feat: v0.8.0 流语义补全 · 会话可靠 · 恢复力 — finish_reason 全链路贯通根治"思考中停止" · 2445 用例全量回归

P0 会话可靠性收口（根治"模型思考着会话就停止"）：
- P0-1 finish_reason 全链路贯通：DONE 事件与 IterationStep 新增 finishReason，OpenAI 共享 SSE / Anthropic message_delta.stop_reason / Ollama done_reason 三路采集，TRACE 层弃用硬编码 'stop' 记录真值
- P0-2 空响应守卫 + 降级重试：零产出流→可重试错误走退避；思考耗尽输出预算（reasoning-only + length）→自动关闭思考降级重试一次；仍失败→OUTPUT_LENGTH_EXCEEDED 结构化错误 + 故障转移；附带根治 abort 恰逢零工具调用轮被 COMPLETED 抢占的真实缺陷
- P0-3 思考×能力×预算三对齐：DeepSeek/MiMo/Agnes/Ollama 四家 supportsThinking=false 强制不发思考参数；小输出预算告警；设置页联动提示
- P0-4 渲染层可见性：截断/空完成/友好错误三类提示，i18n 全部出层
- P0-5 回归四件套：reasoning-only 终止判定、集成级空闲超时、504 引擎重试归类、思考中 abort→USER_INTERRUPT、P4-2 强制收尾路径

FEAT-1：LLM 设置新增「最大输出上限」——Provider 支持矩阵显隐 + 模型上限钳制提示 + 超限保存警告 + llm.maxTokens 热生效

P1 修复面收口：
- 渲染层三缺陷根治：后台会话回放缓冲（2000 条/4MB 有界 + agent:getReplayState + 事件总线）+ abort 双层自愈 + sendMessage 收尾兜底 + 中断卡片清扫
- 工具 abort 信号全覆盖：web_search/web_fetch/http_request/code_search/git 系列/delegate_task 全部接入引擎中断；web_search 时间预算收敛（720s→≤240s）；移除伪造 ToolExecutionContext 与死代码
- 安全：本地 Pinned CONNECT 代理根治浏览器通道 DNS rebinding（校验期 IP pinning，可注入 resolver 表测）；配置 URL 域名解析深校验（DeepCheckSoftFailure 软失败）；SSE 空 error 帧防御修复；Ollama generate/embed AbortSignal.any 合并
- 缺陷清单：UTF-16 BOM 读取、tmp 同毫秒碰撞（nanoid 后缀）、code_search JS 回退参数对称（case_sensitive/前后文独立）、list_directory include_node_modules、崩溃自愈退避（60s 窗 ≥3 次停 reload）、MemoryViewer/Sidebar i18n 收口

P2 能力演进：
- 会话回收站：SCHEMA_VERSION 3 + 迁移 10（deleted_at，存在性守卫），软删除/恢复/彻底删除/30 天自动清理（启动+24h），searchMessages 聚合剔除，Sidebar 回收站面板
- 会话回放播放器：sessions:listRecordings/readRecording（白名单+目录边界+20MB 上限），SessionReplayPlayer 时间轴/步进/变速，Trace 面板入口
- electron-updater 自动更新：双轨（手动 feed 比对保留），生产环境启动静默检查 + update:status 广播 + app:updateInstall + LogsSettings UpdatePanel + builder publish 配置
- @ 文件提及：workspace.listFiles/readFileClip（边界/512KB/NUL 拒绝/MEMORY.md 保护），ChatInput Fuse 联想+键盘导航+附件管线注入
- MCP Resources/Prompts 发现：可选能力 try/catch 降级，mcp:listServerContents，MCPSettings 展开视图
- 文档对齐：内部 API 标准 HTML（Adapter 清单补 MiMo/已实现注记/STREAM_RESET/DONE.finishReason/ repetition_truncation 映射）；README v0.8.0 亮点表

P3 测试基建：
- 新增 4 个测试文件：engine-stream-contract（6）、engine-stream-reliability（4：集成空闲超时/504 重试/思考中 abort/P4-2 强制收尾）、thinking-capability-gate（7）、pinned-proxy（9，含深校验 5）、session-trash（5，DB 域）、use-agent-stream hook 级（5）、agent.test 回放缓冲（2）
- 契约更新：orchestrator 被中断 SubAgent success=false（abort 优先级修复语义）、SSE 空 error 帧、UTF-16 正常读取、DeepSeek 未配置思考显式 disabled、迁移矩阵 v2→3
- 弱断言根治：registry WEBP 单向断言、hooks-contracts 自比恒真、memory 空 token 补强

全量验证：typecheck 0 错误 / lint 0 问题 / 系统 Node 2144 通过（301 DB 用例按 ABI 跳过）/ Electron ABI 2445/2445 全量通过 0 跳过

README.md

@@ -10,7 +10,7 @@
 </p>
 
 <p align="center">
-  <img src="https://img.shields.io/badge/version-0.7.4-blue?style=flat-square" alt="Version" />
+  <img src="https://img.shields.io/badge/version-0.8.0-blue?style=flat-square" alt="Version" />
   <img src="https://img.shields.io/badge/license-MIT-green?style=flat-square" alt="License" />
   <img src="https://img.shields.io/badge/Electron-35-47848F?style=flat-square&logo=electron" alt="Electron" />
   <img src="https://img.shields.io/badge/React-19-61DAFB?style=flat-square&logo=react" alt="React" />
@@ -54,6 +54,23 @@
 
 ---
 
+## 🆕 v0.8.0 更新亮点
+
+| 特性 | 说明 |
+|:---|:---|
+| 🔒 **流结束契约（根治"思考中会话停止"）** | finish_reason 全链路贯通：`length` 截断不再被静默判定为完成；零产出流自动重试；思考耗尽输出预算时自动降级（关闭思考）重试一次，仍失败则给出 OUTPUT_LENGTH_EXCEEDED 结构化错误与修复建议 |
+| 🧠 **思考参数 × 模型能力门控** | `supportsThinking:false` 的模型（如 deepseek-v4-flash-vision-exp）不再发送思考参数，防止思考烧光输出预算；设置页同步提示 |
+| 🪟 **后台会话回放缓冲** | 切走会话后其运行内容不再丢失，切回时自动恢复；abort 失败自愈、收尾兜底、中断卡片清扫三重防线 |
+| 🗑️ **会话回收站** | 删除改为软删除，30 天自动清理；支持恢复与彻底删除 |
+| 🎬 **会话回放播放器** | TRACE JSONL 录制可视化回放（时间轴 / 步进 / 变速） |
+| 🛡️ **浏览器通道 SSRF 根治** | Agent 浏览器分区流量经本地 Pinned CONNECT 代理（校验期 IP pinning），关闭 DNS rebinding 残余窗口；配置类 URL 增加域名解析深校验 |
+| 📦 **electron-updater 自动更新** | 生产环境启动静默检查、可用即通知，一键下载安装 |
+| ✏️ **@ 文件提及** | 输入 `@` 联想工作空间文件，发送时以附件管线注入文本片段（512KB 上限 + 二进制拒绝） |
+| 🔍 **MCP Resources/Prompts 发现** | 连接后自动发现并列出 Server 的资源与提示词（可选能力，失败静默降级） |
+| ⚡ **工具中断全覆盖** | web_search / web_fetch / http_request / code_search / git 系列 / delegate_task 全部接入引擎 abort 信号；web_search 自动抓取增加时间预算收敛 |
+
+---
+
 ## ✨ 核心亮点
 
 <table>

docs/MetonaAI-Desktop 内部API请求与响应标准.html

@@ -639,8 +639,8 @@
   <span class="hl-prop">REASONING_DELTA</span> = <span class="hl-str">'reasoning_delta'</span>, <span class="hl-cm">// 推理内容增量</span>
   <span class="hl-prop">TOOL_CALL_DELTA</span> = <span class="hl-str">'tool_call_delta'</span>, <span class="hl-cm">// 工具调用增量</span>
   <span class="hl-prop">TOOL_CALL_COMPLETE</span> = <span class="hl-str">'tool_call_complete'</span>,
-  <span class="hl-prop">THINKING_START</span> = <span class="hl-str">'thinking_start'</span>,     <span class="hl-cm">// 思考开始</span>
+  <span class="hl-cm">// v0.7.2 注：THINKING_START/THINKING_END 已移除（全链路零发送方零消费者）</span>
-  <span class="hl-prop">THINKING_END</span> = <span class="hl-str">'thinking_end'</span>,         <span class="hl-cm">// 思考结束</span>
+  <span class="hl-prop">STREAM_RESET</span> = <span class="hl-str">'stream_reset'</span>,         <span class="hl-cm">// v0.7.4: 重试/故障转移后清空前端增量缓冲</span>
   <span class="hl-prop">ERROR</span> = <span class="hl-str">'error'</span>,                     <span class="hl-cm">// 流中错误</span>
   <span class="hl-prop">DONE</span> = <span class="hl-str">'done'</span>,                       <span class="hl-cm">// 流结束</span>
   <span class="hl-prop">USAGE</span> = <span class="hl-str">'usage'</span>,                     <span class="hl-cm">// Token 统计（通常在 DONE 前）</span>
@@ -663,6 +663,9 @@
   };                             <span class="hl-cm">// TOOL_CALL_DELTA</span>
   <span class="hl-prop">toolCall</span>?: <span class="hl-type">MetonaToolCall</span>;    <span class="hl-cm">// TOOL_CALL_COMPLETE（拼接完成后的完整调用）</span>
   <span class="hl-prop">usage</span>?: <span class="hl-type">MetonaTokenUsage</span>;    <span class="hl-cm">// USAGE</span>
+  <span class="hl-cm">// v0.8.0: DONE 事件新增 finishReason（归一化 OpenAI 语义：stop/length/</span>
+  <span class="hl-cm">// tool_calls/content_filter；MiMo repetition_truncation→stop）。引擎据此</span>
+  <span class="hl-cm">// 区分自然完成与输出上限截断（空响应守卫 + 降级重试）。</span>
   <span class="hl-prop">error</span>?: <span class="hl-type">MetonaError</span>;         <span class="hl-cm">// ERROR</span>
 }</pre>
     </div>
@@ -1000,16 +1003,22 @@
             <td>Ollama 原生 JSON / NDJSON</td>
         </tr>
         <tr>
-            <td class="field-name">AnthropicAdapter（未来计划，未实现）</td>
+            <td class="field-name">AnthropicAdapter（v0.8.0 注：已实现）</td>
             <td class="field-type">anthropic</td>
             <td>https://api.anthropic.com/v1/messages</td>
-            <td>Anthropic 原生 JSON</td>
+            <td>Anthropic 原生 JSON（message_start/content_block_delta/message_delta 事件机）</td>
         </tr>
         <tr>
-            <td class="field-name">OpenAIAdapter（未来计划，未实现）</td>
+            <td class="field-name">OpenAIAdapter（v0.8.0 注：已实现）</td>
             <td class="field-type">openai</td>
             <td>https://api.openai.com/v1/chat/completions</td>
-            <td>OpenAI 原生 JSON</td>
+            <td>OpenAI 原生 JSON（o 系列走 max_completion_tokens + reasoning_effort）</td>
+        </tr>
+        <tr>
+            <td class="field-name">MimoAdapter（v0.8.0 注：文档此前遗漏，已实现）</td>
+            <td class="field-type">mimo</td>
+            <td>https://api.xiaomimimo.com/v1/chat/completions</td>
+            <td>OpenAI 兼容 JSON（max_completion_tokens 含推理 token；finish_reason 含 repetition_truncation）</td>
         </tr>
     </table>
 
@@ -1051,14 +1060,17 @@
     </div>
 
     <h3>MVP 优先级</h3>
-    <p class="desc">当前优先实现以下 3 个 Adapter，Anthropic 和 OpenAI 为未来计划：</p>
+    <p class="desc">v0.8.0 注：六家 Adapter（DeepSeek / Agnes / MiMo / Ollama / OpenAI / Anthropic）均已实现。
+    流式 DONE 事件自 v0.8.0 起携带归一化 finishReason（stop / length / tool_calls / content_filter），
+    MiMo 的 repetition_truncation 映射为 stop；引擎以 finishReason=length 驱动空响应守卫与降级重试。</p>
     <table class="spec">
         <tr><th>优先级</th><th>Adapter</th><th>状态</th></tr>
-        <tr><td class="field-name">P0</td><td>DeepSeekAdapter</td><td class="field-type">MVP 必须实现</td></tr>
+        <tr><td class="field-name">P0</td><td>DeepSeekAdapter</td><td class="field-type">已实现</td></tr>
-        <tr><td class="field-name">P0</td><td>AgnesAdapter</td><td class="field-type">MVP 必须实现</td></tr>
+        <tr><td class="field-name">P0</td><td>AgnesAdapter</td><td class="field-type">已实现</td></tr>
-        <tr><td class="field-name">P1</td><td>OllamaAdapter</td><td class="field-type">MVP 必须实现（本地推理）</td></tr>
+        <tr><td class="field-name">P1</td><td>OllamaAdapter</td><td class="field-type">已实现（本地推理）</td></tr>
-        <tr><td class="field-name">P2</td><td>AnthropicAdapter</td><td class="field-type">未来计划</td></tr>
+        <tr><td class="field-name">P2</td><td>AnthropicAdapter</td><td class="field-type">已实现</td></tr>
-        <tr><td class="field-name">P2</td><td>OpenAIAdapter</td><td class="field-type">未来计划</td></tr>
+        <tr><td class="field-name">P2</td><td>OpenAIAdapter</td><td class="field-type">已实现</td></tr>
+        <tr><td class="field-name">P2</td><td>MimoAdapter</td><td class="field-type">已实现</td></tr>
     </table>
 
     <h3>Provider 故障转移策略</h3>

electron-builder.yml

@@ -43,5 +43,9 @@
     "allowToChangeInstallationDirectory": true,
     "createDesktopShortcut": true,
     "createStartMenuShortcut": true
+  },
+  "publish": {
+    "provider": "generic",
+    "url": "https://git.metona.cn/MetonaTeam/metona-updates/latest/"
   }
 }

electron/harness/adapters/__tests__/deepseek-vision.test.ts

@@ -238,8 +238,10 @@ describe('DeepSeek vision 模型多模态请求格式（v0.5.4）', () => {
     } as MetonaRequest);
 
     const body = requestBody();
-    // vision 模型 supportsThinking=false，但参数仍透传 thinking enabled（引擎决定）
+    // v0.8.0 P0-3 能力门控: vision 模型 supportsThinking=false → 显式 disabled，
-    expect(body.thinking).toEqual({ type: 'enabled' });
+    // 且不发送 reasoning_effort（思考会耗尽该模型 8192 输出预算 —— 生产事故根因）
+    expect(body.thinking).toEqual({ type: 'disabled' });
+    expect(body.reasoning_effort).toBeUndefined();
   });
 
   it('vision 模型 messages 数组首位始终为 system 消息', async () => {

electron/harness/adapters/__tests__/provider-request-shapes.test.ts

@@ -757,11 +757,14 @@ describe('DeepSeekAdapter — thinking 映射矩阵', () => {
     expect(bodies[0].reasoning_effort).toBeUndefined();
   });
 
-  it('thinkingEnabled 未配置 → 不发送 thinking 字段', async () => {
+  it('thinkingEnabled 未配置 → 显式 disabled（v0.8.0 P0-3 确定性契约）', async () => {
+    // v0.8.0 P0-3 契约变更: DeepSeek 服务端默认 thinking.enabled，未配置即发请求
+    // 会得到隐式思考 —— 现在未配置一律显式 disabled，行为不依赖服务端隐式默认
+    //（与 Agnes/MiMo 的显式口径对齐；引擎路径恒传布尔值，此处为兜底确定性）。
     const adapter = makeAdapter();
     const { bodies } = captureFetch();
     await adapter.send(makeRequest({ params: { maxTokens: 4096, temperature: 0, stream: false } }));
-    expect(bodies[0].thinking).toBeUndefined();
+    expect(bodies[0].thinking).toEqual({ type: 'disabled' });
   });
 
   it('effort 未配置缺省 high → reasoning_effort=high', async () => {

electron/harness/adapters/__tests__/sse-stream.test.ts

@@ -11,7 +11,7 @@ import {
   readStreamChunkWithIdleTimeout,
   SseUpstreamError,
 } from '../shared/sse-stream';
-import { MetonaStreamEventType } from '../../types';
+import { MetonaStreamEventType, type MetonaStreamEvent } from '../../types';
 
 /** 构造 SSE 测试流 */
 function makeStream(chunks: string[]): ReadableStream<Uint8Array> {
@@ -586,13 +586,33 @@ describe('parseSSEStream — 上游错误帧 status 推断矩阵', () => {
     expect((err as SseUpstreamError).status).toBe(503);
   });
 
-  it('error 为空对象 → 回退 message 为 {}（JSON.stringify 兜底使其仍被识别为错误帧）', async () => {
+  it('error 为空对象 → 不构成错误帧（v0.8.0 P1-3.1 防御分支根治后契约）', async () => {
-    // 源码注明的防御意图是无害空对象不报错，但 message 兜底取 JSON.stringify({})='{}'，
+    // v0.8.0 P1-3.1 根治: 旧实现 message 兜底取 JSON.stringify({})='{}' 恒真值，
-    // 恒真值使该防御分支失效 —— 此处锁定实际行为并留档（见报告）。
+    // `{"error":{}}` 被误判为错误帧抛 SseUpstreamError 并触发不必要的重试。
-    const err = await collectError({ error: {} });
+    // 新契约：无 message 且无 status/code 标识的空对象为无害帧，静默跳过。
+    const events: MetonaStreamEvent[] = [];
+    let error: Error | null = null;
+    try {
+      for await (const ev of parseSSEStream(
+        makeStream(['data: {"error":{}}\n\n', 'data: [DONE]\n\n']),
+        'r',
+        's',
+        1,
+      )) {
+        events.push(ev);
+      }
+    } catch (e) {
+      error = e as Error;
+    }
+    expect(error).toBeNull();
+    expect(events.some((ev) => ev.type === MetonaStreamEventType.DONE)).toBe(true);
+  });
+
+  it('error 有 code 无 message → 仍构成错误帧（标识存在，占位文案兜底）', async () => {
+    const err = await collectError({ error: { code: 'rate_limit_exceeded' } });
     expect(err).toBeInstanceOf(SseUpstreamError);
     expect((err as Error).message).toContain('upstream_error');
-    expect((err as SseUpstreamError).status).toBeUndefined();
+    expect((err as SseUpstreamError).status).toBe(429);
   });
 
   it('error 为空白字符串 → 不算错误帧', async () => {

electron/harness/adapters/__tests__/thinking-capability-gate.test.ts

@@ -0,0 +1,159 @@
+/**
+ * v0.8.0 P0-3: 思考参数 × 模型能力 门控矩阵。
+ *
+ * 根因回顾：MODEL_INFO 标注 supportsThinking:false 的模型（如
+ * deepseek-v4-flash-vision-exp）此前仍被发送 thinking 参数 —— 思考耗尽输出
+ * 预算（8192 上限）导致 finish_reason=length 空回复、会话静默停止。
+ * 本文件钉住四家 Provider 的能力门控行为与输出预算告警前置条件。
+ */
+
+import { describe, it, expect } from 'vitest';
+import { DeepSeekAdapter } from '../deepseek.adapter';
+import { AgnesAdapter } from '../agnes-ai.adapter';
+import { MimoAdapter } from '../mimo.adapter';
+import { OllamaAdapter } from '../ollama.adapter';
+import type { MetonaRequest } from '../../types';
+
+const SYSTEM_PROMPT = {
+  roleDefinition: 'test',
+  outputConstraints: '',
+  safetyGuidelines: '',
+};
+
+function makeRequest(overrides?: Partial<MetonaRequest['params']>): MetonaRequest {
+  return {
+    meta: {
+      sessionId: 's',
+      iteration: 1,
+      requestId: 'r',
+      timestamp: Date.now(),
+      agentVersion: '1.0.0',
+    },
+    systemPrompt: SYSTEM_PROMPT,
+    messages: [{ role: 'user', content: 'hi', timestamp: Date.now() }],
+    params: {
+      maxTokens: 63488,
+      temperature: 0,
+      stream: true,
+      thinkingEnabled: true,
+      thinkingEffort: 'max',
+      ...overrides,
+    },
+  };
+}
+
+function asNative(
+  adapter: unknown,
+): (req: MetonaRequest, stream: boolean) => Record<string, unknown> {
+  return (
+    adapter as { toNativeRequest: (r: MetonaRequest, s: boolean) => Record<string, unknown> }
+  ).toNativeRequest.bind(adapter);
+}
+
+describe('P0-3 thinking capability gate', () => {
+  it('DeepSeek: vision-exp (supportsThinking:false) → thinking disabled, no reasoning_effort, max_tokens clamped to 8192', async () => {
+    const adapter = new DeepSeekAdapter({
+      provider: 'deepseek',
+      baseURL: 'https://api.deepseek.com',
+      apiKey: 'k',
+      defaultModel: 'deepseek-v4-flash-vision-exp',
+    });
+    const body = asNative(adapter)(makeRequest(), false);
+    expect(body.thinking).toEqual({ type: 'disabled' });
+    expect(body.reasoning_effort).toBeUndefined();
+    expect(body.max_tokens).toBe(8192);
+  });
+
+  it('DeepSeek: pro (supportsThinking:true) → thinking enabled + reasoning_effort mapped (max→max)', async () => {
+    const adapter = new DeepSeekAdapter({
+      provider: 'deepseek',
+      baseURL: 'https://api.deepseek.com',
+      apiKey: 'k',
+      defaultModel: 'deepseek-v4-pro',
+    });
+    const body = asNative(adapter)(makeRequest(), false);
+    expect(body.thinking).toEqual({ type: 'enabled' });
+    expect(body.reasoning_effort).toBe('max');
+  });
+
+  it('Agnes: supportsThinking:false model → enable_thinking:false', async () => {
+    const adapter = new AgnesAdapter({
+      provider: 'agnes',
+      baseURL: 'https://apihub.agnes-ai.com/v1',
+      apiKey: 'k',
+      defaultModel: 'agnes-2.0-flash',
+    });
+    // 临时改写元信息模拟"不支持思考"的模型，结束后恢复
+    const table = AgnesAdapter['MODEL_INFO'] as Record<string, { supportsThinking: boolean }>;
+    const original = table['agnes-2.0-flash'].supportsThinking;
+    table['agnes-2.0-flash'].supportsThinking = false;
+    try {
+      const body = asNative(adapter)(makeRequest(), false);
+      expect(body.chat_template_kwargs).toEqual({ enable_thinking: false });
+    } finally {
+      table['agnes-2.0-flash'].supportsThinking = original;
+    }
+  });
+
+  it('Agnes: supportsThinking:true model → enable_thinking:true', async () => {
+    const adapter = new AgnesAdapter({
+      provider: 'agnes',
+      baseURL: 'https://apihub.agnes-ai.com/v1',
+      apiKey: 'k',
+      defaultModel: 'agnes-2.0-flash',
+    });
+    const body = asNative(adapter)(makeRequest(), false);
+    expect(body.chat_template_kwargs).toEqual({ enable_thinking: true });
+  });
+
+  it('MiMo: supportsThinking:false model → thinking disabled + temperature passthrough', async () => {
+    const adapter = new MimoAdapter({
+      provider: 'mimo',
+      baseURL: 'https://api.xiaomimimo.com/v1',
+      apiKey: 'k',
+      defaultModel: 'mimo-v2.5-pro',
+    });
+    const table = MimoAdapter['MODEL_INFO'] as Record<string, { supportsThinking: boolean }>;
+    const original = table['mimo-v2.5-pro'].supportsThinking;
+    table['mimo-v2.5-pro'].supportsThinking = false;
+    try {
+      const body = asNative(adapter)(makeRequest(), false);
+      expect(body.thinking).toEqual({ type: 'disabled' });
+      expect(body.temperature).toBe(0);
+    } finally {
+      table['mimo-v2.5-pro'].supportsThinking = original;
+    }
+  });
+
+  it('Ollama: probed no-thinking (cachedThinkingSupport=false) → no think parameter', async () => {
+    const adapter = new OllamaAdapter({
+      provider: 'ollama',
+      baseURL: 'http://localhost:11434',
+      apiKey: '',
+      defaultModel: 'qwen3:latest',
+    });
+    (adapter as unknown as { cachedThinkingSupport: boolean | null }).cachedThinkingSupport = false;
+    const body = await (
+      adapter as unknown as {
+        toNativeRequest: (r: MetonaRequest) => Promise<Record<string, unknown>>;
+      }
+    ).toNativeRequest(makeRequest());
+    expect(body.think).toBeUndefined();
+  });
+
+  it('Ollama: probe unknown (null) fails open → think parameter present', async () => {
+    const adapter = new OllamaAdapter({
+      provider: 'ollama',
+      baseURL: 'http://localhost:11434',
+      apiKey: '',
+      defaultModel: 'qwen3:latest',
+    });
+    (adapter as unknown as { cachedThinkingSupport: boolean | null }).cachedThinkingSupport = null;
+    const body = await (
+      adapter as unknown as {
+        toNativeRequest: (r: MetonaRequest) => Promise<Record<string, unknown>>;
+      }
+    ).toNativeRequest(makeRequest());
+    expect(body.think).toBe(true); // effort=max → true
+  });
+});

electron/harness/adapters/agnes-ai.adapter.ts

@@ -56,7 +56,10 @@ export class AgnesAdapter extends OpenAICompatibleAdapter {
 
   // ========== 协议参数映射（Agnes 差异点） ==========
 
-  protected override toNativeRequest(request: MetonaRequest, stream: boolean): Record<string, unknown> {
+  protected override toNativeRequest(
+    request: MetonaRequest,
+    stream: boolean,
+  ): Record<string, unknown> {
     // v0.6.2: images 处理收敛至共享层（原索引对齐循环在孤立 tool 过滤后会错位）
     const messages = buildOpenAICompatibleMessages(request, true);
     const tools = buildOpenAICompatibleTools(request.tools);
@@ -96,12 +99,21 @@ export class AgnesAdapter extends OpenAICompatibleAdapter {
     // 显式发送 enable_thinking:false —— 原实现只在 thinkingEnabled===true 时写该字段，
     // 若服务端默认开启思考，客户端没有任何路径把它关掉（DeepSeek/MiMo 均显式发送
     // disabled 保持对称，唯独此处漏了）。
+    // v0.8.0 P0-3: 模型能力门控 —— supportsThinking===false 的模型强制关闭思考
     {
       const effort = request.params.thinkingEffort ?? 'high';
+      const modelThinkingSupported =
+        AgnesAdapter.MODEL_INFO[this.config.defaultModel]?.supportsThinking !== false;
       // 未配置 thinkingEnabled 一律显式关闭 —— 与 DeepSeek/MiMo 的"服务端默认开启，
       // 必须显式发送 disabled"口径对齐，让行为确定性不依赖服务端隐式默认。
-      const wantThinking = request.params.thinkingEnabled === true && effort !== 'low';
+      const wantThinking =
+        request.params.thinkingEnabled === true && effort !== 'low' && modelThinkingSupported;
       body.chat_template_kwargs = { enable_thinking: wantThinking };
+      if (request.params.thinkingEnabled === true && !modelThinkingSupported) {
+        log.warn(
+          `[Agnes] model "${this.config.defaultModel}" does not support thinking — sending enable_thinking:false (P0-3 capability gate)`,
+        );
+      }
     }
 
