Exception:
+                self._api.logger.warning(
+                    "History attribution failed for a scan batch", exc_info=True
+                )
+                self._prompts[run_id] = None
+        return self._prompts[run_id]
+
+    def recorded(self, path):
+        """``RecordedOutput(saver, {})`` for an attributed file, else None.
+
+        ``saver`` is set only when the run reported the file from one node.
+        """
+        found = self._found().get(path)
+        if found is None:
+            return None
+        nodes = found[1]
+        return RecordedOutput(next(iter(nodes)) if len(nodes) == 1 else None, {})
 
 
 class AdminRoutesMixin:
@@ -848,6 +901,8 @@ class AdminRoutesMixin:
         extensions = IMAGE_EXTENSIONS + VIDEO_EXTENSIONS
         media_files = []
         seen = set()
+        # #480: a file removed from the library is never a copy or a keeper.
+        marks = self._removal_marks()
         for slot, root in enumerate(roots):
             for path in _collect_media_files([root], extensions):
                 try:
@@ -856,6 +911,9 @@ class AdminRoutesMixin:
                     stat = os.stat(path)
                 except OSError:
                     continue
+                locator = os.path.normcase(os.path.realpath(str(path)))
+                if locator in marks and mark_hides(marks, locator, path):
+                    continue
                 key = _physical_file_key(path, stat)
                 if key not in seen:
                     seen.add(key)
@@ -1039,13 +1097,21 @@ class AdminRoutesMixin:
         return result
 
     def _delete_one_duplicate(self, image_path, output_path):
-        """Delete one file and its thumbnail; return a failure reason or None."""
+        """Delete one file and its thumbnail; return a failure reason or None.
+
+        What is removed is exactly the folder's real path plus the name: a
+        link is removed itself, never its target, and the preview removed is
+        that name's. Both the link's place and what it leads to are checked.
+        """
         file_path = Path(image_path)
         if not file_path.is_absolute():
             file_path = output_path / file_path
 
         try:
-            rel_path = file_path.resolve().relative_to(output_path.resolve())
+            real_root = output_path.resolve()
+            rel_path = file_path.resolve().relative_to(real_root)
+            exact = Path(os.path.realpath(file_path.parent)) / file_path.name
+            exact_rel = exact.relative_to(real_root)
         except ValueError:
             self.logger.warning(
                 f"Attempted to delete file outside output directory: {image_path}"
@@ -1054,15 +1120,19 @@ class AdminRoutesMixin:
 
         if file_path.suffix.lower() not in DELETABLE_MEDIA_EXTENSIONS:
             return "not a media file"
-        if "thumbnails" in rel_path.parts:
+        if "thumbnails" in rel_path.parts or "thumbnails" in exact_rel.parts:
             return "thumbnails are managed by the gallery"
+        if in_trash_below_roots(file_path, [output_path]) or in_trash_folder(
+            str(exact_rel)
+        ):
+            return "it is in a trash folder"  # never unlinked from a trash (#543)
 
         if not file_path.is_file():
             return "file not found"
 
-        os.remove(file_path)
+        os.remove(exact)
         self.logger.info(f"Deleted duplicate image: {image_path}")
-        _remove_thumbnail(output_path.resolve(), rel_path, self.logger)
+        _remove_thumbnail(real_root, exact_rel, self.logger)
         return None
 
     async def get_statistics(self, request):
@@ -1336,13 +1406,17 @@ class AdminRoutesMixin:
             }
         )
 
-    def _start_scan_job(self, files=DEFAULT_SCAN_SCOPE, roots=None, output_dirs=None):
+    def _start_scan_job(
+        self, files=DEFAULT_SCAN_SCOPE, roots=None, output_dirs=None, returned=None
+    ):
         """Register the scan job synchronously; its runner starts on the loop.
 
         ``files`` is the scope (``SCAN_SCOPES``). ``roots`` selects sources by
         their index in ``output_dirs`` (the effective sources the caller
         resolved); None scans every source, resolved when the job starts.
-        Raises JobBusy while another record-changing job runs.
+        Raises JobBusy while another record-changing job runs. ``returned``
+        (#498, ``[(path, locator)]``) makes it "Return images to the library":
+        those files' removal marks go first, then only they are scanned.
         """
         if files not in SCAN_SCOPES:
             raise ValueError(f"Unknown scan scope: {files!r}")
@@ -1350,20 +1424,26 @@ class AdminRoutesMixin:
             output_dirs is None or not roots or max(roots) >= len(output_dirs)
         ):
             raise ValueError("A scoped scan needs the sources its roots index")
+        scope = {"files": files, "roots": None if roots is None else list(roots)}
+        if returned is not None:
+            scope = {"files": "returned", "roots": None, "images": len(returned)}
         job = self._jobs.start(
             SCAN_JOB_KIND,
-            SCAN_JOB_TITLE,
+            SCAN_JOB_TITLE if returned is None else RETURN_JOB_TITLE,
             record_changing=True,
-            scope={"files": files, "roots": None if roots is None else list(roots)},
-            runner=functools.partial(self._run_scan_job, output_dirs=output_dirs),
+            scope=scope,
+            runner=functools.partial(
+                self._run_scan_job, output_dirs=output_dirs, returned=returned
+            ),
             groups=SCAN_GROUP_NAMES,
         )
         self._scan_job = job
         return job
 
-    async def _run_scan_job(self, job, output_dirs=None):
+    async def _run_scan_job(self, job, output_dirs=None, returned=None):
         final = None
-        async for payload in self._scan_images_events(job, output_dirs):
+        extra = {} if returned is None else {"returned": returned}
+        async for payload in self._scan_images_events(job, output_dirs, **extra):
             job.publish(payload)
             final = payload.get("type")
         state = SCAN_FINAL_STATES.get(final, "finished")
@@ -1401,7 +1481,7 @@ class AdminRoutesMixin:
             )
         return response
 
-    async def _scan_images_events(self, job, output_dirs=None):
+    async def _scan_images_events(self, job, output_dirs=None, returned=None):
         """Yield progress payloads while scanning the output directories.
 
         Every effective source is walked, or only those ``job.scope["roots"]``
@@ -1439,9 +1519,16 @@ class AdminRoutesMixin:
                 0, f"Scanning {len(walked)} directory(ies) for media files..."
             )
 
-            media_files = await self._run_in_executor(
-                self._collect_output_media_sync, walked
-            )
+            if returned is None:
+                media_files = await self._run_in_executor(
+                    self._collect_output_media_sync, walked
+                )
+            else:
+                # #498: only the files whose marks this job deleted.
+                media_files = await self._run_in_executor(
+                    self._clear_returned_marks, returned
+                )
+                job.log_line(f"Returned {_plural(len(media_files), 'image')}")
             counts = dict.fromkeys(SCAN_COUNT_KEYS, 0)
             job.update(
                 total=len(media_files),
@@ -1516,8 +1603,13 @@ class AdminRoutesMixin:
             if job.cancelled:
                 return
             batch = media_files[batch_start : batch_start + SCAN_BATCH_SIZE]
-            skipped = [f for f in batch if str(f) in known]
-            to_read = [f for f in batch if str(f) not in known]
+            # #480: a file removed from the library is not read or linked
+            # again while its bytes are unchanged.
+            removed = await self._run_in_executor(self._removed_paths, batch)
+            skipped = [f for f in batch if str(f) in known or str(f) in removed]
+            to_read = [
+                f for f in batch if str(f) not in known and str(f) not in removed
+            ]
             outcomes = [_scan_outcome(f, roots, "skipped") for f in skipped]
             counts["processed"] += len(skipped)
             counts["unchanged"] += len(skipped)
@@ -1665,24 +1757,6 @@ class AdminRoutesMixin:
                 note(media_file, status)
         return counts
 
-    @staticmethod
-    def _graph_prompt_text(metadata):
-        """The positive prompt the browser parser traces from the graphs, or None.
-
-        Records parse as the legacy pages parsed them (NaN reads as null).
-        """
-        records = {}
-        for key in ("prompt", "workflow"):
-            value = metadata.get(key)
-            records[key] = parse_page_json(value) if isinstance(value, str) else value
-        try:
-            positive = extract_generation_params(records)["positivePrompt"]
-        except GenerationParamsError:
-            return None
-        if not isinstance(positive, str) or positive == PLACEHOLDERS["positivePrompt"]:
-            return None
-        return positive.strip() or None
-
     def _ingest_scanned_file(
         self,
         media_file,
@@ -1693,124 +1767,81 @@ class AdminRoutesMixin:
         records=None,
         history=None,
     ):
-        """Enrich exact pairs; retain legacy positive-only import for absent pairs.
+        """Store the prompt the shared per-file decision names (#247).
 
-        Returns the file's scan status, or None without prompt metadata. With
-        ``detailed``, a stored or linked file returns a dict instead: its
-        ``status``, the prompt's display ``title`` and, for a resolved pair,
-        the pair counts. When the resolver finds the file ambiguous (whether
-        or not the browser parser then links it) and ``ambiguous`` is a list,
-        ``media_file`` is appended to it; only a file that then returns
-        ``"ambiguous"`` (nothing linked it) is a Needs review case. An
-        ambiguous result with nothing to choose (``reviewable`` is False: fewer
-        than two candidates carry a prompt) that nothing links returns
-        ``"unresolved"`` instead, and ``media_file`` goes to ``untraced``.
-        The parsed records of either ambiguous file go to
-        ``records["canonical"]`` when ``records`` is a dict.
+        ``utils.file_prompt.decide_file_prompt`` (scan policy) decides; this
+        stores the result. Returns the file's scan status, or None without
+        prompt metadata. With ``detailed``, a stored or linked file returns a
+        dict instead: its ``status``, the prompt's display ``title`` and, for
+        a resolved pair, the pair counts. When the resolver finds the file
+        ambiguous (whether or not a later step then links it) and
+        ``ambiguous`` is a list, ``media_file`` is appended to it; only a file
+        that then returns ``"ambiguous"`` (nothing linked it) is a Needs
+        review case. An ambiguous result with nothing to choose
+        (``reviewable`` is False: fewer than two candidates carry a prompt)
+        goes to ``untraced`` instead and returns ``"unresolved"`` when nothing
+        links it. The parsed records of either ambiguous file go to
+        ``records["canonical"]`` when ``records`` is a dict. ``history`` is
+        the batch's lazy recorded-history lookup.
         """
-        if not metadata:
-            # No prompt metadata (--disable-metadata, bare savers): only the
-            # recorded run can say which prompt made it (#342)
-            return self._link_recorded_run(media_file, {}, detailed, history)
-        canonical = dict(metadata)
-        for key in ("prompt", "workflow"):
-            if isinstance(canonical.get(key), str):
-                try:
-                    canonical[key] = json.loads(canonical[key])
-                except (ValueError, TypeError):
-                    # Preserve malformed metadata for conservative resolver rejection.
-                    pass
-        if not canonical.get("prompt") and not canonical.get("parameters"):
-            return self._link_recorded_run(media_file, canonical, detailed, history)
-        _with_file_size(canonical, media_file)
-        resolution = resolve_prompt_pair(canonical)
-        if blank_positive(resolution):
-            # Only prepend/append text: no stored prompt can own it (#342)
-            resolution = {**resolution, "state": "unresolved"}
-        # Ambiguous without a choice: unresolved unless something links it.
-        unchoosable = resolution["state"] == "ambiguous" and not reviewable(resolution)
-        if unchoosable:
-            if untraced is not None:
-                untraced.append(media_file)
-            if records is not None:
-                records["canonical"] = canonical
-        elif resolution["state"] == "ambiguous" and ambiguous is not None:
-            ambiguous.append(media_file)
-            if records is not None:
-                records["canonical"] = canonical
-        if resolution["state"] == "resolved":
-            result = ingest_resolved_pair(
-                self.db, str(media_file), canonical, resolution
+        path = str(media_file)
+        if history is None:  # one file: history is still asked once
+            history = _BatchHistory(self, [media_file])
+        decision = decide_file_prompt(
+            metadata,
+            file_name=Path(path).name,
+            file_size=functools.partial(_file_size, media_file),
+            in_output=False,  # only the monitor policy reads it
+            lookup=functools.partial(history.recorded, path),
+            policy=Policy.SCAN,
+        )
+        if decision.kind in (NOT_SAVED, NOT_SAVED_WIRED):
+            # Save to library off (#90): no write, recorded-run fallback or
+            # Needs review item
+            return decision.kind
+        self._note_review(media_file, decision, ambiguous, untraced, records)
+        if decision.kind == NEVER:
+            if decision.try_recorded_run:
+                linked = self._link_recorded_run(
+                    media_file, decision.canonical, detailed, history
+                )
+                if linked is not None:
+                    return linked
+            return decision.unlinked_status
+        if decision.kind == PAIR:
+            # A rerun after a library move re-checks the link rows.
+            result = self.db.survive_library_switch(
+                lambda: ingest_resolved_pair(
+                    self.db,
+                    path,
+                    decision.canonical,
+                    decision.resolution,
+                    marks=SCAN_MARKS,
+                )
             )
             if not detailed:
                 return result["status"]
-            return {
-                **result,
-                "title": self._scan_title(media_file, resolution["positive"]["text"]),
-            }
-        if canonical.get("prompt") and resolution["state"] in (
-            "ambiguous",
-            "unresolved",
-        ):
-            # The resolver could not decide: link the prompt the inspector and the
-            # legacy pages show for this file (the browser parser, in Python).
-            # Graphs without a recognized sampler keep the legacy extractor below.
-            prompt_text = self._graph_prompt_text(metadata)
-            if not prompt_text:
-                linked = self._link_recorded_run(
-                    media_file, canonical, detailed, history
-                )
-                if linked is not None:
-                    return linked
-                return "unresolved" if unchoosable else resolution["state"]
-        elif resolution["state"] == "ambiguous":
-            return "unresolved" if unchoosable else "ambiguous"
-        elif resolution["state"] == "unresolved" and not isinstance(
-            canonical.get("parameters"), str
-        ):
-            return resolution["state"]
-        elif canonical.get("prompt"):
-            # No node takes a positive or negative input (a guider or wrapper
-            # graph): the one wired text, never a guess (#252).
-            found = sampler_less_prompt(canonical["prompt"])
-            prompt_text = found["text"]
-            if prompt_text is None and isinstance(canonical.get("parameters"), str):
-                # A metadata saver also wrote A1111 text: its positive prompt.
-                parsed = self._parse_comfyui_prompt(metadata)["positive_prompt"]
-                prompt_text = parsed.strip() if parsed and parsed.strip() else None
-            if prompt_text is None:
-                linked = self._link_recorded_run(
-                    media_file, canonical, detailed, history
-                )
-                if linked is not None:
-                    return linked
-                return "unresolved" if found["state"] == "ambiguous" else "found"
-        else:
-            prompt_text = self._parse_comfyui_prompt(metadata)["positive_prompt"]
-            if not (prompt_text and prompt_text.strip()):
-                return "found"
-            prompt_text = prompt_text.strip()
-
-        status = self._store_scanned_prompt(media_file, canonical, prompt_text)
+            title_text = decision.resolution["positive"]["text"]
+            return {**result, "title": self._scan_title(media_file, title_text)}
+        status, _prompt_id = store_scanned_prompt(
+            self.db, path, decision.canonical, decision.text, SCAN_MARKS
+        )
         if not detailed or status not in SCAN_TITLED_DETAILS:
             return status
-        return {"status": status, "title": self._scan_title(media_file, prompt_text)}
+        return {"status": status, "title": self._scan_title(media_file, decision.text)}
 
-    def _recorded_runs_for(self, media_files):
-        """``{path: prompt id or None}`` from recorded history for a scan batch.
-
-        One output lookup per chunk of names (``stored_run_prompts``), so a
-        batch never queries history once per file. An empty dict on failure.
-        """
-        try:
-            return stored_run_prompts(
-                self.db, [str(path) for path in media_files], host_output_directory()
-            )
-        except Exception:
-            self.logger.warning(
-                "History attribution failed for a scan batch", exc_info=True
-            )
-            return {}
+    @staticmethod
+    def _note_review(media_file, decision, ambiguous, untraced, records):
+        """Hand an ambiguous file to the batch's Needs review lists."""
+        if decision.review == "untraced":
+            if untraced is not None:
+                untraced.append(media_file)
+            if records is not None:
+                records["canonical"] = decision.canonical
+        elif decision.review == "ambiguous" and ambiguous is not None:
+            ambiguous.append(media_file)
+            if records is not None:
+                records["canonical"] = decision.canonical
 
     def _link_recorded_run(self, media_file, canonical, detailed=False, history=None):
         """Link a file recorded history attributes to one stored prompt (#342).
@@ -1819,31 +1850,25 @@ class AdminRoutesMixin:
         ``{"status", "title"}``), or None when history names no single stored
         prompt for the file (``database.run_attribution``). Never creates a
         prompt. Works without any prompt metadata in the file. ``history`` is
-        the batch's precomputed lookup; without it the file is looked up alone.
+        the batch's lookup (``_BatchHistory``). A file already linked to
+        another prompt is a ``conflict``: one prompt per file.
         """
-        if history is not None:
-            prompt_id = history.get(str(media_file))
-        else:
-            try:
-                prompt_id = stored_run_prompt(
-                    self.db, str(media_file), host_output_directory()
-                )
-            except Exception:
-                self.logger.warning(
-                    f"History attribution failed for {media_file.name}",
-                    exc_info=True,
-                )
-                return None
+        if history is None:
+            history = _BatchHistory(self, [media_file])
+        prompt_id = history.get(str(media_file))
         if prompt_id is None:
             return None
         try:
-            image_id = self.db.link_image_to_prompt(
-                prompt_id, str(media_file), metadata=canonical
+            status = self.db.survive_library_switch(
+                lambda: link_stored_prompt_or_raise(
+                    self.db, str(media_file), canonical, prompt_id
+                )
             )
         except Exception as e:
             self.logger.error(f"Failed to link {media_file.name} from history: {e}")
             return "found"
-        status = "linked" if image_id else "unchanged"
+        if status is None:
+            return None
         if not detailed or status not in SCAN_TITLED_DETAILS:
             return status
         prompt = self.db.get_prompt_by_id(prompt_id) or {}
@@ -1863,35 +1888,3 @@ class AdminRoutesMixin:
         except Exception:
             self.logger.warning("Scan row title could not be read; using its text")
         return display_title((), text)
-
-    def _store_scanned_prompt(self, media_file, canonical, prompt_text):
-        """Link ``media_file`` to ``prompt_text``'s prompt, saving it when new."""
-        prompt_hash = generate_prompt_hash(prompt_text)
-        existing = self.db.get_prompt_by_hash(prompt_hash)
-        if existing:
-            try:
-                image_id = self.db.link_image_to_prompt(
-                    existing["id"], str(media_file), metadata=canonical
-                )
-            except Exception as e:
-                self.logger.error(
-                    f"Failed to link {media_file.name} to existing prompt: {e}"
-                )
-                return "found"
-            return "linked" if image_id else "unchanged"
-
-        prompt_id = self.db.save_prompt(
-            prompt_text,
-            "scanned",
-            ["auto-scanned"],
-            None,
-            f"Auto-scanned from {media_file.name}",
-            prompt_hash,
-        )
-        if not prompt_id:
-            return "found"
-        try:
-            self.db.link_image_to_prompt(prompt_id, str(media_file), metadata=canonical)
-        except Exception as e:
-            self.logger.error(f"Failed to link {media_file.name} to new prompt: {e}")
-        return "added"

py/api/annotation_suggest.py

@@ -86,6 +86,23 @@ def unavailable_message(model_name: str) -> str:
     return f"{model_name} is not downloaded. {UNAVAILABLE_HINT}"
 
 
+def model_refusal(status: dict, model_type: str, model_name: str):
+    """Why *model_type* cannot run, from ``get_models_status()``, else None.
+
+    Not downloaded first (``unavailable_message``), then a backend package
+    that cannot be imported (#424). Both are a 409 ``model-unavailable``.
+    """
+    entry = status.get(model_type) or {}
+    if not entry.get("downloaded"):
+        return unavailable_message(model_name)
+    missing = entry.get("missing_packages") or []
+    if missing:
+        from ..autotag import missing_packages_message
+
+        return missing_packages_message(model_type, [str(name) for name in missing])
+    return None
+
+
 def run_suggestions(service, capture_path: str, model_type: str, options: dict):
     """Blocking: load (or swap to) *model_type*, then suggest for the capture.
 

py/api/annotations.py

@@ -21,13 +21,18 @@ from aiohttp import web
 from .annotation_suggest import (
     SUGGEST_FIELDS,
     OptionError,
+    model_refusal,
     run_suggestions,
     suggestion_rows,
-    unavailable_message,
     validate_options,
 )
 from .autotag_routes import model_busy_response
-from .images import _forbidden, _has_traversal, _unavailable_link, _verified_title
+
+# The target check is shared with the collection routes (#331); both names
+# stay importable from here.
+from .media_target import MAX_TARGET_PATH  # noqa: F401
+from .media_target import media_target as _target
+from .images import _unavailable_link, _verified_title
 from .prompts import bad_request
 from .. import model_gate
 
@@ -40,7 +45,7 @@ try:
     )
     from ...database.execution_history import subscribe_history_restore
     from ...database.library_commands import LibraryCommandError
-    from ...utils.media_capture import CAPTURE_EXTENSIONS, CaptureError, CaptureStore
+    from ...utils.media_capture import CaptureError, CaptureStore
 except ImportError:
     from database.annotations import (
         MAX_IMAGE_TAGS,
@@ -50,15 +55,13 @@ except ImportError:
     )
     from database.execution_history import subscribe_history_restore
     from database.library_commands import LibraryCommandError
-    from utils.media_capture import CAPTURE_EXTENSIONS, CaptureError, CaptureStore
+    from utils.media_capture import CaptureError, CaptureStore
 
 # Request bodies of the annotation routes are small (a target plus a tag set).
 MAX_BODY_BYTES = 64 * 1024
-MAX_TARGET_PATH = 1024
 CAPTURE_URL = "/prompt_manager/image-annotations/capture/"
 _PREVIEW_CHUNK = 64 * 1024
 
-_TARGET_FIELDS = frozenset({"root_index", "root_scope", "path"})
 _OBSERVE_FIELDS = frozenset({"target"})
 _SAVE_FIELDS = frozenset(
     {
@@ -188,37 +191,6 @@ def _capture_error(exc: CaptureError) -> web.Response:
     return _coded(exc.code, _MESSAGES.get(exc.code) or str(exc))
 
