feat(review): supersede stale items and inspect each file state once

A semantics table or resolver version change no longer leaves two pending
items for one file. A new item supersedes the other items of the same bytes
when every one is pending and undecided (revision 0, no decision row, the
self-heal's safe delete). Beside a decided or advanced item nothing new is
stored, and the rescan's stat shortcut skips those bytes under any version.

The inspection item version now folds a narrower fingerprint: the table
restricted to the graph's node classes plus its class-independent parts, so
an edit about other classes leaves every item alone.

The inspection profile runs once per file state. The scan resolves the
untraced file at batch level, skips files already queued or decided at their
current size and mtime under their version, and remembers files it found
untraced in this process. The capture reuses the scan's result when it holds
the same records.

tests/test_api_admin.py

@@ -2243,7 +2243,12 @@ class TestActivityJobs(AdminAPITestCase):
             (self.output_dir / name).write_bytes(b"not an image")
 
         def fake_ingest(
-            media_file, metadata, detailed=False, ambiguous=None, untraced=None
+            media_file,
+            metadata,
+            detailed=False,
+            ambiguous=None,
+            untraced=None,
+            records=None,
         ):
             key = Path(media_file).relative_to(self.output_dir).as_posix()
             outcome = names[key]