     // 停止序列

electron/harness/adapters/anthropic.adapter.ts

@@ -24,6 +24,28 @@ import type { MetonaRequest, MetonaResponse, MetonaStreamEvent } from '../types'
 import { MetonaFinishReason, MetonaStreamEventType } from '../types';
 import type { MetonaModelInfo } from '../types/metona-adapter';
 
+/**
+ * v0.8.0 P0-1: Anthropic stop_reason → 归一化 OpenAI 语义（与 MetonaFinishReason
+ * 的非流式映射语义一致）。pause_turn（长回复暂停续传标记）视为自然停止。
+ */
+function mapAnthropicStopReason(reason: string): string {
+  switch (reason) {
+    case 'max_tokens':
+      return 'length';
+    case 'tool_use':
+      return 'tool_calls';
+    case 'refusal':
+    case 'content_filter':
+      return 'content_filter';
+    case 'end_turn':
+    case 'pause_turn':
+    case 'stop_sequence':
+      return 'stop';
+    default:
+      return 'stop';
+  }
+}
+
 export class AnthropicAdapter extends BaseAdapter {
   override readonly providerId: string = 'anthropic';
   readonly supportedModels = ['claude-sonnet-4-5', 'claude-opus-4-1', 'claude-haiku-4-5'];
@@ -116,6 +138,10 @@ export class AnthropicAdapter extends BaseAdapter {
     let buffer = '';
     let eventName = '';
     let streamEndedNormally = false;
+    // v0.8.0 P0-1: 采集 message_delta.delta.stop_reason —— Anthropic 的停止原因
+    // 在 message_delta（而非 message_stop）事件携带；旧实现只读 usage，
+    // max_tokens 截断在流式路径完全不可见（与 OpenAI 共享层 finish_reason 缺口同源）
+    let streamStopReason: string | undefined;
 
     // 工具调用缓冲：content block index → { id, name, argsBuffer }
     const toolBlocks = new Map<number, { id: string; name: string; argsBuffer: string }>();
@@ -256,11 +282,22 @@ export class AnthropicAdapter extends BaseAdapter {
               },
             });
           }
+          // v0.8.0 P0-1: 采集停止原因（message_delta.delta.stop_reason，可能在
+          // 多个 message_delta 中重复出现，取任一即可；归一化为 OpenAI 语义）
+          const delta = data.delta as Record<string, unknown> | undefined;
+          if (delta && typeof delta.stop_reason === 'string') {
+            streamStopReason = mapAnthropicStopReason(delta.stop_reason);
+          }
           break;
         }
         case 'message_stop': {
           streamEndedNormally = true;
-          events.push({ type: MetonaStreamEventType.DONE, ...base() });
+          events.push({
+            type: MetonaStreamEventType.DONE,
+            ...base(),
+            // v0.8.0 P0-1: 携带归一化停止原因
+            ...(streamStopReason ? { finishReason: streamStopReason } : {}),
+          });
           break;
         }
         case 'error': {
@@ -362,7 +399,13 @@ export class AnthropicAdapter extends BaseAdapter {
         log.warn('[Anthropic] Stream ended without message_stop (connection likely dropped)');
       }
       toolBlocks.clear();
-      yield { type: MetonaStreamEventType.DONE, ...base() };
+      yield {
+        type: MetonaStreamEventType.DONE,
+        ...base(),
+        // v0.8.0 P0-1: 断流合成路径同样携带已观察到的停止原因
+        //（断流时多为 undefined —— 引擎据此走空响应守卫/重试而非误判自然结束）
+        ...(streamStopReason ? { finishReason: streamStopReason } : {}),
+      };
     }
   }
 

electron/harness/adapters/deepseek.adapter.ts

@@ -164,7 +164,10 @@ export class DeepSeekAdapter extends OpenAICompatibleAdapter {
 
   // ========== 协议参数映射（DeepSeek 差异点） ==========
 
-  protected override toNativeRequest(request: MetonaRequest, stream: boolean): Record<string, unknown> {
+  protected override toNativeRequest(
+    request: MetonaRequest,
+    stream: boolean,
+  ): Record<string, unknown> {
     // v0.6.2: images 处理收敛至共享层（includeImages = vision 模型才转换，
     // 非 vision 静默丢弃——正确行为，见 openai-format.ts #27 记录）
     const messages = buildOpenAICompatibleMessages(request, this.isVisionModel());
@@ -200,10 +203,17 @@ export class DeepSeekAdapter extends OpenAICompatibleAdapter {
     }
 
     // Thinking 模式
+    // v0.8.0 P0-3 根治: 模型能力门控 —— MODEL_INFO.supportsThinking === false 的
+    // 模型（如 deepseek-v4-flash-vision-exp）一律不发思考参数并显式 disabled，
+    // 防止思考消耗输出预算（生产事故：vision-exp 8192 输出预算被 max 档思考
+    // 全部烧光 → finish_reason=length 空回复 → 会话静默停止）。
+    const modelThinkingSupported =
+      DeepSeekAdapter.MODEL_INFO[this.config.defaultModel]?.supportsThinking !== false;
+    const wantThinking = request.params.thinkingEnabled === true && modelThinkingSupported;
     // API 默认 thinking.type = "enabled"，必须显式发送 disabled 才能关闭
-    if (request.params.thinkingEnabled === false) {
+    if (!wantThinking) {
       body.thinking = { type: 'disabled' };
-    } else if (request.params.thinkingEnabled) {
+    } else {
       body.thinking = { type: 'enabled' };
       const effortMap: Record<string, string> = {
         low: 'high',
@@ -213,6 +223,13 @@ export class DeepSeekAdapter extends OpenAICompatibleAdapter {
       };
       // DeepSeek API 仅支持 high / max 两档，low/medium 映射为 high
       body.reasoning_effort = effortMap[request.params.thinkingEffort ?? 'high'] ?? 'high';
+      // v0.8.0 P0-3: 思考会占用输出预算 —— 钳制后预算过小时显式告警
+      //（思考 token 计入 max_tokens，预算过小会出现"思考耗尽正文为零"截断）
+      if (maxTokens < 8192) {
+        log.warn(
+          `[DeepSeek] thinking enabled with small output budget (${maxTokens} tokens after model clamp) — reasoning may consume the entire budget and truncate the answer`,
+        );
+      }
     }
 
     // 停止序列

electron/harness/adapters/mimo.adapter.ts

@@ -11,6 +11,7 @@
  * @see apis/mimo-api-docs-20260715.html
  */
 
+import log from 'electron-log';
 import type { MetonaRequest } from '../types';
 import type { MetonaModelInfo } from '../types/metona-adapter';
 import { buildOpenAICompatibleMessages, buildOpenAICompatibleTools } from './shared/openai-format';
@@ -72,7 +73,10 @@ export class MimoAdapter extends OpenAICompatibleAdapter {
 
   // ========== 协议参数映射（MiMo 差异点） ==========
 
-  protected override toNativeRequest(request: MetonaRequest, stream: boolean): Record<string, unknown> {
+  protected override toNativeRequest(
+    request: MetonaRequest,
+    stream: boolean,
+  ): Record<string, unknown> {
     // v0.6.2: images 处理收敛至共享层（原索引对齐循环在孤立 tool 过滤后会错位）
     const messages = buildOpenAICompatibleMessages(request, true);
     const tools = buildOpenAICompatibleTools(request.tools);
@@ -122,7 +126,12 @@ export class MimoAdapter extends OpenAICompatibleAdapter {
 
     // Thinking 模式（与 DeepSeek 参数结构一致）
     // MiMo API 默认 thinking.type = "enabled"，必须显式发送 disabled 才能关闭
-    if (request.params.thinkingEnabled === false) {
+    // v0.8.0 P0-3: 模型能力门控 —— supportsThinking===false 的模型强制 disabled
+    //（思考 token 计入 max_completion_tokens，能力不符的模型上会耗尽输出预算）
+    const modelThinkingSupported =
+      MimoAdapter.MODEL_INFO[this.config.defaultModel]?.supportsThinking !== false;
+    const wantThinking = request.params.thinkingEnabled !== false && modelThinkingSupported;
+    if (!wantThinking) {
       // 显式禁用思考：传 disabled + temperature/top_p（非思考模式下这两个参数有效）
       body.thinking = { type: 'disabled' };
       body.temperature = request.params.temperature;
@@ -131,6 +140,13 @@ export class MimoAdapter extends OpenAICompatibleAdapter {
       // 启用思考（包括 undefined，因为 MiMo 默认 enabled）
       // 思考模式下 temperature/top_p 被 API 强制覆盖为 1.0/0.95，不传
       body.thinking = { type: 'enabled' };
+      // v0.8.0 P0-3: 思考占用输出预算 —— 钳制后预算过小时显式告警
+      const effectiveMax = body.max_completion_tokens as number;
+      if (typeof effectiveMax === 'number' && effectiveMax < 8192) {
+        log.warn(
+          `[MiMo] thinking enabled with small output budget (${effectiveMax} tokens after model clamp) — reasoning may consume the entire budget and truncate the answer`,
+        );
+      }
     }
 
     // 停止序列

electron/harness/adapters/ollama.adapter.ts

@@ -192,6 +192,14 @@ export class OllamaAdapter extends BaseAdapter {
           // 流结束
           if (chunk.done) {
             streamEndedNormally = true;
+            // v0.8.0 P0-1: 采集 done_reason —— Ollama 的停止原因在最终 done chunk
+            // 携带；旧实现流式路径完全忽略（length 截断不可见），现归一化后随
+            // DONE 事件上交引擎
+            const doneReason = mapOllamaDoneReason(
+              chunk.done_reason as string | undefined,
+              Array.isArray(chunk.message?.tool_calls) && chunk.message.tool_calls.length > 0,
+            );
+            const finishReason = doneReason === MetonaFinishReason.LENGTH ? 'length' : undefined;
             // 发送 usage 信息
             yield {
               type: MetonaStreamEventType.USAGE,
@@ -214,6 +222,9 @@ export class OllamaAdapter extends BaseAdapter {
               iteration: request.meta.iteration,
               seq: seq++,
               timestamp: Date.now(),
+              // v0.8.0 P0-1: 仅 length 需要显式上交（stop/tool_calls 语义由
+              // 事件流本身表达；load/unload 属本地引擎状态非响应语义）
+              ...(finishReason ? { finishReason } : {}),
             };
             return;
           }
@@ -252,6 +263,8 @@ export class OllamaAdapter extends BaseAdapter {
     format?: string | object;
     images?: string[];
     options?: Record<string, unknown>;
+    /** v0.8.0 P1-3.2: 外部取消信号（与固定 300s 超时合并，任一触发即中止） */
+    signal?: AbortSignal;
   }): Promise<{
     response: string;
     thinking?: string;
@@ -262,8 +275,13 @@ export class OllamaAdapter extends BaseAdapter {
     const response = await fetch(`${this.baseURL}/api/generate`, {
       method: 'POST',
       headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify({ ...params, stream: false }),
+      body: JSON.stringify({ ...params, stream: false, signal: undefined }),
-      signal: AbortSignal.timeout(300_000),
+      // v0.8.0 P1-3.2 根治: 旧实现固定 AbortSignal.timeout(300_000) —— 外部中断
+      // 无法取消该请求（最长 5 分钟资源悬挂）。现用 AbortSignal.any 合并外部
+      // signal 与超时信号，任一触发即中止（Node ≥20.3 / Electron 35 满足）。
+      signal: params.signal
+        ? AbortSignal.any([params.signal, AbortSignal.timeout(300_000)])
+        : AbortSignal.timeout(300_000),
     });
 
     if (!response.ok) throw new Error(`Ollama generate error: ${response.status}`);
@@ -290,12 +308,17 @@ export class OllamaAdapter extends BaseAdapter {
     model: string;
     input: string | string[];
     dimensions?: number;
+    /** v0.8.0 P1-3.2: 外部取消信号（与固定 60s 超时合并） */
+    signal?: AbortSignal;
   }): Promise<{ embeddings: number[][]; totalDuration: number }> {
     const response = await fetch(`${this.baseURL}/api/embed`, {
       method: 'POST',
       headers: { 'Content-Type': 'application/json' },
       body: JSON.stringify(params),
-      signal: AbortSignal.timeout(60_000),
+      // v0.8.0 P1-3.2: 与 generate 同口径 —— 外部 signal 与超时合并
+      signal: params.signal
+        ? AbortSignal.any([params.signal, AbortSignal.timeout(60_000)])
+        : AbortSignal.timeout(60_000),
     });
 
     if (!response.ok) throw new Error(`Ollama embed error: ${response.status}`);
@@ -381,9 +404,18 @@ export class OllamaAdapter extends BaseAdapter {
    */
   private cachedContextWindow: number | null = null;
   private refreshingContextWindow = false;
+  /** v0.8.0 P0-3: /api/show 探测只发一次（构造函数发起），失败不重试（fail-open） */
+  private probeAttempted = false;
+  /**
+   * v0.8.0 P0-3: /api/show capabilities 探测缓存 —— 模型是否支持思考。
+   * null = 未探测/探测失败（fail-open 放行，与 listModels 能力回退策略一致）；
+   * false = 服务端明确不支持 → toNativeRequest 不发 think 参数。
+   */
+  private cachedThinkingSupport: boolean | null = null;
 
   private refreshContextWindow(): void {
-    if (this.refreshingContextWindow) return;
+    if (this.refreshingContextWindow || this.probeAttempted) return;
+    this.probeAttempted = true;
     this.refreshingContextWindow = true;
     void this.showModel(this.config.defaultModel)
       .then((info) => {
@@ -396,6 +428,10 @@ export class OllamaAdapter extends BaseAdapter {
             log.info(`[Ollama] Context window (num_ctx) detected: ${value}`);
           }
         }
+        // v0.8.0 P0-3: 同一次探测顺带缓存思考能力（供 toNativeRequest 同步门控）
+        if (Array.isArray(info.capabilities)) {
+          this.cachedThinkingSupport = info.capabilities.map(String).includes('thinking');
+        }
       })
       .catch(() => {
         /* 模型探测失败不阻塞对话 */
@@ -573,6 +609,9 @@ export class OllamaAdapter extends BaseAdapter {
   }
 
   private async toNativeRequest(request: MetonaRequest): Promise<Record<string, unknown>> {
+    // 说明：能力/num_ctx 探测由构造函数 fire-and-forget 发起（probeAttempts 上限
+    // 1 次）—— 此处不再重复探测，避免每次请求都打 /api/show（也保持测试环境的
+    // fetch 捕获不受污染）。探测失败时 cachedThinkingSupport=null → 门控 fail-open。
     const messages: Record<string, unknown>[] = [
       {
         role: 'system',
@@ -662,7 +701,13 @@ export class OllamaAdapter extends BaseAdapter {
     }
 
     // Thinking 模式
+    // v0.8.0 P0-3: 模型能力门控 —— /api/show capabilities 探测为不支持思考
+    //（cachedThinkingSupport === false）时不发 think 参数（Ollama 服务端默认关闭）；
+    // 未探测/探测失败（null）fail-open 放行，与 listModels 能力回退策略一致。
+    // 探测在适配器实例创建时 fire-and-forget 发起（refreshContextWindow）。
     if (request.params.thinkingEnabled) {
+      const modelThinkingSupported = this.cachedThinkingSupport !== false;
+      if (modelThinkingSupported) {
         const effortMap: Record<string, string | boolean> = {
           low: 'low',
           medium: 'medium',
@@ -670,6 +715,18 @@ export class OllamaAdapter extends BaseAdapter {
           max: true,
         };
         body.think = effortMap[request.params.thinkingEffort ?? 'high'] ?? true;
+        // v0.8.0 P0-3: 思考占用 num_predict 输出预算 —— 预算过小时显式告警
+        const numPredict = request.params.maxTokens;
+        if (typeof numPredict === 'number' && numPredict < 8192) {
+          log.warn(
+            `[Ollama] thinking enabled with small num_predict budget (${numPredict}) — reasoning may consume the entire budget and truncate the answer`,
+          );
+        }
+      } else {
+        log.warn(
+          `[Ollama] model "${this.config.defaultModel}" does not support thinking (per /api/show capabilities) — omitting think parameter (P0-3 capability gate)`,
+        );
+      }
     }
 
     return body;

electron/harness/adapters/openai.adapter.ts

@@ -12,13 +12,11 @@
  * @see https://platform.openai.com/docs/api-reference/chat
  */
 
+import log from 'electron-log';
 import type { MetonaRequest } from '../types';
 import type { MetonaModelInfo } from '../types/metona-adapter';
 import { buildOpenAICompatibleMessages, buildOpenAICompatibleTools } from './shared/openai-format';
-import {
+import { ModelCapabilityError, OpenAICompatibleAdapter } from './shared/openai-compatible-base';
-  ModelCapabilityError,
-  OpenAICompatibleAdapter,
-} from './shared/openai-compatible-base';
 
 export class OpenAIAdapter extends OpenAICompatibleAdapter {
   override readonly providerId: string = 'openai';
@@ -110,7 +108,10 @@ export class OpenAIAdapter extends OpenAICompatibleAdapter {
 
   // ========== 协议参数映射（OpenAI 差异点） ==========
 
-  protected override toNativeRequest(request: MetonaRequest, stream: boolean): Record<string, unknown> {
+  protected override toNativeRequest(
+    request: MetonaRequest,
+    stream: boolean,
+  ): Record<string, unknown> {
     // 推理模型检测（o 系列使用新参数名）
     const model = this.config.defaultModel;
     const isReasoningModel = /^(o\d|gpt-5)/.test(model);
@@ -168,6 +169,12 @@ export class OpenAIAdapter extends OpenAICompatibleAdapter {
         max: 'high',
       };
       body.reasoning_effort = effortMap[request.params.thinkingEffort ?? 'high'] ?? 'high';
+      // v0.8.0 P0-3: 推理 token 计入 max_completion_tokens —— 钳制后预算过小时告警
+      if (oaMaxTokens < 8192) {
+        log.warn(
+          `[OpenAI] reasoning enabled with small output budget (${oaMaxTokens} tokens after model clamp) — reasoning may consume the entire budget and truncate the answer`,
+        );
+      }
     } else if (!isReasoningModel) {
       // 非推理模型使用温度控制
       body.temperature = request.params.temperature;

electron/harness/adapters/shared/sse-stream.ts

@@ -139,17 +139,17 @@ function extractUpstreamErrorFrame(
         ? e.status_code
         : undefined;
   const rawCode = typeof e.code === 'string' ? e.code : typeof e.type === 'string' ? e.type : '';
-  const message =
-    typeof e.message === 'string'
-      ? e.message
-      : typeof e.msg === 'string'
-        ? e.msg
-        : JSON.stringify(errObj);
-
   // 无消息且无状态码的无害空对象不算错误（防御性）
-  if (!message && rawStatus === undefined && !rawCode) return null;
+  // v0.8.0 P1-3.1 根治: 旧实现 message 兜底取 JSON.stringify(errObj) —— '{}' 恒为
+  // 真值，使本防御分支永不可达，`{"error":{}}` 被误判为错误帧抛 SseUpstreamError
+  // （原行为被 sse-stream.test.ts 锁定留档，本次随修复同步改约）。
+  // 现契约：仅当存在显式 message/msg 或 status/code 标识之一才构成错误帧；
+  // 描述文本只在有标识但无显式文本时由序列化/占位生成。
+  const explicitMessage =
+    typeof e.message === 'string' ? e.message : typeof e.msg === 'string' ? e.msg : '';
+  if (!explicitMessage && rawStatus === undefined && !rawCode) return null;
   return {
-    message: message || `upstream error (${rawCode || rawStatus})`,
+    message: explicitMessage || `upstream error (${rawCode || rawStatus})`,
     status: rawStatus,
     code: rawCode || undefined,
   };
@@ -326,6 +326,10 @@ export async function* parseSSEStream(
   let buffer = '';
   // v0.6.3: 是否收到过 [DONE]（流断开兜底用）
   let sawDone = false;
+  // v0.8.0 P0-1: 跟踪 Provider 原生 finish_reason，随 DONE 事件携带给引擎
+  // （'stop' | 'length' | 'tool_calls' | 'content_filter' 等；引擎据此区分
+  // 自然完成与输出上限截断，此前 length 仅落日志、引擎不可见）
+  let lastFinishReason: string | undefined;
 
   // v0.7.4 P1-2: 流空闲超时 — 服务器保活但不再推送数据（连接挂死）时，
   // reader.read() 会无限挂起，totalTimeoutMs 只在迭代之间检查，无法兜底。
@@ -369,6 +373,8 @@ export async function* parseSSEStream(
             iteration,
             seq: seqRef.seq++,
             timestamp: Date.now(),
+            // v0.8.0 P0-1: 携带 Provider 原生 finish_reason（未见任何帧时 undefined）
+            ...(lastFinishReason ? { finishReason: lastFinishReason } : {}),
           };
           return;
         }
@@ -480,6 +486,11 @@ export async function* parseSSEStream(
 
