chore: update version and enhance dashboard components

- Add a warning message for Windows users in AntigravityToolCard to run the terminal as Administrator for MITM functionality.
- Refactor model testing logic in ProviderDetailPage to improve state management and user experience.
- Introduce new version notification in Sidebar for available updates.

src/shared/components/Sidebar.js

@@ -32,6 +32,7 @@ export default function Sidebar({ onClose }) {
   const [isShuttingDown, setIsShuttingDown] = useState(false);
   const [isDisconnected, setIsDisconnected] = useState(false);
   const [showDebug, setShowDebug] = useState(false);
+  const [updateInfo, setUpdateInfo] = useState(null);
 
   // Check if debug mode is enabled
   useEffect(() => {
@@ -41,6 +42,14 @@ export default function Sidebar({ onClose }) {
       .catch(() => {});
   }, []);
 
+  // Lazy check for new npm version on mount
+  useEffect(() => {
+    fetch("/api/version")
+      .then(res => res.json())
+      .then(data => { if (data.hasUpdate) setUpdateInfo(data); })
+      .catch(() => {});
+  }, []);
+
   const isActive = (href) => {
     if (href === "/dashboard/endpoint") {
       return pathname === "/dashboard" || pathname.startsWith("/dashboard/endpoint");
@@ -71,7 +80,7 @@ export default function Sidebar({ onClose }) {
         </div>
 
         {/* Logo */}
-        <div className="px-6 py-4">
+        <div className="px-6 py-4 flex flex-col gap-2">
           <Link href="/dashboard" className="flex items-center gap-3">
             <div className="flex items-center justify-center size-9 rounded bg-linear-to-br from-[#f97815] to-[#c2590a]">
               <span className="material-symbols-outlined text-white text-[20px]">hub</span>
@@ -83,6 +92,16 @@ export default function Sidebar({ onClose }) {
               <span className="text-xs text-text-muted">v{APP_CONFIG.version}</span>
             </div>
           </Link>
+          {updateInfo && (
+            <div className="flex flex-col gap-0.5">
+              <span className="text-xs font-semibold text-green-600 dark:text-amber-500">
+                ↑ New version available: v{updateInfo.latestVersion}
+              </span>
+              <code className="text-[10px] text-green-600/80 dark:text-amber-400/70 font-mono select-all">
+                npm install -g 9router@latest
+              </code>
+            </div>
+          )}
         </div>
 
         {/* Navigation */}