chore: bump version to 3.9.0-beta.1

- Update version in package.json, Cargo.toml, tauri.conf.json
- Add CHANGELOG entry for v3.9.0-beta.1 with:
  - Local Proxy Server feature
  - Auto Failover with circuit breaker
  - Skills multi-app support
  - Provider icon colors
  - 25+ bug fixes
- Add proxy feature guide documentation (Chinese)

src/components/proxy/ProxyToggle.tsx

@@ -19,13 +19,8 @@ interface ProxyToggleProps {
 
 export function ProxyToggle({ className, activeApp }: ProxyToggleProps) {
   const { t } = useTranslation();
-  const {
-    isRunning,
-    takeoverStatus,
-    setTakeoverForApp,
-    isPending,
-    status,
-  } = useProxyStatus();
+  const { isRunning, takeoverStatus, setTakeoverForApp, isPending, status } =
+    useProxyStatus();
 
   const handleToggle = async (checked: boolean) => {
     await setTakeoverForApp({ appType: activeApp, enabled: checked });