Add MCP proxy address config support, better error messages

client/src/main.tsx

@@ -4,10 +4,13 @@ import { ToastContainer } from "react-toastify";
 import "react-toastify/dist/ReactToastify.css";
 import App from "./App.tsx";
 import "./index.css";
+import { TooltipProvider } from "./components/ui/tooltip.tsx";
 
 createRoot(document.getElementById("root")!).render(
   <StrictMode>
-    <App />
-    <ToastContainer />
+    <TooltipProvider>
+      <App />
+      <ToastContainer />
+    </TooltipProvider>
   </StrictMode>,
 );