refactor: 移除自定义状态栏 — 使用 MetonaEditor 自带底栏

- editor 自带底栏（wordCount: true）已显示字符数/词数/行数/阅读时间
- 删除自定义 StatusBar 组件、editorStore 的 stats/cursor 状态与事件绑定
- 保留 zenMode 同步（Toolbar 专注按钮消费）；自动保存状态由 Toolbar 按钮显示

src/renderer/App.tsx

@@ -14,7 +14,6 @@ import { useIpcListeners } from './hooks/useIpcListeners'
 import { MeToast } from './lib/toast'
 import { closeDatabase } from './db/schema'
 import { Toolbar } from './components/Toolbar/Toolbar'
-import { StatusBar } from './components/StatusBar'
 import { TabBar } from './components/TabBar/TabBar'
 import { Editor } from './components/Editor/Editor'
 import { Sidebar } from './components/Sidebar/Sidebar'
@@ -126,7 +125,6 @@ export function App() {
             )}
           </div>
         </div>
-        <StatusBar />
         <DropOverlay />
         {showAbout && <AboutDialog onClose={handleCloseAbout} />}
       </div>

src/renderer/components/Editor/Editor.tsx

@@ -56,8 +56,6 @@ export const Editor = React.memo(function Editor({ themeMode, onAppSave }: Edito
   const updateTabScroll = useTabStore(s => s.updateTabScroll)
   const viewMode = useEditorStore(s => s.viewMode)
   const setViewMode = useEditorStore(s => s.setViewMode)
-  const setStats = useEditorStore(s => s.setStats)
-  const setCursor = useEditorStore(s => s.setCursor)
   const setZenMode = useEditorStore(s => s.setZenMode)
 
   const containerRef = useRef<HTMLDivElement>(null)
@@ -197,38 +195,12 @@ export const Editor = React.memo(function Editor({ themeMode, onAppSave }: Edito
     // 首次渲染后延迟触发一次
     setTimeout(renderMermaid, 300)
 
-    // v0.6.0: 实时状态同步 — getStats + 光标/zen 事件 → editorStore（状态栏消费）
-    const syncStats = () => {
-      try {
-        const s = editor.getStats()
-        setStats({
-          characters: s.characters,
-          words: s.words,
-          chineseChars: s.chineseChars,
-          englishWords: s.englishWords,
-          lines: s.lines,
-          readingTime: s.readingTime,
-        })
-      } catch {
-        /* 容错 */
-      }
-    }
-    const syncCursor = (pos?: { line: number; column: number }) => {
-      try {
-        setCursor(pos ?? editor.getCursorPosition())
-      } catch {
-        /* 容错 */
-      }
-    }
+    // v0.6.0: Zen 状态同步 → editorStore（Toolbar 消费）
+    // 文档统计由编辑器自带底栏展示（wordCount: true），无需应用层同步
     const syncZen = (zen: boolean) => {
       setZenMode(Boolean(zen))
     }
-    editor.on('change', syncStats)
-    editor.on('input', syncStats)
-    editor.on('cursorMove', syncCursor)
     editor.on('zenChange', syncZen)
-    syncStats()
-    syncCursor()
 
     return () => {
       editor.destroy()

src/renderer/components/StatusBar/StatusBar.tsx

@@ -1,38 +0,0 @@
-import React from 'react'
-import { useEditorStore } from '../../stores/editorStore'
-import { useAutoSaveStore } from '../../stores/autoSaveStore'
-
-/**
- * v0.6.0: 状态栏 — 展示文档统计 / 光标位置 / 自动保存状态。
- * 数据来自 editorStore（Editor 组件绑定 MetonaEditor 事件实时写入）。
- */
-export const StatusBar = React.memo(function StatusBar() {
-  const stats = useEditorStore(s => s.stats)
-  const cursor = useEditorStore(s => s.cursor)
-  const zenMode = useEditorStore(s => s.zenMode)
-  const isAutoSaving = useAutoSaveStore(s => s.isAutoSaving)
-  const autoSaveEnabled = useAutoSaveStore(s => s.autoSaveEnabled)
-
-  return (
-    <footer id="statusbar" role="status" aria-label="状态栏">
-      {zenMode && <span className="statusbar-item statusbar-zen">🧘 Zen</span>}
-      {stats && (
-        <span className="statusbar-item" title="字数 / 词数 / 行数 / 阅读时间">
-          {stats.words} 词 · {stats.lines} 行 · {stats.readingTime} 分钟
-        </span>
-      )}
-      <span className="statusbar-spacer" />
-      {cursor && (
-        // getCursorPosition: line 为 1-based，column 为 0-based
-        <span className="statusbar-item">
-          行 {cursor.line}, 列 {cursor.column + 1}
-        </span>
-      )}
-      <span className={`statusbar-item statusbar-autosave${isAutoSaving ? ' saving' : ''}`}>
-        {isAutoSaving ? '保存中...' : autoSaveEnabled ? '自动保存' : '手动保存'}
-      </span>
-    </footer>
-  )
-})
-
-StatusBar.displayName = 'StatusBar'

