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/editorStore.ts

@@ -4,17 +4,32 @@ import type { ViewMode } from '../types/settings'
 interface EditorState {
   viewMode: ViewMode
   darkMode: boolean
+  // AR-03: 外部修改检测状态，替代 DOM CustomEvent
+  externallyModified: { filePath: string } | null
+  // UX-02: 全局加载状态
+  loadingStates: Record<string, boolean>
 
   setViewMode: (mode: ViewMode) => void
   setDarkMode: (dark: boolean) => void
   toggleDarkMode: () => void
+  setExternallyModified: (info: { filePath: string } | null) => void
+  // UX-02: 加载状态管理
+  setLoading: (key: string, loading: boolean) => void
+  isLoading: (key: string) => boolean
 }
 
-export const useEditorStore = create<EditorState>((set) => ({
+export const useEditorStore = create<EditorState>((set, get) => ({
   viewMode: 'editor',
   darkMode: false,
+  externallyModified: null,
+  loadingStates: {},
 
-  setViewMode: (mode) => set({ viewMode: mode }),
-  setDarkMode: (dark) => set({ darkMode: dark }),
-  toggleDarkMode: () => set(state => ({ darkMode: !state.darkMode }))
+  setViewMode: (mode: ViewMode) => set({ viewMode: mode }),
+  setDarkMode: (dark: boolean) => set({ darkMode: dark }),
+  toggleDarkMode: () => set(state => ({ darkMode: !state.darkMode })),
+  setExternallyModified: (info: { filePath: string } | null) => set({ externallyModified: info }),
+  setLoading: (key: string, loading: boolean) => set(state => ({
+    loadingStates: { ...state.loadingStates, [key]: loading }
+  })),
+  isLoading: (key: string) => get().loadingStates[key] ?? false
 }))