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/page_check_ai_desktop/test_ai_fetch.py

@@ -0,0 +1,54 @@
+"""The same AI sections with no Qt bridge: a plain-HTML (or Vue/Angular) web project.
+
+The page is served over HTTP with API_BASE "/api", and every AI request goes out as
+fetch({API_BASE}{path}). Playwright routes the API to the review backend's dispatch()
+in this process (what a real backend serves; server_stub.py over HTTP does the same).
+This module's `page` replaces the folder's bridge one; the review cases run unchanged.
+"""
+import json
+import sys
+from pathlib import Path
+
+import pytest
+from page_check_common import MODES, open_page
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "page_check_ai"))
+from test_ai_review import (  # noqa: E402,F401
+    test_approve_stays_blocked_while_rows_are_unverified,
+    test_band_counts_and_legend_match,
+    test_band_filters_show_the_right_rows,
+    test_draft_edit_is_not_saved_until_save,
+    test_page_x_of_y_updates_while_running,
+)
+from test_ai_cost import cost_page, test_coverage_pill_counts_priced_of_all_documents  # noqa: E402,F401
+
+ORIGIN = "http://dashboard.test"
+NO_BRIDGE = "window.__calls = [];"
+
+
+@pytest.fixture(params=list(MODES))
+def page(request, browser, site, stub):
+    html = (site / "dashboard.html").read_text(encoding="utf-8").replace(
+        'const API_BASE = "";', 'const API_BASE = "/api";')
+
+    def serve(route):
+        path = route.request.url[len(ORIGIN):].split("?")[0]
+        if not path.startswith("/api/"):
+            return route.fulfill(body=html, content_type="text/html")
+        body = json.loads(route.request.post_data or "{}")
+        status, payload = stub.dispatch(route.request.method, path[len("/api"):], body)
+        if isinstance(payload, str):
+            return route.fulfill(status=status, body=payload, content_type="image/svg+xml")
+        route.fulfill(status=status, body=json.dumps(payload), content_type="application/json")
+
+    yield from open_page(browser, ORIGIN + "/dashboard.html", request.param, NO_BRIDGE,
+                         route=(ORIGIN + "/**", serve))
+
+
+def test_ai_requests_go_over_fetch(page, stub):
+    """With no Qt bridge, nothing reaches a bridge slot: the review loads over HTTP."""
+    from test_ai_review import FIELDS, open_review
+    stub.put_run("job-f", "fetch.pdf", FIELDS)
+    open_review(page, "job-f")
+    assert page.evaluate("window.__calls") == []
+    assert page.locator("#rv-doc").get_attribute("src") == "/api/runs/job-f/document"