PROPER FIX: Remove default /metadata route before registering custom override with tasks

server/app.py

@@ -19,7 +19,13 @@ app = create_fastapi_app(
     ConfigDebugObservation,       # observation model (inherits Observation)
 )
 
-
+# ---- Override OpenEnv's default /metadata route ----
+# Remove the built-in metadata endpoint so we can replace it with task enumeration
+for i, route in enumerate(app.router.routes):
+    if hasattr(route, "path") and route.path == "/metadata":
+        app.router.routes.pop(i)
+        print("[APP_INIT] Removed default /metadata route for override")
+        break
 
 
 # ---- Custom endpoints ----
@@ -55,7 +61,8 @@ def debug():
 
 @app.get("/metadata")
 def metadata():
-    """OpenEnv metadata endpoint with task enumeration for validator discovery."""
+    """Override OpenEnv metadata endpoint with task enumeration for validator discovery."""
+    print("[VALIDATOR] GET /metadata called")
     return {
         "name": "ConfigDebugEnvironment",
         "description": "An RL environment for training AI agents to debug broken configuration files",