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/harness/tools/built-in/web-search.ts

@@ -20,6 +20,7 @@ import {
   buildSearXNGAuthHeaders,
   logTool,
 } from './network-utils';
+import type { WebFetchTool } from './web-fetch';
 
 // ===== 类型定义 =====
 
@@ -240,7 +241,10 @@ export class WebSearchTool implements IMetonaTool {
     timeoutMs: 300_000,
   };
 
-  constructor(private configService: ConfigService) {}
+  constructor(
+    private configService: ConfigService,
+    private webFetchTool: WebFetchTool,
+  ) {}
 
   async execute(args: Record<string, unknown>, _context: ToolExecutionContext): Promise<unknown> {
     const query = args.query as string;
@@ -463,7 +467,7 @@ export class WebSearchTool implements IMetonaTool {
     return Array.from(seen.values());
   }
 
-  // ===== 摘要增强 =====
+  // ===== 摘要增强（委托给 WebFetchTool） =====
 
   private async enhanceSnippets(results: SearchResult[], maxEnhance: number): Promise<void> {
     let enhanced = 0;
@@ -471,14 +475,13 @@ export class WebSearchTool implements IMetonaTool {
       if (enhanced >= maxEnhance) break;
       if (r.snippet.length < 30 && r.reachable) {
         try {
-          const resp = await fetchWithTimeout(r.url, {
-            headers: { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/131.0.0.0 Safari/537.36' },
-          }, 5_000);
-          if (resp.ok) {
-            const html = await resp.text();
-            // 延迟导入 htmlToText 以避免循环依赖
-            const { htmlToText } = await import('./network-utils');
-            const text = htmlToText(html).slice(0, 200);
+          const fetchResult = await this.webFetchTool.execute(
+            { url: r.url },
+            { sessionId: '', workspacePath: '', iteration: 0, requestId: '' },
+          ) as { success: boolean; content?: string };
+
+          if (fetchResult.success && fetchResult.content) {
+            const text = fetchResult.content.slice(0, 200);
             if (text.length > r.snippet.length) {
               r.snippet = text;
               r._enhanced = true;
@@ -492,7 +495,7 @@ export class WebSearchTool implements IMetonaTool {
     }
   }
 
-  // ===== 自动抓取完整内容 =====
+  // ===== 自动抓取完整内容（委托给 WebFetchTool） =====
 
   private async autoFetch(
     query: string,
@@ -524,21 +527,17 @@ export class WebSearchTool implements IMetonaTool {
     }
 
     const fetched: Array<{ url: string; title: string; content: string }> = [];
-    const { htmlToText } = await import('./network-utils');
 
     for (const item of toFetch) {
       try {
-        const resp = await fetchWithTimeout(item.result.url, {
-          headers: {
-            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/131.0.0.0 Safari/537.36',
-            'Accept-Language': 'zh-CN,zh;q=0.9',
-          },
-        }, 15_000);
+        // 委托给 WebFetchTool — 享受三阶段回退策略（HTTP + 反爬 + 浏览器渲染）
+        const fetchResult = await this.webFetchTool.execute(
+          { url: item.result.url },
+          { sessionId: '', workspacePath: '', iteration: 0, requestId: '' },
+        ) as { success: boolean; content?: string; method?: string };
 
-        if (resp.ok) {
-          const html = await resp.text();
-          const content = htmlToText(html);
-          fetched.push({ url: item.result.url, title: item.result.title, content });
+        if (fetchResult.success && fetchResult.content) {
+          fetched.push({ url: item.result.url, title: item.result.title, content: fetchResult.content });
         }
       } catch (err) {
         logTool('web_search', `Auto-fetch failed for ${item.result.url}: ${(err as Error).message}`);
@@ -547,12 +546,13 @@ export class WebSearchTool implements IMetonaTool {
         if (remaining.length > 0) {
           const randomPick = remaining[Math.floor(Math.random() * remaining.length)];
           try {
-            const resp2 = await fetchWithTimeout(randomPick.result.url, {
-              headers: { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/131.0.0.0 Safari/537.36' },
-            }, 10_000);
-            if (resp2.ok) {
-              const html2 = await resp2.text();
-              fetched.push({ url: randomPick.result.url, title: randomPick.result.title, content: htmlToText(html2) });
+            const fetchResult2 = await this.webFetchTool.execute(
+              { url: randomPick.result.url },
+              { sessionId: '', workspacePath: '', iteration: 0, requestId: '' },
+            ) as { success: boolean; content?: string };
+
+            if (fetchResult2.success && fetchResult2.content) {
+              fetched.push({ url: randomPick.result.url, title: randomPick.result.title, content: fetchResult2.content });
             }
           } catch {
             // 忽略补充失败