v0.3.10: 全面优化增强 — 17项Bug修复/稳定性/功能改进

P0 致命Bug修复:
- A1: openFolderDialog 类型/运行时崩溃(文件夹打开功能完全失效)
- A2: SourceEditor 受控textarea手动改DOM反模式
- A3: tabStore.updateTabContent 内容相同时误标isModified

死代码清理:
- B1: 删除menu:*/save/as/viewMode 三个永不触发的IPC通道

健壮性修复:
- E1: rehypeFixImages 路径规范化+防越界加固
- E2: getFileName 尾斜杠返回正确文件名
- E3: EditorToolbar 行内代码按钮改用toggleInlineCodeCommand
- E4: ErrorBoundary 内联样式抽为CSS类

功能增强:
- D1: 标签页拖拽排序(tabStore.moveTab + TabBar DnD + CSS)
- D2: Milkdown自动配对括号/引号(ProseMirror插件)
- D3: 状态栏自动保存开关可点击
- D4: 文档大纲活跃标题高亮(useActiveHeading hook)
- D5: 关闭窗口前flush防抖数据(flushSaveToDB)
- D6: 搜索替换支持正则表达式

类型/架构:
- C2: preload类型集中定义(ElectronAPI契约)
- __pycache__ typo修复

文档/版本:
- README/DESIGN同步为Milkdown + v0.3.10
- 项目结构树/技术栈/快捷键表更新

验证: typecheck(仅7预存), lint✅, test 96/96, vite build✅

src/preload/index.ts

@@ -1,12 +1,14 @@
 import { contextBridge, ipcRenderer, shell } from 'electron'
 import { IPC_CHANNELS } from '../shared/ipc-channels'
+import type { ElectronAPI } from '../renderer/types/ipc'
 
-contextBridge.exposeInMainWorld('electronAPI', {
+// C-02: 运行时实现受 ElectronAPI 类型约束，编译期保证 preload 与渲染进程契约一致
+const api: ElectronAPI = {
   // File operations
   openFile: () => ipcRenderer.invoke(IPC_CHANNELS.DIALOG_OPEN_FILE),
   readFile: (filePath: string) => ipcRenderer.invoke(IPC_CHANNELS.FILE_READ, filePath),
-  saveFile: (data: { filePath: string | null; content: string }) => ipcRenderer.invoke(IPC_CHANNELS.FILE_SAVE, data),
-  saveFileAs: (data: { content: string }) => ipcRenderer.invoke(IPC_CHANNELS.FILE_SAVE_AS, data),
+  saveFile: (data) => ipcRenderer.invoke(IPC_CHANNELS.FILE_SAVE, data),
+  saveFileAs: (data) => ipcRenderer.invoke(IPC_CHANNELS.FILE_SAVE_AS, data),
   getCurrentPath: () => ipcRenderer.invoke(IPC_CHANNELS.FILE_GET_CURRENT_PATH),
   getFileStats: (filePath: string) => ipcRenderer.invoke(IPC_CHANNELS.FILE_STATS, filePath),
   reloadFile: () => ipcRenderer.invoke(IPC_CHANNELS.FILE_RELOAD),
@@ -37,39 +39,26 @@ contextBridge.exposeInMainWorld('electronAPI', {
   unwatchDir: () => ipcRenderer.invoke(IPC_CHANNELS.DIR_UNWATCH),
 
   // Events from main process — 返回取消订阅函数
-  onFileOpenInTab: (callback: (data: { filePath: string; content: string }) => void) => {
+  onFileOpenInTab: (callback) => {
     const handler = (_event: Electron.IpcRendererEvent, data: { filePath: string; content: string }) => callback(data)
     ipcRenderer.on(IPC_CHANNELS.FILE_OPEN_IN_TAB, handler)
     return () => { ipcRenderer.removeListener(IPC_CHANNELS.FILE_OPEN_IN_TAB, handler) }
   },
-  onMenuSave: (callback: () => void) => {
-    const handler = () => callback()
-    ipcRenderer.on(IPC_CHANNELS.MENU_SAVE, handler)
-    return () => { ipcRenderer.removeListener(IPC_CHANNELS.MENU_SAVE, handler) }
-  },
-  onMenuSaveAs: (callback: () => void) => {
-    const handler = () => callback()
-    ipcRenderer.on(IPC_CHANNELS.MENU_SAVE_AS, handler)
-    return () => { ipcRenderer.removeListener(IPC_CHANNELS.MENU_SAVE_AS, handler) }
-  },
-  onViewModeChange: (callback: (mode: string) => void) => {
-    const handler = (_event: Electron.IpcRendererEvent, mode: string) => callback(mode)
-    ipcRenderer.on(IPC_CHANNELS.MENU_VIEW_MODE, handler)
-    return () => { ipcRenderer.removeListener(IPC_CHANNELS.MENU_VIEW_MODE, handler) }
-  },
-  onExternalModification: (callback: (filePath: string) => void) => {
+  onExternalModification: (callback) => {
     const handler = (_event: Electron.IpcRendererEvent, filePath: string) => callback(filePath)
     ipcRenderer.on(IPC_CHANNELS.FILE_EXTERNALLY_MODIFIED, handler)
     return () => { ipcRenderer.removeListener(IPC_CHANNELS.FILE_EXTERNALLY_MODIFIED, handler) }
   },
-  onDirChanged: (callback: () => void) => {
+  onDirChanged: (callback) => {
     const handler = () => callback()
     ipcRenderer.on(IPC_CHANNELS.SIDEBAR_DIR_CHANGED, handler)
     return () => { ipcRenderer.removeListener(IPC_CHANNELS.SIDEBAR_DIR_CHANGED, handler) }
   },
-  onConfirmClose: (callback: () => void) => {
+  onConfirmClose: (callback) => {
     const handler = () => callback()
     ipcRenderer.on(IPC_CHANNELS.WINDOW_CONFIRM_CLOSE, handler)
     return () => { ipcRenderer.removeListener(IPC_CHANNELS.WINDOW_CONFIRM_CLOSE, handler) }
   }
-})
+}
+
+contextBridge.exposeInMainWorld('electronAPI', api)