AI sections fall back to fetch with no Qt bridge, for non-React web frontends

ai_sections.html fetches {API_BASE}+path when window.qt is absent; a page-check case routes those requests to server_stub.dispatch(). AI SKILL.md step 6 and frontend.md send plain-HTML/Vue/Angular/Svelte projects to it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/README.md

@@ -40,6 +40,10 @@ uv run --with pytest --with playwright pytest tests
   does). Runs the AI web page's review and cost cases and the no-AI cases unchanged, plus
   a tampered page calling the slot directly (still refused). To check a generated folder,
   set `PAGE_CHECK_AI_DESKTOP_DIR=path/to/dashboard`; `PAGE_CHECK_WIRED=1` as above.
+  `test_ai_fetch.py` runs the review cases on the same page with no Qt bridge (a plain-HTML
+  web project): the AI sections fetch `/api/...`, routed to `server_stub.dispatch()`.
+- `page_check_common.py`: what the three page checks share (modes, test fill, fake Qt
+  bridge, stub loader, page opener, the list of no-AI cases the AI pages rerun).
 - `test_pricing.py`: the AI cost function (normal, long-context, thinking tokens,
   unknown model).
 - `test_reference_scan.py`: no patient data, internal IPs, credentials or keys in any