v0.12.9: Completion Gate 架构修复 + 工作空间文件夹选择 + 搜索/Plan 全链路加固

Fix:
- Completion Gate read_file 误报消除 — 缩窄匹配为仅明确工具声明 + 写后读豁免
- Gate 阻断重试消息重写 — 待办中与 Gate 拦截匹配时明确要求调工具而非模糊修正
- FileWriteDedupHook (pre_tool) + PlanAutoTrackHook (post_tool) — Harness 插件化
- 工作空间浏览按钮修复 — openFile→openDirectory，原生文件夹选择对话框
- pre_tool Hook 执行结果可阻断 — HookResult.passed=false 时拦截工具执行
- Plan 步骤上限 6 + 动词过滤 + 阶段标题过滤 — 适配不同模型格式
- Plan Mode 任务描述固化到系统提示词 — 压缩后不丢失任务目标
- 全部完成信号去重 — system 消息不重复注入
- handleReflecting 空响应 pop() 精确定位最后 assistant 消息

Refactor:
- agent-engine.ts 移除全部硬编码模块变量和函数 — 迁移到 Hook 系统
- extractPlanSteps 增加 ACTION_VERBS 动词过滤
- Plan rejection 不再重置 loopCount

src/main/ipc.ts

@@ -130,6 +130,14 @@ export async function setupIPC(): Promise<void> {
     return result.filePath;
   });
 
+  ipcMain.handle('dialog:openDirectory', async () => {
+    const result = await dialog.showOpenDialog(mainWindow!, {
+      properties: ['openDirectory']
+    });
+    if (result.canceled) return null;
+    return result.filePaths;
+  });
+
   ipcMain.handle('fs:readFile', async (_, filePath: string) => {
     try {
       const check = checkPathAllowed(path.resolve(filePath), 'read');

src/main/menu.ts

@@ -101,7 +101,7 @@ export function createMenu(): void {
             dialog.showMessageBox(mainWindow!, {
               type: 'info',
               title: '关于 Metona Ollama',
-              message: 'Metona Ollama Desktop v0.12.5',
+              message: 'Metona Ollama Desktop v0.12.9',
               detail: 'TypeScript + Electron Ollama AI 聊天客户端\n\nhttps://gitee.com/thzxx/metona-ollama',
               icon: getIconPath()
             });

src/main/preload.ts

@@ -19,7 +19,8 @@ contextBridge.exposeInMainWorld('metonaDesktop', {
   },
   dialog: {
     openFile: (options?: unknown) => ipcRenderer.invoke('dialog:openFile', options),
-    saveFile: (options?: unknown) => ipcRenderer.invoke('dialog:saveFile', options)
+    saveFile: (options?: unknown) => ipcRenderer.invoke('dialog:saveFile', options),
+    openDirectory: () => ipcRenderer.invoke('dialog:openDirectory')
   },
   fs: {
     readFile: (filePath: string) => ipcRenderer.invoke('fs:readFile', filePath),