         // 非 [DONE] 但 finish_reason 为 tool_calls 时提前 flush 缓冲区
         const finishReason = chunk.choices?.[0]?.finish_reason as string | undefined;
+        // v0.8.0 P0-1: 记录最近一次 finish_reason（最终帧通常携带于最后一个
+        // 含 choices 的 chunk），随 DONE 事件上交通知引擎与前端
+        if (finishReason) {
+          lastFinishReason = finishReason;
+        }
         if (finishReason === 'tool_calls') {
           // L-4 修复: 使用 flushToolCallBuffer 替代重复的遍历代码
           yield* flushToolCallBuffer(toolCallsBuffer, requestId, sessionId, iteration, seqRef);
@@ -528,6 +539,10 @@ export async function* parseSSEStream(
       iteration,
       seq: seqRef.seq++,
       timestamp: Date.now(),
+      // v0.8.0 P0-1: 断流合成路径同样携带已观察到的 finish_reason
+      //（注意：断流时 finishReason 多为 undefined —— 引擎据此走空响应守卫/重试，
+      // 而不是误判为模型自然说完了）
+      ...(lastFinishReason ? { finishReason: lastFinishReason } : {}),
     };
   }
 }

electron/harness/agent-loop/__tests__/engine-stream-contract.test.ts

@@ -0,0 +1,230 @@
+/**
+ * v0.8.0 P0-5: 引擎流结束契约测试 —— "模型思考着会话停止"根治回归防线。
+ *
+ * 钉住 chatStreamWithRetry 的流结束契约（P0-2）与 finish_reason 贯通（P0-1）：
+ * 1. 零产出流 → EmptyResponseError → 退避重试 → 重试耗尽 ERROR；
+ * 2. reasoning-only + finish_reason=length → 一次性降级重试（thinkingEnabled=false）
+ *    → 降级后成功 COMPLETED；
+ * 3. 降级重试仍 length → OutputTruncatedError → ERROR 事件携带
+ *    MetonaErrorCode.OUTPUT_LENGTH_EXCEEDED；
+ * 4. 有正文 + length → COMPLETED 且最终 DONE 事件携带 finishReason='length'；
+ * 5. 引擎最终 DONE 贯通最后一轮 step.finishReason。
+ */
+
+import { describe, it, expect } from 'vitest';
+import { AgentLoopEngine } from '../engine';
+import type { AgentLoopOutput } from '../types';
+import type {
+  MetonaRequest,
+  MetonaStreamEvent,
+  IMetonaProviderAdapter,
+  MetonaResponse,
+} from '../../types';
+import { MetonaStreamEventType, MetonaErrorCode } from '../../types';
+
+const SYSTEM_PROMPT = {
+  roleDefinition: 'test',
+  outputConstraints: '',
+  safetyGuidelines: '',
+};
+
+function makeAdapter(
+  script: (request: MetonaRequest) => MetonaStreamEvent[],
+): IMetonaProviderAdapter & { calls: MetonaRequest[] } {
+  const calls: MetonaRequest[] = [];
+  const adapter = {
+    providerId: 'mock' as const,
+    supportedModels: ['m'],
+    supportsToolCalling: true,
+    supportsThinking: true,
+    calls,
+    getContextWindow(): number {
+      return 128_000;
+    },
+    async send(_request: MetonaRequest): Promise<MetonaResponse> {
+      throw new Error('send() not expected in this test');
+    },
+    async *sendStream(request: MetonaRequest): AsyncIterable<MetonaStreamEvent> {
+      calls.push(request);
+      for (const ev of script(request)) {
+        yield ev;
+      }
+    },
+  };
+  return adapter as unknown as IMetonaProviderAdapter & { calls: MetonaRequest[] };
+}
+
+function makeEngine(adapter: IMetonaProviderAdapter, retryCount = 1): AgentLoopEngine {
+  return new AgentLoopEngine(
+    {
+      maxIterations: 3,
+      totalTimeoutMs: 10_000,
+      retryCount,
+      thinkingEnabled: true,
+      thinkingEffort: 'high',
+      contextWindow: 128_000,
+    },
+    adapter,
+  );
+}
+
+function textDelta(t: string): MetonaStreamEvent {
+  return {
+    type: MetonaStreamEventType.TEXT_DELTA,
+    requestId: 'r',
+    sessionId: 's',
+    iteration: 1,
+    seq: 0,
+    timestamp: Date.now(),
+    delta: t,
+  };
+}
+
+function reasoningDelta(t: string): MetonaStreamEvent {
+  return {
+    type: MetonaStreamEventType.REASONING_DELTA,
+    requestId: 'r',
+    sessionId: 's',
+    iteration: 1,
+    seq: 0,
+    timestamp: Date.now(),
+    delta: t,
+  };
+}
+
+function doneEvent(finishReason?: string): MetonaStreamEvent {
+  return {
+    type: MetonaStreamEventType.DONE,
+    requestId: 'r',
+    sessionId: 's',
+    iteration: 1,
+    seq: 0,
+    timestamp: Date.now(),
+    ...(finishReason ? { finishReason } : {}),
+  };
+}
+
+describe('engine stream-end contract (v0.8.0 P0-2)', () => {
+  it('scenario 2: reasoning-only + length → one degraded retry with thinking disabled → COMPLETED', async () => {
+    let call = 0;
+    const adapter = makeAdapter((req) => {
+      call++;
+      if (call === 1) {
+        // 第一次：思考烧满输出预算（reasoning-only + length 截断）
+        expect(req.params.thinkingEnabled).toBe(true);
+        return [reasoningDelta('thinking...'), doneEvent('length')];
+      }
+      // 降级重试：thinkingEnabled 必须已被引擎置 false
+      expect(req.params.thinkingEnabled).toBe(false);
+      return [textDelta('answer'), doneEvent('stop')];
+    });
+    const engine = makeEngine(adapter);
+    const events: MetonaStreamEvent[] = [];
+    engine.on('streamEvent', (e: MetonaStreamEvent) => events.push(e));
+
+    const output = await engine.runStream(
+      { role: 'user', content: 'hi', timestamp: Date.now() },
+      's1',
+      [],
+      SYSTEM_PROMPT,
+    );
+
+    expect(output.terminationReason).toBe('completed');
+    expect(output.finalAnswer).toBe('answer');
+    expect(adapter.calls.length).toBe(2);
+    // 降级重试经过 RETRY 事件（引擎消费后向渲染层转 STREAM_RESET）
+    expect(events.some((e) => e.type === MetonaStreamEventType.STREAM_RESET)).toBe(true);
+  });
+
+  it('scenario 2b: degraded retry still length → OUTPUT_LENGTH_EXCEEDED error (no infinite retry)', async () => {
+    const adapter = makeAdapter(() => [reasoningDelta('thinking...'), doneEvent('length')]);
+    const engine = makeEngine(adapter);
+    const events: MetonaStreamEvent[] = [];
+    engine.on('streamEvent', (e: MetonaStreamEvent) => events.push(e));
+
+    const output: AgentLoopOutput = await engine.runStream(
+      { role: 'user', content: 'hi', timestamp: Date.now() },
+      's1',
+      [],
+      SYSTEM_PROMPT,
+    );
+
+    // 恰好两次调用（原始 + 一次性降级重试），随后终止
+    expect(adapter.calls.length).toBe(2);
+    expect(output.terminationReason).toBe('error');
+    const errorEvent = events.find((e) => e.type === MetonaStreamEventType.ERROR);
+    expect(errorEvent).toBeDefined();
+    expect(errorEvent?.error?.code).toBe(MetonaErrorCode.OUTPUT_LENGTH_EXCEEDED);
+  });
+
+  it('scenario 1: zero-content stream → retryable → retry exhausted → ERROR', async () => {
+    const adapter = makeAdapter(() => []);
+    const engine = makeEngine(adapter, 1);
+    const events: MetonaStreamEvent[] = [];
+    engine.on('streamEvent', (e: MetonaStreamEvent) => events.push(e));
+
+    const output = await engine.runStream(
+      { role: 'user', content: 'hi', timestamp: Date.now() },
+      's1',
+      [],
+      SYSTEM_PROMPT,
+    );
+
+    expect(output.terminationReason).toBe('error');
+    expect(adapter.calls.length).toBe(2); // 原始 1 次 + 重试 1 次（retryCount=1）
+    const errorEvent = events.find((e) => e.type === MetonaStreamEventType.ERROR);
+    expect(errorEvent?.error?.message).toContain('empty stream');
+  });
+
+  it('scenario 4: text + length → COMPLETED with DONE.finishReason=length (no retry)', async () => {
+    const adapter = makeAdapter(() => [textDelta('partial answer'), doneEvent('length')]);
+    const engine = makeEngine(adapter);
+    const events: MetonaStreamEvent[] = [];
+    engine.on('streamEvent', (e: MetonaStreamEvent) => events.push(e));
+
+    const output = await engine.runStream(
+      { role: 'user', content: 'hi', timestamp: Date.now() },
+      's1',
+      [],
+      SYSTEM_PROMPT,
+    );
+
+    expect(output.terminationReason).toBe('completed');
+    expect(output.finalAnswer).toBe('partial answer');
+    expect(adapter.calls.length).toBe(1); // 有产出不重试
+    const done = events.find((e) => e.type === MetonaStreamEventType.DONE);
+    expect(done?.finishReason).toBe('length');
+  });
+
+  it('P0-1: normal stop → DONE carries finishReason=stop from adapter', async () => {
+    const adapter = makeAdapter(() => [textDelta('ok'), doneEvent('stop')]);
+    const engine = makeEngine(adapter);
+    const events: MetonaStreamEvent[] = [];
+    engine.on('streamEvent', (e: MetonaStreamEvent) => events.push(e));
+
+    const output = await engine.runStream(
+      { role: 'user', content: 'hi', timestamp: Date.now() },
+      's1',
+      [],
+      SYSTEM_PROMPT,
+    );
+
+    expect(output.terminationReason).toBe('completed');
+    const done = events.find((e) => e.type === MetonaStreamEventType.DONE);
+    expect(done?.finishReason).toBe('stop');
+  });
+
+  it('reasoning-only + natural stop (no length) → retryable empty response path', async () => {
+    const adapter = makeAdapter(() => [reasoningDelta('hmm'), doneEvent('stop')]);
+    const engine = makeEngine(adapter, 1);
+    const output = await engine.runStream(
+      { role: 'user', content: 'hi', timestamp: Date.now() },
+      's1',
+      [],
+      SYSTEM_PROMPT,
+    );
+    // 无产出且非 length 截断 → EmptyResponseError（可重试）→ 重试耗尽 ERROR
+    expect(output.terminationReason).toBe('error');
+    expect(adapter.calls.length).toBe(2);
+  });
+});

electron/harness/agent-loop/__tests__/engine-stream-reliability.test.ts

@@ -0,0 +1,243 @@
+/**
+ * v0.8.0 P0-5 回归测试（第二批）：流可靠性四件套的剩余项。
+ *
+ * 1. parseSSEStream 集成级空闲超时：挂死 ReadableStream → 60s 无数据 →
+ *    SseUpstreamError(504)（P1-2 防线的集成真实性，此前仅纯函数层覆盖）；
+ * 2. SseUpstreamError(504) 经引擎 isRetryableError 归类 → 退避重试后成功；
+ * 3. REASONING_DELTA 持续输出中 abort → USER_INTERRUPT（"思考中点停止"场景）；
+ * 4. 引擎 P4-2：上一 run 卡死（不响应 abort）→ 新 run 等待 30s → 强制 abort
+ *    → 再等 5s → 抛错（防"会话永久排队"）。
+ */
+
+import { describe, it, expect, vi, afterEach } from 'vitest';
+import { parseSSEStream, SseUpstreamError } from '../../adapters/shared/sse-stream';
+import { AgentLoopEngine } from '../engine';
+import type { MetonaRequest, MetonaStreamEvent, IMetonaProviderAdapter } from '../../types';
+import { MetonaStreamEventType } from '../../types';
+
+const SYSTEM_PROMPT = {
+  roleDefinition: 'test',
+  outputConstraints: '',
+  safetyGuidelines: '',
+};
+
+afterEach(() => {
+  vi.useRealTimers();
+});
+
+// ===== 1. 集成级空闲超时 =====
+
+describe('parseSSEStream integrated idle timeout (P0-5 #2)', () => {
+  function makeHungBody(): ReadableStream<Uint8Array> {
+    return {
+      getReader: () => ({
+        // 永不 resolve 的 read —— 模拟"服务器保活但不再推数据"
+        read: () => new Promise<never>(() => {}),
+        releaseLock: () => {},
+      }),
+    } as unknown as ReadableStream<Uint8Array>;
+  }
+
+  it('挂死流 60s 无数据 → SseUpstreamError(504)', async () => {
+    vi.useFakeTimers();
+    const iterator = parseSSEStream(makeHungBody(), 'r', 's', 1);
+    let thrown: unknown = null;
+    const firstRead = iterator.next().catch((e: unknown) => {
+      thrown = e;
+      return { done: true, value: undefined } as const;
+    });
+    // 推进 61s：IDLE_TIMEOUT_MS=60_000 触发 idle controller → read() 竞速失败
+    await vi.advanceTimersByTimeAsync(61_000);
+    await firstRead;
+    expect(thrown).toBeInstanceOf(SseUpstreamError);
+    expect((thrown as SseUpstreamError).status).toBe(504);
+    expect((thrown as Error).message).toContain('idle timeout');
+  });
+});
+
+// ===== 2. SseUpstreamError(504) → 引擎重试 =====
+
+describe('engine: SseUpstreamError(504) retry classification (P0-5 #3)', () => {
+  it('504 首败 → 退避重试 → 第二次流成功 → COMPLETED', async () => {
+    let call = 0;
+    const adapter = {
+      providerId: 'mock' as const,
+      supportedModels: ['m'],
+      supportsToolCalling: true,
+      supportsThinking: true,
+      getContextWindow: () => 128_000,
+      async send(): Promise<unknown> {
+        throw new Error('not used');
+      },
+      async *sendStream(_r: MetonaRequest): AsyncIterable<MetonaStreamEvent> {
+        call++;
+        if (call === 1) {
+          throw new SseUpstreamError('Stream idle timeout after 60000ms (no data received)', {
+            status: 504,
+          });
+        }
+        yield {
+          type: MetonaStreamEventType.TEXT_DELTA,
+          requestId: 'r',
+          sessionId: 's',
+          iteration: 1,
+          seq: 0,
+          timestamp: Date.now(),
+          delta: 'recovered',
+        };
+        yield {
+          type: MetonaStreamEventType.DONE,
+          requestId: 'r',
+          sessionId: 's',
+          iteration: 1,
+          seq: 1,
+          timestamp: Date.now(),
+          finishReason: 'stop',
+        };
+      },
+    } as unknown as IMetonaProviderAdapter;
+
+    const engine = new AgentLoopEngine(
+      { maxIterations: 3, totalTimeoutMs: 15_000, retryCount: 2, contextWindow: 128_000 },
+      adapter,
+    );
+    const events: MetonaStreamEvent[] = [];
+    engine.on('streamEvent', (e: MetonaStreamEvent) => events.push(e));
+    const output = await engine.runStream(
+      { role: 'user', content: 'hi', timestamp: Date.now() },
+      's1',
+      [],
+      SYSTEM_PROMPT,
+    );
+    expect(output.terminationReason).toBe('completed');
+    expect(output.finalAnswer).toBe('recovered');
+    expect(call).toBe(2);
+    // 重试经过 RETRY 事件（引擎消费后向渲染层转 STREAM_RESET）
+    expect(events.some((e) => e.type === MetonaStreamEventType.STREAM_RESET)).toBe(true);
+  });
+});
+
+// ===== 3. REASONING_DELTA 中途 abort =====
+
+describe('engine: abort during reasoning stream (P0-5 #4)', () => {
+  it('思考增量持续输出中 abort → USER_INTERRUPT，迟到 reasoning 不再产出事件', async () => {
+    const adapter = {
+      providerId: 'mock' as const,
+      supportedModels: ['m'],
+      supportsToolCalling: true,
+      supportsThinking: true,
+      getContextWindow: () => 128_000,
+      async send(): Promise<unknown> {
+        throw new Error('not used');
+      },
+      // 持续每 10ms 推送一个 reasoning delta，直到 abort 或 500 个（挂起）
+      async *sendStream(_r: MetonaRequest): AsyncIterable<MetonaStreamEvent> {
+        for (let i = 0; i < 500; i++) {
+          if (_r.params.thinkingEnabled === false) return;
+          yield {
+            type: MetonaStreamEventType.REASONING_DELTA,
+            requestId: 'r',
+            sessionId: 's',
+            iteration: 1,
+            seq: i,
+            timestamp: Date.now(),
+            delta: `t${i};`,
+          };
+          await new Promise((r) => setTimeout(r, 10));
+        }
+        yield {
+          type: MetonaStreamEventType.DONE,
+          requestId: 'r',
+          sessionId: 's',
+          iteration: 1,
+          seq: 999,
+          timestamp: Date.now(),
+        };
+      },
+    } as unknown as IMetonaProviderAdapter;
+
+    const engine = new AgentLoopEngine(
+      { maxIterations: 3, totalTimeoutMs: 30_000, retryCount: 0, contextWindow: 128_000 },
+      adapter,
+    );
+    const events: MetonaStreamEvent[] = [];
+    engine.on('streamEvent', (e: MetonaStreamEvent) => events.push(e));
+
+    const run = engine.runStream(
+      { role: 'user', content: 'hi', timestamp: Date.now() },
+      's1',
+      [],
+      SYSTEM_PROMPT,
+    );
+    // 等待至少 3 个 reasoning delta 到达（确认流确实在思考态输出中）
+    await new Promise((r) => setTimeout(r, 80));
+    expect(
+      events.filter((e) => e.type === MetonaStreamEventType.REASONING_DELTA).length,
+    ).toBeGreaterThanOrEqual(3);
+    engine.abort();
+    const output = await run;
+    expect(output.terminationReason).toBe('user_interrupt');
+    const lastReasoningIdx = events
+      .map((e) => e.type)
+      .lastIndexOf(MetonaStreamEventType.REASONING_DELTA);
+    const doneIdx = events.findIndex((e) => e.type === MetonaStreamEventType.DONE);
+    // abort 生效后不再有迟到 reasoning（abort 尾巴过滤在引擎侧）
+    expect(lastReasoningIdx).toBeLessThan(doneIdx);
+  }, 15_000);
+});
+
+// ===== 4. P4-2: 上一 run 卡死 → 30s 强制 abort + 5s 再等待 → 抛错 =====
+
+describe('engine: stuck previous run force-abort path (P4-2)', () => {
+  it('上一 run 不响应 abort → 新 run 30s 超时强制 abort → 5s 后仍卡 → 抛错', async () => {
+    vi.useFakeTimers();
+    let released = false;
+    const stuckAdapter = {
+      providerId: 'mock' as const,
+      supportedModels: ['m'],
+      supportsToolCalling: true,
+      supportsThinking: true,
+      getContextWindow: () => 128_000,
+      async send(): Promise<unknown> {
+        throw new Error('not used');
+      },
+      // 第一次 run：永远挂起且不响应 abort（模拟卡死的底层 fetch）；
+      // 挂起生成器无 yield 属场景定义（require-yield 由下行指令豁免）
+      // eslint-disable-next-line require-yield
+      async *sendStream(): AsyncIterable<MetonaStreamEvent> {
+        while (!released) {
+          await new Promise(() => {});
+        }
+        return;
+      },
+    } as unknown as IMetonaProviderAdapter;
+
+    const engine = new AgentLoopEngine(
+      { maxIterations: 3, totalTimeoutMs: 600_000, retryCount: 0, contextWindow: 128_000 },
+      stuckAdapter,
+    );
+    const firstRun = engine.runStream(
+      { role: 'user', content: 'first', timestamp: Date.now() },
+      's1',
+      [],
+      SYSTEM_PROMPT,
+    );
+    firstRun.catch(() => {});
+
+    // 新消息进入 → 等待上一 run 结束（30s 超时）→ 强制 abort → 5s 再等待 → 抛错
+    const secondRun = engine.runStream(
+      { role: 'user', content: 'second', timestamp: Date.now() },
+      's1',
+      [],
+      SYSTEM_PROMPT,
+    );
+    const expectation = expect(secondRun).rejects.toThrow(/Previous run did not finish/i);
+
+    // 驱动 30s 等待超时 + 5s 强制 abort 等待
+    await vi.advanceTimersByTimeAsync(30_500);
+    await vi.advanceTimersByTimeAsync(5_500);
+    // 清理：放行挂死流，让 firstRun 收敛
+    released = true;
+    await expectation;
+  }, 20_000);
+});

electron/harness/agent-loop/engine.ts

@@ -48,6 +48,37 @@ class DeadLoopError extends Error {
   }
 }
 
+/**
+ * v0.8.0 P0-2: 空响应错误 — 流结束但零产出（无 reasoning、无正文、无工具调用）。
+ * 属可重试的瞬时故障（上游断流被 [DONE] 兜底合成 / 网关干净空响应），携带
+ * status=503 使 engine.isRetryableError 的 5xx 分支命中，走指数退避重试；
+ * 重试耗尽后以 ERROR 收尾并给用户明确文案（此前该形态被静默判定 COMPLETED，
+ * 即"模型思考着会话就停止"的根因之一）。
+ */
+export class EmptyResponseError extends Error {
+  readonly status = 503;
+  constructor(message: string) {
+    super(message);
+    this.name = 'EmptyResponseError';
+  }
+}
+
+/**
+ * v0.8.0 P0-2: 输出截断错误 — 思考耗尽型截断（reasoning 烧满输出预算、正文零字节，
+ * finish_reason=length），一次性降级重试（关闭思考）后仍复现时抛出。
+ * 不可重试（status=400），携带 code=OUTPUT_LENGTH_EXCEEDED（IR 预留错误码首次
+ * 投产），engine.finish() 据此向前端发送结构化错误；非可重试语义同时触发
+ * Provider 故障转移（备用 Provider 输出预算更大时即构成自愈）。
+ */
+export class OutputTruncatedError extends Error {
+  readonly status = 400;
+  readonly code = MetonaErrorCode.OUTPUT_LENGTH_EXCEEDED;
+  constructor(message: string) {
+    super(message);
+    this.name = 'OutputTruncatedError';
+  }
+}
+
 const DEFAULT_CONFIG: AgentLoopConfig = {
   maxIterations: 20,
   totalTimeoutMs: 600_000,
@@ -88,6 +119,12 @@ export class AgentLoopEngine extends EventEmitter {
   private lastRealInputTokens = 0;
   /** 当前 run 的唯一标识（用于前端过滤旧流事件） */
   private runId: string = '';
+  /**
+   * v0.8.0 P0-1: 最近一轮 LLM 流的 Provider 原生停止原因（归一化 OpenAI 语义）。
+   * 由 adapter DONE 事件携带、引擎捕获；finish() 据此在最终 DONE 事件上转发，
+   * 前端/TRACE 据此区分自然完成与输出上限截断。
+   */
+  private lastIterationFinishReason: string | undefined;
   /** 正在进行的 run Promise（用于 run lock，防止并发 run 污染状态） */
   private currentRunPromise: Promise<AgentLoopOutput> | null = null;
 
@@ -269,6 +306,8 @@ export class AgentLoopEngine extends EventEmitter {
     this.toolCallHistory = [];
     // v0.7.4 P4-1: 重置工具结果历史（进度信号，与调用历史按轮对应）
     this.toolResultHistory = [];
+    // v0.8.0 P0-1: 重置最近一轮停止原因
+    this.lastIterationFinishReason = undefined;
 
     try {
       await this.transitionTo(AgentLoopState.INIT);
@@ -316,6 +355,16 @@ export class AgentLoopEngine extends EventEmitter {
 
         const step = await this.executeOneIterationStream(request, sessionId);
         this.iterations.push(step);
+        // v0.8.0 P0-1: 记录最近一轮停止原因（供 finish() 的 DONE 事件转发）
+        this.lastIterationFinishReason = step.finishReason;
+
+        // v0.8.0 P0-2 回归根治: abort 优先级 —— 旧实现该检查位于 while 循环
+        // 末尾，若 abort 恰逢"零工具调用轮"（如思考中点停止），空轮会先命中
+        // 下方 COMPLETED 分支，把 USER_INTERRUPT 静默吞成 completed（与新
+        // 回归测试 engine-stream-reliability 同时发现）。此处前置检查修复。
+        if (this.aborted) {
+          return this.finish(TerminationReason.USER_INTERRUPT);
+        }
 
         // 将 assistant 回复加入消息历史
         // 崩溃修复（会话停止根因）: 原条件 `if (step.thought)` 在模型发起纯工具调用
@@ -499,13 +548,20 @@ export class AgentLoopEngine extends EventEmitter {
       let reasoningContent = '';
       const toolCallsBuffer = new Map<number, { name: string; argsBuffer: string }>();
       let tokenUsage: TokenUsage | undefined;
+      // v0.8.0 P0-1: 本轮流的 Provider 原生停止原因（adapter DONE 携带）
+      let iterationFinishReason: string | undefined;
 
       // 流式接收响应
       for await (const event of this.chatStreamWithRetry(request)) {
         if (this.aborted) break;
 
         // 过滤掉每轮的 DONE 事件 — 只在全部迭代完成后发送一个最终 DONE
-        if (event.type === MetonaStreamEventType.DONE) continue;
+        // v0.8.0 P0-1: 先捕获 adapter 携带的 Provider 原生停止原因再过滤 ——
+        // 引擎与 TRACE 据此区分自然完成与输出上限截断（length 此前完全不可见）
+        if (event.type === MetonaStreamEventType.DONE) {
+          if (event.finishReason) iterationFinishReason = event.finishReason;
+          continue;
+        }
 
         // 过滤掉 RETRY 类型的 ERROR 事件 — 不转发到前端，避免触发虚假错误 UI
         // RETRY 事件仅用于 Engine 内部清空缓冲区（见下方 switch 分支）
@@ -598,6 +654,11 @@ export class AgentLoopEngine extends EventEmitter {
       // === v0.2.0: PARSING 状态 — 解析流式缓冲区中的工具调用 ===
       await this.transitionTo(AgentLoopState.PARSING);
 
+      // v0.8.0 P0-1: 记录本轮停止原因到迭代步骤（TRACE/审计/前端提示的输入）
+      if (iterationFinishReason) {
+        step.finishReason = iterationFinishReason;
+      }
+
       // L-19 修复: 提取 finalizeToolCallsFromBuffer 子方法（PARSING 阶段）
       this.finalizeToolCallsFromBuffer(step, toolCallsBuffer);
 
@@ -1031,6 +1092,11 @@ export class AgentLoopEngine extends EventEmitter {
     let attempt = 0;
     let currentAdapter = this.adapter;
     let failoverUsed = false;
+    // v0.8.0 P0-2: 降级重试状态。思考耗尽型截断（reasoning 烧满输出预算、正文
+    // 零字节）时以 thinkingEnabled=false 重发一次（每 run 最多一次）；activeRequest
+    // 被替换后，后续的重试与故障转移均使用降级版请求（降级跨故障转移保持）。
+    let degradedThinkingRetryUsed = false;
+    let activeRequest = request;
 
     while (true) {
       try {
@@ -1038,9 +1104,9 @@ export class AgentLoopEngine extends EventEmitter {
           // 重试时：先发送一个 retry 事件，让 UI 清空已接收的 delta
           yield {
             type: MetonaStreamEventType.ERROR,
-            requestId: request.meta.requestId,
+            requestId: activeRequest.meta.requestId,
-            sessionId: request.meta.sessionId,
+            sessionId: activeRequest.meta.sessionId,
-            iteration: request.meta.iteration,
+            iteration: activeRequest.meta.iteration,
             seq: 0,
             timestamp: Date.now(),
             error: {
@@ -1050,7 +1116,86 @@ export class AgentLoopEngine extends EventEmitter {
             },
           };
         }
-        yield* currentAdapter.sendStream(request);
+        // v0.8.0 P0-2: 逐事件跟踪内容产出与停止原因（原 yield* 直通改显式转发）。
+        // yield* 正常返回后执行流结束契约检查；异常路径不进入检查（走 catch 重试）。
+        // - sawThought: 思考有产出（REASONING_DELTA）
+        // - sawOutput:  正文/工具调用有产出（TEXT_DELTA / TOOL_CALL_*）
+        // - lastFinishReason: adapter DONE 携带的 Provider 原生停止原因
+        let sawThought = false;
+        let sawOutput = false;
+        let lastFinishReason: string | undefined;
+        for await (const event of currentAdapter.sendStream(activeRequest)) {
+          if (event.type === MetonaStreamEventType.REASONING_DELTA) {
+            sawThought = true;
+          }
+          if (
+            event.type === MetonaStreamEventType.TEXT_DELTA ||
+            event.type === MetonaStreamEventType.TOOL_CALL_DELTA ||
+            event.type === MetonaStreamEventType.TOOL_CALL_COMPLETE
+          ) {
+            sawOutput = true;
+          }
+          if (event.type === MetonaStreamEventType.DONE && event.finishReason) {
+            lastFinishReason = event.finishReason;
+          }
+          yield event;
+        }
+
+        // ===== 流结束契约检查（根治"空回复 → 静默 COMPLETED → 会话无声停止"）=====
+        if (!sawOutput) {
+          if (!sawThought) {
+            // 零产出流：连接中断被 [DONE] 兜底合成 / 上游干净空响应 —— 可重试
+            // 瞬时故障（status=503 命中 5xx 重试分支），重试耗尽后 ERROR 收尾
+            throw new EmptyResponseError(
+              'Model returned an empty stream (no reasoning, no text, no tool calls). ' +
+                'This is usually caused by an upstream connection drop or an output-limit cutoff.',
+            );
+          }
+          if (lastFinishReason === 'length') {
+            // 思考耗尽型截断（v0.7.4 生产事故形态：finish_reason=length、正文零
+            // 字节）—— 先做一次性降级重试（临时关闭思考重发），仍复现则终止。
+            if (!degradedThinkingRetryUsed && activeRequest.params.thinkingEnabled === true) {
+              degradedThinkingRetryUsed = true;
+              attempt = 0;
+              activeRequest = {
+                ...activeRequest,
+                params: { ...activeRequest.params, thinkingEnabled: false },
+              };
+              log.warn(
+                '[AgentLoop] Output budget exhausted by reasoning (finish_reason=length, empty content) — retrying once with thinking disabled',
+              );
+              yield {
+                type: MetonaStreamEventType.ERROR,
+                requestId: activeRequest.meta.requestId,
+                sessionId: activeRequest.meta.sessionId,
+                iteration: activeRequest.meta.iteration,
+                seq: 0,
+                timestamp: Date.now(),
+                error: {
+                  code: MetonaErrorCode.RETRY,
+                  message: 'Thinking consumed the output budget — retrying with thinking disabled',
+                  retryable: true,
+                },
+              };
+              continue;
+            }
+            // 降级重试不可用（已用 / 思考本就关闭）仍截断 —— 终止：携带 IR 预留
+            // 的 OUTPUT_LENGTH_EXCEEDED 码，finish() 映射为结构化错误事件，
+            // 非 retryable 同时触发 Provider 故障转移（备用预算更大即自愈）。
+            throw new OutputTruncatedError(
+              'The model consumed the entire output token budget on reasoning and produced no answer ' +
+                '(finish_reason=length). Raise the max output limit, disable thinking, or switch to a model with a larger output budget.',
+            );
+          }
+          // 思考有产出但自然结束且零正文（罕见的服务端异常收尾）—— 与零产出流
+          // 同按可重试空响应处理（retryCount 兜底防循环）
+          throw new EmptyResponseError(
+            'Model stream ended after reasoning without any answer content.',
+          );
+        }
+        // sawOutput=true：正文/工具调用已有产出。length 截断场景不再重试 ——
+        // 工具参数截断由 _truncatedArguments 自愈（v0.6.3 契约）、正文截断由
+        // DONE.finishReason='length' 驱动前端截断提醒（P0-4）。
         return;
       } catch (error) {
         if (this.aborted) throw error;
@@ -1136,6 +1281,11 @@ export class AgentLoopEngine extends EventEmitter {
 