 
-def _target(data: object):
-    """``((index, scope, relative), None)`` for a target, else ``(None, error)``.
-
-    Only the listing identity is accepted: an int root index, the root's
-    64-hex scope and a bounded root-relative POSIX media path, never an
-    absolute, drive-qualified, backslash or ``..`` path. Nothing here touches
-    the filesystem or the database.
-    """
-    if not isinstance(data, dict) or set(data) != _TARGET_FIELDS:
-        return None, bad_request("target must name root_index, root_scope and path")
-    index, scope, relative = data["root_index"], data["root_scope"], data["path"]
-    if type(index) is not int or index < 0:
-        return None, bad_request("Invalid gallery root")
-    if not isinstance(scope, str) or _HEX64.fullmatch(scope) is None:
-        return None, bad_request("Invalid gallery root scope")
-    if not isinstance(relative, str) or not relative or len(relative) > MAX_TARGET_PATH:
-        return None, bad_request("path must be a relative media path")
-    parts = relative.split("/")
-    if (
-        "\0" in relative
-        or "\\" in relative
-        or relative.startswith("/")
-        or _has_traversal(relative)
-        or any(part in ("", ".", "..") or ":" in part for part in parts)
-    ):
-        return None, _forbidden()
-    if os.path.splitext(parts[-1])[1].lower() not in CAPTURE_EXTENSIONS:
-        return None, _forbidden("Only media files can be tagged")
-    return (index, scope, relative), None
-
-
 def _expires_at(seconds: float | None) -> str:
     moment = datetime.datetime.now(datetime.timezone.utc) + datetime.timedelta(
         seconds=max(0.0, seconds or 0.0)
@@ -623,7 +595,7 @@ class AnnotationRoutesMixin:
         it, including a legacy batch), never downloads (``model-unavailable``)
         and never writes.
         """
-        from ..autotag import MODELS, get_autotag_service
+        from ..autotag import MODELS, MissingBackendPackages, get_autotag_service
         from ..config import MAX_SUGGESTION_LIMIT, AutotagConfig
 
         data, error = await self._annotation_body(request, SUGGEST_FIELDS)
@@ -661,9 +633,10 @@ class AnnotationRoutesMixin:
                 return error
             service = get_autotag_service()
             status = await self._run_in_executor(service.get_models_status)
-            if not status.get(model_type, {}).get("downloaded"):
-                name = MODELS.get(model_type, {}).get("name", model_type)
-                return _coded("model-unavailable", unavailable_message(name))
+            name = MODELS.get(model_type, {}).get("name", model_type)
+            refusal = model_refusal(status, model_type, name)
+            if refusal is not None:
+                return _coded("model-unavailable", refusal)
             owner = model_gate.new_owner("image-annotations")
             if not model_gate.try_acquire(owner):
                 return model_busy_response()
@@ -682,6 +655,9 @@ class AnnotationRoutesMixin:
                     options,
                     on_skipped=functools.partial(store.release_use, token),
                 )
+            except MissingBackendPackages as exc:
+                # A package gone since the status read (load_model logged it).
+                return _coded("model-unavailable", str(exc))
             except Exception:
                 self.logger.exception("Tag suggestion failed")
                 return _error(

py/api/autotag_routes.py

@@ -23,6 +23,11 @@ from .prompts import thumbnail_url_for
 from . import thumbnail_settings
 from .. import model_gate
 
+try:
+    from ...utils.media_folders import in_trash_below_roots, is_skipped_folder
+except ImportError:
+    from utils.media_folders import in_trash_below_roots, is_skipped_folder
+
 from aiohttp import web
 
 _INTERNAL_ERROR = "An internal error occurred. Check server logs for details."
@@ -102,6 +107,17 @@ def size_label(size: str) -> str:
     return f"{match.group(1)} {match.group(2)}" if match else str(size or "")
 
 
+def package_entry(flags: dict) -> dict:
+    """The public package fields of one status entry (#424): the pip names
+    that cannot be imported, the install command and note (strings or null)."""
+    missing = flags.get("missing_packages") or []
+    text = {
+        key: flags[key] if isinstance(flags.get(key), str) else None
+        for key in ("install_command", "install_note")
+    }
+    return {"missing_packages": [str(name) for name in missing], **text}
+
+
 def public_models(status: dict, loaded_type: Optional[str]) -> dict:
     """Each engine model's public entry: names and sizes from ``MODELS``, the
     flags from ``status``; never a path (``model_path`` is dropped)."""
@@ -122,6 +138,7 @@ def public_models(status: dict, loaded_type: Optional[str]) -> dict:
         for key in ("model_exists", "mmproj_exists"):
             if key in flags:
                 entry[key] = bool(flags[key])
+        entry.update(package_entry(flags))
         models[model_type] = entry
     return models
 
@@ -750,6 +767,7 @@ class AutotagRoutesMixin:
                     "downloaded": bool(
                         (status.get(model_type) or {}).get("downloaded")
                     ),
+                    **package_entry(status.get(model_type) or {}),
                 },
                 "existing": existing,
                 "review_required": existing == "replace_after_review",
@@ -831,9 +849,12 @@ class AutotagRoutesMixin:
         """Return the real path when it is a media file inside an output directory."""
         if Path(str(raw_path)).suffix.lower() not in _MEDIA_EXTENSIONS:
             return None
-        for output_dir in self._get_all_output_dirs():
+        roots = list(self._get_all_output_dirs())
+        for output_dir in roots:
             if path_is_within(raw_path, output_dir):
                 real = os.path.realpath(raw_path)
+                if in_trash_below_roots(real, roots):
+                    return None  # thrown away, not an output (#543)
                 return real if os.path.isfile(real) else None
         return None
 
@@ -1073,8 +1094,8 @@ class AutotagRoutesMixin:
         return self.db.current_image_tags({locator: fingerprint}).get(locator, [])
 
     async def _suggest_single(self, target, model_type, options, base):
-        from ..autotag import MODELS, get_autotag_service
-        from .annotation_suggest import unavailable_message
+        from ..autotag import MODELS, MissingBackendPackages, get_autotag_service
+        from .annotation_suggest import model_refusal
         from .annotations import _pinned_suggestions, _settled, _submit
 
         try:
@@ -1084,8 +1105,8 @@ class AutotagRoutesMixin:
 
         service = get_autotag_service()
         status = await self._run_in_executor(service.get_models_status)
-        if not (status.get(model_type) or {}).get("downloaded"):
-            message = unavailable_message(MODELS[model_type]["name"])
+        message = model_refusal(status, model_type, MODELS[model_type]["name"])
+        if message is not None:
             return self._coded_error(409, "model-unavailable", message)
         owner = model_gate.new_owner("legacy-single")
         if not model_gate.try_acquire(owner):
@@ -1131,6 +1152,9 @@ class AutotagRoutesMixin:
                     options,
                     on_skipped=functools.partial(store.release_use, capture.token),
                 )
+            except MissingBackendPackages as exc:
+                # A package gone since the status read (load_model logged it).
+                return self._coded_error(409, "model-unavailable", str(exc))
             finally:
                 store.release(capture.token)
         finally:
@@ -1303,8 +1327,9 @@ class AutotagRoutesMixin:
     def _collect_scan_files(output_path: Path):
         """Media files under ``output_path`` from a bounded, symlink-free walk.
 
-        Descends at most ``_SCAN_MAX_DEPTH`` levels, skips ``thumbnails``
-        trees and symlinked files, and stops after ``_SCAN_MAX_FILES`` files.
+        Descends at most ``_SCAN_MAX_DEPTH`` levels, skips ``thumbnails`` and
+        trash folders (``utils.media_folders``) and symlinked files, and stops
+        after ``_SCAN_MAX_FILES`` files.
         Returns ``(paths, truncated)``.
         """
         found = []
@@ -1314,7 +1339,7 @@ class AutotagRoutesMixin:
             dirnames[:] = sorted(
                 name
                 for name in dirnames
-                if name != "thumbnails" and depth + 1 <= _SCAN_MAX_DEPTH
+                if not is_skipped_folder(name) and depth + 1 <= _SCAN_MAX_DEPTH
             )
             for name in sorted(filenames):
                 if Path(name).suffix.lower() not in _MEDIA_EXTENSIONS:
@@ -1341,6 +1366,10 @@ class AutotagRoutesMixin:
             files, truncated = await self._run_in_executor(
                 self._collect_scan_files, output_path
             )
+            # #501: a file removed from the library is not offered for tagging.
+            files = await self._run_in_executor(
+                self._without_removed, output_path, files
+            )
             has_thumbnails = (output_path / "thumbnails").is_dir()
 
             images = []

py/api/collections.py

@@ -0,0 +1,350 @@
+"""Collections (#331): named, hand-picked groups of images.
+
+Routes under ``/prompt_manager/collections``. A file is named by its listing
+identity ``{root_index, root_scope, path}`` (``media_target.py``) and stored
+under the favorites' keys (``_favorite_root_key``, ``_favorite_relative_key``),
+which never leave the server. A stale scope (the sources were reordered) is a
+409 ``source-changed`` before anything is written. Responses are
+``{"success": bool, ...}``; an unexpected failure is a logged 500 with a
+generic message, never the exception text.
+"""
+
+import hmac
+import re
+from functools import wraps
+from typing import Callable
+
+from aiohttp import web
+
+from .images import (
+    _favorite_relative_key,
+    _favorite_root_key,
+    _forbidden,
+    _json_body_or_error,
+    collection_not_found,
+)
+from .media_target import media_target
+from .prompts import bad_request
+
+try:
+    from ...database.image_collections import (
+        CollectionFilesMissing,
+        CollectionInvalid,
+        CollectionMissing,
+        CollectionNameTaken,
+        normalize_collection_name,
+    )
+    from ...database.image_favorites import MAX_KEY_LENGTH
+except ImportError:
+    from database.image_collections import (
+        CollectionFilesMissing,
+        CollectionInvalid,
+        CollectionMissing,
+        CollectionNameTaken,
+        normalize_collection_name,
+    )
+    from database.image_favorites import MAX_KEY_LENGTH
+
+BASE = "/prompt_manager/collections"
+# The most files one add or remove names (the bulk tagging cap, MC12).
+MAX_ITEMS = 500
+MAX_ID = 999_999_999
+_PATH_ID = re.compile(r"[1-9][0-9]{0,8}")
+_ROOT_INDEX = re.compile(r"[0-9]{1,9}")
+_ADD_TARGETS = (frozenset({"collection_id", "items"}), frozenset({"name", "items"}))
+_REMOVE_FIELDS = frozenset({"collection_id", "items"})
+_RENAME_FIELDS = frozenset({"name"})
+_MEDIA_MESSAGE = "Only media files can be added to a collection"
+READ_FAILED = "Collections could not be read."
+CHANGE_FAILED = "The collection could not be changed."
+SOURCES_CHANGED = "The sources changed. Refresh the images and try again."
+FILES_NOT_FOUND = (
+    "None of the selected images could be found. Refresh the images and try again."
+)
+NAME_TAKEN = "Another collection already has this name."
+
+
+class _Refused(Exception):
+    """A request refused before any write; carries its response."""
+
+    def __init__(self, response: web.Response):
+        super().__init__(response.status)
+        self.response = response
+
+
+def _coded(status: int, code: str, message: str, **extra) -> web.Response:
+    return web.json_response(
+        {"success": False, "code": code, "error": message, **extra},
+        status=status,
+        headers={"Cache-Control": "no-store"},
+    )
+
+
+def _collection_response(failure: str) -> Callable:
+    """Map the database's refusals to their status; anything else to a 500."""
+
+    def decorate(handler: Callable) -> Callable:
+        @wraps(handler)
+        async def wrapped(self, request: web.Request) -> web.Response:
+            try:
+                return await handler(self, request)
+            except _Refused as refused:
+                return refused.response
+            except CollectionInvalid as exc:
+                return bad_request(str(exc))
+            except CollectionMissing:
+                return collection_not_found()
+            except CollectionFilesMissing:
+                return _coded(404, "files-not-found", FILES_NOT_FOUND)
+            except CollectionNameTaken as exc:
+                return _coded(
+                    409, "name-taken", NAME_TAKEN, collection_id=exc.collection_id
+                )
+            except Exception:
+                self.logger.exception("Collection request failed")
+                return web.json_response(
+                    {"success": False, "error": failure}, status=500
+                )
+
+        return wrapped
+
+    return decorate
+
+
+def _path_id(request: web.Request) -> int:
+    raw = request.match_info["collection_id"]
+    if not raw.isascii() or _PATH_ID.fullmatch(raw) is None:
+        raise _Refused(bad_request("Invalid collection id"))
+    return int(raw)
+
+
+def _body_id(value: object) -> int:
+    if type(value) is not int or not 1 <= value <= MAX_ID:
+        raise _Refused(bad_request("Invalid collection id"))
+    return value
+
+
+async def _body(request: web.Request, allowed: tuple) -> dict:
+    data, error = await _json_body_or_error(request)
+    if error is not None:
+        raise _Refused(error)
+    if frozenset(data) not in allowed:
+        names = " or ".join(", ".join(sorted(fields)) for fields in allowed)
+        raise _Refused(bad_request(f"Request must contain exactly {names}"))
+    return data
+
+
+class CollectionRoutesMixin:
+    """Mixin providing the collection routes (#331)."""
+
+    def _register_collection_routes(self, routes: web.RouteTableDef) -> None:
+        # The fixed paths go first: "/items" must never match "/{collection_id}".
+        routes.get(BASE)(self.list_collections)
+        routes.post(BASE + "/items")(self.add_collection_items)
+        routes.delete(BASE + "/items")(self.remove_collection_items)
+        routes.get(BASE + "/membership")(self.collection_membership)
+        routes.patch(BASE + "/{collection_id}")(self.rename_collection)
+        routes.delete(BASE + "/{collection_id}")(self.delete_collection)
+
+    # -- reads -------------------------------------------------------------
+
+    @_collection_response(READ_FAILED)
+    async def list_collections(self, request: web.Request) -> web.Response:
+        """Every collection with its listed ``count`` and its ``missing`` rows.
+
+        ``count`` is the members listed under every configured source (one
+        primary-key range read per source, matched against its cached
+        listing); ``missing`` the stored rows beyond it. When a scan or a read
+        fails both are null for every collection and the names still return.
+        """
+        collections = await self._run_in_executor(self.db.list_collections)
+        counts = None
+        if collections:
+            try:
+                counts = await self._collection_counts()
+            except Exception:
+                self.logger.warning(
+                    "Collection counts could not be read", exc_info=True
+                )
+        rows = []
+        for collection in collections:
+            listed, stored = (None, None) if counts is None else counts
+            count = None if listed is None else listed.get(collection["id"], 0)
+            stored_rows = None if stored is None else stored.get(collection["id"], 0)
+            rows.append(
+                {
+                    **collection,
+                    "count": count,
+                    # Clamped: never below zero, whatever the snapshot saw.
+                    "missing": None if count is None else max(0, stored_rows - count),
+                }
+            )
+        return web.json_response({"success": True, "collections": rows})
+
+    async def _collection_counts(self) -> tuple[dict, dict]:
+        """``({id: listed members}, {id: stored rows})`` over every source.
+
+        The scans come from the gallery cache; the root keys (realpath), the
+        listings and one read snapshot of every member and stored count run
+        in the executor, so a write between two reads cannot skew them.
+        """
+        roots = list(self._get_all_output_dirs())
+        root_keys = await self._run_in_executor(
+            lambda: [_favorite_root_key(root) for root in roots]
+        )
+        distinct = {}  # one folder configured twice counts once
+        for root, root_key in zip(roots, root_keys):
+            distinct.setdefault(root_key, root)
+        scans = {
+            root_key: await self._get_gallery_files(root)
+            for root_key, root in distinct.items()
+        }
+        return await self._run_in_executor(self._count_members, distinct, scans)
+
+    def _count_members(self, roots: dict, scans: dict) -> tuple[dict, dict]:
+        """Blocking: match one snapshot's members against each listing."""
+        members, stored = self.db.collection_count_snapshot(list(roots))
+        listed: dict[int, int] = {}
+        for root_key, root in roots.items():
+            listing = self._favorite_listing(root, scans[root_key])
+            for collection_id, keys in members.get(root_key, {}).items():
+                found = sum(1 for key in keys if key in listing)
+                listed[collection_id] = listed.get(collection_id, 0) + found
+        return listed, stored
+
+    @_collection_response(READ_FAILED)
+    async def collection_membership(self, request: web.Request) -> web.Response:
+        """GET ``?root_index&root_scope&path``: the ids holding that file."""
+        query = request.query
+        if len(query) != 3 or set(query) != {"root_index", "root_scope", "path"}:
+            # len() counts a repeated key (?path=a&path=b) twice.
+            return bad_request("Query must name root_index, root_scope and path once")
+        raw_index = query["root_index"]
+        if not raw_index.isascii() or _ROOT_INDEX.fullmatch(raw_index) is None:
+            return bad_request("Invalid gallery root")
+        roots = list(self._get_all_output_dirs())
+        target = {
+            "root_index": int(raw_index),
+            "root_scope": query["root_scope"],
+            "path": query["path"],
+        }
+        root_key, key = await self._run_in_executor(
+            self._collection_key, target, roots, {}
+        )
+        ids = await self._run_in_executor(self.db.file_collections, root_key, key)
+        return web.json_response({"success": True, "collection_ids": ids})
+
+    # -- writes ------------------------------------------------------------
+
+    @_collection_response(CHANGE_FAILED)
+    async def add_collection_items(self, request: web.Request) -> web.Response:
+        """POST ``{collection_id | name, items}``: add the listed files.
+
+        Only files the source's listing holds are added; the rest count in
+        ``not_found``. A new name with nothing to add creates nothing (404
+        ``files-not-found``).
+        """
+        data = await _body(request, _ADD_TARGETS)
+        target = {}
+        if "name" in data:
+            target["name"] = normalize_collection_name(data["name"])
+        else:
+            target["collection_id"] = _body_id(data["collection_id"])
+        roots = list(self._get_all_output_dirs())
+        keys = await self._run_in_executor(self._collection_items, data["items"], roots)
+        found, not_found = [], 0
+        listings = {}
+        for index, root_key, key in keys:
+            if index not in listings:
+                root = roots[index]
+                files = await self._get_gallery_files(root)
+                listings[index] = await self._run_in_executor(
+                    self._favorite_listing, root, files
+                )
+            if key in listings[index]:
+                found.append((root_key, key))
+            else:
+                not_found += 1
+        result = await self._run_in_executor(
+            lambda: self.db.add_to_collection(items=found, **target)
+        )
+        return web.json_response({"success": True, **result, "not_found": not_found})
+
+    @_collection_response(CHANGE_FAILED)
+    async def remove_collection_items(self, request: web.Request) -> web.Response:
+        """DELETE ``{collection_id, items}``: listed or not, every named file."""
+        data = await _body(request, (_REMOVE_FIELDS,))
+        collection_id = _body_id(data["collection_id"])
+        roots = list(self._get_all_output_dirs())
+        keys = await self._run_in_executor(self._collection_items, data["items"], roots)
+        result = await self._run_in_executor(
+            self.db.remove_from_collection,
+            collection_id,
+            [(root_key, key) for _index, root_key, key in keys],
+        )
+        return web.json_response({"success": True, **result})
+
+    @_collection_response(CHANGE_FAILED)
+    async def rename_collection(self, request: web.Request) -> web.Response:
+        """PATCH ``{name}``: a case variant of its own name is allowed."""
+        collection_id = _path_id(request)
+        data = await _body(request, (_RENAME_FIELDS,))
+        name = normalize_collection_name(data["name"])
+        collection = await self._run_in_executor(
+            self.db.rename_collection, collection_id, name
+        )
+        return web.json_response({"success": True, "collection": collection})
+
+    @_collection_response(CHANGE_FAILED)
+    async def delete_collection(self, request: web.Request) -> web.Response:
+        """DELETE: the collection and its members; files are never touched."""
+        collection_id = _path_id(request)
+        await self._run_in_executor(self.db.delete_collection, collection_id)
+        return web.json_response({"success": True, "deleted": True})
+
+    # -- request steps -----------------------------------------------------
+
+    def _collection_items(self, items: object, roots: list) -> list[tuple]:
+        """``(index, root key, relative key)`` per distinct file, in order.
+
+        Blocking (realpath per root, once per request): run in the executor.
+        Every item is checked before anything is written: 400 for a malformed
+        shape, 403 for an unsafe path, 409 for a stale scope. Two spellings
+        that fold to one key (Windows) count once.
+        """
+        if not isinstance(items, list) or not 1 <= len(items) <= MAX_ITEMS:
+            raise _Refused(bad_request(f"items must list 1 to {MAX_ITEMS} images"))
+        keys, sources = {}, {}
+        for item in items:
+            index = item.get("root_index") if isinstance(item, dict) else None
+            root_key, key = self._collection_key(item, roots, sources)
+            keys.setdefault((root_key, key), index)
+        return [(index, root_key, key) for (root_key, key), index in keys.items()]
+
+    def _collection_key(
+        self, item: object, roots: list, sources: dict
+    ) -> tuple[str, str]:
+        """The stored keys of one target, or raise its refusal (blocking).
+
+        *sources* caches ``{index: (scope, root key)}`` for one request, so
+        each root's realpath runs once however many items name it.
+        """
+        target, error = media_target(item, media_message=_MEDIA_MESSAGE)
+        if error is not None:
+            raise _Refused(error)
+        index, scope, relative = target
+        if index >= len(roots):
+            raise _Refused(_coded(409, "source-changed", SOURCES_CHANGED))
+        if index not in sources:
+            sources[index] = (
+                self._gallery_root_scope(roots[index], index),
+                _favorite_root_key(roots[index]),
+            )
+        current, root_key = sources[index]
+        if not hmac.compare_digest(scope, current):
+            raise _Refused(_coded(409, "source-changed", SOURCES_CHANGED))
+        key = _favorite_relative_key(relative)
+        if max(len(root_key), len(key)) > MAX_KEY_LENGTH:
+            # A stored key past the schema bound would fail the next restore.
+            raise _Refused(_forbidden("Path is too long to add to a collection"))
+        return root_key, key

py/api/diagnostics_report.py

@@ -213,6 +213,8 @@ def public_config():
             "max_image_age_days": GalleryConfig.MAX_IMAGE_AGE_DAYS,
             "max_concurrent_processing": GalleryConfig.MAX_CONCURRENT_PROCESSING,
             "metadata_extraction_timeout": GalleryConfig.METADATA_EXTRACTION_TIMEOUT,
+            # config.json gallery.monitoring.save_foreign_runs (#247)
+            "save_foreign_runs": GalleryConfig.SAVE_FOREIGN_RUNS,
         },
         "integrations": {
             "lora_manager_enabled": bool(IntegrationConfig.LORA_MANAGER_ENABLED),

py/api/duplicate_files.py

@@ -588,7 +588,10 @@ class DuplicateFilesMixin:
         job.update(total=len(targets), status_line="Removing duplicate files")
         spellings = await self._run_in_executor(self._source_spellings)
         removed, failure, keepers = 0, None, {}
-        totals = dict.fromkeys(("moved", "merged", "favorites", "tags", "review"), 0)
+        totals = dict.fromkeys(
+            ("moved", "merged", "favorites", "tags", "review", "collections"), 0
+        )
+        totals["categories"] = 0  # image categories kept on the kept copies (#332)
         for done, target in enumerate(targets, start=1):
             if failure is not None:
                 self._record_target(job, "kept", target, NOT_ATTEMPTED)
@@ -631,10 +634,18 @@ class DuplicateFilesMixin:
             job.log_line(
                 f"Moved {_plural(totals['favorites'], 'favorite')} to the kept copies"
             )
+        if totals["collections"]:
+            job.log_line(
+                f"Moved {_plural(totals['collections'], 'collection membership')} "
+                "to the kept copies"
+            )
         if totals["tags"]:
             job.log_line(
                 f"Added {_plural(totals['tags'], 'image tag')} to the kept copies"
             )
+        if totals.get("categories"):
+            kept = _plural(totals["categories"], "image category", "image categories")
+            job.log_line(f"Kept {kept} on the kept copies")
         if totals["review"]:
             job.log_line(
                 f"Settled {_plural(totals['review'], 'Needs review item')} "

py/api/duplicate_review.py

@@ -16,6 +16,11 @@ from pathlib import Path
 from .admin import DELETABLE_MEDIA_EXTENSIONS
 from .maintenance import DUPLICATE_FILES
 
+try:
+    from ...utils.media_folders import in_trash_below_roots, is_trash_folder
+except ImportError:
+    from utils.media_folders import in_trash_below_roots, is_trash_folder
+
 # Keep entries one review takes; with paths of a few hundred characters the
 # list stays inside the preview body cap (DUPLICATE_PREVIEW_BODY_MAX, 1 MiB).
 MAX_KEEP = 2000
@@ -197,6 +202,8 @@ def file_problem(
     parts = Path(os.path.relpath(lexical, base)).parts
     if "thumbnails" in parts or ".." in parts:
         return OUTSIDE_SOURCE
+    if any(is_trash_folder(part) for part in parts[:-1]):
+        return OUTSIDE_SOURCE  # never removed from a trash folder (#543)
     if os.path.splitext(lexical)[1].lower() not in DELETABLE_MEDIA_EXTENSIONS:
         return OUTSIDE_SOURCE
     try:
@@ -212,6 +219,8 @@ def file_problem(
     try:
         if not _lexically_inside(_canonical_path(path), [_canonical_path(root)]):
             return OUTSIDE_SOURCE  # a linked folder on the way
+        if in_trash_below_roots(path, [root]):
+            return OUTSIDE_SOURCE  # a linked folder into a trash folder
         if keeper is not None:
             same = keeper_problem(path, root, info, keeper, keeper_root)
             if same:

py/api/duplicate_spellings.py

@@ -18,7 +18,7 @@ Blocking: each lookup stats the file's folders once (cached).
 import os
 from pathlib import Path
 
