- feat(vscode-sync): restore auto-sync logic and enable by default

- refactor(settings): remove the VS Code auto-sync toggle from Settings UI
- feat(provider-list): enable auto-sync after "Apply to VS Code"; disable after "Remove"
- chore(prettier): run Prettier on changed files
- verify: typecheck and renderer build pass

- Files
  - added: src/hooks/useVSCodeAutoSync.ts
  - modified: src/App.tsx
  - modified: src/components/ProviderList.tsx
  - modified: src/components/SettingsModal.tsx

- Notes
  - Auto-sync now defaults to enabled for new users (stored in localStorage; existing saved state is respected).
  - No settings toggle is shown; manual Apply/Remove in the list still works as before.

src/hooks/useVSCodeAutoSync.ts

@@ -4,7 +4,8 @@ const VSCODE_AUTO_SYNC_KEY = "vscode-auto-sync-enabled";
 const VSCODE_AUTO_SYNC_EVENT = "vscode-auto-sync-changed";
 
 export function useVSCodeAutoSync() {
-  const [isAutoSyncEnabled, setIsAutoSyncEnabled] = useState<boolean>(false);
+  // 默认开启自动同步；若本地存储存在记录，则以记录为准
+  const [isAutoSyncEnabled, setIsAutoSyncEnabled] = useState<boolean>(true);
 
   // 从 localStorage 读取初始状态
   useEffect(() => {
@@ -22,7 +23,9 @@ export function useVSCodeAutoSync() {
   useEffect(() => {
     const onCustom = (e: Event) => {
       try {
-        const detail = (e as CustomEvent).detail as { enabled?: boolean } | undefined;
+        const detail = (e as CustomEvent).detail as
+          | { enabled?: boolean }
+          | undefined;
         if (detail && typeof detail.enabled === "boolean") {
           setIsAutoSyncEnabled(detail.enabled);
         } else {
@@ -42,7 +45,10 @@ export function useVSCodeAutoSync() {
     window.addEventListener(VSCODE_AUTO_SYNC_EVENT, onCustom as EventListener);
     window.addEventListener("storage", onStorage);
     return () => {
-      window.removeEventListener(VSCODE_AUTO_SYNC_EVENT, onCustom as EventListener);
+      window.removeEventListener(
+        VSCODE_AUTO_SYNC_EVENT,
+        onCustom as EventListener,
+      );
       window.removeEventListener("storage", onStorage);
     };
   }, []);