重写本地环境修复编排

桌面桥接改为后台启动本地环境修复流程，并仅在发送 WebView 消息和桌面通知时回到 UI 线程。

将本地依赖修复拆分为编排服务、命令执行器和进度通道；管理员当前进程路径改用内存进度执行，不再轮询状态文件。

提权子进程状态文件新增启动状态、5 秒无进度失败和命令心跳进度，同时保留单条命令 20 分钟超时。

前端桥接在 localDependencyRepairStarted 时生成中文开始进度，保持既有请求、进度和结果协议。

新增并更新本地环境修复、桌面桥接和前端 bridge 测试，覆盖后台调度、管理员路径、命令启动异常、心跳、无进度失败和 started 进度。

Author: C4AL

resources/webui/upstream/source/src/desktop/bridge.ts

@@ -729,6 +729,20 @@ function handleLocalDependencyMessage(message: unknown): boolean {
   }
 
   if (message.type === 'localDependencyRepairStarted') {
+    const requestId = typeof message.requestId === 'string' ? message.requestId : '';
+    const actionId = typeof message.actionId === 'string' ? message.actionId : '';
+    if (!requestId || !actionId) return true;
+    const pending = pendingLocalDependencyRequests.get(requestId);
+    pending?.onProgress?.({
+      actionId,
+      phase: 'starting',
+      message: '正在准备修复。',
+      commandLine: null,
+      recentOutput: [],
+      logPath: null,
+      updatedAt: new Date().toISOString(),
+      exitCode: null,
+    });
     return true;
   }
 

resources/webui/upstream/source/tests/desktop/localDependencyBridge.test.ts

@@ -179,6 +179,12 @@ describe('local dependency desktop bridge', () => {
     await Promise.resolve();
     expect(settled).toBe(false);
     expect(progressEvents).toEqual([
+      expect.objectContaining({
+        actionId: 'repair-user-path',
+        phase: 'starting',
+        message: '正在准备修复。',
+        recentOutput: [],
+      }),
       expect.objectContaining({
         actionId: 'repair-user-path',
         phase: 'commandRunning',

src/CodexCliPlus.App/MainWindow.WebViewHost.cs

@@ -610,8 +610,9 @@ await SaveCodexUserFileAsync(
                         && actionIdElement.ValueKind == JsonValueKind.String
                             ? actionIdElement.GetString()
                             : null;
-                    _ = Dispatcher.InvokeAsync(async () =>
-                        await RunLocalDependencyRepairAsync(ReadRequestId(root), actionId)
+                    var repairRequestId = ReadRequestId(root);
+                    _ = Task.Run(() =>
+                        RunLocalDependencyRepairAsync(repairRequestId, actionId)
                     );
                     break;
 
@@ -1099,7 +1100,7 @@ private async Task RunLocalDependencyRepairAsync(string? requestId, string? acti
                 "未知修复动作。",
                 "桌面端只接受内置白名单 action id。"
             );
-            PostWebUiCommand(
+            await PostWebUiCommandOnDispatcherAsync(
                 new
                 {
                     type = "localDependencyRepairResult",
@@ -1114,7 +1115,7 @@ private async Task RunLocalDependencyRepairAsync(string? requestId, string? acti
         LocalDependencySnapshot? snapshot = null;
         try
         {
-            PostWebUiCommand(
+            await PostWebUiCommandOnDispatcherAsync(
                 new
                 {
                     type = "localDependencyRepairStarted",
@@ -1126,7 +1127,7 @@ private async Task RunLocalDependencyRepairAsync(string? requestId, string? acti
             result = await _localDependencyRepairService.RunElevatedRepairAsync(
                 actionId,
                 progress =>
-                    Dispatcher.InvokeAsync(() =>
+                    _ = Dispatcher.InvokeAsync(() =>
                         PostWebUiCommand(
                             new
                             {
@@ -1152,7 +1153,7 @@ private async Task RunLocalDependencyRepairAsync(string? requestId, string? acti
                 );
             }
 
-            PostWebUiCommand(
+            await PostWebUiCommandOnDispatcherAsync(
                 new
                 {
                     type = "localDependencyRepairResult",
@@ -1166,7 +1167,7 @@ private async Task RunLocalDependencyRepairAsync(string? requestId, string? acti
         {
             _logger.LogError($"Local dependency repair '{actionId}' failed before result.", exception);
             result = CreateLocalDependencyRepairFailure(actionId, "本地环境修复失败。", exception.Message);
-            PostWebUiCommand(
+            await PostWebUiCommandOnDispatcherAsync(
                 new
                 {
                     type = "localDependencyRepairResult",
@@ -1179,12 +1180,25 @@ private async Task RunLocalDependencyRepairAsync(string? requestId, string? acti
         if (result.Succeeded)
         {
             _changeBroadcastService.Broadcast("local-environment");
-            _notificationService.ShowAuto(result.Summary);
+            await Dispatcher.InvokeAsync(() => _notificationService.ShowAuto(result.Summary));
         }
         else
         {
-            _notificationService.ShowManual(result.Summary, result.Detail);
+            await Dispatcher.InvokeAsync(() =>
+                _notificationService.ShowManual(result.Summary, result.Detail)
+            );
+        }
+    }
+
+    private Task PostWebUiCommandOnDispatcherAsync(object message)
+    {
+        if (Dispatcher.CheckAccess())
+        {
+            PostWebUiCommand(message);
+            return Task.CompletedTask;
         }
+
+        return Dispatcher.InvokeAsync(() => PostWebUiCommand(message)).Task;
     }
 
     private LocalDependencyRepairResult CreateLocalDependencyRepairFailure(