-from .images import _favorite_relative_key, _favorite_root_key
+from .images import _favorite_relative_key, _favorite_root_key, image_category_key
 
 
 def _identity(path):
@@ -78,6 +78,15 @@ class Spellings:
                 )
         return spelled
 
+    @property
+    def listed_roots(self):
+        """The listed roots (the output sources), in order."""
+        return [root for root, _identity in self._listed]
+
+    def category_key(self, path):
+        """*path*'s image category file key (#332), or None outside every source."""
+        return image_category_key(self.listed_roots, path)
+
     def favorites(self, path):
         """``{listed root: path below it (POSIX)}`` for each listed root holding it."""
         path = os.path.abspath(str(path))
@@ -95,7 +104,8 @@ def copy_move(target, kept_stat, spellings):
 
     A record found under a folder spelling moves to the kept copy under
     the same spelling when that folder holds it too, else to its real
-    path. Its favorite moves under every listed root holding the file.
+    path. Its favorite and its collection memberships move under every
+    listed root holding the file.
     """
     removed = spellings.of(target["abs"])
     kept = spellings.of(target["keeper_abs"])
@@ -125,9 +135,23 @@ def copy_move(target, kept_stat, spellings):
         "targets": targets,
         "kept_path": target["keeper_abs"],
         "favorites": favorites,
+        "categories": _category_pairs(target, spellings),
         "removed_locator": target["locator"],
         "kept_locator": target["keeper_locator"],
         "sha256": target["hash"],
         "kept_size": kept_stat.st_size,
         "kept_mtime_ns": kept_stat.st_mtime_ns,
     }
+
+
+def _category_pairs(target, spellings):
+    """``[(removed file key, kept file key)]`` for the image category (#332).
+
+    From the two absolute paths, not the favorites tuples: those follow the
+    listed root, which differs from the file key when sources nest.
+    """
+    removed = spellings.category_key(target["abs"])
+    kept = spellings.category_key(target["keeper_abs"])
+    if removed is None or kept is None:
+        return []
+    return [(removed, kept)]

py/api/history.py

@@ -5,6 +5,7 @@ import base64
 import binascii
 from functools import wraps
 import json
+import os
 import re
 import sqlite3
 from typing import Callable
@@ -26,7 +27,12 @@ from .history_current import (
     resolve_current_candidate,
     snapshot_current_output_scope,
 )
-from .inspection_service import CurrentFileChanged, inspect_current_file
+from .inspection_service import (
+    CurrentFileChanged,
+    image_tags_reader,
+    inspect_current_file,
+)
+from .images import image_category_key
 
 try:
     from ...database.execution_history import HistoryEpochChanged
@@ -39,7 +45,11 @@ try:
         WindowPosition,
     )
     from ...utils.history_read_fence import HistoryReadFence
-    from ...utils.inspection_response import encode_history_inspection_response
+    from ...utils.inspection_response import (
+        OWN_CATEGORY_UNREAD,
+        apply_own_category,
+        encode_history_inspection_response,
+    )
 except ImportError:
     from database.execution_history import HistoryEpochChanged
     from database.history_gallery import read_history_gallery
@@ -51,7 +61,11 @@ except ImportError:
         WindowPosition,
     )
     from utils.history_read_fence import HistoryReadFence
-    from utils.inspection_response import encode_history_inspection_response
+    from utils.inspection_response import (
+        OWN_CATEGORY_UNREAD,
+        apply_own_category,
+        encode_history_inspection_response,
+    )
 
 
 _RUN_MAX_BYTES = 8 * 1024 * 1024
@@ -677,6 +691,32 @@ class HistoryRoutesMixin:
     ) -> web.Response:
         return await self._history_current(request, "inspection")
 
+    def _history_own_category(self, reference: dict, scope):
+        """The recorded output's own category (#332), inside the snapshot.
+
+        The path is the symlink-resolved output folder plus the receipt's
+        subfolder and filename, keyed by ``image_category_key`` over the
+        configured output sources as Images keys it. A temp output or a path
+        no source holds has none. A failed read is OWN_CATEGORY_UNREAD.
+        """
+        if (
+            reference.get("folder_type") != "output"
+            or scope.canonical_output is None
+            or candidate_locator(reference, scope) is None
+        ):
+            return None
+        path = os.path.join(
+            str(scope.canonical_output), reference["subfolder"], reference["filename"]
+        )
+        try:
+            key = image_category_key(self._get_all_output_dirs(), path)
+            return None if key is None else self.db.image_category(*key)
+        except Exception:
+            self.logger.warning(
+                "History image category could not be read", exc_info=True
+            )
+            return OWN_CATEGORY_UNREAD
+
     async def _history_current(
         self, request: web.Request, kind: str
     ) -> web.StreamResponse:
@@ -701,6 +741,7 @@ class HistoryRoutesMixin:
                     if scope.current_scope != current_scope:
                         raise _current_stale()
                     result = db.get_history_occurrence(run_id, node, ordinal)
+                    own = None
                     if result is not None:
                         receipt = result["receipt"]
                         path = candidate_locator(receipt["reference"], scope)
@@ -708,6 +749,10 @@ class HistoryRoutesMixin:
                             db.model.get_connection(),
                             (path,) if path is not None else (),
                         )
+                        if kind == "inspection":
+                            own = self._history_own_category(
+                                receipt["reference"], scope
+                            )
             finally:
                 db.model.close()
             if result is None:
@@ -726,9 +771,24 @@ class HistoryRoutesMixin:
                         resolved.canonical_target,
                         source_label=resolved.public["source_label"],
                         saved=saved.get("saved"),
-                        library=saved.get(
-                            "library",
-                            {"status": "unavailable" if saved_unavailable else "none"},
+                        library=apply_own_category(
+                            saved.get(
+                                "library",
+                                {
+                                    "status": (
+                                        "unavailable" if saved_unavailable else "none"
+                                    )
+                                },
+                            ),
+                            own,
+                        ),
+                        # The file's own image tags, keyed as the Tag dialog
+                        # keys them: the normcased realpath (#457).
+                        image_tags=image_tags_reader(
+                            db,
+                            str(resolved.canonical_target),
+                            self.logger,
+                            close=True,
                         ),
                         recorded=recorded_output_lookup(
                             db, close=True, reference=receipt["reference"]

py/api/history_current.py

@@ -17,6 +17,7 @@ from aiohttp import web
 
 from . import thumbnail_settings
 from .images import _canonical, _public_path, SERVABLE_EXTENSIONS, VIDEO_EXTENSIONS
+from .images import in_trash_below_roots
 from .images import existing_media_thumbnail, media_thumbnail_rel
 
 try:
@@ -198,6 +199,9 @@ def resolve_current_candidate(
         if namespace is None or not namespace.is_dir():
             return _unavailable("root_unavailable")
         target = _canonical(lexical)
+        if in_trash_below_roots(target, [namespace]):
+            # Every kind and the outputs listing come through here (#543).
+            return _unavailable("missing")
         if not _authorized(target, namespace, scope):
             return _unavailable("not_authorized")
         if target.suffix.lower() not in SERVABLE_EXTENSIONS:
@@ -248,6 +252,10 @@ def _open_current_target(
     A *preview* (a file under ``thumbnails/``) may also be JPEG XL (#317)."""
     if _canonical(target) != target:
         raise CurrentLocationUnavailable("not_authorized", stale=True)
+    if in_trash_below_roots(target, [namespace]):
+        # Also at the open: the cover chooses its preview after the candidate
+        # check, and a preview can be a link into a trash folder (#543).
+        raise CurrentLocationUnavailable("missing")
     if not _authorized(target, namespace, scope):
         raise CurrentLocationUnavailable("not_authorized")
     suffix = target.suffix.lower()

py/api/image_categories.py

@@ -0,0 +1,376 @@
+"""Image category routes (#332): an image file's own category.
+
+``PUT /prompt_manager/images/category`` sets the own category of up to 500
+listed files; ``DELETE`` removes it (listed or not, so a missing file's
+category can still be removed); ``GET /prompt_manager/images/categories``
+lists the own-category values of files the sources list. Targets are the
+Images listing identity (``{root_index, root_scope, path}``, checked by
+``media_target``) of an output source; LoRA folders are not sources here.
+Instead of ``items`` a request may name ``filter``, the Images listing's own
+query ("Select all N matching", #392), resolved now up to 500 images.
+Each file is stored under its file key (``images.image_category_key``).
+These routes never read or write prompts, recipes or image links.
+"""
+
+import os
+from pathlib import Path
+
+from aiohttp import web
+
+from .image_tag_jobs import MAX_JOB_TARGETS, _parse_targets
+from .images import (
+    _favorite_relative_key,
+    _favorite_root_key,
+    _forbidden,
+    _json_body_or_error,
+    image_category_key,
+)
+from .prompts import bad_request
+
+try:
+    from ...database.image_categories import MAX_CATEGORY_LENGTH, MAX_KEY_LENGTH
+    from ...database.models import normalize_image_path
+    from ...utils.validators import validate_category
+except ImportError:
+    from database.image_categories import MAX_CATEGORY_LENGTH, MAX_KEY_LENGTH
+    from database.models import normalize_image_path
+    from utils.validators import validate_category
+
+CATEGORY_MEDIA_MESSAGE = "Only media files can have a category"
+_PUT_FIELDS = frozenset({"category"})
+_DELETE_FIELDS = frozenset()
+TOO_MANY = f"Select at most {MAX_JOB_TARGETS} images."
+SOURCE_CHANGED_MESSAGE = "The sources changed. Refresh the images and try again."
+WRITE_FAILED = "The category could not be changed."
+READ_FAILED = "Image categories could not be read."
+
+
+def _coded(status: int, code: str, message: str) -> web.Response:
+    return web.json_response(
+        {"success": False, "code": code, "error": message},
+        status=status,
+        headers={"Cache-Control": "no-store"},
+    )
+
+
+def _category_value(raw) -> tuple[str | None, web.Response | None]:
+    """The stripped category, or a 400 (an empty value is a 400: use DELETE)."""
+    if not isinstance(raw, str):
+        return None, bad_request("category must be a string")
+    value = raw.strip()
+    if not value:
+        return None, bad_request("category must not be empty")
+    if len(value) > MAX_CATEGORY_LENGTH:
+        return None, bad_request(
+            f"Category cannot exceed {MAX_CATEGORY_LENGTH} characters"
+        )
+    try:
+        value.encode("utf-8")
+        validate_category(value)
+    except UnicodeEncodeError:
+        return None, bad_request("category must be valid text")
+    except ValueError as exc:
+        return None, bad_request(str(exc))
+    return value, None
+
+
+class _KeyRefused(Exception):
+    """A target has no storable file key (outside every source, or too long)."""
+
+    def __init__(self, message: str = "Access denied"):
+        super().__init__(message)
+        self.message = message
+
+
+def _file_key(roots, root, relative) -> tuple[str, str]:
+    """The target's file key (blocking: resolves the sources)."""
+    key = image_category_key(roots, Path(root) / relative)
+    if key is None:
+        raise _KeyRefused()
+    if max(len(key[0]), len(key[1])) > MAX_KEY_LENGTH:
+        raise _KeyRefused("Path is too long")
+    return key
+
+
+def _nested_sources(root: Path, sources) -> list[tuple[str, str]]:
+    """``[(relative key prefix, source root key)]`` of sources inside *root*.
+
+    Deepest first, so the first prefix that matches is the file's source.
+    """
+    base = os.path.join(os.path.normcase(os.path.realpath(str(root))), "")
+    nested = []
+    for source in sources:
+        real = os.path.realpath(str(source))
+        if not os.path.normcase(real).startswith(base):
+            continue
+        relative = os.path.relpath(real, os.path.realpath(str(root)))
+        nested.append(
+            (
+                _favorite_relative_key(relative.replace(os.sep, "/")),
+                _favorite_root_key(source),
+            )
+        )
+    nested.sort(key=lambda item: item[0].count("/"), reverse=True)
+    return nested
+
+
+def _source_prefix(relative_key: str, nested) -> str | None:
+    """The prefix of the deepest nested source holding *relative_key*."""
+    for prefix, _source_key in nested:
+        if relative_key.startswith(prefix + "/"):
+            return prefix
+    return None
+
+
+class ImageCategoryRoutesMixin:
+    """Routes for images' own categories (#332)."""
+
+    def _register_image_category_routes(self, routes):
+        # Fixed paths beside DELETE /prompt_manager/images/{image_id}, as the
+        # favorite routes are. Registered after it, they still win: aiohttp
+        # (3.10+) looks fixed paths up before dynamic resources
+        # (test_delete_category_never_reaches_delete_image).
+        @routes.put("/prompt_manager/images/category")
+        async def set_image_category_route(request):
+            return await self.set_image_category(request)
+
+        @routes.delete("/prompt_manager/images/category")
+        async def clear_image_category_route(request):
+            return await self.clear_image_category(request)
+
+        @routes.get("/prompt_manager/images/categories")
+        async def list_image_categories_route(request):
+            return await self.list_image_categories(request)
+
+    # -- reading ---------------------------------------------------------------
+
+    def _own_category_map(self, sources, listings) -> dict:
+        """``{normalized listed path: own category}`` for the listed files (blocking).
+
+        One primary-key range read per source; each stored row is matched to
+        the listing of every selected root that holds its source, so the work
+        follows the stored rows, not the files. A file under a nested source
+        is keyed by the deepest one (``image_category_key``). A row whose file
+        is gone matches nothing. A failed read raises.
+        """
+        sources = list(sources)
+        rows = self.db.own_categories_of(_favorite_root_key(s) for s in sources)
+        if not rows:
+            return {}
+        by_source: dict[str, dict[str, str]] = {}
+        for (root_key, relative), category in rows.items():
+            by_source.setdefault(root_key, {})[relative] = category
+        found = {}
+        for _index, root, files in listings:
+            listing = self._favorite_listing(root, files)
+            root_key = _favorite_root_key(root)
+            # normalize_image_path(root / listed) without a call per file: the
+            # listed spellings are clean relative POSIX paths. Windows abspath
+            # also drops a component's trailing dots and spaces, so it keeps
+            # the call there.
+            base = os.path.join(normalize_image_path(str(root)), "")
+
+            def normalized(listed, base=base, root=root):
+                if os.name == "nt":
+                    return normalize_image_path(str(root / listed))
+                return base + os.path.normcase(listed.replace("/", os.sep))
+
+            nested = [
+                item for item in _nested_sources(root, sources) if item[1] != root_key
+            ]
+            for relative, category in by_source.get(root_key, {}).items():
+                listed = listing.get(relative)
+                if listed is not None and _source_prefix(relative, nested) is None:
+                    found[normalized(listed)] = category
+            for prefix, source_key in nested:
+                for relative, category in by_source.get(source_key, {}).items():
+                    full = f"{prefix}/{relative}"
+                    listed = listing.get(full)
+                    if listed is not None and _source_prefix(full, nested) == prefix:
+                        found[normalized(listed)] = category
+        return found
+
+    async def _source_listings(self, roots) -> list[tuple]:
+        return [
+            (index, root, await self._get_gallery_files(root))
+            for index, root in enumerate(roots)
+        ]
+
+    async def list_image_categories(self, request):
+        """GET: the own-category values of listed files, sorted."""
+        try:
+            roots = list(self._get_all_output_dirs())
+            listings = await self._source_listings(roots)
+            found = await self._run_in_executor(self._own_category_map, roots, listings)
+        except Exception:
+            self.logger.exception("Image categories read failed")
+            return _coded(500, "categories-failed", READ_FAILED)
+        return web.json_response(
+            {"success": True, "categories": sorted(set(found.values()))},
+            headers={"Cache-Control": "no-store"},
+        )
+
+    # -- writing ---------------------------------------------------------------
+
+    async def _filter_targets(self, raw):
+        """``(targets, None)`` for an Images listing filter, else ``(None, error)``.
+
+        "Select all N matching" (#392) sends the listing's own query; it is
+        resolved now, up to 500 images (a 400 ``too-many-images`` above).
+        """
+        from .images import ListingSourceChanged, parse_listing_filter
+
+        try:
+            selection = await self.resolve_listing_filter(
+                parse_listing_filter(raw), MAX_JOB_TARGETS
+            )
+        except ListingSourceChanged:
+            return None, _coded(409, "source-changed", SOURCE_CHANGED_MESSAGE)
+        except ValueError as exc:
+            return None, bad_request(str(exc))
+        if selection.truncated:
+            return None, _coded(400, "too-many-images", TOO_MANY)
+        return tuple(selection.targets), None
+
+    async def _category_request(self, request, fields: frozenset, data=None):
+        """``(data, targets, roots, None)`` or ``(None, None, None, error)``.
+
+        The images are ``items`` (1 to 500 targets) or ``filter`` (all images
+        an Images listing filter admits), besides *fields*. *data* is the body
+        when the caller has already read it (a body is read once).
+        """
+        if data is None:
+            data, error = await _json_body_or_error(request)
+            if error is not None:
+                return None, None, None, error
+        names = set(data) - fields
+        if set(data) & fields != fields or names not in ({"items"}, {"filter"}):
+            return (
+                None,
+                None,
+                None,
+                bad_request(
+                    "Request must contain "
+                    + ", ".join(sorted(fields))
+                    + (" and " if fields else "")
+                    + "either items or filter"
+                ),
+            )
+        if "filter" in data:
+            targets, error = await self._filter_targets(data["filter"])
+            if error is not None:
+                return None, None, None, error
+            return data, targets, list(self._get_all_output_dirs()), None
+        items = data["items"]
+        if not isinstance(items, list) or not 1 <= len(items) <= MAX_JOB_TARGETS:
+            return (
+                None,
+                None,
+                None,
+                bad_request(f"items must list 1 to {MAX_JOB_TARGETS} images"),
+            )
+        targets, error = _parse_targets(items, media_message=CATEGORY_MEDIA_MESSAGE)
+        if error is not None:
+            return None, None, None, error
+        try:
+            for _index, _scope, relative in targets:
+                relative.encode("utf-8")
+        except UnicodeEncodeError:
+            return None, None, None, bad_request("path must be valid text")
+        roots = list(self._get_all_output_dirs())
+        for index, scope in dict.fromkeys((t[0], t[1]) for t in targets):
+            if index >= len(roots):
+                return None, None, None, bad_request("Invalid gallery root")
+            error = self._gallery_scope_error(
+                {"root_scope": scope, "root": str(index)}, roots
+            )
+            if error is not None:
+                if error.status == 409:
+                    error = _coded(409, "source-changed", SOURCE_CHANGED_MESSAGE)
+                return None, None, None, error
+        return data, targets, roots, None
+
+    def _listed_file_keys(self, roots, targets, files) -> tuple[list, list]:
+        """``(listed keys, unlisted keys)`` of the targets (blocking).
+
+        A target counts as listed when its source's listing holds it; its key
+        then follows the listed spelling. Targets folding to one key count
+        once, and a key that is listed through any target is listed.
+        """
+        listings, listed, missing = {}, {}, {}
+        for index, _scope, relative in targets:
+            root = roots[index]
+            if index not in listings:
+                listings[index] = self._favorite_listing(root, files[index])
+            spelled = listings[index].get(_favorite_relative_key(relative))
+            key = _file_key(roots, root, spelled or relative)
+            (missing if spelled is None else listed)[key] = True
+        return list(listed), [key for key in missing if key not in listed]
+
+    async def set_image_category(self, request):
+        """PUT ``{items, category}``: set the own category of listed files."""
+        data, targets, roots, error = await self._category_request(request, _PUT_FIELDS)
+        if error is not None:
+            return error
+        category, error = _category_value(data["category"])
+        if error is not None:
+            return error
+        try:
+            files = {}
+            for index in dict.fromkeys(t[0] for t in targets):
+                files[index] = await self._get_gallery_files(roots[index])
+            listed_keys, missing_keys = await self._run_in_executor(
+                self._listed_file_keys, roots, targets, files
+            )
+        except _KeyRefused as refused:
+            return _forbidden(refused.message)
+        except Exception:
+            self.logger.exception("Image category update failed")
+            return _coded(500, "category-failed", WRITE_FAILED)
+        try:
+            if not listed_keys:
+                return _coded(
+                    404,
+                    "files-not-found",
+                    "None of the selected images could be found.",
+                )
+            counts = await self._run_in_executor(
+                self.db.set_image_categories, listed_keys, category
+            )
+        except Exception:
+            self.logger.exception("Image category update failed")
+            return _coded(500, "category-failed", WRITE_FAILED)
+        return web.json_response(
+            {
+                "success": True,
+                "category": category,
+                "updated": counts["updated"],
+                "unchanged": counts["unchanged"],
+                "not_found": len(missing_keys),
+            },
+            headers={"Cache-Control": "no-store"},
+        )
+
+    async def clear_image_category(self, request):
+        """DELETE ``{items}``: remove the own category, listed or not."""
+        _data, targets, roots, error = await self._category_request(
+            request, _DELETE_FIELDS
+        )
+        if error is not None:
+            return error
+        try:
+            keys = await self._run_in_executor(
+                lambda: list(
+                    dict.fromkeys(_file_key(roots, roots[i], r) for i, _s, r in targets)
+                )
+            )
+            cleared = await self._run_in_executor(self.db.clear_image_categories, keys)
+        except _KeyRefused as refused:
+            return _forbidden(refused.message)
+        except Exception:
+            self.logger.exception("Image category removal failed")
+            return _coded(500, "category-failed", WRITE_FAILED)
+        return web.json_response(
+            {"success": True, "cleared": cleared},
+            headers={"Cache-Control": "no-store"},
+        )

