feat(h5): FastAPI StaticFiles 同源托管 /h5(.html no-cache)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/test_h5_hosting.py

@@ -0,0 +1,14 @@
+"""H5 静态托管冒烟:/h5 同源服务页面 + .html no-cache(热更核心)。"""
+from __future__ import annotations
+
+
+def test_h5_shared_bridge_served(client) -> None:
+    resp = client.get("/h5/shared/bridge.js")
+    assert resp.status_code == 200
+
+
+def test_h5_html_no_cache(client) -> None:
+    # records 迁入前,先用已在仓库的 mine 页验证 .html 的 no-cache 响应头
+    resp = client.get("/h5/mine/index.html")
+    assert resp.status_code == 200
+    assert resp.headers.get("cache-control") == "no-cache"