Update app.py

app.py

@@ -369,7 +369,15 @@ async def mobile_chat(request: dict):
 # CREATE ROOT APP (FastAPI) AND MOUNT BOTH UI + API
 # ============================================================
 root_app = FastAPI()
-
+from datetime import datetime
+
+@root_app.get("/health")
+def health_check():
+    return {
+        "status": "ok",
+        "service": "ct-chat",
+        "timestamp": datetime.utcnow().isoformat()
+    }
 # Mount /api → FastAPI backend
 root_app.mount("/api", proxy_api)