py/api/image_delete.py

@@ -0,0 +1,521 @@
+"""Delete selected images: remove them from the library, or trash them (#480).
+
+``POST /prompt_manager/images/delete/preview {items | filter}`` reviews the
+selection for both modes at once and answers a reviewed plan (the System ›
+Maintenance contract, ``py/api/maintenance.py``): the token, the counts of
+the records each file loses, the refused files with a coded reason (both
+modes, and the trash-only ones), the prompts that lose their last image and
+the safety backup. It writes nothing. ``items`` are Images listing identities
+(at most 500); ``filter`` is "Select all N matching". Each target is matched
+to its entry in the current listing (``not-listed`` otherwise), so every
+later step uses the walked spelling, never the request's text.
+
+``POST /prompt_manager/maintenance/apply {token, mode}`` runs the plan as the
+``image_delete`` job (admission ``records``, not cancellable): the sources
+are checked, the promised safety backup is taken, then each file is checked
+again (containment and fingerprint) and
+
+- ``mode="library"``: its records are deleted and its removal mark written
+  in one transaction; the file stays on disk, hidden;
+- ``mode="trash"``: it is moved to the trash first (``utils/trash.py``); a
+  refused move leaves the file and its records alone; after a move its
+  records are deleted.
+
+No path here unlinks a media file. A failed records write stops the job; the
+files after it are not attempted.
+"""
+
+import hashlib
+import json
+import os
+import stat as stat_module
+from pathlib import Path
+
+from .admin import DELETABLE_MEDIA_EXTENSIONS, _remove_thumbnail
+from .duplicate_review import (
+    CHANGED_CONTENT,
+    GONE,
+    LINK,
+    OUTSIDE_SOURCE,
+    UNREADABLE,
+    file_problem,
+)
+from .images import _favorite_relative_key, _favorite_root_key
+from .jobs import IMAGE_DELETE_GROUP_NAMES, IMAGE_DELETE_JOB_KIND, JobBusy
+from .job_routes import busy_response
+from .maintenance import MAINTENANCE_PREVIEW_LEASE, _fail_job, _failure, backup_note
+
+try:
+    from ...database import image_removal_schema
+    from ...database.image_removal import mark_hides
+    from ...database.annotation_schema import MAX_LOCATOR_LENGTH
+    from ...utils import trash
+    from ...utils.media_folders import is_trash_folder
+except ImportError:
+    from database import image_removal_schema
+    from database.image_removal import mark_hides
+    from database.annotation_schema import MAX_LOCATOR_LENGTH
+    from utils import trash
+    from utils.media_folders import is_trash_folder
+
+IMAGE_DELETE = "delete_images"
+MODES = ("library", "trash")
+TITLES = {
+    "library": "Delete images (remove from the library)",
+    "trash": "Delete images (move to the trash)",
+}
+MAX_DETAIL_ROWS = 50
+# The system moved the file but its place in a trash could not be shown (#499).
+TRASH_UNCONFIRMED = "trash-unconfirmed"
+RECORDS_FAILED_CODE = "records-failed"
+
+# Reason codes (design §4.4) and the sentence each shows.
+REASONS = {
+    "not-listed": "No longer listed in Images.",
+    "outside": "Outside the output folders.",
+    "link": "A link, not a file.",
+    "gone": "The file no longer exists.",
+    "unreadable": "The file can't be read.",
+    "thumbnail": "A generated preview, not an image.",
+    "not-media": "Not a media file.",
+    "trash-folder": "Inside a trash folder.",
+    "path-too-long": "The path is too long.",
+    "changed": "The file changed after the review.",
+    trash.NO_TRASH: "This drive has no trash.",
+    trash.NETWORK: "Network drives can't use the trash.",
+    trash.TRASH_IN_ROOT: "This drive's trash is inside an output folder.",
+    trash.LOCKED: "The file is open in another program. Close it and try again.",
+    trash.FAILED: "The file could not be moved to the trash.",
+    trash.NO_PERMISSION: (
+        "PromptManager isn't allowed to move this file (no permission, or it is "
+        "locked in Finder)."
+    ),
+    trash.CLOUD_SYNC: (
+        "Files in iCloud Drive or a cloud-synced folder can't be moved to the "
+        "trash here."
+    ),
+    TRASH_UNCONFIRMED: (
+        "Moved by macOS, but its place in the trash could not be confirmed."
+    ),
+    trash.WINDOWS_RECYCLE: (
+        "Moving files to the Recycle Bin isn't available on Windows: files larger "
+        "than the bin's capacity would be deleted permanently."
+    ),
+    "not-attempted": "Not attempted: the job stopped after an error.",
+}
+_PROBLEM_CODES = {
+    OUTSIDE_SOURCE: "outside",
+    LINK: "link",
+    GONE: "gone",
+    UNREADABLE: "unreadable",
+    CHANGED_CONTENT: "changed",
+}
+SOURCES_CHANGED = "The sources changed since the review; nothing was changed."
+RECORDS_FAILED = "The image records could not be removed; the job stopped."
+
+
+def lexical_problem(relative: str) -> str | None:
+    """The refusal code a root-relative POSIX path earns before any file access."""
+    parts = relative.split("/")
+    if "thumbnails" in parts[:-1]:
+        return "thumbnail"
+    if any(is_trash_folder(part) for part in parts[:-1]):
+        return "trash-folder"
+    if os.path.splitext(parts[-1])[1].lower() not in DELETABLE_MEDIA_EXTENSIONS:
+        return "not-media"
+    return None
+
+
+def file_check(path, root, relative, *, expected=None):
+    """``(code, lstat)``: why *path* may not be deleted, or ``(None, lstat)``.
+
+    Text first (inside the root, not a preview or trash folder, a media
+    file), then ``duplicate_review.file_problem``: a regular file, not a
+    link, whose resolved path is still inside the resolved root. With
+    *expected* (``{size, mtime_ns, inode}`` from the review) the file must
+    still be those bytes. Every handle is closed when this returns.
+    """
+    code = lexical_problem(relative)
+    if code:
+        return code, None
+    try:
+        info = os.lstat(path)
+    except FileNotFoundError:
+        return "gone", None
+    except OSError:
+        return "unreadable", None
+    if getattr(info, "st_file_attributes", 0) & getattr(
+        stat_module, "FILE_ATTRIBUTE_REPARSE_POINT", 0
+    ):
+        return "link", info
+    if expected is None:
+        problem = file_problem(path, root, None, info.st_size, hash_check=False)
+    else:
+        problem = file_problem(
+            path,
+            root,
+            None,
+            expected["size"],
+            hash_check=False,
+            mtime_ns=expected["mtime_ns"],
+            inode=expected["inode"],
+        )
+    if problem:
+        return _PROBLEM_CODES.get(problem, "outside"), info
+    if len(os.path.normcase(os.path.realpath(path))) > MAX_LOCATOR_LENGTH:
+        return "path-too-long", info
+    return None, info
+
+
+def _row(target, code):
+    return {
+        "path": target["rel"],
+        "root_label": target["root_label"],
+        "code": code,
+        "detail": REASONS[code],
+    }
+
+
+def _summary(rows):
+    counts = {}
+    for row in rows:
+        counts[row["code"]] = counts.get(row["code"], 0) + 1
+    return {"count": len(rows), "counts": counts, "rows": rows[:MAX_DETAIL_ROWS]}
+
+
+def _fingerprint(targets) -> str:
+    material = [
+        (t["root_index"], t["rel"], t["size"], t["mtime_ns"], t["inode"])
+        for t in targets
+    ]
+    return hashlib.sha256(json.dumps(material).encode("utf-8")).hexdigest()
+
+
+class ImageDeleteMixin:
+    """The Images Delete… review and its apply job (#480)."""
+
+    def _register_image_delete_routes(self, routes):
+        # A fixed path beside the dynamic /images/{image_id} routes: aiohttp
+        # (3.10+) looks fixed paths up first (see image_categories.py).
+        @routes.post("/prompt_manager/images/delete/preview")
+        async def preview_image_delete_route(request):
+            return await self.preview_image_delete(request)
+
+    # ── review ────────────────────────────────────────────────────────
+
+    async def preview_image_delete(self, request):
+        """Review the selection under the maintenance preview lease."""
+        try:
+            async with self._jobs.lease(MAINTENANCE_PREVIEW_LEASE):
+                return await self._preview_image_delete(request)
+        except JobBusy as busy:
+            return busy_response(busy)
+
+    async def _preview_image_delete(self, request):
+        _data, targets, roots, error = await self._category_request(
+            request, frozenset()
+        )
+        if error is not None:
+            return error
+        db = self.db
+        identity = self._database_identity(db)
+        try:
+            files = {}
+            for index in dict.fromkeys(t[0] for t in targets):
+                files[index] = await self._get_gallery_files(roots[index])
+            review = await self._run_in_executor(
+                self._review_image_delete, db, roots, targets, files
+            )
+        except Exception:
+            self.logger.exception("Image delete review failed")
+            return _failure("The review failed. Check server logs for details.", 500)
+        return await self._plan_response(
+            db,
+            identity,
+            IMAGE_DELETE,
+            _fingerprint(review["targets"]),
+            review["public"],
+            {"targets": review["targets"]},
+        )
+
+    def _review_image_delete(self, db, roots, targets, files):
+        """Every target checked now (blocking); ``{targets, public}``."""
+        listings, seen = {}, set()
+        acted, refused, trash_refused = [], [], []
+        spellings = self._source_spellings()
+        root_texts = [str(root) for root in roots]
+        for index, _scope, relative in targets:
+            root = roots[index]
+            if index not in listings:
+                listings[index] = self._favorite_listing(root, files[index])
+            spelled = listings[index].get(_favorite_relative_key(relative))
+            target = {
+                "root_index": index,
+                "root_scope": _scope,
+                "root": str(root),
+                "root_label": self._public_path(root),
+                "rel": spelled or relative,
+            }
+            if spelled is None:
+                refused.append(_row(target, "not-listed"))
+                continue
+            absolute = os.path.join(str(root), *spelled.split("/"))
+            code, info = file_check(absolute, str(root), spelled)
+            if code:
+                refused.append(_row(target, code))
+                continue
+            identity = (info.st_dev, info.st_ino)
+            if identity in seen:
+                continue  # one physical file named twice (nested roots, hardlinks)
+            seen.add(identity)
+            target.update(self._removal_of(absolute, info, spellings))
+            target["trash"] = trash.trash_available(absolute, root_texts)
+            if target["trash"]:
+                trash_refused.append(_row(target, target["trash"]))
+            acted.append(target)
+        counted = db.count_removal_records([t["removal"] for t in acted])
+        library_count = len(acted)
+        public = {
+            "operation": IMAGE_DELETE,
+            "scope": {"count": library_count, "label": "images"},
+            "library": {"count": library_count},
+            "trash": {"count": library_count - len(trash_refused)},
+            "protected": {"count": len(refused), "reasons": []},
+            "refused": _summary(refused),
+            "trash_refused": _summary(trash_refused),
+            "records": counted["records"],
+            "orphaned_prompts": counted["orphaned_prompts"],
+            "media": {"deletes_files": False, "label": "Chosen in the review"},
+            "details": [],
+        }
+        return {"targets": acted, "public": public}
+
+    @staticmethod
+    def _removal_of(absolute, info, spellings):
+        favorites = [
+            (_favorite_root_key(root), _favorite_relative_key(relative))
+            for root, relative in spellings.favorites(absolute).items()
+        ]
+        return {
+            "abs": absolute,
+            "size": info.st_size,
+            "mtime_ns": info.st_mtime_ns,
+            "inode": [info.st_dev, info.st_ino],
+            "removal": {
+                "spellings": list(spellings.of(absolute).values()),
+                "locator": os.path.normcase(os.path.realpath(absolute)),
+                "favorites": favorites,
+                "category": spellings.category_key(absolute),
+            },
+        }
+
+    # ── apply ─────────────────────────────────────────────────────────
+
+    def _start_image_delete(self, db, plan, mode, backup_on):
+        """Register the delete job for a reviewed plan (on the loop)."""
+        return self._jobs.start(
+            IMAGE_DELETE_JOB_KIND,
+            TITLES[mode],
+            admission="records",
+            cancellable=False,
+            scope={"operation": IMAGE_DELETE, "mode": mode},
+            groups=IMAGE_DELETE_GROUP_NAMES,
+            runner=lambda job: self._run_image_delete(job, db, plan, mode, backup_on),
+        )
+
+    async def _run_image_delete(self, job, db, plan, mode, backup_on):
+        targets = plan.payload["targets"]
+        unchanged = await self._run_in_executor(self._sources_unchanged, targets)
+        if not unchanged:
+            return _fail_job(job, "sources-changed", SOURCES_CHANGED)
+        ok, backup = await self._safety_backup_step(job, db, backup_on)
+        if not ok:
+            return
+        try:
+            await self._delete_images(job, db, targets, mode, backup)
+        finally:
+            if backup:
+                await self._prune_backup_pool(job, db)
+
+    async def _delete_images(self, job, db, targets, mode, backup):
+        job.update(total=len(targets), status_line=TITLES[mode])
+        roots = [str(root) for root in self._get_all_output_dirs()]
+        done_group = "trashed" if mode == "trash" else "removed"
+        changed, failed = 0, None
+        for done, target in enumerate(targets, start=1):
+            if failed:
+                self._record_delete(job, "not_changed", target, "not-attempted")
+                continue
+            group, code, label = await self._run_in_executor(
+                self._delete_one_image, db, target, mode, roots
+            )
+            if group == "errors":
+                failed = code or RECORDS_FAILED_CODE
+                text = REASONS[code] if code else RECORDS_FAILED
+                job.record(
+                    "errors",
+                    {
+                        "path": target["rel"],
+                        "root": target["root_label"],
+                        "root_index": target["root_index"],
+                        "root_scope": target["root_scope"],
+                        "detail": text,
+                    },
+                    f"! {target['root_label']}/{target['rel']} · {text}",
+                )
+            elif group == done_group:
+                changed += 1
+                detail = (
+                    f"Moved to the {label}" if label else "Removed from the library"
+                )
+                self._record_delete(job, group, target, None, detail)
+            else:
+                self._record_delete(job, group, target, code)
+            job.update(processed=done, progress=int(done / len(targets) * 100))
+        if changed:
+            self.invalidate_gallery_cache()
+        verb = "Moved" if mode == "trash" else "Removed"
+        where = "to the trash" if mode == "trash" else "from the library"
+        line = f"{verb} {changed:,} of {len(targets):,} images {where}"
+        job.log_line(line)
+        job.update(progress=100, status_line=f"{line} · {backup_note(backup)}")
+        if failed:
+            # "records-failed" names every stop at an errors row (the page's
+            # "Stopped after N of M" toast); the row says which error it was.
+            job.scope["failure"] = RECORDS_FAILED_CODE
+            job.publish({"type": "error", "code": failed, "message": line})
+            job.finish("failed")
+
+    @staticmethod
+    def _record_delete(job, group, target, code, detail=None):
+        text = detail or REASONS[code]
+        row = {
+            "path": target["rel"],
+            "root": target["root_label"],
+            "root_index": target["root_index"],
+            "root_scope": target["root_scope"],
+            "code": code,
+            "detail": text,
+        }
+        mark = {"removed": "-", "trashed": "-"}.get(group, "=")
+        job.record(
+            group, row, f"{mark} {target['root_label']}/{target['rel']} · {text}"
+        )
+
+    def _delete_one_image(self, db, target, mode, roots):
+        """``(group, code, trash label)`` for one reviewed file (blocking)."""
+        code, _info = file_check(
+            target["abs"],
+            target["root"],
+            target["rel"],
+            expected={
+                "size": target["size"],
+                "mtime_ns": target["mtime_ns"],
+                "inode": target["inode"],
+            },
+        )
+        if code:
+            return "not_changed", code, None
+        label = None
+        if mode == "trash":
+            try:
+                label = trash.move_to_trash(target["abs"], roots)
+            except trash.TrashRefused as refused:
+                code = refused.code if refused.code in REASONS else trash.FAILED
+                self.logger.info(
+                    "Not moved to the trash (%s): %s %s",
+                    code,
+                    target["rel"],
+                    refused.detail,
+                )
+                return "not_changed", code, None
+            except trash.TrashUnconfirmed as unconfirmed:
+                # The file left its folder: keep its records, stop the job.
+                self.logger.warning(
+                    "Trash move not confirmed: %s %s", target["rel"], unconfirmed.detail
+                )
+                return "errors", TRASH_UNCONFIRMED, None
+            mark = None
+        else:
+            mark = (target["size"], target["mtime_ns"])
+        try:
+            db.remove_image_records(target["removal"], mark=mark)
+        except Exception:
+            self.logger.exception("Removing an image's records failed")
+            return "errors", None, label
+        _remove_thumbnail(Path(target["root"]), Path(target["rel"]), self.logger)
+        return ("trashed" if mode == "trash" else "removed"), None, label
+
+    # ── the workspace listing ─────────────────────────────────────────
+
+    def _removal_marks(self) -> dict:
+        """The removal marks, cached until a mark changes or the database does.
+
+        A listing page reads no table while nothing changed: the cache follows
+        this process's marks generation and the database identity (a restore).
+        """
+        key = (self._database_identity(self.db), image_removal_schema.generation())
+        cached = getattr(self, "_marks_cache", None)
+        if cached is None or cached[0] != key:
+            cached = (key, self.db.removal_marks())
+            self._marks_cache = cached
+        return cached[1]
+
+    def _hidden_entries(self, listings) -> set:
+        """Normalized paths of listed files a removal mark hides (blocking).
+
+        Only marked locators are looked at, and only those files are
+        ``lstat``'ed: a mark hides a file while its size and ``mtime_ns`` are
+        still the ones it was removed with.
+        """
+        marks = self._removal_marks()
+        if not marks:
+            return set()
+        located = self._workspace_locators(listings)
+        return {
+            entry.normalized
+            for locator, entry in ((locator, located.get(locator)) for locator in marks)
+            if entry is not None and mark_hides(marks, locator, entry.path)
+        }
+
+    def _removed_paths(self, paths) -> set:
+        """The absolute paths among *paths* a removal mark hides (blocking)."""
+        marks = self._removal_marks()
+        if not marks:
+            return set()
+        return {
+            str(path)
+            for path in paths
+            if mark_hides(marks, os.path.normcase(os.path.realpath(str(path))), path)
+        }
+
+    def _removal_check_under(self, root):
+        """``hidden(path) -> bool`` for files a walk of *root* found (blocking).
+
+        A walk never follows a link below *root*, so a file's locator is
+        ``normcase(join(realpath(root), relative))``: no ``realpath`` per
+        file, and an ``lstat`` only for a marked one. Without marks it
+        answers False at once.
+        """
+        marks = self._removal_marks()
+        if not marks:
+            return lambda _path: False
+        root = os.fspath(root)
+        real = os.path.realpath(root)
+
+        def hidden(path):
+            relative = os.path.relpath(os.fspath(path), root)
+            locator = os.path.normcase(os.path.join(real, relative))
+            return mark_hides(marks, locator, path)
+
+        return hidden
+
+    def _without_removed(self, root, paths) -> list:
+        """*paths* found by a walk of *root*, less the hidden ones (blocking)."""
+        removed = self._removal_check_under(root)
+        return [path for path in paths if not removed(path)]
+
+
+def parse_mode(value):
+    """The apply's ``mode``, or None when it is not one of MODES."""
+    return value if isinstance(value, str) and value in MODES else None

py/api/image_return.py

@@ -0,0 +1,148 @@
+"""Return removed images to the library (#498).
+
+``POST /prompt_manager/images/removed/return {items | filter}`` names files a
+removal mark hides (#480, "Remove from the library only"): ``items`` are 1 to
+500 listing identities, ``filter`` the removed view's listing query
+(``removed: "1"`` plus the view's other parameters, at most 500 images). Only
+this route takes ``removed``: every other bulk route refuses it, because an
+explicit write there would show a file again without re-reading it.
+
+The route answers 202 ``{job, returned, not_removed}`` after starting a
+``scan`` job titled "Return images to the library" (admission ``records``:
+409 ``busy`` beside a scan, restore or delete, nothing changed). The job
+first deletes the marks that still hide their file (same size and
+``mtime_ns``), in one transaction, then scans exactly those files with the
+scan's own pipeline: prompts, links, pairs and Needs review items come back
+from the files' embedded metadata. Image tags, auto-tag marks, the own
+category, collection memberships and the favorite were deleted by the remove
+and do not come back. No file is moved, written or deleted.
+"""
+
+import os
+from pathlib import Path
+
+from aiohttp import web
+
+from .image_categories import TOO_MANY, _coded
+from .images import (
+    ListingSourceChanged,
+    _favorite_relative_key,
+    _json_body_or_error,
+    parse_listing_filter,
+)
+from .image_tag_jobs import MAX_JOB_TARGETS
+from .jobs import JobBusy
+from .job_routes import busy_response
+
+try:
+    from ...database.image_removal import mark_hides
+except ImportError:
+    from database.image_removal import mark_hides
+
+NONE_REMOVED = "None of the selected images are removed from the library."
+SOURCE_CHANGED = "The image sources changed. Reload Images and try again."
+
+
+def _bad(message):
+    return web.json_response({"success": False, "error": message}, status=400)
+
+
+class ImageReturnMixin:
+    """Return to library (#498): clear the marks, then scan those files."""
+
+    def _register_image_return_routes(self, routes):
+        # A fixed path beside the dynamic /images/{image_id} routes.
+        @routes.post("/prompt_manager/images/removed/return")
+        async def return_removed_images_route(request):
+            return await self.return_removed_images(request)
+
+    async def return_removed_images(self, request):
+        data, error = await _json_body_or_error(request)
+        if error is not None:
+            return error
+        if set(data) == {"filter"}:
+            targets, roots, error = await self._removed_filter_targets(data["filter"])
+        else:
+            _data, targets, roots, error = await self._category_request(
+                request, frozenset(), data=data
+            )
+        if error is not None:
+            return error
+        files = {}
+        for index in dict.fromkeys(t[0] for t in targets):
+            files[index] = await self._get_gallery_files(roots[index])
+        returned, not_removed = await self._run_in_executor(
+            self._hidden_targets, roots, targets, files
+        )
+        if not returned:
+            return _coded(400, "no-images", NONE_REMOVED)
+        try:
+            job = self._start_scan_job(
+                files="all", output_dirs=list(roots), returned=returned
+            )
+        except JobBusy as busy:
+            return busy_response(busy)
+        return web.json_response(
+            {
+                "success": True,
+                "job": job.summary(),
+                "returned": len(returned),
+                "not_removed": not_removed,
+            },
+            status=202,
+        )
+
+    async def _removed_filter_targets(self, raw):
+        """``(targets, roots, None)`` for the removed view's filter, else an error."""
+        if not isinstance(raw, dict) or raw.get("removed") != "1":
+            return None, None, _bad('filter must hold removed: "1"')
+        rest = {key: value for key, value in raw.items() if key != "removed"}
+        try:
+            parse_listing_filter(rest)
+            selection = await self.resolve_listing_filter(
+                {**rest, "removed": "1"}, MAX_JOB_TARGETS
+            )
+        except ListingSourceChanged:
+            return None, None, _coded(409, "source-changed", SOURCE_CHANGED)
+        except ValueError as exc:
+            return None, None, _bad(str(exc))
+        if selection.truncated:
+            return None, None, _coded(400, "too-many-images", TOO_MANY)
+        if not selection.targets:
+            return None, None, _coded(400, "no-images", NONE_REMOVED)
+        return tuple(selection.targets), list(self._get_all_output_dirs()), None
+
+    def _hidden_targets(self, roots, targets, files):
+        """``([(path, locator)], not_removed)``: the targets a mark hides now.
+
+        Each target is matched to its listed spelling (the walk's). One
+        physical file named twice (nested roots) is returned once; a target
+        that is not listed or not hidden counts in ``not_removed``.
+        """
+        marks = self._removal_marks()
+        listings, seen, returned, not_removed = {}, set(), [], 0
+        for index, _scope, relative in targets:
+            root = roots[index]
+            if index not in listings:
+                listings[index] = self._favorite_listing(root, files[index])
+            spelled = listings[index].get(_favorite_relative_key(relative))
+            if spelled is None:
+                not_removed += 1
+                continue
+            path = os.path.join(str(root), *spelled.split("/"))
+            locator = os.path.normcase(os.path.realpath(path))
+            if locator in seen:
+                continue
+            if not mark_hides(marks, locator, path):
+                not_removed += 1
+                continue
+            seen.add(locator)
+            returned.append((Path(path), locator))
+        return returned, not_removed
+
+    def _clear_returned_marks(self, returned) -> list:
+        """The paths whose marks this deleted (blocking; one transaction)."""
+        cleared = self.db.clear_hiding_marks(
+            [(locator, str(path)) for path, locator in returned]
+        )
+        return [path for path, locator in returned if locator in cleared]

py/api/image_tag_jobs.py

@@ -42,7 +42,7 @@ from .. import model_gate
 from .admin import _plural, _time_left
 from .annotation_suggest import (
     OptionError,
-    unavailable_message,
+    model_refusal,
     validate_options,
 )
 from .annotations import (
@@ -58,7 +58,9 @@ from .annotations import (
 from .autotag_routes import BATCH_CANCELLED, MODEL_BUSY_ERROR, model_busy_response
 from .images import (
     MAX_LISTING_SELECTION,
+    CollectionMissing,
     ListingSourceChanged,
+    collection_not_found,
     _current_fingerprint,
     _listing_posix,
     _public_path,
@@ -193,13 +195,17 @@ class _Spec:
         return scope
 