   /** 判断错误是否可重试 */
   private isRetryableError(error: unknown): boolean {
+    // v0.8.0 P0-2: 流结束契约错误的显式归类（EmptyResponseError 自带 status=503、
+    // OutputTruncatedError 自带 status=400，本可由下方 5xx/4xx 分支覆盖；此处
+    // 显式 instanceof 使两类新错误的语义不依赖 status 字段约定）
+    if (error instanceof EmptyResponseError) return true;
+    if (error instanceof OutputTruncatedError) return false;
     const err = error as { status?: number; code?: string; message?: string };
     // 429 Too Many Requests — 可重试
     if (err.status === 429) return true;
@@ -1482,9 +1632,17 @@ export class AgentLoopEngine extends EventEmitter {
     if ((reason === TerminationReason.ERROR || reason === TerminationReason.DEAD_LOOP) && error) {
       // v0.3.17: 识别 ContentFilterError，映射为 CONTENT_FILTERED 错误码 + 友好消息
       // v0.6.4: 流式路径的拦截以 err.code='content_filtered' 抵达（无 instanceof 上下文），一并识别
+      // v0.8.0 P0-2: 透传流结束契约错误的结构化错误码（OUTPUT_LENGTH_EXCEEDED 等），
+      // 前端据此展示针对性文案而非泛化 UNKNOWN
       const isContentFilter =
         error instanceof ContentFilterError ||
         (error as Error & { code?: string }).code === MetonaErrorCode.CONTENT_FILTERED;
+      const rawErrorCode = (error as Error & { code?: string }).code;
+      const errorCode = isContentFilter
+        ? MetonaErrorCode.CONTENT_FILTERED
+        : rawErrorCode === MetonaErrorCode.OUTPUT_LENGTH_EXCEEDED
+          ? MetonaErrorCode.OUTPUT_LENGTH_EXCEEDED
+          : MetonaErrorCode.UNKNOWN;
       this.emit('streamEvent', {
         type: MetonaStreamEventType.ERROR,
         requestId: this.currentRequestId,
@@ -1494,7 +1652,7 @@ export class AgentLoopEngine extends EventEmitter {
         timestamp: Date.now(),
         runId: this.runId,
         error: {
-          code: isContentFilter ? MetonaErrorCode.CONTENT_FILTERED : MetonaErrorCode.UNKNOWN,
+          code: errorCode,
           message: isContentFilter
             ? '内容被 Provider 安全审核拦截，请修改图片或文本后重试'
             : error.message,
@@ -1513,6 +1671,9 @@ export class AgentLoopEngine extends EventEmitter {
       timestamp: Date.now(),
       runId: this.runId,
       terminationReason: reason,
+      // v0.8.0 P0-1: 转发最后一轮的 Provider 原生停止原因（前端据此展示
+      // "回答可能因输出上限被截断"等提示；无流式轮次时为 undefined）
+      ...(this.lastIterationFinishReason ? { finishReason: this.lastIterationFinishReason } : {}),
     });
 
     // H-3: 通过 stateChange 发射 TERMINATED 状态（前端可据此清理 UI）

electron/harness/agent-loop/index.ts

@@ -1,4 +1,6 @@
 export { AgentLoopEngine } from './engine';
+// v0.8.0 P0-2: 流结束契约错误（空响应重试 / 思考耗尽截断终止）—— 导出供测试断言
+export { EmptyResponseError, OutputTruncatedError } from './engine';
 export {
   AgentLoopState,
   TerminationReason,

electron/harness/agent-loop/types.ts

@@ -48,6 +48,13 @@ export interface IterationStep {
   toolCalls?: MetonaToolCall[];
   toolResults?: MetonaToolResult[];
   tokenUsage?: TokenUsage;
+  /**
+   * v0.8.0 P0-1: 本轮 LLM 流的 Provider 原生停止原因（归一化 OpenAI 语义：
+   * 'stop' | 'length' | 'tool_calls' | 'content_filter'）。
+   * 由 adapter DONE 事件携带、引擎捕获；TRACE 层据此记录真值，
+   * 引擎据此区分"自然完成"与"输出上限截断"（P0-2 空响应守卫的输入）。
+   */
+  finishReason?: string;
 }
 
 export interface TokenUsage {

electron/harness/hooks/__tests__/hooks-contracts.test.ts

@@ -248,7 +248,9 @@ describe('SecurityScanHook — 分级防护矩阵', () => {
     const hook = new SecurityScanHook(asDefender(sd));
     await hook.afterExecute(toolCall('web_fetch'), failRes, 's');
     await hook.afterExecute(toolCall('web_fetch'), zeroScoreRes, 's');
-    expect(failRes.result).toBe(failRes.result);
+    // v0.8.0 P3 根治: 旧断言 failRes.result 自比恒真 —— 现断言"失败结果不触发
+    // 扫描、内容保持原样"（与下方 zero-score 计数互补）
+    expect(failRes.result).toBe(longText('__low_score_'));
     expect(
       sd.detectSemantic.mock.calls.filter((c: unknown[]) => String(c[0]).includes('__zero')).length,
     ).toBe(1);

electron/harness/memory/__tests__/memory-manager.test.ts

@@ -157,6 +157,8 @@ describe.skipIf(!dbAvailable)('MemoryManager — tokenize 分词', () => {
   it('数字/纯符号文本产生空 token 列表（search 返回空）', () => {
     const tokens = tokensOf('12345 !@#');
     expect(Array.isArray(tokens)).toBe(true);
+    // v0.8.0 P3: 补强断言 —— 旧断言只验数组类型未验为空
+    expect(tokens).toHaveLength(0);
   });
 });
 

electron/harness/orchestration/__tests__/orchestrator.test.ts

@@ -39,12 +39,24 @@ const seenRequests: MetonaRequest[] = [];
 
 function doneOnlyStream(request: MetonaRequest): AsyncGenerator<MetonaStreamEvent> {
   return (async function* () {
+    // v0.8.0 P0-2 契约对齐: 引擎的流结束契约要求至少有一个产出事件
+    //（TEXT/REASONING/TOOL_CALL），纯 DONE 空流会被 EmptyResponseError 守卫
+    // 判为可重试空响应并触发退避重试。此处补一个 TEXT_DELTA 使流构成合法完成。
+    yield {
+      type: MetonaStreamEventType.TEXT_DELTA,
+      requestId: request.meta.requestId,
+      sessionId: request.meta.sessionId,
+      iteration: request.meta.iteration,
+      seq: 0,
+      timestamp: Date.now(),
+      delta: 'sub-agent done',
+    } as MetonaStreamEvent;
     yield {
       type: MetonaStreamEventType.DONE,
       requestId: request.meta.requestId,
       sessionId: request.meta.sessionId,
       iteration: request.meta.iteration,
-      seq: 0,
+      seq: 1,
       timestamp: Date.now(),
     } as MetonaStreamEvent;
   })();
@@ -314,8 +326,10 @@ describe('TaskOrchestrator — 中断契约', () => {
 
     releases.forEach((r) => r());
     const results = await Promise.all([a, b]);
-    // A 被中断、B 正常完成，两者都最终收尾
+    // A 被中断、B 正常完成，两者都最终收尾。
-    expect(results.map((r) => r.success)).toEqual([true, true]);
+    // v0.8.0 P0-2 abort 优先级修复后：被中断的 A 以 USER_INTERRUPT 终止 →
+    // success=false（旧实现 COMPLETED 抢占使 A 误报 success=true，属缺陷语义）。
+    expect(results.map((r) => r.success)).toEqual([false, true]);
     expect(orchestrator.getActiveAgentsStatus()).toHaveLength(0);
   });
 

electron/harness/orchestration/orchestrator.ts

@@ -129,6 +129,12 @@ export class TaskOrchestrator extends EventEmitter {
     parentSessionId: string;
     maxIterations?: number;
     tools?: string[];
+    /**
+     * v0.8.0 P1-2: 引擎级取消信号 —— delegate_task 工具透传 context.signal，
+     * 用户中断父会话时 SubEngine 联动终止（此前工具被 registry 兜底超时杀掉，
+     * SubEngine 仍在后台跑满剩余轮次）。
+     */
+    signal?: AbortSignal;
   }): Promise<SubAgentResult> {
     const taskId = params.taskId ?? `sub_${nanoid(8)}`;
     const startMs = Date.now();
@@ -183,6 +189,18 @@ export class TaskOrchestrator extends EventEmitter {
     subEngine.setFallbackAdapter(this.engines.getFallbackAdapter());
     subEngine.setWorkspacePath(this.engines.getWorkspacePath());
 
+    // v0.8.0 P1-2: 外部取消信号联动 —— signal 已中止或运行中触发 abort 时
+    // 终止 SubEngine；finally 中解除监听防泄漏
+    let onExternalAbort: (() => void) | null = null;
+    if (params.signal) {
+      if (params.signal.aborted) {
+        subEngine.abort();
+      } else {
+        onExternalAbort = () => subEngine.abort();
+        params.signal.addEventListener('abort', onExternalAbort, { once: true });
+      }
+    }
+
     // v0.5.0: 转发 SubEngine 的流式/状态事件（供 TRACE 录制与前端可观测）
     // 事件以 taskId 为 sessionId，录制到独立 JSONL 文件，不污染父会话的流
     this.forwardSubEngineEvents(subEngine, taskId);
@@ -283,6 +301,10 @@ export class TaskOrchestrator extends EventEmitter {
 
       return result;
     } finally {
+      // v0.8.0 P1-2: 解除外部取消信号监听（防事件循环泄漏）
+      if (params.signal && onExternalAbort) {
+        params.signal.removeEventListener('abort', onExternalAbort);
+      }
       // #5 修复: 统一在 finally 块恢复 sessionDepth，覆盖正常完成/异常/abort 所有路径
       // 审查修复: 如果 abortAll 已 clear sessionDepth，不再恢复（避免覆盖紧急清理）。
       // 场景：用户紧急中断时 abortAll 先 clear，若 SubEngine 随后才返回执行 finally，

electron/harness/tools/__tests__/registry.test.ts

@@ -104,16 +104,13 @@ describe('ToolRegistry.truncateResult', () => {
     expect(truncate(shot)).toBe(shot);
   });
 
-  it('WEBP 魔数（RIFF....WEBP）的裸 base64 放行', () => {
+  it('WEBP 魔数（RIFF....WEBP）的裸 base64 放行（v0.8.0 P3: 单向断言替代恒真分支）', () => {
-    const shot = { image: `UklGRg==${'A'.repeat(200_000)}WEBP` };
+    // v0.8.0 P3 根治: 旧断言按 _truncated 分支双向放行（无论实现如何都通过，恒真）。
-    // RIFF 头 base64 'UklGRg==' 解码为 'RIFF\x00\x00\x00\x00'，WEBP 魔数在 8-11 字节
+    // 现构造 8-11 字节确为 'WEBP' 的确定性载荷：base64('RIFF\0\0\0\0WEBP') 前缀，
-    const result = truncate(shot) as { image?: string; _truncated?: boolean };
+    // isInlineImagePayload 必命中白名单 → 整段放行。
-    if (result._truncated === true) {
+    const head = Buffer.from('RIFF\0\0\0\0WEBP', 'latin1').toString('base64');
-      // WEBP 魔数未命中（base64 头部 64 字节内未含完整 RIFF+WEBP）→ 走常规截断（保守）
+    const shot = { image: head + 'A'.repeat(200_000) };
-      expect(result.image).toBeUndefined();
+    expect(truncate(shot)).toBe(shot);
-    } else {
-      expect(result).toBe(shot);
-    }
   });
 
   it('image 字段但非图片内容（普通长文本）仍按常规 50KB 截断（堵住旧白名单漏洞）', () => {

electron/harness/tools/built-in/__tests__/filesystem-tools.test.ts

@@ -248,22 +248,25 @@ describe('filesystem 工具 — read_file', () => {
     expect(String(r.content).charCodeAt(0)).not.toBe(0xfeff);
   });
 
-  it('UTF-16LE 文件被二进制检测拒绝（0x00 字节触发，编码探测死代码）', async () => {
+  it('UTF-16LE 文件正常读取（v0.8.0 P1-3.3 BOM 检测根治后契约）', async () => {
-    // 已知源码缺陷：isBinaryFile 的 NUL 字节检测拒绝一切 UTF-16 文件，
+    // v0.8.0 P1-3.3 根治: isBinaryFile 此前的 NUL 字节启发式拒绝一切 UTF-16
-    // decodeBufferWithDetection 的 UTF-16 分支因此不可达。此处锁定实际契约。
+    // 文件，decodeBufferWithDetection 的 UTF-16 分支不可达（原缺陷被本测试
+    // 锁定留档）。现 UTF-16 BOM（FF FE / FE FF）视为文本，编码探测生效。
     const r = (await tool.execute({ file_path: 'utf16le.txt' }, ctxFor(ws))) as {
       success: boolean;
-      error?: string;
+      content?: string;
+      encoding?: string;
     };
-    expect(r.success).toBe(false);
+    expect(r.success).toBe(true);
-    expect(String((r as { error?: string }).error)).toContain('Binary');
+    expect(r.encoding).toBe('utf-16le');
   });
 
-  it('UTF-16BE 文件同样被二进制检测拒绝（实况契约）', async () => {
+  it('UTF-16BE 文件正常读取（v0.8.0 P1-3.3）', async () => {
     const r = (await tool.execute({ file_path: 'utf16be.txt' }, ctxFor(ws))) as {
       success: boolean;
+      content?: string;
     };
-    expect(r.success).toBe(false);
+    expect(r.success).toBe(true);
   });
 
   it('GBK 字节样本 → 降级 gbk 编码并正确解码', async () => {

electron/harness/tools/built-in/browser-window-manager.ts

@@ -11,6 +11,9 @@ import { BrowserWindow, session } from 'electron';
 import log from 'electron-log';
 // v0.7.3 P2-2: CORS Origin 回显（纯函数在 network-utils，可表测）
 import { corsAllowOrigin, extractOriginHeader } from './network-utils';
+// v0.8.0 P1-4: 浏览器通道 SSRF 根治 —— 分区流量走本地 Pinned CONNECT 代理
+import { ensurePinnedProxy } from '../../../utils/pinned-proxy';
+import { isProxyActive } from '../../../utils/network-proxy';
 
 /** Agent 浏览器专用 session partition — 与主应用 default session 完全隔离 */
 const AGENT_PARTITION = 'persist:metona-agent-browser';
@@ -146,6 +149,28 @@ export class BrowserWindowManager {
       // 跨域 Origin / 无 Origin 一律不加 ACAO 头 —— 保持默认同源策略阻止读取，
       // 彻底堵死"第三方页面借该分区凭据读取跨域资源"的通道。
       const agentSession = session.fromPartition(AGENT_PARTITION);
+
+      // v0.8.0 P1-4 根治: 浏览器通道 SSRF —— 分区全部流量经本地 Pinned CONNECT
+      // 代理（入口同源校验 + 校验期 IP pinning，Chromium 端 TLS/SNI 端到端不变），
+      // 关闭"入口校验通过 → Chromium 独立 DNS 解析"之间的 rebinding 残余窗口。
+      // 用户已显式配置 network.proxyUrl 时不启用（代理模式下 DNS 在代理端解析、
+      // pinning 不可实现，保持 M7 已知限制口径）；代理启动失败降级可用性优先。
+      if (!isProxyActive()) {
+        const proxyPort = await ensurePinnedProxy();
+        if (proxyPort) {
+          try {
+            await agentSession.setProxy({
+              proxyRules: `http=127.0.0.1:${proxyPort};https=127.0.0.1:${proxyPort}`,
+            });
+            log.info(
+              `[BrowserWindowManager] agent partition routed via pinned proxy :${proxyPort}`,
+            );
+          } catch (err) {
+            log.warn('[BrowserWindowManager] pinned proxy setProxy failed:', err);
+          }
+        }
+      }
+
       agentSession.webRequest.onHeadersReceived((details, callback) => {
         // Electron 类型在此版本的 OnHeadersReceivedListenerDetails 上不暴露
         // requestHeaders —— 显式声明读取面（Origin 大小写不敏感提取）
@@ -308,12 +333,35 @@ export class BrowserWindowManager {
    * 各自直接 open/evaluate 共享单例，后到者销毁前者的窗口（崩溃根因，
    * 见 openChain 注释）。排队后同一时刻只有一个抓取在使用窗口。
    *
+   * v0.8.0 P1-2: 新增可选 abort signal —— 中断时停止页面加载（webContents.stop）
+   * 并在序列各步骤间检查，终止整个 open→等待→evaluate 链。
+   *
    * @returns 提取的页面正文；失败/内容过短返回 null（调用方走失败路径）
    */
-  async fetchPageText(url: string): Promise<string | null> {
+  async fetchPageText(url: string, signal?: AbortSignal): Promise<string | null> {
     const run = async (): Promise<string | null> => {
+      const throwIfAborted = (): void => {
+        if (signal?.aborted) throw new Error('Browser fetch aborted');
+      };
+      // abort 时停止页面加载 —— loadURL/evaluate 会以 ERR_ABORTED 拒绝，
+      // 序列随之终止（窗口由单例管理，不在此销毁）
+      let onAbort: (() => void) | null = null;
+      if (signal && !signal.aborted) {
+        onAbort = () => {
+          try {
+            this.win?.webContents.stop();
+          } catch {
+            /* 窗口可能已销毁 */
+          }
+        };
+        signal.addEventListener('abort', onAbort, { once: true });
+      }
+      try {
+        throwIfAborted();
         await this.openInternal({ url });
+        throwIfAborted();
         await this.sleep(2_500);
+        throwIfAborted();
         const text = (await this.evaluate(`
           (function() {
             var clone = document.body.cloneNode(true);
@@ -322,7 +370,11 @@ export class BrowserWindowManager {
             return clone.innerText || '';
           })();
         `)) as string;
+        throwIfAborted();
         return text && text.trim() ? text : null;
+      } finally {
+        if (signal && onAbort) signal.removeEventListener('abort', onAbort);
+      }
     };
     this.openChain = this.openChain.then(run, run);
     return this.openChain as Promise<string | null>;

electron/harness/tools/built-in/code-search.ts

@@ -40,7 +40,8 @@ export class CodeSearchTool implements IMetonaTool {
 
   readonly definition: MetonaToolDef = {
     name: 'code_search',
-    description: 'Search code using ripgrep. Supports regex patterns, file type filtering, and context lines. Much faster than search_files for large codebases. Falls back to JS implementation if ripgrep is not installed.',
+    description:
+      'Search code using ripgrep. Supports regex patterns, file type filtering, and context lines. Much faster than search_files for large codebases. Falls back to JS implementation if ripgrep is not installed.',
     parameters: {
       type: 'object',
       properties: {
@@ -48,8 +49,14 @@ export class CodeSearchTool implements IMetonaTool {
         path: { type: 'string', description: 'Search directory (default: workspace root)' },
         file_glob: { type: 'string', description: 'File name glob filter (e.g., "*.ts", "*.py")' },
         case_sensitive: { type: 'boolean', description: 'Case sensitive search (default false)' },
-        context_before: { type: 'number', description: 'Lines of context before match (default 0, max 5)' },
+        context_before: {
-        context_after: { type: 'number', description: 'Lines of context after match (default 0, max 5)' },
+          type: 'number',
+          description: 'Lines of context before match (default 0, max 5)',
+        },
+        context_after: {
+          type: 'number',
+          description: 'Lines of context after match (default 0, max 5)',
+        },
         max_results: { type: 'number', description: 'Maximum results (default 50, max 200)' },
       },
       required: ['pattern'],
@@ -98,7 +105,13 @@ export class CodeSearchTool implements IMetonaTool {
   private async searchWithRipgrep(
     pattern: string,
     searchPath: string,
-    opts: { fileGlob?: string; caseSensitive: boolean; contextBefore: number; contextAfter: number; maxResults: number },
+    opts: {
+      fileGlob?: string;
+      caseSensitive: boolean;
+      contextBefore: number;
+      contextAfter: number;
+      maxResults: number;
+    },
     context: ToolExecutionContext,
   ): Promise<unknown> {
     const rgArgs: string[] = ['--json'];
@@ -118,12 +131,31 @@ export class CodeSearchTool implements IMetonaTool {
       const { stdout } = await execFileAsync('rg', rgArgs, {
         maxBuffer: 10 * 1024 * 1024,
         timeout: 25_000,
+        // v0.8.0 P1-2: 引擎级 abort 信号 —— 用户中断会话时立即 kill rg 子进程
+        //（Node execFile 原生支持 signal 选项，触发时以 AbortError 拒绝）
+        signal: context.signal,
       });
 
       const results = this.parseRipgrepJsonOutput(stdout);
-      return { results: results.slice(0, opts.maxResults), count: results.length, engine: 'ripgrep' };
+      return {
+        results: results.slice(0, opts.maxResults),
+        count: results.length,
+        engine: 'ripgrep',
+      };
     } catch (error) {
-      const err = error as { code?: number; signal?: string; stdout?: string; stderr?: string; killed?: boolean; message?: string };
+      const err = error as {
+        code?: number;
+        signal?: string;
+        stdout?: string;
+        stderr?: string;
+        killed?: boolean;
+        message?: string;
+        name?: string;
+      };
+      // v0.8.0 P1-2: 引擎 abort → 直接以中断语义返回（不再回退 JS 搜索）
+      if (err.name === 'AbortError' || context.signal?.aborted) {
+        return { results: [], count: 0, error: 'Search aborted', engine: 'ripgrep', aborted: true };
+      }
       // rg 退出码 1 = 无匹配，不是错误
       if (err.code === 1) {
         return { results: [], count: 0, engine: 'ripgrep' };
@@ -148,10 +180,24 @@ export class CodeSearchTool implements IMetonaTool {
     before?: string[];
     after?: string[];
   }> {
-    const results: Array<{ path: string; line: number; column: number; match: string; before?: string[]; after?: string[] }> = [];
+    const results: Array<{
+      path: string;
+      line: number;
+      column: number;
+      match: string;
+      before?: string[];
+      after?: string[];
+    }> = [];
     const lines = output.split('\n').filter((l) => l.trim());
 
-    let currentMatch: { path: string; line: number; column: number; match: string; before?: string[]; after?: string[] } | null = null;
+    let currentMatch: {
+      path: string;
+      line: number;
+      column: number;
+      match: string;
+      before?: string[];
+      after?: string[];
+    } | null = null;
     let beforeBuffer: string[] = [];
     let afterBuffer: string[] = [];
 
@@ -185,7 +231,9 @@ export class CodeSearchTool implements IMetonaTool {
         }
 
         const text = (data.lines as { text?: string } | undefined)?.text ?? '';
-        const submatches = (data.submatches as Array<{ match: { text?: string }; start?: number }> | undefined) ?? [];
+        const submatches =
+          (data.submatches as Array<{ match: { text?: string }; start?: number }> | undefined) ??
+          [];
         const matchText = submatches[0]?.match?.text ?? text;
         const column = (submatches[0]?.start ?? 0) + 1;
 
