diff --git a/routes/umbrella.py b/routes/umbrella.py
index 90c473b..2dda0d6 100644
--- a/routes/umbrella.py
+++ b/routes/umbrella.py
@@ -26,12 +26,18 @@ def _repo_root() -> Path:
 
 
 def register(api):
-    """Wire umbrella panel + APIs."""
+    """Wire umbrella panel + APIs.
+
+    Note: the panel HTML lives at /plugins/svrnty/umbrella.html (served via
+    register_static). The /umbrella top-level route would require a non-/api/
+    handler, which the plugin loader doesn't allow (see SVRNTY-PLUGIN-PROTOCOL
+    §5.1 — register_route only accepts /api/*). Frontend nav links directly to
+    /plugins/svrnty/umbrella.html.
+    """
     log = api.logger("svrnty.routes.umbrella")
-    api.register_route("/umbrella", "GET", _handle_panel_html)
     api.register_route("/api/umbrella", "GET", _handle_graph_json)
     api.register_route("/api/umbrella/doc", "GET", _handle_doc_body)
-    log.info("umbrella panel + APIs registered")
+    log.info("umbrella APIs registered")
 
 
 def _send(handler, status: int, body: bytes, content_type: str) -> None:
@@ -101,11 +107,3 @@ def _handle_doc_body(handler, parsed) -> bool:
     }).encode("utf-8")
     _send(handler, 200, body, "application/json; charset=utf-8")
     return True
-
-
-def _handle_panel_html(handler, parsed) -> bool:
-    """Serve the static umbrella.html via Location redirect (assets live in static/)."""
-    handler.send_response(302)
-    handler.send_header("Location", "/plugins/svrnty/umbrella.html")
-    handler.end_headers()
-    return True