 
-def _parse_targets(raw):
-    """Unique validated targets in request order, or ``(None, error)``."""
+def _parse_targets(raw, **target_options):
+    """Unique validated targets in request order, or ``(None, error)``.
+
+    ``target_options`` reach the target check (the image category routes
+    pass their own ``media_message``, #332).
+    """
     if not isinstance(raw, list) or not 1 <= len(raw) <= MAX_JOB_TARGETS:
         return None, bad_request(f"targets must list 1 to {MAX_JOB_TARGETS} images")
     seen, targets = set(), []
     for item in raw:
-        target, error = _target(item)
+        target, error = _target(item, **target_options)
         if error is not None:
             return None, error
         if target not in seen:
@@ -482,7 +488,11 @@ class ImageTagJobsMixin:
                     _still_targets, self, index, root, files, seen
                 )
             )
-        return found
+        # #480: a file removed from the library is never tagged by a batch.
+        hidden = await self._run_in_executor(
+            self._removed_paths, [target.path for target in found]
+        )
+        return [target for target in found if target.path not in hidden]
 
     async def _start_autotag(
         self, *, model_type, existing, options, keep_in_memory, title, owner_kind
@@ -506,10 +516,8 @@ class ImageTagJobsMixin:
             )
         )
         label = MODELS[model_type]["label"]
-        if not (status.get(model_type) or {}).get("downloaded"):
-            message = (
-                f"{label} is not downloaded. Download it in System › Auto-tagging."
-            )
+        message = model_refusal(status, model_type, label)
+        if message is not None:
             return None, _refusal(409, "model-unavailable", message)
         if backup_on and short is not None:
             return None, _refusal(507, "insufficient-space", short_space_message(short))
@@ -685,6 +693,8 @@ class ImageTagJobsMixin:
             selection = await self.resolve_listing_filter(spec.filter, cap)
         except ListingSourceChanged:
             return None, _coded("source-changed")
+        except CollectionMissing:
+            return None, collection_not_found()
         except ValueError as exc:
             return None, bad_request(str(exc))
         except Exception:
@@ -784,13 +794,13 @@ class ImageTagJobsMixin:
 
     async def _prepare_tagging_model(self, job, spec: _Spec, owner):
         """The loaded service, or None (logged) when the job cannot run."""
-        from ..autotag import MODELS, get_autotag_service
+        from ..autotag import MODELS, MissingBackendPackages, get_autotag_service
 
         service = get_autotag_service()
         status = await self._run_in_executor(service.get_models_status)
-        if not status.get(spec.model_type, {}).get("downloaded"):
-            name = MODELS.get(spec.model_type, {}).get("name", spec.model_type)
-            message = unavailable_message(name)
+        name = MODELS.get(spec.model_type, {}).get("name", spec.model_type)
+        message = model_refusal(status, spec.model_type, name)
+        if message is not None:
             job.update(status_line=message)
             job.log_line(f"! {message}")
             return None
@@ -802,6 +812,11 @@ class ImageTagJobsMixin:
                 spec.model_type,
                 spec.options["use_gpu"],
             )
+        except MissingBackendPackages as exc:
+            # A package gone since the status read (load_model logged it).
+            job.update(status_line=str(exc))
+            job.log_line(f"! {exc}")
+            return None
         except Exception:
             self.logger.exception("The auto-tag job could not load its model")
             job.update(status_line=INFERENCE_FAILED)

py/api/images.py

@@ -13,12 +13,13 @@ import re
 import stat
 import subprocess  # nosec B404 - ffmpeg frames through run_encoder, fixed argv
 import sys
+import threading
 import time as _time
 import urllib.parse
 from bisect import bisect_left, bisect_right, insort
 from collections.abc import Mapping
 from pathlib import Path
-from typing import Callable, NamedTuple
+from typing import Callable, Iterable, NamedTuple
 
 from aiohttp import web
 from PIL import Image, UnidentifiedImageError
@@ -54,18 +55,28 @@ from .inspection_service import (
     IMAGE_EXTENSIONS as _IMAGE_EXTENSIONS,
     SERVABLE_EXTENSIONS,
     VIDEO_EXTENSIONS,
+    image_tags_reader,
     inspect_current_file,
 )
 
 try:
+    from ...database.image_collections import CollectionMissing
     from ...database.image_favorites import MAX_KEY_LENGTH
     from ...database.library import display_title
     from ...database.models import normalize_image_path
     from ...database.run_attribution import recorded_output_lookup
     from ...utils.card_seed import card_seed, header_params, parsed_positive
+    from ...utils.media_folders import (
+        in_skipped_folder,
+        in_trash_below_roots,
+        in_trash_folder,
+        is_skipped_folder,
+    )
     from ...utils.parallel import map_parallel
     from ...utils.json_strict import dumps_strict
     from ...utils.inspection_response import (
+        OWN_CATEGORY_UNREAD,
+        apply_own_category,
         encode_inspection_response,
         library_metadata,
     )
@@ -74,19 +85,29 @@ try:
         OpenerUnavailable,
         RevealGate,
         RevealTargetChanged,
-        is_local_request,
+        is_same_origin_request,
         reveal_executor,
         reveal_in_file_manager,
     )
+    from ...utils.workspace_keys import gallery_root_scope, workspace_keys_for
 except ImportError:
+    from database.image_collections import CollectionMissing
     from database.image_favorites import MAX_KEY_LENGTH
     from database.library import display_title
     from database.models import normalize_image_path
     from database.run_attribution import recorded_output_lookup
     from utils.card_seed import card_seed, header_params, parsed_positive
+    from utils.media_folders import (
+        in_skipped_folder,
+        in_trash_below_roots,
+        in_trash_folder,
+        is_skipped_folder,
+    )
     from utils.parallel import map_parallel
     from utils.json_strict import dumps_strict
     from utils.inspection_response import (
+        OWN_CATEGORY_UNREAD,
+        apply_own_category,
         encode_inspection_response,
         library_metadata,
     )
@@ -95,10 +116,11 @@ except ImportError:
         OpenerUnavailable,
         RevealGate,
         RevealTargetChanged,
-        is_local_request,
+        is_same_origin_request,
         reveal_executor,
         reveal_in_file_manager,
     )
+    from utils.workspace_keys import gallery_root_scope, workspace_keys_for
 
 
 IMAGE_EXTENSIONS = _IMAGE_EXTENSIONS
@@ -106,6 +128,21 @@ IMAGE_EXTENSIONS = _IMAGE_EXTENSIONS
 _CARD_RECORDS = ("prompt", "workflow")
 _PNG_SIGNATURE = b"\x89PNG\r\n\x1a\n"
 _LISTING_FAILED = "The image list could not be filtered. Check server logs for details."
+_COLLECTION_ID = re.compile(r"[1-9][0-9]{0,8}")
+COLLECTION_NOT_FOUND = "That collection no longer exists."
+
+
+def collection_not_found() -> web.Response:
+    """The 404 a write or a listing answers for an unknown collection (#331)."""
+    return web.json_response(
+        {
+            "success": False,
+            "code": "collection-not-found",
+            "error": COLLECTION_NOT_FOUND,
+        },
+        status=404,
+        headers={"Cache-Control": "no-store"},
+    )
 
 
 def _card_header(path: Path) -> tuple:
@@ -250,10 +287,20 @@ def _forbidden(message="Access denied"):
     return web.json_response({"success": False, "error": message}, status=403)
 
 
-def _media_access_error(path, allowed_dirs):
-    """Return a 403 response when *path* must not be served, else None.
+def _file_not_found():
+    return web.json_response(
+        {"success": False, "error": "Image file not found"},
+        status=404,
+        headers={"Cache-Control": "no-store"},
+    )
 
-    Fails closed: an empty *allowed_dirs* denies everything.
+
+def _media_access_error(path, allowed_dirs):
+    """The response refusing *path*, or None when it may be read.
+
+    Fails closed: an empty *allowed_dirs* denies everything (403). A file in a
+    trash folder below its root is thrown away, not an output: a 404, as if it
+    were not there (#543), also through a link or another spelling.
     """
     if Path(path).suffix.lower() not in SERVABLE_EXTENSIONS:
         return _forbidden("Only media files can be served")
@@ -261,6 +308,8 @@ def _media_access_error(path, allowed_dirs):
         return _forbidden("No allowed image directories configured")
     if not any(_is_within(path, root) for root in allowed_dirs):
         return _forbidden()
+    if in_trash_below_roots(path, allowed_dirs):
+        return _file_not_found()
     return None
 
 
@@ -497,7 +546,8 @@ MAX_JSON_BODY_BYTES = 1024 * 1024
 _READ_CHUNK = 64 * 1024
 
 
-_WORKSPACE_CURSOR_SECRET = os.urandom(32)
+# Guards the first load of an API's workspace keys (#430, _workspace_keys).
+_WORKSPACE_KEYS_LOCK = threading.Lock()
 
 
 def _workspace_root(query: dict, roots: list[Path]) -> int | None:
@@ -565,7 +615,8 @@ class _ImageTagMatch(NamedTuple):
 
     tags: bool  # every filter tag is in its image tags or linked positive tags
     query: bool  # ``q`` is a case-folded substring of one image tag name
-    link: tuple | None  # (hit, rating, positive id) of its unambiguous link
+    # (hit, rating, positive id, inherited category) of its unambiguous link
+    link: tuple | None
 
 
 def _current_fingerprint(path: Path) -> tuple[int, int] | None:
@@ -596,15 +647,37 @@ def _rated_key(entry: _Listed, rank: int) -> tuple:
     return (-rank, *_workspace_key(entry, "rating"))
 
 
-def _workspace_cursor(key: tuple, scope: str) -> str:
+# Bump whenever the cursor's key tuple changes shape: a cursor now outlives a
+# restart and an upgrade (#430), so an old shape must be refused, not parsed.
+_CURSOR_VERSION = 2
+_CURSOR_STALE = "The image collection changed; refresh the gallery"
+
+
+class CursorStale(ValueError):
+    """A well-formed cursor this listing cannot verify (#430).
+
+    Another key, another root list or other filters: the page refreshes its
+    collection instead of retrying the same cursor.
+    """
+
+
+def _cursor_mac(secret: bytes, scope: str, payload: bytes) -> bytes:
+    # The listing scope (it hashes every absolute root) is bound in the MAC
+    # only, never sent: the scope is 64 hex, so the "\n" join is unambiguous.
+    return hmac.new(secret, scope.encode() + b"\n" + payload, hashlib.sha256).digest()
+
+
+def _workspace_cursor(key: tuple, scope: str, secret: bytes) -> str:
+    """The signed keyset cursor of *key*; *secret* is the API's cursor key."""
     payload = json.dumps(
-        {"v": 1, "scope": scope, "key": key}, separators=(",", ":"), ensure_ascii=False
+        {"v": _CURSOR_VERSION, "key": key}, separators=(",", ":"), ensure_ascii=False
     ).encode()
-    signature = hmac.new(_WORKSPACE_CURSOR_SECRET, payload, hashlib.sha256).digest()
+    signature = _cursor_mac(secret, scope, payload)
     return base64.urlsafe_b64encode(signature + payload).decode().rstrip("=")
 
 
-def _workspace_cursor_key(token: str, scope: str, order: str) -> tuple:
+def _workspace_cursor_key(token: str, scope: str, order: str, secret: bytes) -> tuple:
+    """The keyset key of *token*; CursorStale when it is not this listing's."""
     try:
         if len(token) > 4096:
             raise ValueError()
@@ -612,13 +685,14 @@ def _workspace_cursor_key(token: str, scope: str, order: str) -> tuple:
             token + "=" * (-len(token) % 4), altchars=b"-_", validate=True
         )
         signature, payload = raw[:32], raw[32:]
-        expected = hmac.new(_WORKSPACE_CURSOR_SECRET, payload, hashlib.sha256).digest()
-        if not hmac.compare_digest(signature, expected):
+        if len(signature) != 32 or not payload:
             raise ValueError()
+        if not hmac.compare_digest(signature, _cursor_mac(secret, scope, payload)):
+            raise CursorStale(_CURSOR_STALE)
         data = json.loads(payload)
         key = data["key"]
-        if data["v"] != 1 or data["scope"] != scope or not isinstance(key, list):
-            raise ValueError()
+        if data["v"] != _CURSOR_VERSION or not isinstance(key, list):
+            raise CursorStale(_CURSOR_STALE)
         types = (
             (str, str, int, (float, int))
             if order in ("name", "name-desc")
@@ -632,6 +706,8 @@ def _workspace_cursor_key(token: str, scope: str, order: str) -> tuple:
         ):
             raise ValueError()
         return tuple(key)
+    except CursorStale:
+        raise
     except (ValueError, KeyError, TypeError, UnicodeError, binascii.Error):
         raise ValueError("Invalid gallery cursor; refresh the gallery") from None
 
@@ -741,12 +817,12 @@ def _reveal_not_found():
     )
 
 
-def _not_local():
+def _not_same_origin():
     return web.json_response(
         {
             "success": False,
-            "code": "not-local",
-            "error": "Show in folder works only on the computer running ComfyUI.",
+            "code": "not-same-origin",
+            "error": "This page's address does not match the server's.",
         },
         status=403,
     )
@@ -802,6 +878,53 @@ def _favorite_root_key(root) -> str:
     return _favorite_relative_key(os.path.realpath(str(root)))
 
 
+def _source_depth(source: str) -> int:
+    return len([part for part in re.split(r"[\\/]+", source) if part])
+
+
+def deepest_source(sources, absolute_path):
+    """``(source, POSIX path below it)`` of the deepest source holding the path.
+
+    A source matches by its real path or by its spelling as configured (a
+    detected output folder can be a symlink), and the deepest real path wins.
+    The path is compared lexically after ``normpath`` and never resolved, so a
+    symlinked subfolder keeps its listed spelling. Containment folds case
+    where the OS does. *source* is the real path. None when no source
+    contains the path.
+    """
+    path = os.path.normpath(str(absolute_path))
+    folded = os.path.normcase(path)
+    best = None
+    for source in sources:
+        real = os.path.normpath(os.path.realpath(str(source)))
+        for spelling in dict.fromkeys((real, os.path.normpath(str(source)))):
+            prefix = os.path.join(os.path.normcase(spelling), "")
+            if not folded.startswith(prefix):
+                continue
+            if best is None or _source_depth(real) > _source_depth(best[0]):
+                best = (real, spelling)
+            break
+    if best is None:
+        return None
+    relative = os.path.relpath(path, best[1])
+    return best[0], relative.replace(os.sep, "/")
+
+
+def image_category_key(sources, absolute_path):
+    """The file key of an image's own category (#332), or None.
+
+    ``(root key, relative key)``: the deepest output source that contains the
+    file and the path below it, keyed with the favorites helpers. Without
+    nested sources it equals the file's favorite key. A path no source
+    contains has no key (and so no own category).
+    """
+    found = deepest_source(sources, absolute_path)
+    if found is None:
+        return None
+    source, relative = found
+    return _favorite_root_key(source), _favorite_relative_key(relative)
+
+
 def _name_suffix(name):
     """``Path(name).suffix`` as Python 3.10-3.13 compute it.
 
@@ -816,7 +939,8 @@ def _name_suffix(name):
 def _walk_media(output_path, max_files):
     """Yield the ``os.DirEntry`` of each media file under *output_path*.
 
-    Symlinks are never followed, ``thumbnails/`` is skipped, descent stops
+    Symlinks are never followed, ``thumbnails/`` and trash folders are
+    skipped (``utils.media_folders``, #501), descent stops
     at MAX_SCAN_DEPTH and at most *max_files* entries are produced. The order
     is ``os.walk``'s (top-down, subfolders in ``os.scandir`` order, files by
     name), which the gallery's ties in mtime keep. Each entry's type comes
@@ -828,8 +952,6 @@ def _walk_media(output_path, max_files):
     produced = 0
     while stack:
         top, rel_parts = stack.pop()
-        if "thumbnails" in rel_parts:
-            continue
         dirs, files = [], []
         try:
             with os.scandir(top) as entries:
@@ -853,7 +975,7 @@ def _walk_media(output_path, max_files):
         if len(rel_parts) >= MAX_SCAN_DEPTH:
             continue
         for entry in reversed(dirs):
-            if not entry.is_symlink():
+            if not entry.is_symlink() and not is_skipped_folder(entry.name):
                 stack.append((entry.path, rel_parts + (entry.name,)))
 
 
@@ -877,8 +999,10 @@ def _settled_entry(root, relative):
     *folders, name = relative.split(os.sep)
     if _name_suffix(name).lower() not in MEDIA_EXTENSIONS:
         return None
-    if "thumbnails" in folders or len(folders) > MAX_SCAN_DEPTH:
+    if in_skipped_folder(folders) or len(folders) > MAX_SCAN_DEPTH:
         return None
+    if in_trash_below_roots(path, [root]):
+        return None  # a linked folder on the way leads into a trash folder
     folder = os.fspath(root)
     for part in ("", *folders):
         folder = os.path.join(folder, part) if part else folder
@@ -1058,8 +1182,12 @@ def _workspace_filters(query: Mapping) -> dict:
     the linked positive's text, title and tag names. ``category`` is exact,
     ``tags`` is a comma list that must all be present, ``sort=rating`` ranks by
     the linked positive, and ``favorites=1`` keeps only favorites (the
-    Favorites page, #249 D51). Raises ValueError for any unknown or oversized
-    value.
+    Favorites page, #249 D51). ``collection=<id>`` (1 to 9 digits) keeps only
+    that collection's members (#331); it wins over ``favorites`` (a page never
+    sets both). ``removed=1`` lists only the files a removal mark hides (#498,
+    Show removed images); such a file has no records, so it never combines
+    with ``favorites``, ``collection``, ``category``, ``tags`` or the rating
+    sort. Raises ValueError for any unknown or oversized value.
     """
     text = query.get("q", "").strip()
     folded = text.casefold()
@@ -1073,8 +1201,16 @@ def _workspace_filters(query: Mapping) -> dict:
         {tag.strip() for tag in query.get("tags", "").split(",") if tag.strip()}
     )
     favorites = query.get("favorites", "0")
+    collection = query.get("collection", "")
+    removed = query.get("removed", "0")
+    if removed not in ("0", "1") or (
+        removed == "1"
+        and (favorites == "1" or collection or category or tags or order == "rating")
+    ):
+        raise ValueError("Invalid gallery filters")
     if (
         favorites not in ("0", "1")
+        or (collection != "" and _COLLECTION_ID.fullmatch(collection) is None)
         or len(text) > 500
         or len(folded) > 500
         or media not in ("all", "image", "video")
@@ -1097,7 +1233,9 @@ def _workspace_filters(query: Mapping) -> dict:
         "path": exact.casefold(),
         "category": category,
         "tags": tags,
-        "favorites": favorites == "1",
+        "favorites": favorites == "1" and not collection,
+        "collection": int(collection) if collection else None,
+        "removed": removed == "1",
     }
 
 
@@ -1115,6 +1253,8 @@ LISTING_FILTER_KEYS = frozenset(
         "media",
         "sort",
         "favorites",
+        # A collection page's filter (#331): bulk actions act on its members.
+        "collection",
     }
 )
 MAX_LISTING_FILTER_VALUE = 2048
@@ -1171,22 +1311,29 @@ def _admitted_entries(
     entries: list,
     filters: dict,
     links: dict | None,
-    favorites: frozenset | None = None,
+    members: frozenset | None = None,
     image_tags: dict | None = None,
+    own_categories: dict | None = None,
 ):
     """Yield ``(position, entry, link match)`` for each entry the filters admit.
 
-    *links* maps normalized paths to (hit, rating, positive id) for every
-    unambiguously linked image (see PromptDatabase.get_image_link_matches); a
-    category or tag filter admits only those, and ``q`` admits a filename match
-    or a linked-positive hit. *favorites*, when given, admits only those listed
-    paths (``favorites=1``). *image_tags* maps normalized paths to their
-    _ImageTagMatch: a tag filter also admits a file whose current image tags
-    (with its linked positive's tags) carry every tag, and ``q`` also admits an
-    image tag name hit.
+    *links* maps normalized paths to (hit, rating, positive id, inherited
+    category) for every unambiguously linked image (see
+    PromptDatabase.get_image_link_matches); a tag filter admits only those,
+    and ``q`` admits a filename match or a linked-positive hit. A category
+    admits a file whose effective category equals it (#332 MC5): its own
+    category (*own_categories*, ``{normalized path: category}``) when it has one,
+    else the inherited one, so an unlinked file with its own category is
+    admitted. *members*, when given, admits only those listed paths (the
+    favorites of ``favorites=1`` or a ``collection``'s members). *image_tags*
+    maps normalized paths to their _ImageTagMatch: a tag filter also admits a
+    file whose current image tags (with its linked positive's tags) carry every
+    tag, and ``q`` also admits an image tag name hit.
     """
     query, media, folder = filters["query"], filters["media"], filters["folder"]
-    members_only = filters["category"] is not None or bool(filters["tags"])
+    category = filters["category"]
+    members_only = bool(filters["tags"])
+    own = own_categories or {}
     native_folder = folder.replace("/", os.sep)
     nested = native_folder + os.sep
     exact = filters.get("path", "")
@@ -1199,12 +1346,18 @@ def _admitted_entries(
             continue
         if media != "all" and (media == "video") != entry.video:
             continue
-        if favorites is not None and entry.path not in favorites:
+        if members is not None and entry.path not in members:
             continue
         match = None if links is None else links.get(entry.normalized)
         image = None if image_tags is None else image_tags.get(entry.normalized)
         if members_only and match is None and not (image and image.tags):
             continue
+        if category is not None:
+            effective = own.get(entry.normalized) if own else None
+            if effective is None and match is not None:
+                effective = match[3]
+            if effective != category:
+                continue
         if (
             query
             and query not in entry.folded
@@ -1221,8 +1374,9 @@ def _filtered_page(
     size: int,
     filters: dict,
     links: dict | None,
-    favorites: frozenset | None = None,
+    members: frozenset | None = None,
     image_tags: dict | None = None,
+    own_categories: dict | None = None,
 ) -> tuple[int, list, int | None]:
     """Count the *entries* the filters admit and take *size* from *start* on.
 
@@ -1232,7 +1386,7 @@ def _filtered_page(
     """
     total, page, positives = 0, [], set()
     for position, entry, match in _admitted_entries(
-        entries, filters, links, favorites, image_tags
+        entries, filters, links, members, image_tags, own_categories
     ):
         total += 1
         if match is not None:
@@ -1249,13 +1403,27 @@ def _in_subfolder(rel_dir, subfolder):
 class ImageRoutesMixin:
     """Mixin providing image and gallery-related API endpoints."""
 