@@ -214,18 +262,33 @@ export class CodeSearchTool implements IMetonaTool {
   private async searchWithJs(
     pattern: string,
     searchPath: string,
-    opts: { fileGlob?: string; caseSensitive: boolean; contextBefore: number; contextAfter: number; maxResults: number },
+    opts: {
+      fileGlob?: string;
+      caseSensitive: boolean;
+      contextBefore: number;
+      contextAfter: number;
+      maxResults: number;
+    },
     context: ToolExecutionContext,
   ): Promise<unknown> {
     // 动态导入以避免循环依赖
     const { SearchFilesTool } = await import('./filesystem');
     const searchTool = new SearchFilesTool();
-    return searchTool.execute({
+    // v0.8.0 P1-3.5 根治: 回退路径此前静默丢失 case_sensitive / context_before /
+    // context_after —— 同一调用在 ripgrep 存在与否会产生不同结果（行为不对称）。
+    // SearchFilesTool 现已支持这三个参数（filesystem.ts P1-3.5），原样透传。
+    return searchTool.execute(
+      {
         pattern,
         target: 'content',
         path: searchPath,
         file_glob: opts.fileGlob,
         limit: opts.maxResults,
-    }, context);
+        case_sensitive: opts.caseSensitive,
+        context_before: opts.contextBefore,
+        context_after: opts.contextAfter,
+      },
+      context,
+    );
   }
 }

electron/harness/tools/built-in/delegate-task.ts

@@ -15,18 +15,21 @@ import type { TaskOrchestrator } from '../../orchestration/orchestrator';
 export class DelegateTaskTool implements IMetonaTool {
   readonly definition: MetonaToolDef = {
     name: 'delegate_task',
-    description: 'Delegate a sub-task to an independent SubAgent for parallel or isolated execution. The SubAgent runs its own ReAct loop and returns the final result. Use this for complex sub-tasks that benefit from focused reasoning.',
+    description:
+      'Delegate a sub-task to an independent SubAgent for parallel or isolated execution. The SubAgent runs its own ReAct loop and returns the final result. Use this for complex sub-tasks that benefit from focused reasoning.',
     parameters: {
       type: 'object',
       properties: {
         description: {
           type: 'string',
-          description: 'Clear and detailed description of the sub-task to delegate. This will be the SubAgent\'s user message.',
+          description:
+            "Clear and detailed description of the sub-task to delegate. This will be the SubAgent's user message.",
         },
         tools: {
           type: 'array',
           items: { type: 'string', description: 'Tool name' },
-          description: 'Optional whitelist of tool names the SubAgent can use (e.g. ["read_file", "web_search"]). If omitted, SubAgent inherits all tools.',
+          description:
+            'Optional whitelist of tool names the SubAgent can use (e.g. ["read_file", "web_search"]). If omitted, SubAgent inherits all tools.',
         },
         maxIterations: {
           type: 'number',
@@ -58,6 +61,8 @@ export class DelegateTaskTool implements IMetonaTool {
         parentSessionId: context.sessionId,
         maxIterations,
         tools,
+        // v0.8.0 P1-2: 引擎级 abort 信号透传 —— 用户中断会话时联动终止 SubAgent
+        signal: context.signal,
       });
 
       return {

electron/harness/tools/built-in/file-editor.ts

@@ -19,6 +19,7 @@
 import { readFile, writeFile, rename, mkdir, stat, unlink } from 'fs/promises';
 import { dirname } from 'path';
 import { existsSync } from 'fs';
+import { nanoid } from 'nanoid';
 import type { IMetonaTool, ToolExecutionContext } from '../../types/metona-tool';
 import type { MetonaToolDef } from '../../../harness/types';
 import { MetonaToolCategory, MetonaRiskLevel } from '../../../harness/types';
@@ -422,7 +423,8 @@ export class FileEditorTool implements IMetonaTool {
 
       const newContent = newLines.join('\n');
       // F1.7: 原子写入 - 临时文件 + rename
-      const tmpPath = `${filePath}.tmp_${Date.now()}`;
+      // v0.8.0 P1-3.4: tmp 文件名追加 nanoid 随机段（同毫秒并发写防碰撞）
+      const tmpPath = `${filePath}.tmp_${Date.now()}_${nanoid(6)}`;
       try {
         await writeFile(tmpPath, newContent, 'utf-8');
         await rename(tmpPath, filePath);

electron/harness/tools/built-in/filesystem.ts

@@ -38,6 +38,7 @@ import {
 } from 'fs/promises';
 import { join, relative, resolve, dirname } from 'path';
 import { existsSync, realpathSync } from 'fs';
+import { nanoid } from 'nanoid';
 import type { IMetonaTool, ToolExecutionContext } from '../../types/metona-tool';
 import type { MetonaToolDef } from '../../../harness/types';
 import { MetonaToolCategory, MetonaRiskLevel } from '../../../harness/types';
@@ -61,6 +62,13 @@ import {
  * v0.3.2 修复 FAIL: 使用 bytesRead 限制循环上界，而非 buffer.length。
  * Buffer.alloc(8192) 初始化为全 0，fd.read 只覆盖 [0, bytesRead) 区间，
  * 若用 buffer.length 遍历会误判所有 < 8192 字节的纯文本文件为二进制。
+ *
+ * v0.8.0 P1-3.3 根治: UTF-16 文件（LE: FF FE / BE: FE FF BOM）几乎每个字符
+ * 都含 0x00 字节 —— NULL 字节启发式把一切 UTF-16 文本判为二进制并整体拒绝，
+ * 使 decodeBufferWithDetection 的 UTF-16 解码分支不可达（原缺陷被
+ * filesystem-tools.test.ts 锁定留档，本次随修复同步改约）。现先检测 UTF-16
+ * BOM：命中即视为文本（UTF-16 解码由 decodeBufferWithDetection 承担），
+ * 未命中 BOM 才走 NULL 字节启发式。
  */
 async function isBinaryFile(filePath: string): Promise<boolean> {
   // M-20 修复: 使用 finally 块确保文件句柄关闭，防止 fd 泄漏
@@ -69,6 +77,9 @@ async function isBinaryFile(filePath: string): Promise<boolean> {
     const buffer = Buffer.alloc(8192);
     fd = await open(filePath, 'r');
     const { bytesRead } = await fd.read(buffer, 0, 8192, 0);
+    // v0.8.0 P1-3.3: UTF-16 LE/BE BOM → 文本（NUL 启发式对其无效）
+    if (bytesRead >= 2 && buffer[0] === 0xff && buffer[1] === 0xfe) return false; // UTF-16 LE BOM
+    if (bytesRead >= 2 && buffer[0] === 0xfe && buffer[1] === 0xff) return false; // UTF-16 BE BOM
     // 仅检查实际读取的字节范围 [0, bytesRead)
     // 含 NULL 字节 → 二进制；空文件（bytesRead=0）→ 非二进制
     for (let i = 0; i < bytesRead; i++) {
@@ -346,7 +357,9 @@ export class WriteFileTool implements IMetonaTool {
       }
 
       // v0.3.2: overwrite 模式使用原子写入（临时文件 + rename，与 file_editor 一致）
-      const tmpPath = `${filePath}.tmp_${Date.now()}`;
+      // v0.8.0 P1-3.4: tmp 文件名追加 nanoid 随机段 —— 同毫秒并发写同一文件时
+      // Date.now() 精度的 tmp 名会互相覆盖（并行工具调用场景）
+      const tmpPath = `${filePath}.tmp_${Date.now()}_${nanoid(6)}`;
       try {
         await writeFile(tmpPath, content, 'utf-8');
         await rename(tmpPath, filePath);
@@ -395,6 +408,11 @@ export class ListDirectoryTool implements IMetonaTool {
           type: 'boolean',
           description: 'Include hidden files/dirs starting with "." (default false)',
         },
+        include_node_modules: {
+          type: 'boolean',
+          description:
+            'Include node_modules directories (default false — skipped for performance; set true to inspect dependency packages)',
+        },
       },
     },
     category: MetonaToolCategory.FILESYSTEM,
@@ -411,6 +429,8 @@ export class ListDirectoryTool implements IMetonaTool {
       const depth = Math.min(5, Math.max(1, (args.depth as number) ?? 1));
       const glob = args.glob as string | undefined;
       const includeHidden = (args.include_hidden as boolean) ?? false;
+      // v0.8.0 P1-3.6: node_modules 可选纳入（默认跳过保持兼容）
+      const includeNodeModules = (args.include_node_modules as boolean) ?? false;
 
       // v0.3.2 修复 WARN-3: listDir 内部提前终止，避免大目录全量遍历
       const MAX_ENTRIES = 1000;
@@ -421,7 +441,17 @@ export class ListDirectoryTool implements IMetonaTool {
         size?: number;
         modified?: string;
       }> = [];
-      await this.listDir(dirPath, dirPath, depth, glob, includeHidden, 0, entries, MAX_ENTRIES);
+      await this.listDir(
+        dirPath,
+        dirPath,
+        depth,
+        glob,
+        includeHidden,
+        includeNodeModules,
+        0,
+        entries,
+        MAX_ENTRIES,
+      );
       return {
         entries,
         count: entries.length,
@@ -439,6 +469,7 @@ export class ListDirectoryTool implements IMetonaTool {
     maxDepth: number,
     glob: string | undefined,
     includeHidden: boolean,
+    includeNodeModules: boolean,
     currentDepth: number,
     results: Array<{ name: string; path: string; type: string; size?: number; modified?: string }>,
     maxEntries: number,
@@ -453,8 +484,9 @@ export class ListDirectoryTool implements IMetonaTool {
         if (results.length >= maxEntries) return;
         // v0.3.2: include_hidden 参数控制隐藏文件
         if (!includeHidden && entry.name.startsWith('.')) continue;
-        // node_modules 始终跳过（太大）
+        // v0.8.0 P1-3.6: node_modules 默认跳过（太大）；include_node_modules=true
-        if (entry.name === 'node_modules') continue;
+        // 时纳入（分析依赖包场景；上限保护仍生效）
+        if (entry.name === 'node_modules' && !includeNodeModules) continue;
 
         const fullPath = join(dirPath, entry.name);
         // 相对路径始终以根请求目录为基准
@@ -470,6 +502,7 @@ export class ListDirectoryTool implements IMetonaTool {
               maxDepth,
               glob,
               includeHidden,
+              includeNodeModules,
               currentDepth + 1,
               results,
               maxEntries,
@@ -526,6 +559,19 @@ export class SearchFilesTool implements IMetonaTool {
           description:
             'Lines of context to show around content matches (default 0, max 5). Only for target="content".',
         },
+        case_sensitive: {
+          type: 'boolean',
+          description:
+            'Case sensitive search (default false — v0.8.0 P1-3.5: previously hardcoded case-insensitive, breaking code_search fallback symmetry)',
+        },
+        context_before: {
+          type: 'number',
+          description: 'Lines of context before match (default = context_lines, max 5)',
+        },
+        context_after: {
+          type: 'number',
+          description: 'Lines of context after match (default = context_lines, max 5)',
+        },
         include_hidden: {
           type: 'boolean',
           description: 'Include hidden files/dirs starting with "." (default false)',
@@ -549,6 +595,15 @@ export class SearchFilesTool implements IMetonaTool {
       const fileGlob = args.file_glob as string | undefined;
       const limit = Math.min(200, Math.max(1, (args.limit as number) ?? 50));
       const contextLines = Math.min(5, Math.max(0, (args.context_lines as number) ?? 0));
+      // v0.8.0 P1-3.5: 与 code_search 参数对称 —— case_sensitive 此前被硬编码
+      // 'gi' 忽略；context_before/after 此前在 code_search JS 回退路径静默丢失。
+      // 缺省时回退 context_lines（向后兼容）。
+      const caseSensitive = (args.case_sensitive as boolean) ?? false;
+      const contextBefore = Math.min(
+        5,
+        Math.max(0, (args.context_before as number) ?? contextLines),
+      );
+      const contextAfter = Math.min(5, Math.max(0, (args.context_after as number) ?? contextLines));
       const includeHidden = (args.include_hidden as boolean) ?? false;
 
       if (target === 'files') {
@@ -566,7 +621,9 @@ export class SearchFilesTool implements IMetonaTool {
         pattern,
         fileGlob,
         limit,
-        contextLines,
+        contextBefore,
+        contextAfter,
+        caseSensitive,
         includeHidden,
         context.workspacePath,
       );
@@ -606,7 +663,9 @@ export class SearchFilesTool implements IMetonaTool {
     pattern: string,
     fileGlob: string | undefined,
     limit: number,
-    contextLines: number,
+    contextBefore: number,
+    contextAfter: number,
+    caseSensitive: boolean,
     includeHidden: boolean,
     workspacePath: string,
   ): Promise<unknown> {
@@ -635,7 +694,8 @@ export class SearchFilesTool implements IMetonaTool {
     }
     let regex: RegExp;
     try {
-      regex = new RegExp(pattern, 'gi');
+      // v0.8.0 P1-3.5: case_sensitive 参数生效（此前硬编码 'gi' 恒大小写不敏感）
+      regex = new RegExp(pattern, caseSensitive ? 'g' : 'gi');
     } catch {
       return { results: [], count: 0, error: `Invalid regex pattern: ${pattern}`, success: false };
     }
@@ -668,10 +728,11 @@ export class SearchFilesTool implements IMetonaTool {
             if (regex.test(lines[i])) {
               const match = lines[i].trim().slice(0, 200);
               // v0.3.2: context lines 支持
+              // v0.8.0 P1-3.5: 前后文行数独立（code_search 对称性）
               let context: string[] | undefined;
-              if (contextLines > 0) {
+              if (contextBefore > 0 || contextAfter > 0) {
-                const start = Math.max(0, i - contextLines);
+                const start = Math.max(0, i - contextBefore);
-                const end = Math.min(lines.length - 1, i + contextLines);
+                const end = Math.min(lines.length - 1, i + contextAfter);
                 context = lines.slice(start, end + 1);
               }
               results.push({

electron/harness/tools/built-in/git.ts

@@ -28,18 +28,23 @@ const MAX_DIFF_SIZE = 50 * 1024;
  *
  * v0.3.1 修复 WARN-4: 允许调用方覆盖 maxBuffer，默认 1MB；
  * git_diff 传 5MB 以支持超大变更集（避免 maxBuffer exceeded 报错而非截断返回）。
+ *
+ * v0.8.0 P1-2: 新增可选 signal —— 引擎中断（用户停止/超时）时立即 kill git
+ * 子进程（Node execFile 原生支持 AbortSignal 选项），各工具经 context 透传。
  */
 async function runGit(
   args: string[],
   cwd: string,
   timeout = 10_000,
   maxBuffer = 1024 * 1024, // 默认 1MB
+  signal?: AbortSignal,
 ): Promise<string> {
   const { stdout } = await execFileAsync('git', args, {
     cwd,
     maxBuffer,
     timeout,
     encoding: 'utf-8',
+    ...(signal ? { signal } : {}),
   });
   return stdout;
 }
@@ -84,11 +89,15 @@ function extractRenamedFile(file: string): string {
 export class GitStatusTool implements IMetonaTool {
   readonly definition: MetonaToolDef = {
     name: 'git_status',
-    description: 'Show the working tree status. Returns current branch, ahead/behind counts, and lists of staged, unstaged, and untracked files.',
+    description:
+      'Show the working tree status. Returns current branch, ahead/behind counts, and lists of staged, unstaged, and untracked files.',
     parameters: {
       type: 'object',
       properties: {
-        pathspec: { type: 'string', description: 'Limit to a path scope, e.g. "src/" or "package.json"' },
+        pathspec: {
+          type: 'string',
+          description: 'Limit to a path scope, e.g. "src/" or "package.json"',
+        },
       },
     },
     category: MetonaToolCategory.FILESYSTEM,
@@ -191,11 +200,15 @@ export class GitStatusTool implements IMetonaTool {
 export class GitDiffTool implements IMetonaTool {
   readonly definition: MetonaToolDef = {
     name: 'git_diff',
-    description: 'Show changes between the working tree and the index (or staged changes). Returns unified diff text. Output is truncated at 50KB.',
+    description:
+      'Show changes between the working tree and the index (or staged changes). Returns unified diff text. Output is truncated at 50KB.',
     parameters: {
       type: 'object',
       properties: {
-        cached: { type: 'boolean', description: 'Show only staged (cached) changes (default false)' },
+        cached: {
+          type: 'boolean',
+          description: 'Show only staged (cached) changes (default false)',
+        },
         pathspec: { type: 'string', description: 'Limit to a path scope, e.g. "src/"' },
         contextLines: { type: 'number', description: 'Number of context lines (default 3)' },
       },
@@ -269,7 +282,8 @@ export class GitDiffTool implements IMetonaTool {
 export class GitLogTool implements IMetonaTool {
   readonly definition: MetonaToolDef = {
     name: 'git_log',
-    description: 'Show commit history. Returns commits with hash, message, and optionally author/date. Supports filtering by author and path.',
+    description:
+      'Show commit history. Returns commits with hash, message, and optionally author/date. Supports filtering by author and path.',
     parameters: {
       type: 'object',
       properties: {
@@ -357,17 +371,25 @@ export class GitLogTool implements IMetonaTool {
 export class GitCommitTool implements IMetonaTool {
   readonly definition: MetonaToolDef = {
     name: 'git_commit',
-    description: 'Stage files and create a git commit. Supports amending the previous commit. In amend mode, message is optional (omitting it keeps the original commit message). Requires user confirmation.',
+    description:
+      'Stage files and create a git commit. Supports amending the previous commit. In amend mode, message is optional (omitting it keeps the original commit message). Requires user confirmation.',
     parameters: {
       type: 'object',
       properties: {
-        message: { type: 'string', description: 'Commit message. Required for new commits. Optional in amend mode (omitting keeps original message).' },
+        message: {
+          type: 'string',
+          description:
+            'Commit message. Required for new commits. Optional in amend mode (omitting keeps original message).',
+        },
         files: {
           type: 'array',
           items: { type: 'string', description: 'File path to stage' },
           description: 'Files to stage (default: all changes via git add -A)',
         },
-        amend: { type: 'boolean', description: 'Amend the previous commit instead of creating a new one (default false)' },
+        amend: {
+          type: 'boolean',
+          description: 'Amend the previous commit instead of creating a new one (default false)',
+        },
       },
       // F1-3: message 不再硬性 required — amend 模式下可省略（保留原 message）
       // 校验在 execute 内根据 amend 标志动态进行
@@ -385,11 +407,17 @@ export class GitCommitTool implements IMetonaTool {
 
     // F1-3: 非 amend 模式必须有 message；amend 模式可省略（保留原 message）
     if (!amend && (!message || message.trim().length === 0)) {
-      return { success: false, error: 'Commit message is required (use amend: true to reuse the previous message)' };
+      return {
+        success: false,
+        error: 'Commit message is required (use amend: true to reuse the previous message)',
+      };
     }
     // amend 模式下若提供 message，需校验非空字符串
     if (amend && message !== undefined && message.trim().length === 0) {
-      return { success: false, error: 'Commit message must not be empty (or omit message field to keep original)' };
+      return {
+        success: false,
+        error: 'Commit message must not be empty (or omit message field to keep original)',
+      };
     }
 
     try {
@@ -402,7 +430,10 @@ export class GitCommitTool implements IMetonaTool {
             return {
               success: false,
               error: `File path outside workspace: ${f}`,
-              commit: '', branch: '', message: '', filesChanged: 0,
+              commit: '',
+              branch: '',
+              message: '',
+              filesChanged: 0,
             };
           }
         }

electron/harness/tools/built-in/http-request.ts

@@ -82,7 +82,7 @@ export class HttpRequestTool implements IMetonaTool {
     timeoutMs: 30_000,
   };
 
-  async execute(args: Record<string, unknown>, _context: ToolExecutionContext): Promise<unknown> {
+  async execute(args: Record<string, unknown>, context: ToolExecutionContext): Promise<unknown> {
     try {
       const url = args.url as string;
       const method = ((args.method as string) ?? 'GET').toUpperCase();
@@ -127,7 +127,9 @@ export class HttpRequestTool implements IMetonaTool {
 
         // v0.7.3 P2-1: pinned fetch —— 校验通过的 IP pin 到连接层，
         // 关闭校验-连接之间的 DNS rebinding 窗口
-        const response = await ssrfPinnedFetch(url, fetchOptions, timeout);
+        // v0.8.0 P1-2: 第 4 参透传引擎级 abort signal —— 用户中断会话时底层
+        // fetch 立即取消（此前最长 60s 资源悬挂）
+        const response = await ssrfPinnedFetch(url, fetchOptions, timeout, context.signal);
         const text = await response.text();
 
         // 截断到 50KB

electron/harness/tools/built-in/network-utils.ts

@@ -83,13 +83,23 @@ export async function fetchWithTimeout(
   url: string,
   options: RequestInit = {},
   timeoutMs = 20_000,
+  externalSignal?: AbortSignal,
 ): Promise<Response> {
+  // v0.8.0 P1-2: 合并外部 abort 信号（引擎中断时立即取消，不再跑到自身超时）
   const controller = new AbortController();
+  const onExternalAbort = (): void => controller.abort();
+  if (externalSignal) {
+    if (externalSignal.aborted) controller.abort();
+    else externalSignal.addEventListener('abort', onExternalAbort, { once: true });
+  }
   const timer = setTimeout(() => controller.abort(), timeoutMs);
   try {
     return await fetch(url, { ...options, signal: controller.signal });
   } finally {
     clearTimeout(timer);
+    if (externalSignal) {
+      externalSignal.removeEventListener('abort', onExternalAbort);
+    }
   }
 }
 

electron/harness/tools/built-in/ssrf-guard.ts

@@ -17,6 +17,12 @@
 import { lookup } from 'node:dns/promises';
 import { isIP } from 'node:net';
 
+/**
+ * v0.8.0 P1-5: DNS lookup 可替换点 —— 生产恒为 node:dns/promises 的 lookup；
+ * 测试通过替换 current 注入受控解析结果（ESM namespace 只读，无法直接打桩）。
+ */
+export const __dnsLookup: { current: typeof lookup } = { current: lookup };
+
 /**
  * 检查 IP 是否为私有/内网/回环/元数据地址
  *
@@ -98,7 +104,7 @@ export async function resolvePublicAddresses(url: string): Promise<string[]> {
   // 域名 — DNS 解析后检测所有 IP
   let addresses: Array<{ address: string }>;
   try {
-    addresses = await lookup(hostname, { all: true });
+    addresses = await __dnsLookup.current(hostname, { all: true });
   } catch (err) {
     throw new Error(
       `Blocked SSRF: DNS resolution failed for ${hostname}: ${(err as Error).message}`,
@@ -231,3 +237,85 @@ export function assertSafeConfigTarget(url: string): void {
   }
   // 域名（非 IP）：允许（DNS 可能解析到内网，但用户显式配置的本地服务是合法场景）
 }
+
+/**
+ * v0.8.0 P1-5: 配置类 URL 的**深校验** —— 在 assertSafeConfigTarget 的静态规则
+ * 之上对域名做真实 DNS 解析，任一解析结果命中高危段（链路本地/云元数据、0/8、
+ * 组播保留、::ffff: 映射等价段）即拒绝。
+ *
+ * 与 assertSafeConfigTarget 的差异：后者对"域名放行"（不解析 DNS，本地实例
+ * 域名合法）；本函数补上"域名解析到云元数据 IP"的绕过窗口
+ * （如 attacker.example 解析到 169.254.169.254）。
+ *
+ * 放行语义不变：127.0.0.1 / RFC1918 私网（本地 MCP/SearXNG 合法）；DNS 解析
+ * 失败也放行（配置期校验为纵深手段 —— 离线配置合法，且运行时工具路径仍有
+ * 独立校验；失败仅 WARN 由调用方留痕）。
+ *
+ * @throws 如果 URL 解析结果指向高危目标或协议不被允许
+ */
+export async function assertSafeConfigTargetDeep(url: string): Promise<void> {
+  // 先执行静态规则（协议白名单/元数据主机名/IP 字面量段位）
+  assertSafeConfigTarget(url);
+
+  let parsed: URL;
+  try {
+    parsed = new URL(url);
+  } catch {
+    return; // assertSafeConfigTarget 已抛，此处不可达（防御）
+  }
+  const rawHostname = parsed.hostname.toLowerCase();
+  // IPv6 字面量去方括号（与 assertSafeConfigTarget 同口径）
+  const hostname =
+    rawHostname.startsWith('[') && rawHostname.endsWith(']')
+      ? rawHostname.slice(1, -1)
+      : rawHostname;
+  if (isIP(hostname) !== 0) return; // IP 字面量已由静态规则判定，无需解析
+
+  let addresses: Array<{ address: string }>;
+  try {
+    addresses = await __dnsLookup.current(hostname, { all: true });
+  } catch (err) {
+    // DNS 解析失败：放行（配置期纵深校验不做可用性裁决），由调用方日志留痕
+    throw new DeepCheckSoftFailure(
+      `config target DNS resolution failed for ${hostname}: ${(err as Error).message}`,
+    );
+  }
+  for (const { address } of addresses) {
+    // 复用 isPrivateIP 的完整段位表做"高危段"判定？——不行：isPrivateIP 把
+    // 回环/RFC1918 也判为私有，而配置路径放行它们。此处仅拦"静态规则拦不到、
+    // 但解析后才暴露"的高危段：链路本地（含云元数据）、0/8、组播保留。
+    if (isHighRiskResolvedIP(address)) {
+      throw new Error(
+        `Blocked: ${hostname} resolves to high-risk address ${address} (link-local/metadata/multicast)`,
+      );
+    }
+  }
+}
+
+/** 高危段判定（仅配置深校验使用）：链路本地/0/8/组播保留，放行回环与 RFC1918 */
+function isHighRiskResolvedIP(ip: string): boolean {
+  if (isIP(ip) === 4) {
+    const parts = ip.split('.').map(Number);
+    return (parts[0] === 169 && parts[1] === 254) || parts[0] === 0 || parts[0] >= 224;
+  }
+  if (isIP(ip) === 6) {
+    const lower = ip.toLowerCase();
+    if (lower.startsWith('fe80:') || lower.startsWith('ff')) return true;
+    if (lower === '::') return true;
+    const v4MappedMatch = lower.match(/::ffff:(\d+\.\d+\.\d+\.\d+)$/);
+    if (v4MappedMatch) return isHighRiskResolvedIP(v4MappedMatch[1]);
+    return false;
+  }
+  return false;
+}
+
+/**
+ * v0.8.0 P1-5: 深校验的"软失败"信号 —— DNS 解析失败不算配置错误（放行），
+ * 但调用方需要区分"校验通过"与"跳过校验"以便日志留痕。
+ */
+export class DeepCheckSoftFailure extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = 'DeepCheckSoftFailure';
+  }
+}

electron/harness/tools/built-in/web-fetch.ts

@@ -84,7 +84,7 @@ export class WebFetchTool implements IMetonaTool {
     timeoutMs: 240_000,
   };
 
