Resolve remaining ComfyUI integration conflicts

- Move the read-only OpenAPI compat surface from /api/v2/assets to
  /mjr/am/compat/assets so it never squats ComfyUI core's /api namespace;
  the legacy alias is opt-in via MJR_AM_LEGACY_API_V2_ASSETS=1.
- Allow Python 3.14 (requires-python <3.15) and add 3.14 to CI and tox.
- Stop wrapping api.queuePrompt: progress tracking now resolves the
  running prompt from the core Jobs API (getJobDetail), then /queue and
  /history, driven by websocket events. Remove wrapHostQueuePrompt.
- Add opt-in Majoor.Integration.HideNativeAssetsTab setting that hides
  ComfyUI's native Assets sidebar tab through the official
  getSidebarTabs/unregisterSidebarTab API and restores it when disabled.
- Fix all 913 type errors in tsconfig.test.json and type-check tests in
  CI; drop a duplicated `stubs` key in asset_card_inner test; make
  addToastHistory's type argument optional for the object form.
- Update audit report, changelog, API reference and env var docs.

.github/workflows/python-tests.yml

@@ -96,6 +96,9 @@ jobs:
       - name: Typecheck frontend
         run: npx tsc -p tsconfig.json --noEmit --pretty false
 
+      - name: Typecheck frontend tests
+        run: npx tsc -p tsconfig.test.json --noEmit --pretty false
+
       - name: Build frontend bundle
         run: npm run build
 
@@ -119,7 +122,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
     steps:
       - name: Tune Git HTTP settings
         run: |