+    def _workspace_keys(self):
+        """This API's scope and cursor keys, loaded once (#430).
+
+        They derive from the secret persisted beside the database, so a restart
+        keeps every scope and cursor an open page holds. The first call reads
+        (or writes) one small file; later calls return the cached keys, which
+        a live library move or restore does not change before a restart.
+        """
+        keys = self.__dict__.get("_workspace_keys_cache")
+        if keys is None:
+            with _WORKSPACE_KEYS_LOCK:
+                keys = self.__dict__.get("_workspace_keys_cache")
+                if keys is None:
+                    db = getattr(self, "db", None)
+                    model = getattr(db, "model", None)
+                    keys = workspace_keys_for(getattr(model, "db_path", None))
+                    self.__dict__["_workspace_keys_cache"] = keys
+        return keys
+
     def _gallery_root_scope(self, root: Path, index: int) -> str:
-        payload = json.dumps(
-            ["prompt-manager-gallery-root-v1", index, str(_canonical(root))],
-            separators=(",", ":"),
-            ensure_ascii=False,
-        ).encode("utf-8")
-        return hmac.new(_WORKSPACE_CURSOR_SECRET, payload, hashlib.sha256).hexdigest()
+        return gallery_root_scope(self._workspace_keys(), str(_canonical(root)), index)
 
     def _gallery_scope_error(
         self, query: Mapping, roots: list[Path]
@@ -1370,7 +1538,7 @@ class ImageRoutesMixin:
         async def clear_image_favorite_route(request):
             return await self.update_image_favorite(request, favorite=False)
 
-        # POST, local-only: opens this computer's file manager (D38).
+        # POST, same-origin: opens the server computer's file manager (D38).
         @routes.post("/prompt_manager/images/reveal")
         async def reveal_image_route(request):
             return await self.reveal_image(request)
@@ -1919,6 +2087,8 @@ class ImageRoutesMixin:
             limit, _offset = parse_page_params(request.query, default_limit=100)
         except ValueError:
             return bad_request("limit and offset must be integers")
+        # #430: the first use may create the key file; never on the event loop.
+        cursor_secret = (await self._run_in_executor(self._workspace_keys)).cursor
         try:
             root_index = _workspace_root(request.query, output_dirs)
             filters = _workspace_filters(request.query)
@@ -1936,27 +2106,44 @@ class ImageRoutesMixin:
                         filters["category"],
                         filters["tags"],
                         filters["favorites"],
+                        filters["collection"],
+                        filters["removed"],
                     ]
                 ).encode()
             ).hexdigest()
             token = request.query.get("cursor")
             after = (
-                _workspace_cursor_key(token, scope, filters["order"]) if token else None
+                _workspace_cursor_key(token, scope, filters["order"], cursor_secret)
+                if token
+                else None
+            )
+        except CursorStale as exc:
+            return web.json_response(
+                {"success": False, "code": "cursor-stale", "error": str(exc)},
+                status=400,
+                headers={"Cache-Control": "no-store"},
             )
         except ValueError as exc:
             return bad_request(str(exc))
 
-        listings = [
-            (index, root, await self._get_gallery_files(root))
-            for index, root in enumerate(output_dirs)
-            if root_index is None or index == root_index
-        ]
         try:
+            if filters["collection"] is not None and not await self._run_in_executor(
+                self.db.collection_exists, filters["collection"]
+            ):
+                raise CollectionMissing("No such collection")
+            listings = await self._workspace_listings(output_dirs, root_index)
             page, total, has_more, next_cursor, positive_count = (
                 await self._run_in_executor(
                     self._select_workspace_page, listings, filters, after, limit, scope
                 )
             )
+            # #498: Show removed images (N), every removed file in the selected
+            # source(s) whatever the filters (the hidden set is cached work).
+            removed_total = len(
+                await self._run_in_executor(self._hidden_entries, listings)
+            )
+        except CollectionMissing:
+            return collection_not_found()
         except Exception:
             # A filter that needs the prompt links or the image tags cannot be
             # served without them. Never echo the exception: it can carry SQL
@@ -1981,6 +2168,7 @@ class ImageRoutesMixin:
             "limit": limit,
             "has_more": has_more,
             "next_cursor": next_cursor,
+            "removed_total": removed_total,
         }
         if positive_count is _COUNT_OMITTED:
             del result["positive_count"]
@@ -2172,9 +2360,10 @@ class ImageRoutesMixin:
         stat'ed (never every listed file), and a candidate's tags count only
         while a byte record is verified at its present ``(size, mtime_ns)``
         (spec amendment S1). Under a Tags filter the candidates' linked
-        positives are read too, so their tags and category combine.
+        positives are read too, so their tags combine; the category is checked
+        once, on the effective category, by _admitted_entries (#332).
         """
-        tags, query, category = filters["tags"], filters["query"], filters["category"]
+        tags, query = filters["tags"], filters["query"]
         wanted = set(tags)
         located = self._workspace_locators(listings)
         # The tag index answers which files carry a relevant name (#379); no
@@ -2204,11 +2393,9 @@ class ImageRoutesMixin:
             link = facts.get(entry.normalized)
             carried = set(names).union(link[4] if link else ())
             matches[entry.normalized] = _ImageTagMatch(
-                bool(wanted)
-                and wanted <= carried
-                and (category is None or (link is not None and link[3] == category)),
+                bool(wanted) and wanted <= carried,
                 bool(query) and any(query in name.casefold() for name in names),
-                link[:3] if link else None,
+                tuple(link[:4]) if link else None,
             )
         return matches
 
@@ -2217,10 +2404,16 @@ class ImageRoutesMixin:
     ) -> tuple:
         """The ordered entries and what admits them (blocking; run in executor).
 
-        Returns ``(entries, key, links, image_tags, favorites)``: the listing in
-        the filters' order, its keyset key, and the link, image-tag and favorite
-        maps _admitted_entries reads. One SELECT (get_image_link_matches) reads
-        every linked positive when *read_links*. A failed read raises when the
+        Returns ``(entries, key, links, image_tags, members, own)``: the
+        listing in the filters' order, its keyset key, and the link, image-tag,
+        member and own-category maps _admitted_entries reads (members: a
+        collection's, else the favorites, else None). A collection deleted since
+        the route checked it raises CollectionMissing. One SELECT
+        (get_image_link_matches) reads every linked positive when *read_links*;
+        under a category it keeps only links whose raw recipe or positive
+        category is that value (the inherited one is decided in Python), and
+        the links of files whose own category is that value are read by path,
+        so their rating and positive still count (#332). A failed read raises when the
         filters need it (category, tags, the rating sort) or *strict*; else the
         listing stays usable without links (a search then matches filenames
         only). A failed image-tag read raises under a Tags filter; a search then
@@ -2232,10 +2425,10 @@ class ImageRoutesMixin:
             try:
                 links = self.db.get_image_link_matches(
                     filters["text"],
-                    category,
                     tags,
                     every_link=True,
                     wanted=self._workspace_wanted(listings),
+                    category=category,
                 )
             except Exception:
                 if strict or category is not None or tags or order == "rating":
@@ -2249,6 +2442,13 @@ class ImageRoutesMixin:
                     ),
                     exc_info=True,
                 )
+        own = None
+        if category is not None:
+            # A failed read raises: an unfiltered page must never pass for the
+            # category (DC6).
+            own = self._own_category_map(self._get_all_output_dirs(), listings)
+            if links is not None:
+                links = self._own_category_links(links, own, filters)
         image_tags = None
         if filters["query"] or tags:
             try:
@@ -2292,10 +2492,44 @@ class ImageRoutesMixin:
             def key(entry):
                 return _workspace_key(entry, order)
 
-        favorites = (
-            self._workspace_favorite_paths(listings) if filters["favorites"] else None
+        # #480: files removed from the library stay on disk, hidden here; the
+        # removed view (#498) lists only them.
+        hidden = self._hidden_entries(listings)
+        if filters.get("removed"):
+            entries = [entry for entry in entries if entry.normalized in hidden]
+        elif hidden:
+            entries = [entry for entry in entries if entry.normalized not in hidden]
+        return (
+            entries,
+            key,
+            links,
+            image_tags,
+            self._workspace_members(listings, filters),
+            own,
         )
-        return entries, key, links, image_tags, favorites
+
+    def _own_category_links(self, links: dict, own: dict, filters: dict) -> dict:
+        """*links* plus the links of files whose own category is the filter's.
+
+        Their inherited category differs, so the category's link read left
+        them out; read by path (get_image_link_facts), kept only when their
+        positive has every filter tag, as the link read would.
+        """
+        category, wanted = filters["category"], set(filters["tags"])
+        missing = [
+            path
+            for path, value in own.items()
+            if value == category and path not in links
+        ]
+        if not missing:
+            return links
+        facts = self.db.get_image_link_facts(missing, filters["text"])
+        extra = {
+            path: tuple(fact[:4])
+            for path, fact in facts.items()
+            if wanted <= set(fact[4])
+        }
+        return {**links, **extra} if extra else links
 
     def _select_workspace_page(
         self,
@@ -2324,7 +2558,7 @@ class ImageRoutesMixin:
             or bool(filters["tags"])
             or order == "rating"
         )
-        entries, key, links, image_tags, favorites = self._workspace_admission(
+        entries, key, links, image_tags, members, own = self._workspace_admission(
             listings, filters, read_links=needed or after is None
         )
         start = 0
@@ -2335,13 +2569,17 @@ class ImageRoutesMixin:
             else:
                 start = bisect_right(entries, after, key=key)
         total, page, positive_count = _filtered_page(
-            entries, start, limit + 1, filters, links, favorites, image_tags
+            entries, start, limit + 1, filters, links, members, image_tags, own
         )
         if not needed and after is not None:
             positive_count = _COUNT_OMITTED
         has_more = len(page) > limit
         page = page[:limit]
-        next_cursor = _workspace_cursor(key(page[-1]), scope) if has_more else None
+        next_cursor = (
+            _workspace_cursor(key(page[-1]), scope, self._workspace_keys().cursor)
+            if has_more
+            else None
+        )
         return (
             [(entry.path, entry.mtime, entry.root, entry.index) for entry in page],
             total,
@@ -2357,12 +2595,12 @@ class ImageRoutesMixin:
 
         The links are read strictly: the positives must be the listing's own.
         """
-        entries, _key, links, image_tags, favorites = self._workspace_admission(
+        entries, _key, links, image_tags, members, own = self._workspace_admission(
             listings, filters, read_links=True, strict=True
         )
         targets, positives, unlinked, scopes = [], {}, 0, {}
         for _position, entry, match in _admitted_entries(
-            entries, filters, links, favorites, image_tags
+            entries, filters, links, members, image_tags, own
         ):
             if len(targets) == cap:
                 return ListingSelection(targets, list(positives), unlinked, True)
@@ -2384,9 +2622,11 @@ class ImageRoutesMixin:
     ) -> ListingSelection:
         """The images a parse_listing_filter result admits right now (#392).
 
-        Raises ValueError for a root outside the current roots, and
+        Raises ValueError for a root outside the current roots,
         ListingSourceChanged when the filter's ``root_scope`` no longer names
-        its root (the sources were renumbered since the listing).
+        its root (the sources were renumbered since the listing), and
+        CollectionMissing when its ``collection`` no longer exists (checked
+        before any scan and again after the members are read).
         """
         output_dirs = list(self._get_all_output_dirs())
         root_index = _workspace_root(params, output_dirs)
@@ -2396,11 +2636,11 @@ class ImageRoutesMixin:
                 raise ListingSourceChanged()
             raise ValueError("Invalid gallery root scope")
         filters = _workspace_filters(params)
-        listings = [
-            (index, root, await self._get_gallery_files(root))
-            for index, root in enumerate(output_dirs)
-            if root_index is None or index == root_index
-        ]
+        if filters["collection"] is not None and not await self._run_in_executor(
+            self.db.collection_exists, filters["collection"]
+        ):
+            raise CollectionMissing("No such collection")
+        listings = await self._workspace_listings(output_dirs, root_index)
         return await self._run_in_executor(
             self._select_workspace_matches, listings, filters, cap
         )
@@ -2545,6 +2785,9 @@ class ImageRoutesMixin:
             if _has_traversal(filepath):
                 return _forbidden()
             suffix = Path(filepath).suffix.lower()
+            if in_trash_folder(filepath):
+                # Before any file access, so no preview is made for it (#543).
+                return _file_not_found()
             if suffix not in SERVABLE_EXTENSIONS and not (
                 # A JPEG XL preview is served from thumbnails/ only (#317).
                 suffix in thumbnail_settings.THUMBNAIL_EXTENSIONS
@@ -2568,6 +2811,8 @@ class ImageRoutesMixin:
                 # a fall-through to the next root.
                 if not _is_within(image_path, output_path):
                     return _forbidden()
+                if in_trash_below_roots(image_path, output_dirs):
+                    return _file_not_found()
                 if image_path.is_file():
                     return self._file_response(image_path)
 
@@ -2619,8 +2864,9 @@ class ImageRoutesMixin:
         if _is_thumbnail_cache_path(filepath):
             return _forbidden()
         image_path = root / filepath
-        if not _is_within(image_path, root):
-            return _forbidden()
+        denied = _media_access_error(image_path, [root])
+        if denied is not None:
+            return denied
         if not image_path.is_file():
             return web.json_response(
                 {"success": False, "error": "Image file not found"}, status=404
@@ -2880,7 +3126,9 @@ class ImageRoutesMixin:
         no symlinks), each preview folder is listed once, and at most
         MAX_THUMBNAIL_FILES targets are queued per batch (a job plans again
         after each batch); ``remaining`` counts the targets beyond that cap.
-        Sources in *exclude* (worked on by an earlier batch) are left out.
+        Sources in *exclude* (worked on by an earlier batch) are left out, and
+        so are files removed from the library (#501: a removal mark hides
+        them, and their previews went with their records).
         ``stop()`` true ends the walk before the next file.
         """
         settings = writer_settings(settings)
@@ -2889,11 +3137,14 @@ class ImageRoutesMixin:
         plan = {key: 0 for key in _PLAN_COUNTS}
         plan.update(targets=[], fresh_files=[])
         folders = {}
+        removed = self._removal_check_under(output_path)
         for src in _iter_media_files(output_path, MAX_GALLERY_FILES):
             if stop is not None and stop():
                 break
             if exclude and src in exclude:
                 continue
+            if removed(src):
+                continue
             rel_no_ext = src.relative_to(output_path).with_suffix("")
             stem = f"{rel_no_ext.name}{thumbnail_settings.THUMB_SUFFIX}"
             dst = thumbnails_dir / rel_no_ext.parent / (stem + settings.extension)
@@ -3461,12 +3712,12 @@ class ImageRoutesMixin:
     async def reveal_image(self, request):
         """POST ``{root_index, root_scope, path}``: show the file in its folder.
 
-        Local-only (a same-origin browser request from a loopback client, no
-        forwarding header) and JSON-only: the browser must run on the
-        computer whose file manager opens. One reveal at a time (429 busy).
+        Same-origin and JSON-only, directly or through a proxy: the folder
+        opens on the computer running ComfyUI, wherever the browser is
+        (maintainer decision, #533). One reveal at a time (429 busy).
         """
-        if not is_local_request(request.remote, request.headers, request.scheme):
-            return _not_local()
+        if not is_same_origin_request(request.headers, request.scheme):
+            return _not_same_origin()
         if request.content_type != "application/json":
             # A non-JSON POST is a CORS "simple" request with no preflight.
             return web.json_response(
@@ -3544,7 +3795,9 @@ class ImageRoutesMixin:
                 {
                     "success": False,
                     "code": "unavailable",
-                    "error": "No file manager is available on this computer.",
+                    "error": (
+                        "No file manager is available on the computer running ComfyUI."
+                    ),
                 },
                 status=501,
             )
@@ -3585,25 +3838,58 @@ class ImageRoutesMixin:
         self._favorite_listing_cache[cache_key] = (files, listing)
         return listing
 
-    def _workspace_favorite_paths(self, listings: list[tuple]) -> frozenset:
-        """The listed paths of every favorite in the selected roots (blocking).
+    def _workspace_members(self, listings: list[tuple], filters: dict):
+        """The member set the filters ask for, or None (blocking)."""
+        collection = filters.get("collection")
+        if collection is not None:
+            members = self._workspace_member_paths(
+                listings,
+                lambda root_key: self.db.collection_members(collection, root_key),
+            )
+            # Checked after the reads: a collection deleted before or while
+            # they ran is a 404, never an empty page passing for it.
+            if not self.db.collection_exists(collection):
+                raise CollectionMissing("No such collection")
+            return members
+        if filters["favorites"]:
+            return self._workspace_favorite_paths(listings)
+        return None
 
-        One primary-key read per root (get_root_favorites), matched against the
-        root's cached ``{relative key: listing spelling}``, so the work follows
-        the favorites rather than the files, and a key folds case exactly as
-        the toggle stored it (Windows). A favorite whose file is gone matches
-        nothing. A failed read raises: an unfiltered page must never pass for
-        the favorites.
+    def _workspace_favorite_paths(self, listings: list[tuple]) -> frozenset:
+        """The listed paths of every favorite in the selected roots (blocking)."""
+        return self._workspace_member_paths(listings, self.db.get_root_favorites)
+
+    def _workspace_member_paths(
+        self, listings: list[tuple], keys_for_source: Callable[[str], Iterable[str]]
+    ) -> frozenset:
+        """The listed paths of the stored keys of each selected root (blocking).
+
+        One read per root (``keys_for_source(root key)``: the favorites' or a
+        collection's primary-key range), matched against the root's cached
+        ``{relative key: listing spelling}``, so the work follows the members
+        rather than the files, and a key folds case exactly as it was stored
+        (Windows). A member whose file is gone matches nothing. A failed read
+        raises: an unfiltered page must never pass for the members.
         """
         paths = set()
         for _index, root, files in listings:
             listing = self._favorite_listing(root, files)
-            for key in self.db.get_root_favorites(_favorite_root_key(root)):
+            for key in keys_for_source(_favorite_root_key(root)):
                 listed = listing.get(key)
                 if listed is not None:
                     paths.add(root / listed)
         return frozenset(paths)
 
+    async def _workspace_listings(
+        self, output_dirs: list[Path], root_index: int | None
+    ) -> list[tuple]:
+        """``(index, root, scan)`` of every selected root (cached scans)."""
+        return [
+            (index, root, await self._get_gallery_files(root))
+            for index, root in enumerate(output_dirs)
+            if root_index is None or index == root_index
+        ]
+
     def _workspace_favorites(self, page: list[tuple]) -> set[tuple[int, str]]:
         """``(root index, listing path)`` of the favorites among *page* entries."""
         by_root: dict[tuple[int, Path], dict[str, str]] = {}
@@ -3681,13 +3967,20 @@ class ImageRoutesMixin:
                     except Exception:
                         # The link stays known; only its title is withheld.
                         self.logger.warning("Inspection link title could not be read")
+                # An output file's own category (#332); LoRA roots have none.
+                own = (
+                    self._read_own_category(outputs, path)
+                    if index < len(outputs)
+                    else None
+                )
                 try:
                     observed = inspect_current_file(
                         path,
                         source_label=_public_path(roots[index]),
                         saved=saved,
-                        library=self._inspection_library(
-                            saved, unavailable=unavailable
+                        library=apply_own_category(
+                            self._inspection_library(saved, unavailable=unavailable),
+                            own,
                         ),
                         image_tags=self._inspection_image_tags(
                             roots[index], Path(relative).parts
@@ -3732,28 +4025,22 @@ class ImageRoutesMixin:
             )
 
     def _inspection_image_tags(self, root: Path, parts: tuple) -> Callable:
-        """The inspector's ``image_tags`` reader for one rooted file (S1).
-
-        The returned function takes the inspection's own stable stat and
-        answers ``current`` only for a byte record verified at exactly that
-        ``(size, mtime_ns)``; a failed read is ``unavailable``, never an error.
-        """
+        """The inspector's ``image_tags`` reader for one rooted file (S1)."""
         locator = os.path.normcase(os.path.join(os.path.realpath(root), *parts))
+        return image_tags_reader(self.db, locator, self.logger)
 
-        def read(size: int, mtime_ns: int) -> dict:
-            try:
-                found = self.db.current_image_tags({locator: (size, mtime_ns)})
-            except Exception:
-                self.logger.warning(
-                    "Inspection image tags could not be read", exc_info=True
-                )
-                return {"state": "unavailable", "tags": []}
-            tags = found.get(locator)
-            if tags is None:
-                return {"state": "none", "tags": []}
-            return {"state": "current", "tags": list(tags)}
+    def _read_own_category(self, sources, path):
+        """One file's own category, None, or OWN_CATEGORY_UNREAD (blocking).
 
-        return read
+        Keyed by ``image_category_key`` over the output sources, as Images
+        writes it. A failed read is logged and hides the category (DC5).
+        """
+        try:
+            key = image_category_key(sources, path)
+            return None if key is None else self.db.image_category(*key)
+        except Exception:
+            self.logger.warning("Image category could not be read", exc_info=True)
+            return OWN_CATEGORY_UNREAD
 
     def _inspection_library(self, saved: dict | None, *, unavailable: bool) -> dict:
         """The inspector's Library facts; the route sets the title afterwards."""

py/api/inspection_service.py

@@ -93,6 +93,35 @@ def _in_host_temp(path: Path) -> bool:
         return False
 
 
+def image_tags_reader(
+    db: Any, locator: str, logger: Any, *, close: bool = False
+) -> Callable[[int, int], dict]:
+    """The inspector's ``image_tags`` reader for one file *locator* (S1).
+
+    The returned function takes the inspection's own stable stat and answers
+    ``current`` only for a byte record verified at exactly that
+    ``(size, mtime_ns)``; a failed read is ``unavailable``, never an error.
+    ``close`` closes the calling thread's connection afterwards, for routes
+    that close theirs after reading (History).
+    """
+
+    def read(size: int, mtime_ns: int) -> dict:
+        try:
+            found = db.current_image_tags({locator: (size, mtime_ns)})
+        except Exception:
+            logger.warning("Inspection image tags could not be read", exc_info=True)
+            return {"state": "unavailable", "tags": []}
+        finally:
+            if close:
+                db.model.close()
+        tags = found.get(locator)
+        if tags is None:
+            return {"state": "none", "tags": []}
+        return {"state": "current", "tags": list(tags)}
+
+    return read
+
+
 def inspect_current_file(
     path: Path,
     *,

py/api/jobs.py

@@ -123,6 +123,11 @@ MODEL_DOWNLOAD_JOB_KIND = "model_download"
 DUPLICATES_JOB_KIND = "duplicates"
 DUPLICATE_GROUP_NAMES = ("groups_found",)
 DUPLICATE_CLEANUP_GROUP_NAMES = ("removed", "kept", "errors")
+# The workspace Library's Delete… (#443, py/api/library_delete.py): a
+# ``records`` hold around its safety backup and write.
+PROMPT_DELETE_JOB_KIND = "prompt_delete"
+IMAGE_DELETE_JOB_KIND = "image_delete"  # #480
+IMAGE_DELETE_GROUP_NAMES = ("trashed", "removed", "not_changed", "errors")
 # The System health check (py/api/system.py): a read-only ``read`` job with
 # no file outcomes, so it may run beside a scan.
 HEALTH_JOB_KIND = "health"

py/api/library.py

@@ -21,9 +21,11 @@ from .pairs import pair_response
 try:
     from ...database.library import ARCHIVE_SCOPES
     from ...database.library_commands import LibraryCommandError
+    from ...database.library_folders import folder_prefixes, normalize_folder
 except ImportError:
     from database.library import ARCHIVE_SCOPES
     from database.library_commands import LibraryCommandError
+    from database.library_folders import folder_prefixes, normalize_folder
 
 _SECRET = os.urandom(32)
 
@@ -155,6 +157,13 @@ def _archive_scope(request: web.Request) -> str:
     return value
 
 
+def _shelf(request: web.Request) -> str:
+    value = request.query.get("shelf", "active")
+    if value not in ("active", "archived"):
+        raise ValueError("shelf must be active or archived")
+    return value
+
+
 def _missing() -> web.Response:
     return web.json_response(
         {"success": False, "error": "Positive prompt not found"}, status=404
@@ -283,36 +292,87 @@ class LibraryRoutesMixin:
         outputs = list(self._get_all_output_dirs())
         return self._media_roots(outputs), len(outputs)
 
+    def _library_root_spellings(self) -> list[str]:
+        """Every spelling of each output root (#444 folder filter): the
+        validated, resolved root and each configured or detected path that
+        resolves to it, so images saved through a symlinked root match."""
+        from ..config import GalleryConfig
+
+        roots = [str(root) for root in self._get_all_output_dirs()]
+        candidates = [
+            *GalleryConfig.MONITORING_DIRECTORIES,
+            self._find_comfyui_output_dir(),
+            *self._comfyui_output_dir_list(),
+        ]
+        spellings = []
+        for root in roots:
+            for value in (root, *candidates):
+                if not value or not isinstance(value, (str, os.PathLike)):
+                    continue
+                value = str(value)
+                same = value == root or os.path.normcase(
+                    os.path.realpath(value)
+                ) == os.path.normcase(root)
+                if same and value not in spellings:
+                    spellings.append(value)
+        return spellings
+
     @pair_response
     async def get_library_options(self, request: web.Request) -> web.Response:
-        result = await self._run_in_executor(self.db.get_library_options)
+        include = request.query.get("include", "")
+        if include not in ("", "folders"):
+            raise ValueError("include must be empty or 'folders'")
+        if include:
+            # Folders are read only when Refine opens (a walk of linked paths).
+            roots = await self._run_in_executor(self._library_root_spellings)
+            result = await self._run_in_executor(self.db.get_library_options, roots)
+        else:
+            result = await self._run_in_executor(self.db.get_library_options)
         return web.json_response({"success": True, **result})
 