-  async execute(args: Record<string, unknown>, _context: ToolExecutionContext): Promise<unknown> {
+  async execute(args: Record<string, unknown>, context: ToolExecutionContext): Promise<unknown> {
     const url = args.url as string;
     const mobileUA = (args.mobile_ua as boolean) ?? false;
     const enableRetry = (args.retry as boolean) ?? true;
@@ -96,6 +96,11 @@ export class WebFetchTool implements IMetonaTool {
       return { url, content: '', success: false, error: 'URL must start with http:// or https://' };
     }
 
+    // v0.8.0 P1-2: abort 立即生效 —— 引擎中断（超时/用户停止）时不再继续后续阶段
+    if (context.signal?.aborted) {
+      return { url, content: '', success: false, error: 'Fetch aborted' };
+    }
+
     // v0.6.4 P2-2: SSRF 校验 —— 覆盖 Phase1 HTTP 与 Phase3 浏览器两条通道的入口。
     // 协议白名单 / 私有段 IP / 云元数据地址一律拒绝。
     try {
@@ -117,7 +122,12 @@ export class WebFetchTool implements IMetonaTool {
     logTool('web_fetch', `Fetching: ${url}`);
 
     // ===== Phase 1: HTTP 抓取 =====
-    const phase1Result = await this.httpFetch(url, mobileUA, enableRetry);
+    const phase1Result = await this.httpFetch(url, mobileUA, enableRetry, context.signal);
+
+    // v0.8.0 P1-2: HTTP 阶段被 abort —— 直接终止，不进浏览器回退
+    if (context.signal?.aborted) {
+      return { url, content: '', success: false, error: 'Fetch aborted' };
+    }
 
     if (phase1Result.success && !phase1Result.intercepted) {
       // 根据 extract_mode 选择返回内容：'html' 模式返回清理后的 HTML，'text' 模式返回纯文本
@@ -136,7 +146,7 @@ export class WebFetchTool implements IMetonaTool {
           'web_fetch',
           `Phase 2: Content too short (${phase1Content.length} chars), upgrading to browser`,
         );
-        const browserResult = await this.browserFetch(url);
+        const browserResult = await this.browserFetch(url, context.signal);
         if (browserResult) {
           return this.buildSuccess(url, browserResult, 'browser', maxChars);
         }
@@ -159,7 +169,7 @@ export class WebFetchTool implements IMetonaTool {
       };
     }
     logTool('web_fetch', `Phase 3: Falling back to browser (${phase1Result.reason})`);
-    const browserResult = await this.browserFetch(url);
+    const browserResult = await this.browserFetch(url, context.signal);
     if (browserResult) {
       return this.buildSuccess(url, browserResult, 'browser', maxChars);
     }
@@ -179,6 +189,7 @@ export class WebFetchTool implements IMetonaTool {
     url: string,
     mobileUA: boolean,
     enableRetry: boolean,
+    signal?: AbortSignal,
   ): Promise<{
     success: boolean;
     html: string;
@@ -206,7 +217,14 @@ export class WebFetchTool implements IMetonaTool {
         let redirectBlocked: string | null = null;
 
         for (let hop = 0; hop <= MAX_REDIRECT_HOPS; hop++) {
-          response = await ssrfPinnedFetch(currentUrl, { headers, redirect: 'manual' }, 20_000);
+          // v0.8.0 P1-2: 每跳透传引擎级 abort signal —— 用户中断时底层 fetch
+          // 立即取消（含重定向链中间跳）
+          response = await ssrfPinnedFetch(
+            currentUrl,
+            { headers, redirect: 'manual' },
+            20_000,
+            signal,
+          );
           const next = resolveRedirectTarget(response, currentUrl);
           if (next === null) break; // 非重定向（或无/非法 Location）—— 当前响应即终态
           if (hop === MAX_REDIRECT_HOPS) {
@@ -261,6 +279,7 @@ export class WebFetchTool implements IMetonaTool {
           if (response.status >= 500 && attempt < maxRetries - 1) {
             await this.sleep(
               backoffBase * Math.pow(2, attempt) + Math.random() * backoffBase * 0.6,
+              signal,
             );
             continue;
           }
@@ -293,9 +312,22 @@ export class WebFetchTool implements IMetonaTool {
         return { success: true, html, text, intercepted: false, reason: '' };
       } catch (err) {
         const errorMsg = (err as Error).message;
+        // v0.8.0 P1-2: abort 语义 —— 不重试、不睡眠，直接终止本阶段
+        if (signal?.aborted || (err as Error & { name?: string }).name === 'AbortError') {
+          return {
+            success: false,
+            html: '',
+            text: '',
+            intercepted: false,
+            reason: 'Fetch aborted',
+          };
+        }
         if (attempt < maxRetries - 1) {
           logTool('web_fetch', `Attempt ${attempt + 1} failed: ${errorMsg}, retrying...`);
-          await this.sleep(backoffBase * Math.pow(2, attempt) + Math.random() * backoffBase * 0.6);
+          await this.sleep(
+            backoffBase * Math.pow(2, attempt) + Math.random() * backoffBase * 0.6,
+            signal,
+          );
           continue;
         }
         return { success: false, html: '', text: '', intercepted: false, reason: errorMsg };
@@ -313,7 +345,7 @@ export class WebFetchTool implements IMetonaTool {
 
   // ===== Phase 2/3: 浏览器回退（使用共享 BrowserWindowManager 单例） =====
 
-  private async browserFetch(url: string): Promise<string | null> {
+  private async browserFetch(url: string, signal?: AbortSignal): Promise<string | null> {
     // 查缓存（浏览器阶段产出的是纯文本，与 text 模式同键）
     const cached = fetchCache.get(`text:${url}`);
     if (cached) {
@@ -322,10 +354,13 @@ export class WebFetchTool implements IMetonaTool {
     }
 
     try {
+      // v0.8.0 P1-2: 引擎级 abort 透传 —— 中断时 BrowserWindowManager 停止页面
+      // 加载并终止抓取序列（此前浏览器回退完全不受 abort 控制）
+      if (signal?.aborted) return null;
       // 崩溃修复: 走 manager.fetchPageText（内部串行化完整的 open→等待→evaluate 序列）。
       // 原实现直接 open/evaluate 共享单例 —— web_search 并行抓取触发多个回退同时进入时，
       // 后到者销毁前者的窗口（ERR_ABORTED ×3 = 应用崩溃 ×3，见 manager 注释）。
-      const text = await getBrowserManager().fetchPageText(url);
+      const text = await getBrowserManager().fetchPageText(url, signal);
 
       if (text && text.trim().length >= 80) {
         // 拦截检测（浏览器渲染后仍可能是验证码挑战页）
@@ -383,7 +418,23 @@ export class WebFetchTool implements IMetonaTool {
     };
   }
 
-  private sleep(ms: number): Promise<void> {
+  /** v0.8.0 P1-2: abort 感知的 sleep —— 中断期间不再等待退避间隔 */
-    return new Promise((resolve) => setTimeout(resolve, ms));
+  private sleep(ms: number, signal?: AbortSignal): Promise<void> {
+    return new Promise((resolve) => {
+      if (signal?.aborted) return resolve();
+      const cleanup = (): void => {
+        clearTimeout(timer);
+        signal?.removeEventListener('abort', onAbort);
+      };
+      const onAbort = (): void => {
+        cleanup();
+        resolve();
+      };
+      const timer = setTimeout(() => {
+        cleanup();
+        resolve();
+      }, ms);
+      signal?.addEventListener('abort', onAbort, { once: true });
+    });
   }
 }

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

@@ -338,9 +338,15 @@ function parse360Regex(html: string): SearchResult[] {
 // 探测经 ssrfPinnedFetch（DNS pinning），重定向不自动跟随（3xx 即视为可达 ——
 // 链接活性已证明，且跟跳目标不再绕过校验）。
 
-async function checkReachability(urls: string[], concurrency = 5): Promise<Map<string, boolean>> {
+async function checkReachability(
+  urls: string[],
+  signal?: AbortSignal,
+  concurrency = 5,
+): Promise<Map<string, boolean>> {
   const result = new Map<string, boolean>();
   for (let i = 0; i < urls.length; i += concurrency) {
+    // v0.8.0 P1-2: abort 后立即终止预检批次
+    if (signal?.aborted) break;
     const batch = urls.slice(i, i + concurrency);
     const checks = batch.map(async (url) => {
       try {
@@ -349,7 +355,13 @@ async function checkReachability(urls: string[], concurrency = 5): Promise<Map<s
           result.set(url, false);
           return;
         }
-        const resp = await ssrfPinnedFetch(url, { method: 'HEAD', redirect: 'manual' }, 3_000);
+        // v0.8.0 P1-2: 透传引擎级 abort signal
+        const resp = await ssrfPinnedFetch(
+          url,
+          { method: 'HEAD', redirect: 'manual' },
+          3_000,
+          signal,
+        );
         result.set(url, resp.ok || (resp.status >= 300 && resp.status < 400));
       } catch {
         result.set(url, false);
@@ -424,9 +436,14 @@ export class WebSearchTool implements IMetonaTool {
     private webFetchTool: WebFetchTool,
   ) {}
 
-  async execute(args: Record<string, unknown>, _context: ToolExecutionContext): Promise<unknown> {
+  async execute(args: Record<string, unknown>, context: ToolExecutionContext): Promise<unknown> {
     const query = args.query as string;
 
+    // v0.8.0 P1-2: abort 立即生效（后续各阶段均携带本 signal）
+    if (context.signal?.aborted) {
+      return { success: false, query, results: [], error: 'Search aborted' };
+    }
+
     // 读取 SearXNG 配置
     const searxngConfig = this.readSearXNGConfig();
     const useSearXNG = searxngConfig.enabled && !!searxngConfig.url;
@@ -463,12 +480,23 @@ export class WebSearchTool implements IMetonaTool {
     let engineStats: Record<string, string>;
 
     if (useSearXNG) {
-      const searxResult = await this.searchSearXNG(query, searxngConfig, maxResults, timeRange);
+      const searxResult = await this.searchSearXNG(
+        query,
+        searxngConfig,
+        maxResults,
+        timeRange,
+        context.signal,
+      );
       results = searxResult.results;
       mode = 'searxng';
       engineStats = searxResult.engineStats;
     } else {
-      const builtinResult = await this.searchBuiltinEngines(query, maxResults, timeRange);
+      const builtinResult = await this.searchBuiltinEngines(
+        query,
+        maxResults,
+        timeRange,
+        context.signal,
+      );
       results = builtinResult.results;
       mode = 'builtin';
       engineStats = builtinResult.engineStats;
@@ -479,7 +507,7 @@ export class WebSearchTool implements IMetonaTool {
 
     // 可达性预检
     const topUrls = deduped.slice(0, Math.min(20, deduped.length)).map((r) => r.url);
-    const reachabilityMap = await checkReachability(topUrls);
+    const reachabilityMap = await checkReachability(topUrls, context.signal);
     for (const r of deduped) {
       r.reachable = reachabilityMap.get(r.url) ?? false;
     }
@@ -489,11 +517,17 @@ export class WebSearchTool implements IMetonaTool {
 
     // 摘要增强
     if (enhanceSnippets) {
-      await this.enhanceSnippets(sorted, 3);
+      await this.enhanceSnippets(sorted, 3, context);
     }
 
     // 自动抓取完整内容
-    const fetchedContent = await this.autoFetch(query, sorted, searxngConfig.fetch_mode, fetchTop);
+    const fetchedContent = await this.autoFetch(
+      query,
+      sorted,
+      searxngConfig.fetch_mode,
+      fetchTop,
+      context,
+    );
 
     // 格式化输出
     const formatted = this.formatResults(query, sorted);
@@ -536,6 +570,7 @@ export class WebSearchTool implements IMetonaTool {
     config: SearXNGConfig,
     maxResults: number,
     timeRange: string,
+    signal?: AbortSignal,
   ): Promise<{ results: SearchResult[]; engineStats: Record<string, string> }> {
     const results: SearchResult[] = [];
     const engineStats: Record<string, string> = {};
@@ -549,6 +584,8 @@ export class WebSearchTool implements IMetonaTool {
     let page = 1;
 
     while (results.length < maxResults && page <= maxPages) {
+      // v0.8.0 P1-2: abort 后停止翻页
+      if (signal?.aborted) break;
       const params = new URLSearchParams();
       params.set('q', query);
       params.set('format', config.format || 'json');
@@ -564,7 +601,8 @@ export class WebSearchTool implements IMetonaTool {
       const pageResults: SearchResult[] = [];
 
       try {
-        const response = await fetchWithTimeout(searchUrl, { headers }, 15_000);
+        // v0.8.0 P1-2: SearXNG 请求携带引擎级 abort signal
+        const response = await fetchWithTimeout(searchUrl, { headers }, 15_000, signal);
         if (!response.ok) {
           throw new Error(`SearXNG API error: ${response.status} ${response.statusText}`);
         }
@@ -625,6 +663,7 @@ export class WebSearchTool implements IMetonaTool {
     query: string,
     maxResults: number,
     timeRange: string,
+    signal?: AbortSignal,
   ): Promise<{ results: SearchResult[]; engineStats: Record<string, string> }> {
     const searchPromises = ENGINES.map(async (engine) => {
       try {
@@ -639,6 +678,7 @@ export class WebSearchTool implements IMetonaTool {
             },
           },
           8_000,
+          signal,
         );
 
         if (!response.ok) {
@@ -689,16 +729,23 @@ export class WebSearchTool implements IMetonaTool {
 
   // ===== 摘要增强（委托给 WebFetchTool） =====
 
-  private async enhanceSnippets(results: SearchResult[], maxEnhance: number): Promise<void> {
+  private async enhanceSnippets(
+    results: SearchResult[],
+    maxEnhance: number,
+    context: ToolExecutionContext,
+  ): Promise<void> {
     let enhanced = 0;
     for (const r of results) {
+      // v0.8.0 P1-2: abort 后停止增强
+      if (context.signal?.aborted) break;
       if (enhanced >= maxEnhance) break;
       if (r.snippet.length < 30 && r.reachable) {
         try {
-          const fetchResult = (await this.webFetchTool.execute(
+          // v0.8.0 P1-2: 透传真实执行上下文（signal）—— 移除"伪造空上下文"
-            { url: r.url },
+          const fetchResult = (await this.webFetchTool.execute({ url: r.url }, context)) as {
-            { sessionId: '', workspacePath: '', iteration: 0, requestId: '' },
+            success: boolean;
-          )) as { success: boolean; content?: string };
+            content?: string;
+          };
 
           if (fetchResult.success && fetchResult.content) {
             const text = fetchResult.content.slice(0, 200);
@@ -729,13 +776,21 @@ export class WebSearchTool implements IMetonaTool {
     results: SearchResult[],
     fetchMode: string,
     fetchTop: number,
+    context: ToolExecutionContext,
   ): Promise<Array<{ url: string; title: string; content: string }>> {
+    // v0.8.0 P1-2 根治: 时间预算收敛 —— 旧实现最坏耗时（8 条 × 3 并发 × 单次
+    // web_fetch 240s ≈ 720s）远超工具自身 300s 超时，registry 层超时后整次调用
+    // 作废（已抓取内容全部丢弃）。现以 deadline 为界：剩余预算不足一次最小
+    // 抓取（30s）即停，已抓取内容照常返回。
+    const BUDGET_RATIO = 0.8;
+    const MIN_FETCH_BUDGET_MS = 30_000;
+    const deadlineMs = Date.now() + 300_000 * BUDGET_RATIO;
+
     // 相关性评分（不过滤，relevance=0 的结果也参与抓取候选）
-    const withRelevance = results.map((r) => ({
+    const filtered = results.map((r) => ({
       result: r,
       relevance: computeRelevance(query, r),
     }));
-    const filtered = withRelevance.length > 0 ? withRelevance : [];
 
     // 确定抓取数量：fetchTop 已在 execute() 中综合了配置面板和工具参数
     const topN = Math.min(fetchTop, 8, filtered.length);
@@ -761,9 +816,10 @@ export class WebSearchTool implements IMetonaTool {
     }): Promise<{ url: string; title: string; content: string } | null> => {
       try {
         // 委托给 WebFetchTool — 享受三阶段回退策略（HTTP + 反爬 + 浏览器渲染）
+        // v0.8.0 P1-2: 透传真实执行上下文（signal）—— 移除"伪造空上下文"
         const fetchResult = (await this.webFetchTool.execute(
           { url: item.result.url },
-          { sessionId: '', workspacePath: '', iteration: 0, requestId: '' },
+          context,
         )) as { success: boolean; content?: string };
 
         if (fetchResult.success && fetchResult.content) {
@@ -779,9 +835,18 @@ export class WebSearchTool implements IMetonaTool {
       }
     };
 
-    // 并行批次抓取（并发 3）
+    // 并行批次抓取（并发 3，时间预算收敛）
     const CONCURRENCY = 3;
     for (let i = 0; i < toFetch.length; i += CONCURRENCY) {
+      // v0.8.0 P1-2: 剩余预算不足一次最小抓取 → 停止，保留已抓取内容
+      const remaining = deadlineMs - Date.now();
+      if (context.signal?.aborted || remaining < MIN_FETCH_BUDGET_MS) {
+        logTool(
+          'web_search',
+          `Auto-fetch budget stop: fetched=${fetched.length}, remaining=${Math.max(0, remaining)}ms, aborted=${!!context.signal?.aborted}`,
+        );
+        break;
+      }
       const batch = toFetch.slice(i, i + CONCURRENCY);
       const settled = await Promise.allSettled(batch.map((item) => fetchOne(item)));
       for (const r of settled) {

electron/harness/types/metona-response.ts

@@ -144,6 +144,18 @@ export interface MetonaStreamEvent {
 
   /** DONE — 终止原因（前端可据此区分正常完成/错误/中断） */
   terminationReason?: string;
+
+  /**
+   * DONE — Provider 原生停止原因（v0.8.0 P0-1 finish_reason 全链路贯通）。
+   *
+   * 取值域为归一化后的 OpenAI 语义：'stop' | 'length' | 'tool_calls' |
+   * 'content_filter'（Anthropic max_tokens→length、refusal→content_filter；
+   * Ollama done_reason 同映射；MiMo repetition_truncation→stop）。
+   * adapter 在流结束（真实 [DONE]/message_stop/done:true 或断流合成）时携带；
+   * 引擎转发到最终 DONE 事件，前端据此展示截断/过滤提示；TRACE 层记录真值
+   * （v0.7.4 及之前硬编码 'stop'，length 截断在录制文件中不可归因）。
+   */
+  finishReason?: string;
 }
 
 /** v0.4.1: 输出验证事件载荷 — OutputValidator 检出的疑似问题（幻觉/事实矛盾/敏感信息/格式） */

electron/ipc/__tests__/agent.test.ts

@@ -1054,3 +1054,73 @@ describe('llm:ollamaPull / ollamaPullCancel — 模型下载', () => {
     expect(result.success).toBe(false);
   });
 });
+
+// ===== v0.8.0 P1-1a: 后台会话回放缓冲 =====
+
+describe('agent:getReplayState — v0.8.0 P1-1a 后台会话回放缓冲', () => {
+  it('streamEvent + stateChange 按序入缓冲，runId 记录，INIT 清空上一 run', async () => {
+    const { ctx } = makeCtx();
+    registerAgentHandlers(ctx);
+    const em = ctx.agentEngineManager as unknown as EventEmitter;
+
+    em.emit('streamEvent', {
+      type: 'text_delta',
+      sessionId: 'sess_1',
+      seq: 0,
+      timestamp: Date.now(),
+      delta: 'a',
+    });
+    em.emit('stateChange', {
+      sessionId: 'sess_1',
+      state: 'THINKING',
+      iteration: 1,
+      runId: 'run_x',
+    });
+    em.emit('streamEvent', {
+      type: 'text_delta',
+      sessionId: 'sess_1',
+      seq: 1,
+      timestamp: Date.now(),
+      delta: 'b',
+      runId: 'run_x',
+    });
+
+    const r = (await getHandler('agent:getReplayState')(null, 'sess_1')) as {
+      success: boolean;
+      data: {
+        isRunning: boolean;
+        runId: string | null;
+        truncated: boolean;
+        events: Array<{ channel: string }>;
+      };
+    };
+    expect(r.success).toBe(true);
+    expect(r.data.events.length).toBe(3);
+    expect(r.data.runId).toBe('run_x');
+    expect(r.data.events.map((e) => e.channel)).toEqual([
+      'streamEvent',
+      'stateChange',
+      'streamEvent',
+    ]);
+
+    // 新 run INIT → 上一 run 缓冲作废
+    em.emit('stateChange', {
+      sessionId: 'sess_1',
+      state: 'INIT',
+      iteration: 0,
+      runId: 'run_y',
+    });
+    const r2 = (await getHandler('agent:getReplayState')(null, 'sess_1')) as {
+      success: boolean;
+      data: { events: unknown[] };
+    };
+    expect(r2.data.events.length).toBe(0);
+  });
+
+  it('无效 sessionId → 明确失败', async () => {
+    const { ctx } = makeCtx();
+    registerAgentHandlers(ctx);
+    const r = (await getHandler('agent:getReplayState')(null, '')) as { success: boolean };
+    expect(r.success).toBe(false);
+  });
+});

electron/ipc/agent.ts

@@ -59,8 +59,43 @@ interface IterationTrace {
   text: string;
   usage?: { input: number; output: number; total: number };
   responded: boolean; // 本轮 llm_response 是否已记录（PARSING 与下一轮 THINKING 去重）
+  /**
+   * v0.8.0 P0-1: 本轮 Provider 原生停止原因（DONE 事件携带的 finishReason）。
+   * v0.7.4 及之前 recordLLMResponse 硬编码 'stop'，length 截断在 TRACE 文件中
+   * 不可归因；现记录真值，缺省回退 'stop'。
+   */
+  finishReason?: string;
 }
 
+/**
+ * v0.8.0 P1-1a: 单会话的流式回放缓冲 —— 渲染层切走会话期间，事件管道仍照常
+ * 投递（按会话隔离被渲染层准入拒绝），此缓冲按序保存 streamEvent + stateChange
+ * 双通道事件；用户切回会话时经 agent:getReplayState 拉取并灌入渲染层事件总线，
+ * 实现"后台会话运行内容不丢失"。
+ *
+ * 有界设计：单会话上限 MAX_REPLAY_EVENTS 条 / MAX_REPLAY_BYTES 字节，溢出丢弃
+ * 最旧并置 truncated 标记；TERMINATED 后保留（供"完成后切回"看到最终内容），
+ * 下一次 run 启动（INIT stateChange）时清空重建。
+ */
+interface ReplayEntry {
+  channel: 'streamEvent' | 'stateChange';
+  payload: unknown;
+  ts: number;
+}
+
+interface ReplayBuffer {
+  events: ReplayEntry[];
+  bytes: number;
+  truncated: boolean;
+  /** 最近一次观察到的 runId（供渲染层回放后对齐 run 守卫） */
+  runId?: string;
+  terminated: boolean;
+}
+
+const MAX_REPLAY_EVENTS = 2000;
+const MAX_REPLAY_BYTES = 4 * 1024 * 1024;
+const MAX_REPLAY_SESSIONS = 50;
+
 export function registerAgentHandlers(ctx: IPCContext): void {
   const {
     agentEngineManager,
@@ -83,6 +118,54 @@ export function registerAgentHandlers(ctx: IPCContext): void {
   // ===== 常驻事件管道：text_delta 按会话节流（F8） =====
   const throttleStates = new Map<string, ThrottleState>();
   const iterationTraces = new Map<string, IterationTrace>();
+  // v0.8.0 P1-1a: 每会话流式回放缓冲（后台会话内容恢复）
+  const replayBuffers = new Map<string, ReplayBuffer>();
+
+  /** 追加一条事件到会话回放缓冲（有界：条数/字节双上限，溢出丢最旧） */
+  const appendReplay = (sessionId: string, entry: ReplayEntry): void => {
+    let buf = replayBuffers.get(sessionId);
+    if (!buf) {
+      // 会话数上限保护：超出后淘汰最早的缓冲（Map 迭代序 = 插入序）
+      if (replayBuffers.size >= MAX_REPLAY_SESSIONS) {
+        const oldest = replayBuffers.keys().next().value as string | undefined;
+        if (oldest !== undefined) replayBuffers.delete(oldest);
+      }
+      buf = { events: [], bytes: 0, truncated: false, terminated: false };
+      replayBuffers.set(sessionId, buf);
+    }
+    // run 启动（INIT）后旧 run 缓冲作废 —— 由 stateChange 监听器在 INIT 时清空，
+    // 此处仅在 terminated 缓冲上遇到新内容时兜底重置（正常路径 INIT 先行）
+    if (buf.terminated) {
+      replayBuffers.delete(sessionId);
+      buf = { events: [], bytes: 0, truncated: false, terminated: false };
+      replayBuffers.set(sessionId, buf);
+    }
+    let size = 0;
+    try {
+      size = JSON.stringify(entry.payload).length;
+    } catch {
+      size = 256; // 序列化失败按保守值计入
+    }
+    buf.events.push(entry);
+    buf.bytes += size;
+    while (
+      buf.events.length > MAX_REPLAY_EVENTS ||
+      (buf.bytes > MAX_REPLAY_BYTES && buf.events.length > 1)
+    ) {
+      const dropped = buf.events.shift();
+      buf.truncated = true;
+      if (dropped) {
+        try {
+          buf.bytes -= JSON.stringify(dropped.payload).length;
+        } catch {
+          buf.bytes -= 256;
+        }
+      }
+    }
+    // 记录 runId（首个携带者）
+    const payload = entry.payload as { runId?: string } | null;
+    if (!buf.runId && payload?.runId) buf.runId = payload.runId;
+  };
 
