Add backend error logging and increase frontend timeout

backend/app/main.py

@@ -128,6 +128,15 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
+import logging
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
+@app.exception_handler(Exception)
+async def global_exception_handler(request, exc):
+    logger.error(f"Global error: {exc}", exc_info=True)
+    return {"detail": "Internal Server Error", "message": str(exc)}
+
 # Ensure upload directories exist
 for sub in ["profiles", "vehicles", "businesses"]:
     os.makedirs(os.path.join("uploads", sub), exist_ok=True)