src/renderer/components/StatusBar/index.ts

@@ -1 +0,0 @@
-export { StatusBar } from './StatusBar'

src/renderer/stores/__tests__/editorStore.test.ts

@@ -103,30 +103,7 @@ describe('editorStore', () => {
 
   describe('editor live state (v0.6.0)', () => {
     beforeEach(() => {
-      useEditorStore.setState({ stats: null, cursor: null, zenMode: false })
-    })
-
-    it('should set stats', () => {
-      useEditorStore.getState().setStats({
-        characters: 10,
-        words: 2,
-        chineseChars: 5,
-        englishWords: 1,
-        lines: 3,
-        readingTime: 1,
-      })
-      expect(useEditorStore.getState().stats?.words).toBe(2)
-      expect(useEditorStore.getState().stats?.lines).toBe(3)
-    })
-
-    it('should clear stats', () => {
-      useEditorStore.getState().setStats(null)
-      expect(useEditorStore.getState().stats).toBeNull()
-    })
-
-    it('should set cursor position', () => {
-      useEditorStore.getState().setCursor({ line: 5, column: 12 })
-      expect(useEditorStore.getState().cursor).toEqual({ line: 5, column: 12 })
+      useEditorStore.setState({ zenMode: false })
     })
 
     it('should set zen mode', () => {

src/renderer/stores/editorStore.ts

@@ -16,21 +16,6 @@ export function getMetonaEditor(): MarkdownEditor | null {
 
 const THEME_CYCLE: ThemeMode[] = ['light', 'dark', 'warm']
 
-/** v0.6.0: 编辑器实时状态（由 Editor 组件绑定事件写入，状态栏消费） */
-export interface EditorLiveStats {
-  characters: number
-  words: number
-  chineseChars: number
-  englishWords: number
-  lines: number
-  readingTime: number
-}
-
-export interface EditorCursor {
-  line: number
-  column: number
-}
-
 interface EditorState {
   viewMode: ViewMode
   themeMode: ThemeMode
@@ -38,9 +23,7 @@ interface EditorState {
   externallyModified: { filePath: string } | null
   // UX-02: 全局加载状态
   loadingStates: Record<string, boolean>
-  // v0.6.0: 编辑器实时状态
-  stats: EditorLiveStats | null
-  cursor: EditorCursor | null
+  // v0.6.0: Zen 模式状态（Toolbar 消费）
   zenMode: boolean
 
   setViewMode: (mode: ViewMode) => void
@@ -50,9 +33,6 @@ interface EditorState {
   // UX-02: 加载状态管理
   setLoading: (key: string, loading: boolean) => void
   isLoading: (key: string) => boolean
-  // v0.6.0: 编辑器状态同步
-  setStats: (stats: EditorLiveStats | null) => void
-  setCursor: (cursor: EditorCursor | null) => void
   setZenMode: (zen: boolean) => void
 }
 
@@ -61,8 +41,6 @@ export const useEditorStore = create<EditorState>((set, get) => ({
   themeMode: 'light',
   externallyModified: null,
   loadingStates: {},
-  stats: null,
-  cursor: null,
   zenMode: false,
 
   setViewMode: (mode: ViewMode) => set({ viewMode: mode }),
@@ -80,7 +58,5 @@ export const useEditorStore = create<EditorState>((set, get) => ({
       loadingStates: { ...state.loadingStates, [key]: loading },
     })),
   isLoading: (key: string) => get().loadingStates[key] ?? false,
-  setStats: (stats: EditorLiveStats | null) => set({ stats }),
-  setCursor: (cursor: EditorCursor | null) => set({ cursor }),
   setZenMode: (zenMode: boolean) => set({ zenMode }),
 }))

src/renderer/styles/global.css

@@ -87,38 +87,6 @@ body {
   min-height: 0;
 }
 
-/* v0.6.0: StatusBar */
-#statusbar {
-  height: var(--statusbar-height);
-  background: var(--bg);
-  border-top: 1px solid var(--border);
-  display: flex;
-  align-items: center;
-  gap: 16px;
-  padding: 0 12px;
-  font-size: 12px;
-  color: var(--text-tertiary);
-  flex-shrink: 0;
-  user-select: none;
-}
-
-.statusbar-item {
-  white-space: nowrap;
-}
-
-.statusbar-spacer {
-  flex: 1;
-}
-
-.statusbar-zen {
-  color: var(--primary);
-  font-weight: 500;
-}
-
-.statusbar-autosave.saving {
-  color: var(--primary);
-}
-
 #main-content {
   flex: 1;
   display: flex;