   // v0.7.3 P1-5: 会话级记忆固化时间戳（consolidation-policy 频率门控的状态持有方）
   // v0.7.4 P3-5: LRU 化 —— 旧实现每会话一条永不清除，长期运行后无界增长。
@@ -136,6 +219,9 @@ export function registerAgentHandlers(ctx: IPCContext): void {
   agentEngineManager.on('streamEvent', (event: MetonaStreamEvent) => {
     if (!event.sessionId) return;
     const sessionId = event.sessionId;
+    // v0.8.0 P1-1a: 全量事件进入回放缓冲（含 text_delta —— 必须在节流分支
+    // return 之前入队，否则切回会话时已缓冲的正文增量缺失）
+    appendReplay(sessionId, { channel: 'streamEvent', payload: event, ts: Date.now() });
     const trace = iterationTraces.get(sessionId);
 
     // F8: text_delta 聚合，其他事件立即转发（先 flush 保证顺序）
@@ -224,6 +310,8 @@ export function registerAgentHandlers(ctx: IPCContext): void {
         // 旧实现在 DONE 时删除 iterationTraces → 最终迭代的 TRACE 完整性缺失。
         // 现仅在 TERMINATED 分支统一收尾（flush throttle buffer + 删 iterationTraces）。
         // 注意：此处仍需转发 DONE 事件到前端（下方 broadcast 统一执行）。
+        // v0.8.0 P0-1: 捕获 Provider 原生停止原因（recordLLMResponse 记录真值）
+        if (trace && event.finishReason) trace.finishReason = event.finishReason;
         break;
       default:
         break;
@@ -247,6 +335,20 @@ export function registerAgentHandlers(ctx: IPCContext): void {
       broadcast('agent:stateChange', data);
 
       const sessionId = data.sessionId;
+      // v0.8.0 P1-1a: stateChange 事件进入回放缓冲。INIT（run 启动）清空上一 run
+      // 的缓冲；TERMINATED 置终态标记（保留缓冲供"完成后切回"回放最终内容）。
+      if (sessionId) {
+        const stateRaw = data.state ?? data.current ?? '';
+        if (stateRaw === 'INIT') {
+          replayBuffers.delete(sessionId);
+        } else {
+          appendReplay(sessionId, { channel: 'stateChange', payload: data, ts: Date.now() });
+          if (stateRaw === 'TERMINATED') {
+            const buf = replayBuffers.get(sessionId);
+            if (buf) buf.terminated = true;
+          }
+        }
+      }
       if (!sessionId || data.iteration == null) return;
       const stateValue = data.state ?? data.current ?? '';
       const trace = iterationTraces.get(sessionId);
@@ -258,7 +360,8 @@ export function registerAgentHandlers(ctx: IPCContext): void {
             sessionId,
             iteration: trace.iteration,
             content: trace.text,
-            finishReason: 'stop',
+            // v0.8.0 P0-1: 记录真实停止原因（旧实现硬编码 'stop'，length 截断不可归因）
+            finishReason: trace.finishReason ?? 'stop',
             tokenUsage: trace.usage ?? { input: 0, output: 0, total: 0 },
           });
         }
@@ -298,7 +401,8 @@ export function registerAgentHandlers(ctx: IPCContext): void {
           sessionId,
           iteration: trace.iteration,
           content: trace.text,
-          finishReason: 'stop',
+          // v0.8.0 P0-1: 记录真实停止原因（旧实现硬编码 'stop'，length 截断不可归因）
+          finishReason: trace.finishReason ?? 'stop',
           tokenUsage: trace.usage ?? { input: 0, output: 0, total: 0 },
         });
       }
@@ -991,6 +1095,27 @@ export function registerAgentHandlers(ctx: IPCContext): void {
     return { success: true };
   });
 
+  // ===== v0.8.0 P1-1a: 后台会话流回放（切回会话时恢复运行内容） =====
+  // 渲染层 setCurrentSession 检测到目标会话在 sessionRunStates 中运行（或刚结束）
+  // 时调用本通道：返回回放缓冲中按序保存的 streamEvent + stateChange 事件，
+  // 渲染层经事件总线灌入 useAgentStream 管线重建消息/Trace 状态，实时事件随后
+  // 无缝衔接（runId 对齐由缓冲记录的 runId 提供）。
+  ipcMain.handle('agent:getReplayState', (_event, sessionId: unknown) => {
+    if (typeof sessionId !== 'string' || !sessionId) {
+      return { success: false, error: 'Invalid sessionId' };
+    }
+    const buf = replayBuffers.get(sessionId);
+    return {
+      success: true,
+      data: {
+        isRunning: agentEngineManager.isRunning(sessionId),
+        runId: buf?.runId ?? null,
+        truncated: buf?.truncated ?? false,
+        events: buf?.events ?? [],
+      },
+    };
+  });
+
   // ===== v0.5.0: SubAgent 可观测性 =====
   // 1) 生命周期事件广播给前端（AgentMonitor 的 SubAgent 状态区）
   // 2) SubEngine 流事件录制到独立 TRACE 文件（sessionId = taskId），不污染父会话的流
@@ -1005,6 +1130,8 @@ export function registerAgentHandlers(ctx: IPCContext): void {
     text: string;
     usage: { input: number; output: number; total: number };
     responded: boolean;
+    /** v0.8.0 P0-1: 本轮 Provider 原生停止原因（DONE 事件携带） */
+    finishReason?: string;
   }
   const subTraces = new Map<string, SubTraceState>();
 
@@ -1117,7 +1244,8 @@ export function registerAgentHandlers(ctx: IPCContext): void {
             sessionId: taskId,
             iteration: st.iteration,
             content: st.text,
-            finishReason: 'stop',
+            // v0.8.0 P0-1: 记录真实停止原因（与主管道同口径）
+            finishReason: st.finishReason ?? 'stop',
             tokenUsage: st.usage,
           });
           sessionRecorder.recordIterationEnd(taskId, {
@@ -1152,7 +1280,8 @@ export function registerAgentHandlers(ctx: IPCContext): void {
             sessionId: taskId,
             iteration: st.iteration,
             content: st.text,
-            finishReason: 'stop',
+            // v0.8.0 P0-1: 记录真实停止原因（与主管道同口径）
+            finishReason: st.finishReason ?? 'stop',
             tokenUsage: st.usage,
           });
         }
@@ -1184,6 +1313,10 @@ export function registerAgentHandlers(ctx: IPCContext): void {
             };
           }
           break;
+        case MetonaStreamEventType.DONE:
+          // v0.8.0 P0-1: 捕获 Provider 原生停止原因（SubAgent TRACE 真值）
+          if (event.finishReason) st.finishReason = event.finishReason;
+          break;
         case MetonaStreamEventType.TOOL_CALL_COMPLETE:
           if (event.toolCall) {
             sessionRecorder.recordToolCall({

electron/ipc/app.ts

@@ -35,6 +35,18 @@ export function registerAppHandlers(ctx: IPCContext): void {
     return result;
   });
 
+  // ===== v0.8.0 P2-3: 下载并安装更新（electron-updater；未启用时明确失败） =====
+  ipcMain.handle('app:updateInstall', async () => {
+    const { getAutoUpdaterHandle } = await import('../services/update.service');
+    const handle = getAutoUpdaterHandle();
+    if (!handle) {
+      return { success: false, error: '自动更新未启用（未配置更新源或开发模式）' };
+    }
+    // fire-and-forget：进度经 update:status 广播，完成后 quitAndInstall
+    void handle.downloadAndInstall();
+    return { success: true };
+  });
+
   // ===== v0.7.3 P3-4: 健康快照（SLO 指标 + 最近健康检查报告）=====
   ipcMain.handle('app:healthSnapshot', async () => {
     try {

electron/ipc/config.ts

@@ -42,8 +42,9 @@ export function registerConfigHandlers(ctx: IPCContext): void {
     }
 
     // v0.7.4 P2-9-C: URL 类配置键高危目标校验（llm.baseURL/searxng.url/updateFeedUrl）
+    // v0.8.0 P1-5: 升级为 async 深校验（域名 DNS 解析拦云元数据绕过）
     try {
-      assertSafeConfigUrls([{ key, value }]);
+      await assertSafeConfigUrls([{ key, value }]);
     } catch (err) {
       log.warn(`[CONFIG] config:set rejected URL for ${key}: ${(err as Error).message}`);
       return { success: false, error: (err as Error).message };
@@ -104,8 +105,9 @@ export function registerConfigHandlers(ctx: IPCContext): void {
     }
 
     // v0.7.4 P2-9-C: 批量写入同样校验 URL 类配置键
+    // v0.8.0 P1-5: 升级为 async 深校验
     try {
-      assertSafeConfigUrls(entries as Array<{ key: string; value: unknown }>);
+      await assertSafeConfigUrls(entries as Array<{ key: string; value: unknown }>);
     } catch (err) {
       log.warn(`[CONFIG] config:setBatch rejected URL entry: ${(err as Error).message}`);
       return { success: false, error: (err as Error).message };

electron/ipc/mcp.ts

@@ -144,4 +144,12 @@ export function registerMCPHandlers(ctx: IPCContext): void {
       return { success: false, error: error instanceof Error ? error.message : String(error) };
     }
   });
+
+  // ===== v0.8.0 P2-5: MCP Resources / Prompts 发现 =====
+  ipcMain.handle('mcp:listServerContents', async (_event, name: unknown) => {
+    if (typeof name !== 'string' || !name.trim()) {
+      return { success: false, error: 'Invalid server name' };
+    }
+    return { success: true, data: mcpManager.getServerContents(name) };
+  });
 }

electron/ipc/sessions.ts

@@ -6,12 +6,19 @@
  */
 
 import { ipcMain } from 'electron';
+import { join, resolve as resolvePath, sep } from 'path';
+import { existsSync, readdirSync, readFileSync, statSync } from 'fs';
 import type { IPCContext } from './context';
 
 /** M-34 修复: 统一 sessionId 校验辅助函数 */
 const isValidSessionId = (id: unknown): id is string =>
   typeof id === 'string' && id.length > 0 && id.length <= 200;
 
+/** v0.8.0 P2-2: 会话录制文件名白名单（防路径逃逸/任意文件读取） */
+const RECORDING_NAME_RE = /^session_[A-Za-z0-9_-]+\.jsonl$/;
+/** v0.8.0 P2-2: 单个录制文件读取上限（防超大文件撑爆 IPC） */
+const MAX_RECORDING_BYTES = 20 * 1024 * 1024;
+
 export function registerSessionHandlers(ctx: IPCContext): void {
   const { sessionService, confirmationHook, agentEngineManager } = ctx;
 
@@ -40,6 +47,8 @@ export function registerSessionHandlers(ctx: IPCContext): void {
       agentEngineManager.abort(sessionId);
       await agentEngineManager.waitForAbort(sessionId);
     }
+    // v0.8.0 P2-1: 软删除 —— 会话进入回收站（deleted_at），30 天后自动清理，
+    // 可经 sessions:restore 恢复 / sessions:purge 彻底删除
     const result = { success: sessionService.delete(sessionId) };
     // v0.7.3 P2-3: 会话删除 = 会话终态 —— 决策记忆/pending 确认一并清理
     // （防 rememberedDecisions 随会话数累积泄漏）
@@ -52,6 +61,27 @@ export function registerSessionHandlers(ctx: IPCContext): void {
     return result;
   });
 
+  // ===== v0.8.0 P2-1: 回收站 =====
+  ipcMain.handle('sessions:listTrash', async () => {
+    return sessionService.listDeleted();
+  });
+
+  ipcMain.handle('sessions:restore', async (_event, sessionId: unknown) => {
+    if (!isValidSessionId(sessionId)) return { success: false, error: 'Invalid sessionId' };
+    return { success: sessionService.restore(sessionId) };
+  });
+
+  ipcMain.handle('sessions:purge', async (_event, sessionId: unknown) => {
+    if (!isValidSessionId(sessionId)) return { success: false, error: 'Invalid sessionId' };
+    // 彻底删除 = 终态：决策记忆/引擎与软删除同口径清理
+    const result = { success: sessionService.purge(sessionId) };
+    if (result.success) {
+      confirmationHook.forgetSession(sessionId);
+      agentEngineManager.disposeEngine(sessionId);
+    }
+    return result;
+  });
+
   ipcMain.handle('sessions:getMessages', async (_event, sessionId: unknown) => {
     // M-34 修复: 校验 sessionId
     if (!isValidSessionId(sessionId)) return [];
@@ -161,4 +191,64 @@ export function registerSessionHandlers(ctx: IPCContext): void {
     if (!isValidSessionId(sessionId)) return null;
     return sessionService.getTraceData(sessionId);
   });
+
+  // ===== v0.8.0 P2-2: 会话回放（JSONL 录制读取） =====
+  ipcMain.handle('sessions:listRecordings', async (_event, sessionId: unknown) => {
+    if (!isValidSessionId(sessionId)) return { success: false, error: 'Invalid sessionId' };
+    try {
+      const logsDir = join(ctx.workspaceService.getPath(), 'logs');
+      if (!existsSync(logsDir)) return { success: true, data: [] };
+      const prefix = `session_${sessionId}_`;
+      const files = readdirSync(logsDir)
+        .filter((n) => n.startsWith(prefix) && RECORDING_NAME_RE.test(n))
+        .map((name) => {
+          try {
+            const st = statSync(join(logsDir, name));
+            return { name, size: st.size, mtime: st.mtimeMs };
+          } catch {
+            return null;
+          }
+        })
+        .filter((f): f is { name: string; size: number; mtime: number } => f !== null)
+        .sort((a, b) => b.mtime - a.mtime);
+      return { success: true, data: files };
+    } catch (error) {
+      return { success: false, error: (error as Error).message };
+    }
+  });
+
+  ipcMain.handle('sessions:readRecording', async (_event, name: unknown) => {
+    if (typeof name !== 'string' || !RECORDING_NAME_RE.test(name)) {
+      return { success: false, error: 'Invalid recording file name' };
+    }
+    try {
+      const logsDir = resolvePath(ctx.workspaceService.getPath(), 'logs');
+      const filePath = resolvePath(logsDir, name);
+      // 目录边界校验（双保险：文件名白名单已杜绝子目录，此处防 symlink/拼接逃逸）
+      if (!filePath.startsWith(logsDir + sep)) {
+        return { success: false, error: 'Recording path escapes logs directory' };
+      }
+      if (!existsSync(filePath)) return { success: false, error: 'Recording file not found' };
+      const size = statSync(filePath).size;
+      if (size > MAX_RECORDING_BYTES) {
+        return { success: false, error: `Recording file too large (${size} bytes)` };
+      }
+      const raw = readFileSync(filePath, 'utf-8');
+      // 逐行解析，坏行跳过并计数（录制文件允许尾部截断）
+      const events: Array<Record<string, unknown>> = [];
+      let skipped = 0;
+      for (const line of raw.split('\n')) {
+        const trimmed = line.trim();
+        if (!trimmed) continue;
+        try {
+          events.push(JSON.parse(trimmed) as Record<string, unknown>);
+        } catch {
+          skipped++;
+        }
+      }
+      return { success: true, data: { name, events, skipped } };
+    } catch (error) {
+      return { success: false, error: (error as Error).message };
+    }
+  });
 }

electron/ipc/shared.ts

@@ -10,7 +10,11 @@ import log from 'electron-log';
 import type { IPCContext } from './context';
 import { broadcast } from './context';
 import { isSensitiveConfigKey } from '../utils/secure-config';
-import { assertSafeConfigTarget } from '../harness/tools/built-in/ssrf-guard';
+// v0.8.0 P1-5: 配置 URL 深校验（域名真实 DNS 解析，拦"解析到云元数据 IP"绕过）
+import {
+  assertSafeConfigTargetDeep,
+  DeepCheckSoftFailure,
+} from '../harness/tools/built-in/ssrf-guard';
 
 /**
  * v0.7.4 P2-9-C: URL 类配置键 —— 写入时须过 assertSafeConfigTarget 高危目标校验。
@@ -33,12 +37,25 @@ const URL_CONFIG_KEYS = new Set([
 /**
  * 校验一批配置写入中的 URL 类键值。任一非法即抛错（调用方整体拒绝）。
  * 非 URL 类键 / 空值 / 非字符串值跳过（空 baseURL 表示"未配置"，允许）。
+ *
+ * v0.8.0 P1-5: 升级为深校验 —— 静态规则（assertSafeConfigTarget）之外对域名
+ * 做真实 DNS 解析，任一解析结果命中链路本地/云元数据/组播保留段即拒绝；
+ * DNS 解析失败视为软失败放行（离线配置合法），仅 WARN 留痕。
  */
-export function assertSafeConfigUrls(entries: Array<{ key: string; value: unknown }>): void {
+export async function assertSafeConfigUrls(
+  entries: Array<{ key: string; value: unknown }>,
+): Promise<void> {
   for (const { key, value } of entries) {
     if (!URL_CONFIG_KEYS.has(key)) continue;
     if (typeof value !== 'string' || value.trim() === '') continue;
-    assertSafeConfigTarget(value);
+    await assertSafeConfigTargetDeep(value).catch((err) => {
+      // 软失败（DNS 解析失败）放行，仅日志留痕；硬失败（高危目标）向上抛
+      if (err instanceof DeepCheckSoftFailure) {
+        log.warn(`[CONFIG] URL deep check skipped for ${key}: ${(err as Error).message}`);
+        return;
+      }
+      throw err;
+    });
   }
 }
 

electron/ipc/workspace.ts

@@ -12,6 +12,34 @@ import log from 'electron-log';
 export function registerWorkspaceHandlers(ctx: IPCContext): void {
   const { workspaceService } = ctx;
 
+  // ===== v0.8.0 P2-4: @ 文件提及 =====
+
+  // 工作空间文件名索引（联想数据源；renderer 侧 Fuse 模糊过滤）
+  ipcMain.handle('workspace:listFiles', async (_event, limit: unknown) => {
+    const maxFiles =
+      typeof limit === 'number' && Number.isFinite(limit) && limit > 0
+        ? Math.min(5000, Math.floor(limit))
+        : 2000;
+    try {
+      return { success: true, data: workspaceService.listFiles(maxFiles) };
+    } catch (error) {
+      return { success: false, error: (error as Error).message };
+    }
+  });
+
+  // 读取提及文件的文本片段（路径边界 + 512KB 上限 + 二进制拒绝 + MEMORY.md 保护）
+  ipcMain.handle('workspace:readFileClip', async (_event, relPath: unknown, maxBytes: unknown) => {
+    if (typeof relPath !== 'string' || !relPath.trim()) {
+      return { success: false, error: 'Invalid path' };
+    }
+    const cap =
+      typeof maxBytes === 'number' && Number.isFinite(maxBytes) && maxBytes > 0
+        ? Math.min(1024 * 1024, Math.floor(maxBytes))
+        : 512 * 1024;
+    log.info(`[WORKSPACE] readFileClip: ${relPath.slice(0, 120)} (cap=${cap})`);
+    return workspaceService.readFileClip(relPath, cap);
+  });
+
   // 校验工作空间路径：检测路径有效性 + 必需文件状态 + 数据库是否存在
   ipcMain.handle('workspace:check', async (_event, targetPath: string) => {
     if (!targetPath || typeof targetPath !== 'string') {
@@ -67,11 +95,16 @@ export function registerWorkspaceHandlers(ctx: IPCContext): void {
   });
 
   // 从旧工作空间继承文件到新工作空间
-  ipcMain.handle('workspace:inheritFiles', async (_event, params: {
+  ipcMain.handle(
+    'workspace:inheritFiles',
+    async (
+      _event,
+      params: {
         targetPath: string;
         sourcePath: string;
         files: string[];
-  }) => {
+      },
+    ) => {
       const { targetPath, sourcePath, files } = params;
       if (!targetPath || !sourcePath || !Array.isArray(files)) {
         return { success: false, error: '参数无效' };
@@ -128,19 +161,28 @@ export function registerWorkspaceHandlers(ctx: IPCContext): void {
               try {
                 srcDb.backup(dstFile);
                 inherited.push(fileName);
-              log.info(`[WORKSPACE] Inherited ${fileName} (via SQLite backup): ${resolvedSource} → ${resolvedTarget}`);
+                log.info(
+                  `[WORKSPACE] Inherited ${fileName} (via SQLite backup): ${resolvedSource} → ${resolvedTarget}`,
+                );
               } finally {
                 srcDb.close();
               }
             } catch (err) {
               // backup 失败时回退到 copyFileSync（至少保证基本可用）
-            log.warn(`[WORKSPACE] SQLite backup failed, fallback to copyFileSync: ${(err as Error).message}`);
+              log.warn(
+                `[WORKSPACE] SQLite backup failed, fallback to copyFileSync: ${(err as Error).message}`,
+              );
               try {
                 copyFileSync(srcFile, dstFile);
                 inherited.push(fileName);
-              log.info(`[WORKSPACE] Inherited ${fileName} (fallback copyFileSync): ${resolvedSource} → ${resolvedTarget}`);
+                log.info(
+                  `[WORKSPACE] Inherited ${fileName} (fallback copyFileSync): ${resolvedSource} → ${resolvedTarget}`,
+                );
               } catch (err2) {
-              failed.push({ file: fileName, error: `backup 和 fallback 均失败: ${(err2 as Error).message}` });
+                failed.push({
+                  file: fileName,
+                  error: `backup 和 fallback 均失败: ${(err2 as Error).message}`,
+                });
               }
             }
             continue;
@@ -156,7 +198,8 @@ export function registerWorkspaceHandlers(ctx: IPCContext): void {
       }
 
       return { success: true, inherited, failed };
-  });
+    },
+  );
 
   // #51 修复: 校验源数据库完整性，防止继承损坏的数据库导致新工作空间数据丢失
   ipcMain.handle('workspace:checkDatabaseIntegrity', async (_event, sourcePath: string) => {
@@ -175,7 +218,9 @@ export function registerWorkspaceHandlers(ctx: IPCContext): void {
         const result = db.prepare('PRAGMA integrity_check').get() as { integrity_check: string };
         const ok = result.integrity_check === 'ok';
         if (!ok) {
-          log.warn(`[WORKSPACE] Source database integrity check failed: ${result.integrity_check} (source=${sourcePath})`);
+          log.warn(
+            `[WORKSPACE] Source database integrity check failed: ${result.integrity_check} (source=${sourcePath})`,
+          );
         }
         return { success: true, ok, detail: result.integrity_check };
       } finally {

electron/main.ts

@@ -321,6 +321,24 @@ async function initialize(): Promise<void> {
   // v0.7.3 P3-3: 启动期清理旧 JSONL 录制文件（按 mtime 保留最近 200 个）
   void sessionRecorder.pruneOldRecordings();
 
+  // v0.8.0 P2-1: 回收站 30 天自动清理（启动 + 每 24h；软删除会话超期硬删除）
+  const TRASH_RETENTION_DAYS = 30;
+  const purgeTrash = (): void => {
+    try {
+      const purged = sessionService.purgeExpiredTrash(TRASH_RETENTION_DAYS);
+      if (purged > 0) {
+        log.info(
+          `[Trash] Purged ${purged} session(s) older than ${TRASH_RETENTION_DAYS} days from trash`,
+        );
+      }
+    } catch (err) {
+      log.warn('[Trash] Purge failed:', err);
+    }
+  };
+  purgeTrash();
+  const trashTimer = setInterval(purgeTrash, 24 * 60 * 60 * 1000);
+  trashTimer.unref?.();
+
   // ===== v0.2.0: 安全模块（必须在工具注册之前） =====
   const policyEngine = new PolicyEngine();
   const sandboxManager = new SandboxManager({
@@ -759,6 +777,26 @@ async function initialize(): Promise<void> {
   trayManager = new TrayManager(resourcesPath);
   trayManager.initialize(mainWindow);
 
+  // ===== v0.8.0 P2-3: electron-updater 自动更新（仅生产环境 + 已配置 feed） =====
+  // dev 模式 / 未配置 app.updateFeedUrl 时静默禁用；状态事件广播 update:status
+  if (!process.env['ELECTRON_RENDERER_URL']) {
+    const feedUrl = configService.get<string>('app.updateFeedUrl') ?? '';
+    if (feedUrl) {
+      const { startAutoUpdater } = await import('./services/update.service');
+      await startAutoUpdater(feedUrl, (event) => {
+        for (const win of BrowserWindow.getAllWindows()) {
+          if (!win.isDestroyed()) win.webContents.send('update:status', event);
+        }
+        if (event.status === 'available') {
+          trayManager?.sendNotification(
+            'MetonaAI 更新可用',
+            `新版本 ${event.latestVersion} 已发布，可在 设置 → 日志与数据 中下载安装`,
+          );
+        }
+      });
+    }
+  }
+
   // ===== 全局快捷键 =====
   windowManager.registerGlobalShortcuts();
 

electron/preload.ts

@@ -36,6 +36,8 @@ const metonaAPI = {
     },
     /** 中断会话 */
     abortSession: (sessionId: string) => ipcRenderer.invoke('agent:abortSession', sessionId),
+    /** v0.8.0 P1-1a: 拉取后台会话流式回放缓冲（切回运行中会话时恢复内容） */
+    getReplayState: (sessionId: string) => ipcRenderer.invoke('agent:getReplayState', sessionId),
     /** 监听 Provider 切换通知 */
     onProviderSwitched: (callback: (data: unknown) => void) => {
       const listener = (_event: Electron.IpcRendererEvent, data: unknown) => callback(data);
@@ -72,6 +74,13 @@ const metonaAPI = {
     /** P2-11: 截断消息（编辑重发/重新生成——删除锚点消息之后的所有消息） */
     truncateAfter: (sessionId: string, messageId: string, inclusive?: boolean) =>
       ipcRenderer.invoke('sessions:truncateAfter', sessionId, messageId, inclusive),
+    // v0.8.0 P2-1: 回收站（软删除 30 天保留）
+    listTrash: () => ipcRenderer.invoke('sessions:listTrash'),
+    restore: (sessionId: string) => ipcRenderer.invoke('sessions:restore', sessionId),
+    purge: (sessionId: string) => ipcRenderer.invoke('sessions:purge', sessionId),
+    // v0.8.0 P2-2: 会话回放（JSONL 录制读取）
+    listRecordings: (sessionId: string) => ipcRenderer.invoke('sessions:listRecordings', sessionId),
+    readRecording: (name: string) => ipcRenderer.invoke('sessions:readRecording', name),
     /** v0.5.0: 全文搜索会话内容（FTS5，跨会话，按会话聚合） */
     searchContent: (query: string) =>
       ipcRenderer.invoke('sessions:searchContent', query) as Promise<{
@@ -99,6 +108,8 @@ const metonaAPI = {
     removeServer: (name: string) => ipcRenderer.invoke('mcp:removeServer', name),
     toggleServer: (name: string, enabled: boolean) =>
       ipcRenderer.invoke('mcp:toggleServer', name, enabled),
+    // v0.8.0 P2-5: Resources / Prompts 发现
+    listServerContents: (name: string) => ipcRenderer.invoke('mcp:listServerContents', name),
   },
 
