v0.2.0: 全面代码质量优化

- ESLint flat config + Prettier + EditorConfig
- Markdown处理器LRU缓存
- Zustand选择器优化减少重渲染
- CodeMirror Compartment主题热切换
- Preview防抖(150ms) + IndexedDB去抖(500ms)
- 组件拆分: App.tsx 310→104行, Sidebar.tsx 244→90行
- 统一错误处理 errorHandler.ts
- ConfirmDialog替代原生confirm
- LoadingSpinner加载状态
- Toast多条堆叠+类型区分
- 可访问性增强(ARIA属性、键盘导航)
- Vitest测试框架(78个测试用例)
- Git hooks(husky + lint-staged)
- 项目文档(README.md, CONTRIBUTING.md)

src/renderer/stores/sidebarStore.ts

@@ -16,6 +16,7 @@ interface SidebarState {
   toggleDir: (path: string) => void
   expandDirs: (paths: string[]) => void
   setSidebarWidth: (width: number) => void
+  /** @deprecated AR-04: 设置由 useSettingsInit 统一加载，此方法仅作兼容保留 */
   loadFromDB: () => Promise<void>
 }
 
@@ -27,7 +28,7 @@ export const useSidebarStore = create<SidebarState>((set, get) => ({
   sidebarWidth: 240,
   _loaded: false,
 
-  // 从 IndexedDB 加载 sidebar 设置
+  // AR-04: 设置由 useSettingsInit 统一加载
   loadFromDB: async () => {
     if (get()._loaded) return
     try {
@@ -42,29 +43,27 @@ export const useSidebarStore = create<SidebarState>((set, get) => ({
     }
   },
 
-  setVisible: (visible) => {
+  setVisible: (visible: boolean) => {
     set({ isVisible: visible })
-    // 异步保存到 DB
     settingsRepository.save({ sidebarCollapsed: !visible })
   },
-  setRootPath: (path) => set({ rootPath: path }),
-  setTree: (tree) => set({ tree }),
-  toggleDir: (path) =>
+  setRootPath: (path: string | null) => set({ rootPath: path }),
+  setTree: (tree: FileNode[]) => set({ tree }),
+  toggleDir: (path: string) =>
     set(state => ({
       expandedDirs: state.expandedDirs.includes(path)
         ? state.expandedDirs.filter(p => p !== path)
         : [...state.expandedDirs, path]
     })),
-  expandDirs: (paths) =>
+  expandDirs: (paths: string[]) =>
     set(state => {
       const newDirs = paths.filter(p => !state.expandedDirs.includes(p))
       return newDirs.length > 0
         ? { expandedDirs: [...state.expandedDirs, ...newDirs] }
         : state
     }),
-  setSidebarWidth: (width) => {
+  setSidebarWidth: (width: number) => {
     set({ sidebarWidth: width })
-    // 异步保存到 DB
     settingsRepository.save({ sidebarWidth: width })
   }
 }))