     @pair_response
     async def list_library(self, request: web.Request) -> web.Response:
+        folder = normalize_folder(request.query.get("folder", ""))
         options = {
             "text": request.query.get("text", ""),
             "category": request.query.get("category"),
             "tags": sorted(set(request.query.getall("tag", []))),
+            "tag_mode": request.query.get("tag_mode", "all"),
             "sort": request.query.get("sort", "newest"),
+            # #443: which shelf; part of the cursor scope, so a cursor never
+            # crosses shelves. Not the variant ``archive`` scope of /{id}.
+            "shelf": _shelf(request),
         }
         limit = _page_limit(request)
         cursor = request.query.get("cursor")
+        roots = (
+            await self._run_in_executor(self._library_root_spellings) if folder else []
+        )
+        prefixes = folder_prefixes(roots, folder) if folder else None
 
         def read() -> tuple[dict, dict]:
             with self.db.library_snapshot(include_ceiling=True) as snapshot:
                 conn, epoch, ceiling = snapshot
+                # The folder and the roots it was resolved under join the scope.
                 scope = _scope(
-                    {"kind": "parents", "projection": 2, "epoch": epoch, **options}
+                    {
+                        "kind": "parents",
+                        "projection": 2,
+                        "epoch": epoch,
+                        **options,
+                        **({"folder": folder, "roots": roots} if folder else {}),
+                    }
                 )
                 result = self.db._list_library(
                     conn,
                     epoch,
                     ceiling,
                     **options,
+                    folder_prefixes=prefixes,
                     limit=limit,
                     after=_decode(cursor, scope),
                 )
+                result["folder"] = folder
                 records = self.db.get_library_previews(
                     [parent["id"] for parent in result["items"]]
                 )

py/api/library_delete.py

@@ -0,0 +1,321 @@
+"""Delete or archive selected Library prompts, and restore archived ones (#443).
+
+The workspace Prompt library's Delete… (D152). The legacy ``POST
+/prompt_manager/bulk/delete`` and ``DELETE /prompt_manager/delete/{id}`` are
+separate and unchanged.
+
+- ``POST /prompt_manager/library/delete/preview {prompt_ids, expected_epoch}``
+  classifies the selection (reads only, under a lease): the ids to ``delete``
+  (in no saved pair), to ``archive`` (paired), the ``protected`` ones (tagged
+  ``__protected__``, kept), counts of ``already_archived`` and ``not_found``,
+  the ``image_links`` a delete removes, the safety ``backup`` policy and,
+  when a backup would be taken, the ``disk`` it needs.
+- ``POST /prompt_manager/library/delete {archive_ids, delete_ids,
+  expected_epoch, backup}`` executes that review under a ``records`` hold
+  (refused 409 ``busy`` beside a scan, restore, maintenance, move or
+  Optimize). When a delete remains and a backup was promised (the reviewed
+  ``backup`` was "on" or the policy is on now) it checks the disk (507
+  ``insufficient-space``) and takes a verified safety backup (500
+  ``backup-failed``); then one transaction deletes the reviewed deletes whose
+  fingerprint is unchanged since the backup and archives the paired ones.
+- ``POST /prompt_manager/library/restore {prompt_ids, expected_epoch}``
+  removes the archive mark (under a lease).
+
+A changed storage epoch answers 409 ``storage-changed``; nothing is written.
+"""
+
+import sqlite3
+
+from aiohttp import web
+
+try:
+    from ...database.library_commands import LibraryCommandError
+    from ...database.safety_backup import SafetyBackupFailed
+except ImportError:
+    from database.library_commands import LibraryCommandError
+    from database.safety_backup import SafetyBackupFailed
+
+from . import maintenance as _maintenance
+from .admin import _prune_safety_backups
+from .job_routes import busy_response
+from .jobs import PROMPT_DELETE_JOB_KIND, JobBusy
+from .prompts import parse_bulk_prompt_ids
+
+PREVIEW_URL = "/prompt_manager/library/delete/preview"
+DELETE_URL = "/prompt_manager/library/delete"
+RESTORE_URL = "/prompt_manager/library/restore"
+DELETE_TITLE = "Delete prompts (Library)"
+_SELECTION_KEYS = frozenset({"prompt_ids", "expected_epoch"})
+_DELETE_KEYS = frozenset({"archive_ids", "delete_ids", "expected_epoch", "backup"})
+# #482: Delete permanently, with its digests; both or neither (a #443 body).
+_PAIRED_KEYS = frozenset({"delete_paired_ids", "paired_digests"})
+# #492: the shelf the Delete… runs on, optional on its own (default "active").
+_SHELF_KEYS = frozenset({"shelf"})
+STORAGE_CHANGED = "Prompt storage was restored; refresh the library"
+
+
+def _failure(status, code, error, **extra):
+    return web.json_response(
+        {"success": False, "code": code, "error": error, **extra}, status=status
+    )
+
+
+def _invalid(message):
+    return _failure(400, "invalid-request", message)
+
+
+def _storage_changed(exc):
+    return _failure(409, exc.code, STORAGE_CHANGED, library_epoch=exc.epoch)
+
+
+async def _body(request, keys, *groups):
+    """The JSON object with exactly ``keys``, plus all or none of each group."""
+    try:
+        data = await request.json()
+    except ValueError:
+        raise ValueError("Expected a JSON object") from None
+    if not isinstance(data, dict):
+        raise ValueError("Expected a JSON object")
+    extra = set(data) - keys
+    partial = False
+    for group in groups:
+        if extra & group:
+            partial = partial or not group <= extra
+            extra -= group
+    if not keys <= set(data) or extra or partial:
+        raise ValueError("Request must contain exactly " + ", ".join(sorted(keys)))
+    return data
+
+
+def _shelf(data):
+    """#492: the shelf a Delete… was reviewed on."""
+    shelf = data.get("shelf", "active")
+    if shelf not in ("active", "archived"):
+        raise ValueError("shelf must be active or archived")
+    return shelf
+
+
+def _paired_delete(data, archive_ids):
+    """#482: the reviewed archive ids to delete with their pairs -> digest."""
+    if "delete_paired_ids" not in data:
+        return {}
+    ids = _reviewed_ids(data["delete_paired_ids"], "delete_paired_ids")
+    digests = data["paired_digests"]
+    if not isinstance(digests, dict):
+        raise ValueError("paired_digests must map prompt ids to digests")
+    if not set(ids) <= set(archive_ids):
+        raise ValueError("delete_paired_ids must be reviewed archive ids")
+    chosen = {}
+    for pid in ids:
+        digest = digests.get(str(pid))
+        if not isinstance(digest, str) or len(digest) != 64:
+            raise ValueError("Every delete_paired_ids entry needs its review digest")
+        chosen[pid] = digest
+    return chosen
+
+
+def _reviewed_ids(value, name):
+    """A reviewed id list: possibly empty, else as ``parse_bulk_prompt_ids``."""
+    if value == []:
+        return []
+    try:
+        return parse_bulk_prompt_ids(value)
+    except ValueError as exc:
+        raise ValueError(str(exc).replace("prompt_ids", name)) from None
+
+
+class LibraryDeleteRoutesMixin:
+    """Mixin providing the workspace Library's delete, archive and restore."""
+
+    def _register_library_delete_routes(self, routes):
+        routes.post(PREVIEW_URL)(self.preview_library_delete)
+        routes.post(DELETE_URL)(self.delete_library_prompts)
+        routes.post(RESTORE_URL)(self.restore_library_prompts)
+
+    async def preview_library_delete(self, request):
+        try:
+            data = await _body(request, _SELECTION_KEYS, _SHELF_KEYS)
+            ids = parse_bulk_prompt_ids(data["prompt_ids"])
+            shelf = _shelf(data)
+        except ValueError as exc:
+            return _invalid(str(exc))
+        db = self.db
+        policy = self._safety_backup_policy()
+        try:
+            async with self._jobs.lease("Library delete review"):
+                review = await self._run_in_executor(
+                    db.classify_library_delete,
+                    ids,
+                    expected_epoch=data["expected_epoch"],
+                    shelf=shelf,
+                )
+                disk = None
+                if (review["delete"] or review["deletable"]) and policy == "on":
+                    public, short, _size = await self._run_in_executor(
+                        _maintenance.disk_plan,
+                        db.model.db_path,
+                        backup=True,
+                        vacuum=False,
+                    )
+                    disk = {
+                        **public,
+                        "message": (
+                            None
+                            if short is None
+                            else _maintenance.short_space_message(short)
+                        ),
+                    }
+        except JobBusy as busy:
+            return busy_response(busy)
+        except LibraryCommandError as exc:
+            return _storage_changed(exc)
+        except ValueError as exc:
+            return _invalid(str(exc))
+        except (OSError, sqlite3.Error):
+            self.logger.exception("Library delete review failed")
+            return _failure(500, "review-failed", "The delete could not be reviewed")
+        return web.json_response(
+            {
+                "success": True,
+                "library_epoch": review["library_epoch"],
+                "delete": review["delete"],
+                "archive": review["archive"],
+                "protected": review["protected"],
+                "already_archived": len(review["already_archived"]),
+                "not_archived": len(review["not_archived"]),
+                "not_found": len(review["not_found"]),
+                "image_links": review["image_links"],
+                # #482: the archive ids Delete permanently may delete with pairs.
+                "deletable": review["deletable"],
+                "review_digests": {
+                    str(pid): digest for pid, digest in review["review_digests"].items()
+                },
+                "paired_counts": review["paired_counts"],
+                "paired_image_links": review["paired_image_links"],
+                "backup": policy,
+                "disk": disk,
+            }
+        )
+
+    async def delete_library_prompts(self, request):
+        try:
+            data = await _body(request, _DELETE_KEYS, _PAIRED_KEYS, _SHELF_KEYS)
+            shelf = _shelf(data)
+            archive_ids = _reviewed_ids(data["archive_ids"], "archive_ids")
+            delete_ids = _reviewed_ids(data["delete_ids"], "delete_ids")
+            if not archive_ids and not delete_ids:
+                raise ValueError("Nothing to delete or archive")
+            if len(archive_ids) + len(delete_ids) > 1000:
+                raise ValueError("At most 1000 prompts can be changed at once")
+            if set(archive_ids) & set(delete_ids):
+                raise ValueError("A prompt cannot be both archived and deleted")
+            if data["backup"] not in ("on", "off"):
+                raise ValueError("backup must be on or off")
+            paired = _paired_delete(data, archive_ids)
+        except ValueError as exc:
+            return _invalid(str(exc))
+        busy = self._jobs.blocker(PROMPT_DELETE_JOB_KIND, admission="records")
+        if busy is not None:
+            return busy_response(JobBusy(busy))
+        try:
+            async with self._jobs.hold(
+                PROMPT_DELETE_JOB_KIND, DELETE_TITLE, admission="records"
+            ) as job:
+                response = await self._held_library_delete(
+                    self.db, data, archive_ids, delete_ids, paired, shelf
+                )
+                if response.status >= 400:
+                    job.finish("failed")
+                return response
+        except JobBusy as busy:
+            return busy_response(busy)
+
+    async def _held_library_delete(
+        self, db, data, archive_ids, delete_ids, paired, shelf="active"
+    ):
+        epoch = data["expected_epoch"]
+        promised = data["backup"] == "on" or self._safety_backup_policy() == "on"
+        backup = None
+        try:
+            candidates = None
+            if delete_ids or paired:
+                review = await self._run_in_executor(
+                    db.classify_library_delete,
+                    [*delete_ids, *paired],
+                    expected_epoch=epoch,
+                    # #492: the same shelf, or archived ids would skip the backup.
+                    shelf=shelf,
+                )
+                candidates = review["fingerprints"]
+                # #482: a permanent delete of a prompt in a saved pair is backed up too.
+                if (candidates or review["deletable"]) and promised:
+                    _disk, short, _size = await self._run_in_executor(
+                        _maintenance.disk_plan,
+                        db.model.db_path,
+                        backup=True,
+                        vacuum=False,
+                    )
+                    if short is not None:
+                        return _failure(
+                            507,
+                            "insufficient-space",
+                            _maintenance.short_space_message(short),
+                        )
+                    backup = await self._run_in_executor(
+                        _maintenance.take_safety_backup, db.model
+                    )
+            result = await self._run_in_executor(
+                db.archive_or_delete_library_prompts,
+                archive_ids,
+                delete_ids,
+                expected_epoch=epoch,
+                candidates=candidates if candidates is not None else {},
+                delete_paired=paired,
+                shelf=shelf,
+            )
+        except LibraryCommandError as exc:
+            return _storage_changed(exc)
+        except SafetyBackupFailed as error:
+            self.logger.error("Safety backup before a Library delete failed")
+            return _failure(
+                500, "backup-failed", _maintenance.backup_failed_message(error)
+            )
+        except ValueError as exc:
+            return _invalid(str(exc))
+        except (OSError, sqlite3.Error):
+            self.logger.exception("Library delete failed")
+            return _failure(500, "delete-failed", "The prompts could not be changed")
+        finally:
+            if backup is not None:
+                await self._prune_after_delete(db)
+        return web.json_response({"success": True, **result, "backup": backup})
+
+    async def _prune_after_delete(self, db):
+        try:
+            await self._run_in_executor(_prune_safety_backups, db.model.db_path)
+        except Exception:  # pruning old copies never fails the delete
+            self.logger.exception("Could not prune old safety backups")
+
+    async def restore_library_prompts(self, request):
+        try:
+            data = await _body(request, _SELECTION_KEYS)
+            ids = parse_bulk_prompt_ids(data["prompt_ids"])
+        except ValueError as exc:
+            return _invalid(str(exc))
+        try:
+            async with self._jobs.lease("Library restore"):
+                result = await self._run_in_executor(
+                    self.db.restore_library_prompts,
+                    ids,
+                    expected_epoch=data["expected_epoch"],
+                )
+        except JobBusy as busy:
+            return busy_response(busy)
+        except LibraryCommandError as exc:
+            return _storage_changed(exc)
+        except ValueError as exc:
+            return _invalid(str(exc))
+        except (OSError, sqlite3.Error):
+            self.logger.exception("Library restore failed")
+            return _failure(500, "restore-failed", "The prompts could not be restored")
+        return web.json_response({"success": True, **result})

py/api/maintenance.py

@@ -281,7 +281,7 @@ def short_space_message(short):
     )
 
 
-def _changed_line(operation, count):
+def _changed_line(operation, count, marks=0):
     if operation == "optimize":
         return "Optimized the database"
     if operation == "duplicate_prompts":
@@ -291,7 +291,11 @@ def _changed_line(operation, count):
         noun = "unused prompt component" if count == 1 else "unused prompt components"
         return f"Removed {count:,} {noun}"
     noun = "link to a missing file" if count == 1 else "links to missing files"
-    return f"Removed {count:,} {noun}"
+    line = f"Removed {count:,} {noun}"
+    if marks:
+        gone = "removed image" if marks == 1 else "removed images"
+        line += f"; forgot {marks:,} {gone} whose files are gone or changed"
+    return line
 
 
 def take_safety_backup(model, label="backup"):
@@ -419,6 +423,7 @@ class MaintenanceRoutesMixin:
             draft.public(),
             {
                 "targets": draft.targets,
+                "marks": draft.marks,
                 "roots": roots,
                 "protected": draft.protected["count"],
                 "rows": draft.scope["count"],
@@ -488,7 +493,9 @@ class MaintenanceRoutesMixin:
     # ── apply ─────────────────────────────────────────────────────────
 
     async def apply_maintenance_plan(self, request):
-        data, error = await self._read_maintenance_body(request, ("token",))
+        from .image_delete import IMAGE_DELETE, parse_mode
+
+        data, error = await self._read_maintenance_body(request, ("token", "mode"))
         if error is not None:
             return error
         token = data.get("token")
@@ -497,6 +504,13 @@ class MaintenanceRoutesMixin:
         plan, refused = self._peek_plan(token)
         if refused is not None:
             return refused
+        mode = None
+        if plan.operation == IMAGE_DELETE:
+            mode = parse_mode(data.get("mode"))
+            if mode is None:
+                return _invalid('mode must be "library" or "trash"')
+        elif "mode" in data:
+            return _invalid("Unknown field: mode")
         store = self._maintenance_plans
         if plan.operation == ROTATED_LOGS:
             # Log files only: no database identity, backup or disk check.
@@ -544,6 +558,8 @@ class MaintenanceRoutesMixin:
         try:
             if plan.operation == DUPLICATE_FILES:
                 job = self._start_duplicate_cleanup(db, plan, backup)
+            elif plan.operation == IMAGE_DELETE:
+                job = self._start_image_delete(db, plan, mode, backup)
             elif plan.operation == WORKFLOW_STORAGE:
                 job = self._start_workflow_storage(db, backup)
             else:
@@ -642,6 +658,7 @@ class MaintenanceRoutesMixin:
                 plan.fingerprint,
                 payload["targets"],
                 payload["roots"],
+                payload.get("marks", ()),
             )
         except PlanChanged:
             return _fail_job(job, "plan-changed", PLAN_CHANGED)
@@ -653,7 +670,7 @@ class MaintenanceRoutesMixin:
         )
         job.record_counted("changed", result["changed"], rows)
         job.record_counted("protected", payload["protected"])
-        line = _changed_line(plan.operation, result["changed"])
+        line = _changed_line(plan.operation, result["changed"], result.get("marks", 0))
         job.log_line(line)
         job.update(progress=100, status_line=f"{line} · {backup_note(backup)}")
 

py/api/media_target.py

@@ -0,0 +1,60 @@
+"""The listing identity of one media file, as a request names it.
+
+Shared by the image-annotation routes and the collection routes (#331): a
+target is ``{root_index, root_scope, path}``, checked here without touching
+the filesystem or the database. The scope is compared with the current roots
+by the caller.
+"""
+
+import os
+import re
+
+from .images import _file_not_found, _forbidden, _has_traversal
+from .prompts import bad_request
+
+try:
+    from ...utils.media_capture import CAPTURE_EXTENSIONS
+    from ...utils.media_folders import in_trash_folder
+except ImportError:
+    from utils.media_capture import CAPTURE_EXTENSIONS
+    from utils.media_folders import in_trash_folder
+
+MAX_TARGET_PATH = 1024
+TARGET_FIELDS = frozenset({"root_index", "root_scope", "path"})
+_HEX64 = re.compile(r"[0-9a-f]{64}")
+TAGGING_MEDIA_MESSAGE = "Only media files can be tagged"
+
+
+def media_target(data: object, *, media_message: str = TAGGING_MEDIA_MESSAGE):
+    """``((index, scope, relative), None)`` for a target, else ``(None, error)``.
+
+    Only the listing identity is accepted: an int root index, the root's
+    64-hex scope and a bounded root-relative POSIX media path, never an
+    absolute, drive-qualified, backslash or ``..`` path (a 400 for a malformed
+    shape, a 403 for an unsafe or non-media path, carrying *media_message*, a
+    404 for a path in a trash folder, #543). A link or a short-name spelling
+    is refused later by the capture store's alias check.
+    """
+    if not isinstance(data, dict) or set(data) != TARGET_FIELDS:
+        return None, bad_request("target must name root_index, root_scope and path")
+    index, scope, relative = data["root_index"], data["root_scope"], data["path"]
+    if type(index) is not int or index < 0:
+        return None, bad_request("Invalid gallery root")
+    if not isinstance(scope, str) or _HEX64.fullmatch(scope) is None:
+        return None, bad_request("Invalid gallery root scope")
+    if not isinstance(relative, str) or not relative or len(relative) > MAX_TARGET_PATH:
+        return None, bad_request("path must be a relative media path")
+    parts = relative.split("/")
+    if (
+        "\0" in relative
+        or "\\" in relative
+        or relative.startswith("/")
+        or _has_traversal(relative)
+        or any(part in ("", ".", "..") or ":" in part for part in parts)
+    ):
+        return None, _forbidden()
+    if os.path.splitext(parts[-1])[1].lower() not in CAPTURE_EXTENSIONS:
+        return None, _forbidden(media_message)
+    if in_trash_folder(relative):
+        return None, _file_not_found()
+    return (index, scope, relative), None

py/api/pairs.py

@@ -102,7 +102,12 @@ class PairRoutesMixin:
             validate_prompt_text(negative)
         fields = metadata_fields(data)
         pair_id = await self._run_in_executor(
-            self.db.save_prompt_pair, positive, negative, **fields
+            self.db.save_prompt_pair,
+            positive,
+            negative,
+            # The node's Save pair button: as a run, a new prompt gets the metadata.
+            fill_new_positive=True,
+            **fields,
         )
         pair = await self._run_in_executor(self.db.get_prompt_pair, pair_id)
         return web.json_response({"success": True, "pair": pair})

py/api/prompts.py

@@ -8,8 +8,10 @@ import sqlite3
 from aiohttp import web
 
 try:
+    from ...database.library_commands import LibraryCommandError
     from ...database.pairs import PairDependencyError
 except ImportError:
+    from database.library_commands import LibraryCommandError
     from database.pairs import PairDependencyError
 from urllib.parse import quote
 
@@ -1128,7 +1130,14 @@ class PromptRoutesMixin:
     async def bulk_add_tags(self, request):
         """Bulk add tags to prompts."""
         try:
-            data = await request.json()
+            try:
+                data = await request.json()
+            except ValueError:
+                return bad_request("Invalid JSON body")
+            if not isinstance(data, dict):
+                return bad_request("Expected a JSON object")
+            if "expected_epoch" in data:
+                return await self._bulk_library_tags(data)
             prompt_ids = data.get("prompt_ids", [])
             new_tags = data.get("tags", [])
 
@@ -1180,6 +1189,8 @@ class PromptRoutesMixin:
                 )
             if "images_filter" in data:
                 return await self._bulk_category_by_filter(data)
+            if "expected_epoch" in data:
+                return await self._bulk_library_category(data)
             if not data.get("prompt_ids"):
                 return web.json_response(
                     {"success": False, "error": "No prompt IDs provided"}, status=400
@@ -1216,6 +1227,54 @@ class PromptRoutesMixin:
                 status=500,
             )
 
+    async def _bulk_library_tags(self, data: dict) -> web.Response:
+        """The workspace Library's fenced form (#442).
+
+        ``{prompt_ids, tags, expected_epoch}``: prompt tags only, never image tags.
+        """
+        return await self._fenced_library_write(
+            data, "tags", self.db.bulk_add_library_tags
+        )
+
+    async def _fenced_library_write(
+        self, data: dict, field: str, write
+    ) -> web.Response:
+        """One fenced Library bulk write: exact keys, checked ids, 409 on a restore."""
+        fields = {"prompt_ids", field, "expected_epoch"}
+        if set(data) != fields:
+            return bad_request(
+                "Request must contain exactly " + ", ".join(sorted(fields))
+            )
+        try:
+            prompt_ids = parse_bulk_prompt_ids(data["prompt_ids"])
+            result = await self._run_in_executor(
+                write, prompt_ids, data[field], expected_epoch=data["expected_epoch"]
+            )
+        except LibraryCommandError as exc:
+            return web.json_response(
+                {
+                    "success": False,
+                    "code": exc.code,
+                    "library_epoch": exc.epoch,
+                    "error": "Prompt storage was restored; refresh the library",
+                },
+                status=409,
+            )
+        except ValueError as exc:
+            return bad_request(str(exc))
+        return web.json_response({"success": True, **result})
+
+    async def _bulk_library_category(self, data: dict) -> web.Response:
+        """The workspace Library's fenced form (#437).
+
+        ``{prompt_ids, category, expected_epoch}``: a non-blank category on
+        the selected Library parents, refused with 409 ``storage-changed``
+        when prompt storage was restored since the page read its epoch.
+        """
+        return await self._fenced_library_write(
+            data, "category", self.db.bulk_set_library_category
+        )
+
     async def _bulk_category_by_filter(self, data: dict) -> web.Response:
         """Set the category on every linked positive a listing filter admits.
 
