feat(sources): admin page to add and remove git sources (TODO.md L4)

app/core/caching.py

@@ -111,7 +111,10 @@ def asset_version(static_dir: str | None = None) -> str:
 # Response-layer cache busting (task 02)
 # ---------------------------------------------------------------------------
 
-#: The five known HTML pages — the ONLY paths whose body is rewritten.
+#: The known HTML pages — the ONLY paths whose body is rewritten.
+#: Phase 35 adds the admin git sources page: without this entry it
+#: would serve unversioned asset refs, which the immutable-for-a-year
+#: asset caching would pin to stale CSS after a deploy.
 HTML_PAGES: tuple[str, ...] = (
     "/",
     "/index.html",
@@ -119,6 +122,7 @@ HTML_PAGES: tuple[str, ...] = (
     "/document.html",
     "/login.html",
     "/tuning.html",
+    "/git-sources.html",  # phase 35: the admin git sources page
 )
 
 #: Prefix of the versioned static assets (header-only caching; the body is