v0.1.2: 全项目代码审查修复 + 子代理编排器 + 上下文压缩 + 并行工具执行

后端修复: Ollama adapter 移除死代码/修复超时硬编码/iteration硬编码/pullModel无超时/流异常断开补发DONE; SSE解析器支持非字符串arguments; Sandbox fail-closed安全加固; IPC移除未使用变量

新增功能: TaskOrchestrator子任务编排器; DelegateTaskTool委派工具; Agent Loop并行工具执行; 上下文自动压缩; 记忆检索注入System Prompt

前端修复: useAgentStream text_delta thought累积bug; 工具调用状态正确流转; 修复重复stateChange事件; TraceStep.thought正确填充

electron/main.ts

@@ -41,13 +41,15 @@ import {
   WebSearchTool, WebFetchTool,
   MemoryStoreTool, MemorySearchTool,
   RunCommandTool,
-  browserTools, cleanupBrowser,
+  WebBrowserTool, cleanupBrowser,
+  DelegateTaskTool,
 } from './harness/tools/built-in';
 import { AuditLogHook, MemoryTriggerHook, PermissionCheckHook, RateLimitHook } from './harness/hooks';
 import { PolicyEngine } from './harness/sandbox/permissions';
 import { SandboxManager } from './harness/sandbox/sandbox';
 import { PromptInjectionDefender } from './harness/security/prompt-injection-defense';
 import { OutputValidator } from './harness/verification/output-validator';
+import { TaskOrchestrator } from './harness/orchestration/orchestrator';
 import { UpdateService } from './services/update.service';
 
 // ===== 步骤 1: 初始化日志系统（SYS 层）=====
@@ -148,22 +150,24 @@ async function initialize(): Promise<void> {
   // ===== 步骤 5: 工作空间文件 + System Prompt =====
   const contextBuilder = new ContextBuilder();
 
-  // ===== 步骤 6: 注册 9 个内置工具 =====
+  // ===== 步骤 6: 注册内置工具 =====
   const toolRegistry = new ToolRegistry();
   toolRegistry.registerBuiltin(new ReadFileTool());
   toolRegistry.registerBuiltin(new WriteFileTool());
   toolRegistry.registerBuiltin(new ListDirectoryTool());
   toolRegistry.registerBuiltin(new SearchFilesTool());
-  toolRegistry.registerBuiltin(new WebSearchTool(configService));
-  toolRegistry.registerBuiltin(new WebFetchTool());
+
+  // WebFetchTool 先于 WebSearchTool 构造，注入为依赖
+  const webFetchTool = new WebFetchTool();
+  toolRegistry.registerBuiltin(webFetchTool);
+  toolRegistry.registerBuiltin(new WebSearchTool(configService, webFetchTool));
+
   toolRegistry.registerBuiltin(new MemoryStoreTool(memoryManager));
   toolRegistry.registerBuiltin(new MemorySearchTool(memoryManager));
   toolRegistry.registerBuiltin(new RunCommandTool());
 
-  // 注册 9 个 Browser 浏览器工具
-  for (const tool of browserTools) {
-    toolRegistry.registerBuiltin(tool);
-  }
+  // 注册 Web Browser 统一浏览器工具
+  toolRegistry.registerBuiltin(new WebBrowserTool());
   log.info(`Registered ${toolRegistry.size} built-in tools`);
 
   // ===== MCP Manager =====
@@ -211,6 +215,19 @@ async function initialize(): Promise<void> {
   agentLoop.setTools(toolRegistry.listTools());
   agentLoop.setWorkspacePath(workspaceInfo.path);
 
+  // ===== Task Orchestrator（子任务委派）=====
+  const orchestrator = new TaskOrchestrator(
+    agentLoop, toolRegistry, preToolHooks, postToolHooks,
+    {
+      thinkingEnabled: agentThinkingEnabled ?? true,
+      thinkingEffort: agentThinkingEffort ?? 'high',
+      contextLength: ollamaNumCtx ?? undefined,
+    },
+  );
+  toolRegistry.registerBuiltin(new DelegateTaskTool(orchestrator));
+  // 重新设置工具列表，包含新注册的 delegate_task
+  agentLoop.setTools(toolRegistry.listTools());
+
   // ===== 热重载 Adapter 回调（设置变更时触发）=====
   const reloadAdapter = () => {
     const newAdapter = createAdapter();