@@ -1227,7 +1286,9 @@ class PromptRoutesMixin:
         """
         from .images import (
             MAX_LISTING_SELECTION,
+            CollectionMissing,
             ListingSourceChanged,
+            collection_not_found,
             parse_listing_filter,
         )
 
@@ -1252,6 +1313,8 @@ class PromptRoutesMixin:
                 },
                 status=409,
             )
+        except CollectionMissing:
+            return collection_not_found()
         except ValueError as exc:
             return refused(str(exc))
         if selection.truncated:

py/api/revalidation.py

@@ -0,0 +1,47 @@
+"""Revalidated responses for the pages and static files PromptManager serves.
+
+``Cache-Control: no-cache`` lets the browser keep a copy but makes it ask the
+server before every reuse, so a PromptManager update reaches the browser on a
+normal reload (#478). The ETag lets an unchanged file answer 304 without a
+body, which keeps that reload cheap.
+
+The tag hashes the bytes rather than the file's mtime and size: an update can
+keep both (an archive extract, a same-length edit within one clock tick), and
+the handlers read the whole file anyway. It is weak because the gzip
+middleware may send the same content in a different encoding.
+"""
+
+import hashlib
+
+from aiohttp import web
+
+REVALIDATE = "no-cache"
+
+
+def entity_tag(body: bytes) -> str:
+    """Weak ETag for ``body``."""
+    return f'W/"{hashlib.sha256(body).hexdigest()[:32]}"'
+
+
+def etag_matches(if_none_match, etag: str) -> bool:
+    """True when an If-None-Match header names ``etag`` (weak comparison)."""
+    if not if_none_match:
+        return False
+    if if_none_match.strip() == "*":
+        return True
+    opaque = etag.removeprefix("W/")
+    return any(
+        candidate.strip().removeprefix("W/") == opaque
+        for candidate in if_none_match.split(",")
+    )
+
+
+def revalidated_response(request, body: bytes, content_type: str, charset=None):
+    """200 with ``body``, or 304 when the request already holds this version."""
+    etag = entity_tag(body)
+    headers = {"Cache-Control": REVALIDATE, "ETag": etag}
+    if etag_matches(request.headers.get("If-None-Match"), etag):
+        return web.Response(status=304, headers=headers)
+    return web.Response(
+        body=body, content_type=content_type, charset=charset, headers=headers
+    )

py/api/review.py

@@ -9,7 +9,10 @@ candidates and the dependency fingerprint. ``POST .../items/{id}/decision``
 records one explicit decision: Apply links the chosen sampler's pair only
 when the capture is the item's bytes, the current file still hashes to them,
 the evidence they yield is unchanged and the ingester's compatible-only rules
-allow it; Leave unresolved links nothing.
+allow it; Leave unresolved links nothing. ``POST .../items/{id}/link`` (#536)
+links a Library prompt the reviewer chose, under the same capture and
+compatibility guards; it is their choice, so what the bytes resolve to is not
+asked.
 
 Targets are formatted from the recorded spelling against the current roots
 (no file access beyond the roots' real paths); a file under no current root
@@ -28,12 +31,13 @@ import urllib.parse
 
 from aiohttp import web
 
-from .annotations import _HEX64, _TOKEN, _UUID, _capture_error, _error
+from .annotations import _capture_error, _error
 from .images import media_thumbnail_url
 from .inspection_service import VIDEO_EXTENSIONS
 from .job_routes import busy_response
 from .jobs import JobBusy
 from .prompts import bad_request
+from .review_guards import UNRESOLVED, _decision_guards, _link_guards
 
 try:
     from ...database.library import display_title
@@ -59,17 +63,6 @@ MAX_CURSOR = 4096
 MAX_BODY_BYTES = 64 * 1024
 # The serialized detail stays under this; past it the detail is ``limited``.
 MAX_DETAIL_BYTES = 8 * 1024 * 1024
-UNRESOLVED = "unresolved"
-_DECISION_FIELDS = frozenset(
-    {
-        "expected_epoch",
-        "expected_revision",
-        "capture_token",
-        "sha256",
-        "dependency_fingerprint",
-        "choice",
-    }
-)
 _CURSOR_SECRET = os.urandom(32)
 # The real path of a spelling; module-level so a test can fake a junction.
 _realpath = os.path.realpath
@@ -84,6 +77,7 @@ _STATUS = {
     "storage-changed": 409,
     "source-changed": 409,
     "capture-expired": 409,
+    "prompt-missing": 409,
 }
 _MESSAGES = {
     "review-missing": "This review item no longer exists. Reload the queue.",
@@ -95,6 +89,9 @@ _MESSAGES = {
         "sampler path cannot be attached safely. The existing links were "
         "preserved."
     ),
+    "prompt-missing": (
+        "That prompt or recipe is no longer in the Library. Search again."
+    ),
     "dependencies-changed": (
         "The image's saved links changed since this item was opened. Reopen it "
         "to see the current association."
@@ -251,6 +248,7 @@ class ReviewRoutesMixin:
         routes.get(ITEMS_URL)(self.list_review_items)
         routes.get(ITEMS_URL + "/{item_id}")(self.get_review_item)
         routes.post(ITEMS_URL + "/{item_id}/decision")(self.decide_review_item)
+        routes.post(ITEMS_URL + "/{item_id}/link")(self.link_review_item)
 
     # -- shared ----------------------------------------------------------------
 
@@ -464,6 +462,43 @@ class ReviewRoutesMixin:
         except JobBusy as busy:
             return busy_response(busy)
 
+    async def link_review_item(self, request: web.Request) -> web.Response:
+        """POST the Library prompt the reviewer chose for one pending item.
+
+        Under the same lease as a decision. The capture must be the item's
+        current bytes; the choice and the file's links are checked in the
+        decision's transaction.
+        """
+        try:
+            async with self._jobs.lease(REVIEW_DECISION_LEASE):
+                return await self._link_review_item(request)
+        except JobBusy as busy:
+            return busy_response(busy)
+
+    async def _link_review_item(self, request: web.Request) -> web.Response:
+        data, error = await self._read_json_body(request, max_bytes=MAX_BODY_BYTES)
+        if error is not None:
+            return error
+        guards, error = _link_guards(data)
+        if error is not None:
+            return error
+        try:
+            item = await self._run_in_executor(
+                self.db.review_item, request.match_info["item_id"]
+            )
+        except Exception:
+            self.logger.exception("Review item read failed")
+            return _failed()
+        if item is None:
+            return _coded("review-missing")
+        verified, error = await self._verified_review_capture(
+            item, guards, need_metadata=True
+        )
+        if error is not None:
+            return error
+        manual = {"positive_id": guards["positive_id"], "pair_id": guards["pair_id"]}
+        return await self._record_decision(item, guards, None, verified, manual)
+
     async def _decide_review_item(self, request: web.Request) -> web.Response:
         data, error = await self._read_json_body(request, max_bytes=MAX_BODY_BYTES)
         if error is not None:
@@ -549,22 +584,25 @@ class ReviewRoutesMixin:
             return None, _coded("file-changed")
         metadata = None
         if need_metadata:
-            if captured is None or not _candidate_still_offered(
-                captured[1], guards["choice"]
+            # A manual link has no ``choice``: it rests on the bytes alone.
+            if captured is None or (
+                "choice" in guards
+                and not _candidate_still_offered(captured[1], guards["choice"])
             ):
                 return None, _coded("review-conflict", "evidence-changed")
             metadata = captured[0]
         image_path = os.path.join(str(root), *relative.split("/"))
         return (capture, facts, image_path, metadata), None
 
-    def _decide_sync(self, item, guards, candidate, verified):
+    def _decide_sync(self, item, guards, candidate, verified, manual=None):
         """Worker thread: resolve the file's spellings, decide, build the view.
 
         Returns ``(result, view)``; a refusal raises with ``exc.view`` set.
         """
         _capture, facts, image_path, metadata = verified or (None, None, None, None)
         aliases, known = (), None
-        if candidate is not None:
+        selected = candidate is not None or manual is not None
+        if selected:
             aliases, known = physical_spellings(self.db, image_path, item["locator"])
         try:
             result = self.db.decide_review_item(
@@ -573,8 +611,9 @@ class ReviewRoutesMixin:
                 expected_revision=guards["expected_revision"],
                 # The bytes the re-hash proved, or the body's for Leave unresolved.
                 sha256=facts.sha256 if facts is not None else guards["sha256"],
-                outcome="selected" if candidate is not None else UNRESOLVED,
+                outcome="selected" if selected else UNRESOLVED,
                 candidate=candidate,
+                manual=manual,
                 image_path=image_path,
                 metadata=metadata,
                 expected_fingerprint=guards["dependency_fingerprint"],
@@ -589,11 +628,11 @@ class ReviewRoutesMixin:
         roots, real_roots = self._review_roots()
         return result, self._review_view(result["item"], roots, real_roots)
 
-    async def _record_decision(self, item, guards, candidate, verified):
+    async def _record_decision(self, item, guards, candidate, verified, manual=None):
         capture = verified[0] if verified else None
         try:
             result, view = await self._run_in_executor(
-                self._decide_sync, item, guards, candidate, verified
+                self._decide_sync, item, guards, candidate, verified, manual
             )
         except ReviewCommandError as exc:
             return self._decision_refused(exc)
@@ -629,36 +668,6 @@ class ReviewRoutesMixin:
         return _coded(exc.code, message, **extra)
 
 
-def _decision_guards(data: dict):
-    """The validated decision fields, or ``(None, error)``."""
-    if set(data) != _DECISION_FIELDS:
-        return None, bad_request(
-            "Request must contain exactly " + ", ".join(sorted(_DECISION_FIELDS))
-        )
-    epoch, revision = data["expected_epoch"], data["expected_revision"]
-    if not isinstance(epoch, str) or _UUID.fullmatch(epoch) is None:
-        return None, bad_request("expected_epoch must be a canonical UUID")
-    if type(revision) is not int or revision < 0:
-        return None, bad_request("expected_revision must be a non-negative integer")
-    token = data["capture_token"]
-    if token is not None and (
-        not isinstance(token, str) or _TOKEN.fullmatch(token) is None
-    ):
-        return None, bad_request("Invalid capture token")
-    for name in ("sha256", "dependency_fingerprint"):
-        value = data[name]
-        if not isinstance(value, str) or _HEX64.fullmatch(value) is None:
-            return None, bad_request(
-                f"{name} must be 64 lowercase hexadecimal characters"
-            )
-    choice = data["choice"]
-    if not isinstance(choice, str) or (
-        choice != UNRESOLVED and _HEX64.fullmatch(choice) is None
-    ):
-        return None, bad_request("choice must be a candidate hash or unresolved")
-    return {**data}, None
-
-
 def _verify_and_read(store, capture, item, root, need_metadata: bool):
     """Worker thread: ``(relative, facts, captured)``, or None off the root.
 

py/api/review_guards.py

@@ -0,0 +1,66 @@
+"""Body validation of Needs review decisions and manual links (#249 E3, #536)."""
+
+from .annotations import _HEX64, _TOKEN, _UUID
+from .prompts import bad_request
+
+UNRESOLVED = "unresolved"
+_GUARD_FIELDS = frozenset(
+    {
+        "expected_epoch",
+        "expected_revision",
+        "capture_token",
+        "sha256",
+        "dependency_fingerprint",
+    }
+)
+_DECISION_FIELDS = _GUARD_FIELDS | {"choice"}
+_LINK_FIELDS = _GUARD_FIELDS | {"positive_id", "pair_id"}
+
+
+def _guard_error(data: dict, fields: frozenset):
+    """The first problem with a decision's shared fields, as a response."""
+    if set(data) != fields:
+        return bad_request("Request must contain exactly " + ", ".join(sorted(fields)))
+    epoch, revision = data["expected_epoch"], data["expected_revision"]
+    if not isinstance(epoch, str) or _UUID.fullmatch(epoch) is None:
+        return bad_request("expected_epoch must be a canonical UUID")
+    if type(revision) is not int or revision < 0:
+        return bad_request("expected_revision must be a non-negative integer")
+    token = data["capture_token"]
+    if token is not None and (
+        not isinstance(token, str) or _TOKEN.fullmatch(token) is None
+    ):
+        return bad_request("Invalid capture token")
+    for name in ("sha256", "dependency_fingerprint"):
+        value = data[name]
+        if not isinstance(value, str) or _HEX64.fullmatch(value) is None:
+            return bad_request(f"{name} must be 64 lowercase hexadecimal characters")
+    return None
+
+
+def _decision_guards(data: dict):
+    """The validated decision fields, or ``(None, error)``."""
+    error = _guard_error(data, _DECISION_FIELDS)
+    if error is not None:
+        return None, error
+    choice = data["choice"]
+    if not isinstance(choice, str) or (
+        choice != UNRESOLVED and _HEX64.fullmatch(choice) is None
+    ):
+        return None, bad_request("choice must be a candidate hash or unresolved")
+    return {**data}, None
+
+
+def _link_guards(data: dict):
+    """The validated manual link fields, or ``(None, error)``."""
+    error = _guard_error(data, _LINK_FIELDS)
+    if error is not None:
+        return None, error
+    if data["capture_token"] is None:
+        return None, bad_request("A link needs a capture of the file")
+    positive, pair = data["positive_id"], data["pair_id"]
+    if type(positive) is not int or positive < 1:
+        return None, bad_request("positive_id must be a positive integer")
+    if pair is not None and (type(pair) is not int or pair < 1):
+        return None, bad_request("pair_id must be a positive integer or null")
+    return {**data}, None

py/api/review_recording.py

@@ -3,7 +3,7 @@
 The rule (maintainer test of #284/#288): a file is queued only when its
 final outcome is ambiguous and unlinked. The strict resolver must find it
 ``ambiguous``, the scan's legacy fallback (the browser parser,
-``_graph_prompt_text``) must not link it, and no saved row may link it
+``graph_prompt_text``) must not link it, and no saved row may link it
 already. A file the fallback links, an exact pair the ingester stored and an
 already linked file are never queued. Neither is an ambiguous file with
 nothing to choose: fewer than two of its candidates carry a prompt

py/api/settings_routes.py

@@ -8,7 +8,8 @@ is shared with the LoRA integration's save.
 GET also reports the image sources and the monitor (``sources.py``). A save
 that changes the sources runs as a ``source_change`` registry hold, so it is
 refused while a record-changing job (a scan) runs. ``monitoring_enabled``
-takes effect at the next restart. ``POST /prompt_manager/settings/validate-source``
+takes effect at the next restart; ``save_foreign_runs`` (#247) at once, since
+the monitor reads it for every file. ``POST /prompt_manager/settings/validate-source``
 checks one path and writes nothing.
 """
 
@@ -43,6 +44,7 @@ _SETTINGS_FILE_KEYS = {
     "INFINITE_SCROLL": ("web_ui", "infinite_scroll"),
     "WORKER_THREADS": ("performance", "worker_threads"),
     "MONITORING_ENABLED": ("gallery", "monitoring", "enabled"),
+    "SAVE_FOREIGN_RUNS": ("gallery", "monitoring", "save_foreign_runs"),
     "SAFETY_BACKUP": ("maintenance", "safety_backup"),
     "THUMBNAIL_FORMAT": ("thumbnails", "format"),
     "THUMBNAIL_QUALITY": ("thumbnails", "quality"),
@@ -58,7 +60,7 @@ _SETTINGS_FILE_KEYS = {
 # The thumbnail settings a running Convert outdated job fixes (#317).
 _THUMBNAIL_SETTINGS = ("THUMBNAIL_FORMAT", "THUMBNAIL_QUALITY", "THUMBNAIL_EDGE")
 # Attributes that live on GalleryConfig; the others on PromptManagerConfig.
-_GALLERY_SETTINGS = frozenset({"MONITORING_ENABLED"})
+_GALLERY_SETTINGS = frozenset({"MONITORING_ENABLED", "SAVE_FOREIGN_RUNS"})
 # Attributes that live on AutotagConfig, named without the AUTOTAG_ prefix.
 _AUTOTAG_SETTINGS = frozenset(
     name for name in _SETTINGS_FILE_KEYS if name.startswith("AUTOTAG_")
@@ -264,6 +266,7 @@ class SettingsRoutesMixin:
                     "thumbnail_encoders": encoders,
                     "settings": {
                         "monitoring_enabled": GalleryConfig.MONITORING_ENABLED,
+                        "save_foreign_runs": GalleryConfig.SAVE_FOREIGN_RUNS,
                         "result_timeout": PromptManagerConfig.RESULT_TIMEOUT,
                         "webui_display_mode": PromptManagerConfig.WEBUI_DISPLAY_MODE,
                         "infinite_scroll": PromptManagerConfig.INFINITE_SCROLL,
@@ -626,6 +629,10 @@ class SettingsRoutesMixin:
             if not isinstance(data["monitoring_enabled"], bool):
                 raise ValueError("monitoring_enabled must be true or false")
             updates["MONITORING_ENABLED"] = data["monitoring_enabled"]
+        if "save_foreign_runs" in data:
+            if not isinstance(data["save_foreign_runs"], bool):
+                raise ValueError("save_foreign_runs must be true or false")
+            updates["SAVE_FOREIGN_RUNS"] = data["save_foreign_runs"]
         if "safety_backup" in data:
             if not isinstance(data["safety_backup"], bool):
                 raise ValueError("safety_backup must be true or false")

py/api/source_rescope.py

@@ -0,0 +1,107 @@
+"""Where a stale Images target is now (#430): ``POST /prompt_manager/images/rescope``.
+
+A page addresses a listed file as ``{root_index, root_scope, path}``. When the
+sources are renumbered its scope no longer names the root at that index, and
+every per-file action answers 409 ``source-changed``. Before it gives up, the
+page asks here. The target is mapped only when its scope is, at its old
+index, the scope of one of the current roots: the server issued that scope
+for exactly that folder, so the answer (the file's current listing
+descriptor) names nothing the page could not already address. A removed or
+replaced root, a scope of another key and a foreign scope stay refused.
+
+Only the Images roots (``_get_all_output_dirs``) are mapped; a LoRA-linked
+root's target is never re-scoped here.
+"""
+
+import hmac
+from pathlib import Path
+
+from aiohttp import web
+
+from .images import (
+    _forbidden,
+    _is_thumbnail_cache_path,
+    _json_body_or_error,
+    _media_access_error,
+)
+from .media_target import media_target
+from .prompts import bad_request
+
+# Far above any real source count; keeps the index out of huge-int territory.
+MAX_ROOT_INDEX = 4095
+SOURCE_GONE = (
+    "The source of this image changed or was removed. Refresh the image "
+    "collection to find it again."
+)
+
+
+def _coded(status: int, code: str, message: str) -> web.Response:
+    return web.json_response(
+        {"success": False, "code": code, "error": message}, status=status
+    )
+
+
+def _missing_if_not_found(response: web.Response) -> web.Response:
+    """A file in a trash folder answers as a missing file does (#543)."""
+    if response.status == 404:
+        return _coded(404, "file-missing", "Image file not found")
+    return response
+
+
+def _no_store(response: web.Response) -> web.Response:
+    response.headers["Cache-Control"] = "no-store"
+    return response
+
+
+class SourceRescopeMixin:
+    """The rescope route; composed into ``PromptManagerAPI``."""
+
+    def _register_rescope_routes(self, routes):
+        @routes.post("/prompt_manager/images/rescope")
+        async def rescope_route(request):
+            return _no_store(await self.rescope_image(request))
+
+    def _current_root_for(self, scope: str, old_index: int, roots: list) -> int | None:
+        """The index of the first current root *scope* was issued for at *old_index*."""
+        for index, root in enumerate(roots):
+            if hmac.compare_digest(scope, self._gallery_root_scope(root, old_index)):
+                return index
+        return None
+
+    def _rescope_blocking(self, scope: str, old_index: int, relative: str):
+        """The answer to one rescope (blocking: it resolves paths)."""
+        roots = list(self._get_all_output_dirs())
+        index = self._current_root_for(scope, old_index, roots)
+        if index is None:
+            return _coded(409, "source-changed", SOURCE_GONE)
+        root = Path(roots[index])
+        path = root / relative
+        denied = _media_access_error(path, [root])
+        if denied is not None:
+            return _missing_if_not_found(denied)
+        try:
+            mtime = path.stat().st_mtime if path.is_file() else None
+        except OSError:
+            mtime = None
+        if mtime is None:
+            return _coded(404, "file-missing", "Image file not found")
+        [image] = self._format_workspace_page([(path, mtime, root, index)])
+        return web.json_response({"success": True, "image": image})
+
+    async def rescope_image(self, request) -> web.Response:
+        data, error = await _json_body_or_error(request)
+        if error is not None:
+            return error
+        if set(data) != {"target"}:
+            return bad_request("Send exactly one target")
+        target, error = media_target(data["target"])
+        if error is not None:
+            return _missing_if_not_found(error)
+        old_index, scope, relative = target
+        if old_index > MAX_ROOT_INDEX:
+            return bad_request("Invalid gallery root")
+        if _is_thumbnail_cache_path(relative):
+            return _forbidden("Previews are not re-scoped; use the original")
+        return await self._run_in_executor(
+            self._rescope_blocking, scope, old_index, relative
+        )

py/api/thumbnail_auto.py

@@ -67,6 +67,7 @@ from aiohttp import web
 
 from . import thumbnail_settings
 from .images import (
+    in_trash_below_roots,
     MEDIA_EXTENSIONS,
     THUMBNAIL_CLEAR_TITLE,
     VIDEO_EXTENSIONS,
@@ -224,6 +225,8 @@ def _quick_source(root, parts):
         for name in (base + extension, base + extension.upper()):
             path = folder / name
             if _regular_file(path) and _is_within(path, root):
+                if in_trash_below_roots(path, [root]):
+                    return None  # also the fallback past the gate's cap (#543)
                 return path, extension in VIDEO_EXTENSIONS
     return None
 
@@ -248,6 +251,8 @@ def _thumbnail_source(root, parts):
         found = _scan_folder(root.joinpath(*folder_parts), base, set(wanted))
         if found is None or not _is_within(found, root):
             return None
+    if in_trash_below_roots(found, [root]):
+        return None
     rel = Path(*folder_parts, found.name)
     dst = root / media_thumbnail_rel(rel)
     if dst != _current_preview(root, parts):
@@ -835,7 +840,7 @@ class AutoThumbnailMixin:
             if not folded.startswith(base) or not _is_within(path, root):
                 continue
             rel = Path(os.path.relpath(path, root))
-            if "thumbnails" in rel.parts[:-1]:
+            if "thumbnails" in rel.parts[:-1] or in_trash_below_roots(path, [root]):
                 return None
             dst = root / media_thumbnail_rel(rel)
             if not _is_within(root / "thumbnails", root) or not _is_within(

py/api/vocabulary.py

@@ -61,18 +61,25 @@ class VocabularyRoutesMixin:
         )
 
     async def _vocabulary_page(
-        self, request: web.Request, kind: str, reader_name: str, name: bool
+        self,
+        request: web.Request,
+        kind: str,
+        reader_name: str,
+        name: bool,
+        options: dict | None = None,
     ) -> web.Response:
         limit = _vocabulary_limit(request)
         cursor = request.query.get("cursor")
+        options = options or {}
 
         def read() -> dict:
             # The snapshot stays open while the cursor is decoded and encoded,
-            # so its epoch scope is the epoch the page was read from.
+            # so its epoch scope is the epoch the page was read from. A tag
+            # search or sort joins the scope: its cursor fits no other order.
             with self.db.library_snapshot() as (conn, epoch, _ceiling):
-                scope = _scope({"kind": kind, "epoch": epoch})
+                scope = _scope({"kind": kind, "epoch": epoch, **options})
                 result = getattr(self.db, reader_name)(
-                    conn, epoch, limit=limit, after=_decode(cursor, scope)
+                    conn, epoch, limit=limit, after=_decode(cursor, scope), **options
                 )
                 result["next_cursor"] = _encode(
                     result.pop("next_key"), scope, name=name
@@ -84,8 +91,14 @@ class VocabularyRoutesMixin:
 
     @pair_response
     async def list_vocabulary_tags(self, request: web.Request) -> web.Response:
+        options = {
+            "search": request.query.get("search", "").strip(),
+            "sort": request.query.get("sort", "created"),
+        }
+        # Name keys are text: kept server side so the cursor stays small.
+        name = options["sort"].startswith("name")
         return await self._vocabulary_page(
-            request, "vocabulary-tags", "_vocabulary_tags", False
+            request, "vocabulary-tags", "_vocabulary_tags", name, options
         )
 
     @pair_response