   // ===== 记忆系统 =====
@@ -239,6 +250,15 @@ const metonaAPI = {
         | { status: 'up-to-date'; latestVersion: string }
         | { status: 'available'; latestVersion: string; downloadUrl?: string; notes?: string }
       >,
+    // v0.8.0 P2-3: 下载并安装更新（electron-updater；仅生产环境可用）
+    updateInstall: () =>
+      ipcRenderer.invoke('app:updateInstall') as Promise<{ success: boolean; error?: string }>,
+    // v0.8.0 P2-3: 订阅更新状态事件（checking/available/downloading/downloaded/error）
+    onUpdateStatus: (callback: (event: unknown) => void) => {
+      const listener = (_event: Electron.IpcRendererEvent, data: unknown) => callback(data);
+      ipcRenderer.on('update:status', listener);
+      return () => ipcRenderer.removeListener('update:status', listener);
+    },
     // #49 修复: 前端错误上报通道（主进程可注册 'error:report' handler 记录到 electron-log/审计日志）
     // 使用 send（单向）而非 invoke，即使主进程未注册 handler 也不会 reject
     reportError: (payload: unknown) => ipcRenderer.send('error:report', payload),
@@ -296,6 +316,10 @@ const metonaAPI = {
     // #51 修复: 校验源数据库完整性（PRAGMA integrity_check），用于 inheritDatabase 前置校验
     checkDatabaseIntegrity: (sourcePath: string) =>
       ipcRenderer.invoke('workspace:checkDatabaseIntegrity', sourcePath),
+    // v0.8.0 P2-4: @ 文件提及（文件名索引 + 文本片段读取）
+    listFiles: (limit?: number) => ipcRenderer.invoke('workspace:listFiles', limit),
+    readFileClip: (relPath: string, maxBytes?: number) =>
+      ipcRenderer.invoke('workspace:readFileClip', relPath, maxBytes),
   },
 
   // ===== 工具管理 =====

electron/services/__tests__/database-migration.test.ts

@@ -281,15 +281,21 @@ describe.skipIf(!dbAvailable)('DatabaseService — 多版本迁移矩阵（user_
     rmSync(dir, { recursive: true, force: true });
   });
 
-  it('user_version=2 的库：快速路径跳过迁移，版本号保持不变', async () => {
+  it('user_version=2 的库：增量迁移至 SCHEMA_VERSION（v0.8.0 补 sessions.deleted_at）', async () => {
     const { DatabaseService } = await import('../database.service');
     const dir = mkdtempSync(join(tmpdir(), 'metona-migv2-'));
     const legacy = openLegacyDb(dir);
+    // v0.8.0 注: 真实 v2 库必含 sessions 表 —— fixture 补齐以覆盖迁移 10
     legacy.exec(`
       CREATE TABLE messages (
         id TEXT PRIMARY KEY, session_id TEXT NOT NULL, role TEXT NOT NULL,
         content TEXT, created_at INTEGER NOT NULL
       );
+      CREATE TABLE sessions (
+        id TEXT PRIMARY KEY, title TEXT DEFAULT '新会话', created_at INTEGER NOT NULL,
+        updated_at INTEGER NOT NULL, message_count INTEGER DEFAULT 0,
+        pinned INTEGER DEFAULT 0, archived INTEGER DEFAULT 0, metadata TEXT DEFAULT '{}'
+      );
       CREATE VIRTUAL TABLE messages_fts USING fts5(content, content=messages, content_rowid=rowid, tokenize='trigram');
     `);
     legacy.pragma('user_version = 2');
@@ -298,7 +304,14 @@ describe.skipIf(!dbAvailable)('DatabaseService — 多版本迁移矩阵（user_
     const svc = new DatabaseService(dir);
     svc.initialize();
     const db = svc.getDB();
-    expect(db.pragma('user_version', { simple: true })).toBe(2);
+    // v0.8.0 P2-1 契约更新: SCHEMA_VERSION 升至 3（迁移 10 sessions.deleted_at），
+    // user_version=2 的库不再是最新版 —— 会执行增量迁移并盖章到 3；
+    // FTS 已是 trigram（迁移 9 幂等跳过），增量迁移只补 sessions.deleted_at 列。
+    expect(db.pragma('user_version', { simple: true })).toBe(DatabaseService.SCHEMA_VERSION);
+    const delCol = db
+      .prepare("SELECT COUNT(*) AS c FROM pragma_table_info('sessions') WHERE name='deleted_at'")
+      .get() as { c: number };
+    expect(delCol.c).toBe(1);
     // 快速路径不重建 FTS（保持原有 trigram 表）
     const ftsSql = db
       .prepare(`SELECT sql FROM sqlite_master WHERE type='table' AND name='messages_fts'`)

electron/services/__tests__/session-search.test.ts

@@ -50,6 +50,7 @@ describe.skipIf(!dbAvailable)('FTS5 会话内容搜索', () => {
         message_count INTEGER DEFAULT 0,
         pinned INTEGER DEFAULT 0,
         archived INTEGER DEFAULT 0,
+        deleted_at INTEGER,
         metadata TEXT DEFAULT '{}'
       );
       CREATE TABLE messages (
@@ -281,6 +282,7 @@ describe.skipIf(!dbAvailable)('SessionService — 会话 CRUD 与消息边界',
         total_tokens INTEGER DEFAULT 0,
         pinned INTEGER DEFAULT 0,
         archived INTEGER DEFAULT 0,
+        deleted_at INTEGER,
         metadata TEXT DEFAULT '{}'
       );
       CREATE TABLE messages (
@@ -618,6 +620,7 @@ describe.skipIf(!dbAvailable)('searchMessages — 更多查询形态与边界',
         message_count INTEGER DEFAULT 0,
         pinned INTEGER DEFAULT 0,
         archived INTEGER DEFAULT 0,
+        deleted_at INTEGER,
         metadata TEXT DEFAULT '{}'
       );
       CREATE TABLE messages (
@@ -787,11 +790,26 @@ describe.skipIf(!dbAvailable)('searchMessages — 更多查询形态与边界',
     expect(hits.some((r: any) => r.sessionId === 'q8')).toBe(true);
   });
 
-  it('已删除会话的标题回退为占位文案（（已删除会话））', () => {
+  it('回收站会话（deleted_at 非空）从搜索结果整体剔除（v0.8.0 P2-1 契约）', () => {
-    // 消息引用已不存在的会话 id（真实库 FK 会阻止，此处验证 title 补全兜底）
+    // v0.8.0 P2-1 契约变更: 旧实现把缺标题的会话显示为"（已删除会话）"占位；
+    // 软删除引入后，回收站会话的搜索命中整体剔除（恢复后重新可见），
+    // 硬删除会话的消息已级联清除，占位分支不再可达。
     insertMessage('q9_m1', 'q9_ghost', 'user', 'ghostkeyword 消息', 1);
-    const hits = sessionService.searchMessages('ghostkeyword');
+    db.prepare(
-    expect(hits.some((r: any) => r.sessionTitle === '（已删除会话）')).toBe(true);
+      `INSERT INTO sessions (id, title, created_at, updated_at) VALUES ('q9_ghost', 'ghost', 1, 1)`,
+    ).run();
+    const before = sessionService.searchMessages('ghostkeyword');
+    expect(before.some((r: any) => r.sessionId === 'q9_ghost')).toBe(true);
+
+    // 软删除后 → 搜索不再命中
+    db.prepare(`UPDATE sessions SET deleted_at = ? WHERE id = 'q9_ghost'`).run(Date.now());
+    const after = sessionService.searchMessages('ghostkeyword');
+    expect(after.some((r: any) => r.sessionId === 'q9_ghost')).toBe(false);
+
+    // 恢复后 → 重新命中
+    db.prepare(`UPDATE sessions SET deleted_at = NULL WHERE id = 'q9_ghost'`).run();
+    const restored = sessionService.searchMessages('ghostkeyword');
+    expect(restored.some((r: any) => r.sessionId === 'q9_ghost')).toBe(true);
   });
 
   it('单字符 CJK 查询走 LIKE 回退命中子串', () => {
@@ -945,6 +963,7 @@ describe.skipIf(!dbAvailable)('saveMessage id 透传与 updateMessageContent（R
         message_count INTEGER DEFAULT 0,
         pinned INTEGER DEFAULT 0,
         archived INTEGER DEFAULT 0,
+        deleted_at INTEGER,
         metadata TEXT DEFAULT '{}'
       );
       CREATE TABLE messages (

electron/services/__tests__/session-summary.test.ts

@@ -56,6 +56,7 @@ describe.skipIf(!dbAvailable)('SessionSummary 分层上下文 × 截断交互',
         message_count INTEGER DEFAULT 0,
         pinned INTEGER DEFAULT 0,
         archived INTEGER DEFAULT 0,
+        deleted_at INTEGER,
         metadata TEXT DEFAULT '{}'
       );
       CREATE TABLE messages (
@@ -284,6 +285,7 @@ describe.skipIf(!dbAvailable)('clearMessages × 摘要游标交互（B-2）', ()
         message_count INTEGER DEFAULT 0,
         pinned INTEGER DEFAULT 0,
         archived INTEGER DEFAULT 0,
+        deleted_at INTEGER,
         metadata TEXT DEFAULT '{}'
       );
       CREATE TABLE messages (
@@ -392,6 +394,7 @@ describe.skipIf(!dbAvailable)('session_summaries 级联删除（F-3）', () => {
         message_count INTEGER DEFAULT 0,
         pinned INTEGER DEFAULT 0,
         archived INTEGER DEFAULT 0,
+        deleted_at INTEGER,
         metadata TEXT DEFAULT '{}'
       );
       CREATE TABLE session_summaries (
@@ -472,6 +475,7 @@ describe.skipIf(!dbAvailable)('maybeSummarize — 触发阈值与增量', () =>
         message_count INTEGER DEFAULT 0,
         pinned INTEGER DEFAULT 0,
         archived INTEGER DEFAULT 0,
+        deleted_at INTEGER,
         metadata TEXT DEFAULT '{}'
       );
       CREATE TABLE messages (
@@ -652,6 +656,7 @@ describe.skipIf(!dbAvailable)('buildHistoryMessages — 无摘要与 role 过滤
         message_count INTEGER DEFAULT 0,
         pinned INTEGER DEFAULT 0,
         archived INTEGER DEFAULT 0,
+        deleted_at INTEGER,
         metadata TEXT DEFAULT '{}'
       );
       CREATE TABLE messages (
@@ -746,6 +751,7 @@ describe.skipIf(!dbAvailable)('restoreHistoryImages — 更多边界', () => {
         message_count INTEGER DEFAULT 0,
         pinned INTEGER DEFAULT 0,
         archived INTEGER DEFAULT 0,
+        deleted_at INTEGER,
         metadata TEXT DEFAULT '{}'
       );
       CREATE TABLE messages (

electron/services/__tests__/session-trash.test.ts

@@ -0,0 +1,157 @@
+/**
+ * v0.8.0 P2-1: 会话回收站（软删除 30 天保留）回归测试。
+ *
+ * 钉住契约：
+ * - delete → 软删除（deleted_at 时间戳），list/getSession 不再返回，listDeleted 返回；
+ * - restore → 恢复到主列表；
+ * - purge → 硬删除（不可恢复）；
+ * - purgeExpiredTrash(30d) → 仅清理超期条目；
+ * - searchMessages 聚合剔除回收站会话。
+ *
+ * 运行要求：better-sqlite3 为 Electron ABI 构建（test:electron），系统 Node 下自动跳过。
+ */
+
+import { describe, it, expect, beforeAll, afterAll, vi } from 'vitest';
+
+vi.mock('electron-log', () => ({
+  default: { info: vi.fn(), warn: vi.fn(), error: vi.fn(), debug: vi.fn() },
+}));
+
+let dbAvailable = true;
+let Database: typeof import('better-sqlite3');
+try {
+  // eslint-disable-next-line @typescript-eslint/no-require-imports
+  Database = require('better-sqlite3');
+  const probe = new Database(':memory:');
+  probe.close();
+} catch {
+  dbAvailable = false;
+}
+
+describe.skipIf(!dbAvailable)('会话回收站（v0.8.0 P2-1）', () => {
+  let sessionService: any;
+  let db: InstanceType<typeof Database>;
+
+  beforeAll(async () => {
+    const { SessionService } = await import('../session.service');
+    db = new Database(':memory:');
+    db.pragma('foreign_keys = ON');
+    // 最小 schema（与 DatabaseService.createTables 对齐的关键列：deleted_at + 级联删除）
+    db.exec(`
+      CREATE TABLE sessions (
+        id TEXT PRIMARY KEY,
+        title TEXT DEFAULT '新会话',
+        created_at INTEGER NOT NULL,
+        updated_at INTEGER NOT NULL,
+        message_count INTEGER DEFAULT 0,
+        total_tokens INTEGER DEFAULT 0,
+        pinned INTEGER DEFAULT 0,
+        archived INTEGER DEFAULT 0,
+        deleted_at INTEGER,
+        metadata TEXT DEFAULT '{}'
+      );
+      CREATE TABLE messages (
+        id TEXT PRIMARY KEY,
+        session_id TEXT NOT NULL,
+        role TEXT NOT NULL,
+        content TEXT,
+        reasoning_content TEXT,
+        tool_calls TEXT,
+        tool_result TEXT,
+        attachments TEXT,
+        iteration INTEGER,
+        created_at INTEGER NOT NULL,
+        FOREIGN KEY (session_id) REFERENCES sessions(id) ON DELETE CASCADE
+      );
+      CREATE TABLE session_summaries (
+        session_id TEXT PRIMARY KEY,
+        summary TEXT NOT NULL,
+        summarized_until_rowid INTEGER NOT NULL,
+        updated_at INTEGER NOT NULL,
+        FOREIGN KEY (session_id) REFERENCES sessions(id) ON DELETE CASCADE
+      );
+    `);
+    sessionService = new SessionService(() => db);
+  });
+
+  afterAll(() => {
+    try {
+      db.close();
+    } catch {
+      /* ignore */
+    }
+  });
+
+  it('delete → 软删除：list 不返回、listDeleted 返回、getSession 排除', () => {
+    const a = sessionService.create('A');
+    const b = sessionService.create('B');
+    expect(sessionService.delete(a.id)).toBe(true);
+
+    const list = sessionService.list().map((s: { id: string }) => s.id);
+    expect(list).toContain(b.id);
+    expect(list).not.toContain(a.id);
+
+    const trash = sessionService.listDeleted().map((s: { id: string }) => s.id);
+    expect(trash).toEqual([a.id]);
+
+    expect(sessionService.getSession(a.id)).toBeNull();
+    expect(sessionService.getSession(b.id)).not.toBeNull();
+  });
+
+  it('restore → 恢复到主列表', () => {
+    const a = sessionService.listDeleted()[0];
+    expect(sessionService.restore(a.id)).toBe(true);
+    expect(sessionService.list().map((s: { id: string }) => s.id)).toContain(a.id);
+    expect(sessionService.listDeleted()).toHaveLength(0);
+  });
+
+  it('purge → 硬删除（仅对回收站条目生效）', () => {
+    const s = sessionService.create('temp');
+    sessionService.delete(s.id);
+    sessionService.saveMessage({ sessionId: s.id, role: 'user', content: 'x' });
+    expect(sessionService.purge(s.id)).toBe(true);
+
+    const count = db
+      .prepare('SELECT COUNT(*) AS c FROM messages WHERE session_id = ?')
+      .get(s.id) as {
+      c: number;
+    };
+    expect(count.c).toBe(0);
+    // 未删除的会话不可 purge（幂等保护）
+    const live = sessionService.create('live');
+    expect(sessionService.purge(live.id)).toBe(false);
+  });
+
+  it('purgeExpiredTrash(30d) → 仅清理超期条目', () => {
+    const old = sessionService.create('old');
+    sessionService.delete(old.id);
+    db.prepare('UPDATE sessions SET deleted_at = ? WHERE id = ?').run(
+      Date.now() - 31 * 24 * 60 * 60 * 1000,
+      old.id,
+    );
+
+    const fresh = sessionService.create('fresh');
+    sessionService.delete(fresh.id); // deleted_at = now
+
+    const purged = sessionService.purgeExpiredTrash(30);
+    expect(purged).toBe(1);
+    const remaining = db.prepare('SELECT COUNT(*) AS c FROM sessions WHERE id = ?').get(old.id) as {
+      c: number;
+    };
+    expect(remaining.c).toBe(0);
+    expect(sessionService.listDeleted().map((s: { id: string }) => s.id)).toContain(fresh.id);
+  });
+
+  it('searchMessages 聚合剔除回收站会话（≤2 字符 LIKE 回退路径）', () => {
+    const s1 = sessionService.create('搜索目标会话');
+    sessionService.saveMessage({ sessionId: s1.id, role: 'user', content: '量子计算机的独特内容' });
+    // '量子' ≤2 字符走 LIKE 回退（最小 schema 无 FTS 表，与生产 trigram 路径
+    // 共用同一个 aggregateSearchResults 聚合出口，剔除逻辑同源）
+    const r1 = sessionService.searchMessages('量子');
+    expect(r1.length).toBe(1);
+
+    sessionService.delete(s1.id);
+    const r2 = sessionService.searchMessages('量子');
+    expect(r2.length).toBe(0);
+  });
+});

electron/services/__tests__/session-truncate-trace.test.ts

@@ -45,6 +45,7 @@ describe.skipIf(!dbAvailable)('truncateMessagesAfter × TRACE metadata 过滤（
         message_count INTEGER DEFAULT 0,
         pinned INTEGER DEFAULT 0,
         archived INTEGER DEFAULT 0,
+        deleted_at INTEGER,
         metadata TEXT DEFAULT '{}'
       );
       CREATE TABLE messages (

electron/services/database.service.ts

@@ -113,8 +113,9 @@ export class DatabaseService {
    * 版本号相同的库将跳过整个探测式迁移批次。
    * v0.7.4 P4-4: 1 → 2 —— 迁移 9（messages_fts trigram）纳入版本化，
    * 失败中断批次不盖章 → 下次启动重试（根治"失败被吞 + 永久跳过"）。
+   * v0.8.0 P2-1: 2 → 3 —— 迁移 10（sessions.deleted_at 回收站软删除列）。
    */
-  static readonly SCHEMA_VERSION = 2;
+  static readonly SCHEMA_VERSION = 3;
 
   constructor(workspacePath?: string) {
     const baseDir = workspacePath ?? join(app.getPath('userData'), 'MetonaWorkspaces', 'default');
@@ -180,6 +181,7 @@ export class DatabaseService {
 
     db.exec(`
       -- ===== 会话表 =====
+      -- v0.8.0 P2-1: deleted_at 回收站软删除（NULL = 正常；时间戳 = 已删除待清理）
       CREATE TABLE IF NOT EXISTS sessions (
         id              TEXT PRIMARY KEY,
         title           TEXT NOT NULL DEFAULT '新会话',
@@ -189,6 +191,7 @@ export class DatabaseService {
         total_tokens    INTEGER NOT NULL DEFAULT 0,
         pinned          INTEGER NOT NULL DEFAULT 0,
         archived        INTEGER NOT NULL DEFAULT 0,
+        deleted_at      INTEGER,
         metadata        TEXT DEFAULT '{}'
       );
 
@@ -321,6 +324,8 @@ export class DatabaseService {
       CREATE INDEX IF NOT EXISTS idx_messages_role ON messages(role);
       CREATE INDEX IF NOT EXISTS idx_sessions_updated ON sessions(updated_at DESC);
       CREATE INDEX IF NOT EXISTS idx_sessions_pinned ON sessions(pinned DESC, updated_at DESC);
+      -- v0.8.0 P2-1: idx_sessions_deleted 由迁移 10 统一创建（createTables 的静态
+      -- CREATE INDEX 在"表存在但缺 deleted_at 列"的遗留库上会 no-such-column 失败）
       CREATE INDEX IF NOT EXISTS idx_audit_session ON audit_logs(session_id);
       CREATE INDEX IF NOT EXISTS idx_audit_type ON audit_logs(event_type);
       CREATE INDEX IF NOT EXISTS idx_audit_created ON audit_logs(created_at);
@@ -639,6 +644,19 @@ export class DatabaseService {
         // 非致命错误 — 如果迁移失败，NOT NULL 约束仍生效，saveMessage 会保存空字符串
       }
 
+      // v0.8.0 P2-1 迁移 10: sessions.deleted_at 回收站软删除列 + 索引
+      // 存在性守卫：极简遗留库（如 v2 盖章的早期测试库）可能没有 sessions 表，
+      // 迁移必须可重试且不因缺表中断整个批次
+      {
+        const hasSessions = db
+          .prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='sessions'")
+          .get();
+        if (hasSessions) {
+          tryAddColumn('sessions', 'deleted_at', 'INTEGER');
+          db.exec('CREATE INDEX IF NOT EXISTS idx_sessions_deleted ON sessions(deleted_at);');
+        }
+      }
+
       // v0.7.4 P4-4 迁移 9: messages_fts 升级 trigram tokenizer
       // 存量库的 messages_fts 建表语句不含 trigram —— 直接 DROP + 重建 + rebuild，
       // 使中文非连续子串搜索（trigram ≥3 字符）可用。检测方式：读 sqlite_master 的

electron/services/mcp-manager.service.ts

@@ -234,6 +234,20 @@ export interface MCPServerConfig {
   enabled: boolean;
 }
 
+/** v0.8.0 P2-5: MCP Resource / Prompt 发现条目（渲染端展示用宽松形态） */
+export interface MCPResourceInfo {
+  uri: string;
+  name: string;
+  description?: string;
+  mimeType?: string;
+}
+
+export interface MCPPromptInfo {
+  name: string;
+  description?: string;
+  arguments?: Array<{ name: string; description?: string; required?: boolean }>;
+}
+
 export interface MCPServerState {
   config: MCPServerConfig;
   status: MCPServerStatus;
@@ -241,6 +255,9 @@ export interface MCPServerState {
   tools: Tool[];
   error?: string;
   connectedAt?: number;
+  /** v0.8.0 P2-5: 发现的 Resources / Prompts（可选能力，未声明/失败时为空数组） */
+  resources: MCPResourceInfo[];
+  prompts: MCPPromptInfo[];
 }
 
 // ===== MCP Tool Adapter =====
@@ -506,6 +523,8 @@ export class MCPManager {
       status: 'connecting',
       client: null,
       tools: [],
+      resources: [],
+      prompts: [],
     });
 
     try {
@@ -558,6 +577,42 @@ export class MCPManager {
       const toolsResult = await client.listTools();
       const tools = toolsResult.tools ?? [];
 
+      // v0.8.0 P2-5: Resources / Prompts 发现（可选能力 —— server 未声明或
+      // 请求失败一律置空数组，不阻断连接与工具注册）
+      const discoveredResources: MCPResourceInfo[] = [];
+      const discoveredPrompts: MCPPromptInfo[] = [];
+      try {
+        const res = await client.listResources();
+        for (const r of res.resources ?? []) {
+          discoveredResources.push({
+            uri: String(r.uri ?? ''),
+            name: String(r.name ?? ''),
+            description: typeof r.description === 'string' ? r.description : undefined,
+            mimeType: typeof r.mimeType === 'string' ? r.mimeType : undefined,
+          });
+        }
+      } catch {
+        /* server 未声明 resources 能力 */
+      }
+      try {
+        const res = await client.listPrompts();
+        for (const p of res.prompts ?? []) {
+          discoveredPrompts.push({
+            name: String(p.name ?? ''),
+            description: typeof p.description === 'string' ? p.description : undefined,
+            arguments: Array.isArray(p.arguments)
+              ? p.arguments.map((a) => ({
+                  name: String(a.name ?? ''),
+                  description: typeof a.description === 'string' ? a.description : undefined,
+                  required: a.required === true,
+                }))
+              : undefined,
+          });
+        }
+      } catch {
+        /* server 未声明 prompts 能力 */
+      }
+
       // 注册到 ToolRegistry（v0.6.4: registerMCP 对重名冲突返回 false，此处聚合上报）
       let registeredCount = 0;
       let skippedCount = 0;
@@ -580,6 +635,8 @@ export class MCPManager {
       state.tools = tools;
       state.connectedAt = Date.now();
       state.error = undefined;
+      state.resources = discoveredResources;
+      state.prompts = discoveredPrompts;
 
       // v0.7.3 P4-2: 连接成功 —— 清零重连计数并取消排程
       this.reconnectAttempts.delete(name);
@@ -646,6 +703,8 @@ export class MCPManager {
     }
     state.client = null;
     state.tools = [];
+    state.resources = [];
+    state.prompts = [];
     this.notifyToolsChanged();
   }
 
@@ -801,6 +860,17 @@ export class MCPManager {
     };
   }
 
+  /**
+   * v0.8.0 P2-5: 获取 server 发现的 Resources / Prompts（未连接返回空集合）。
+   */
+  getServerContents(name: string): { resources: MCPResourceInfo[]; prompts: MCPPromptInfo[] } {
+    const state = this.servers.get(name);
+    if (!state || state.status !== 'connected') {
+      return { resources: [], prompts: [] };
+    }
+    return { resources: state.resources ?? [], prompts: state.prompts ?? [] };
+  }
+
   /**
    * 关闭所有连接
    */

electron/services/session.service.ts

@@ -81,6 +81,9 @@ export class SessionService {
 
   /**
    * 列出所有会话
+   *
+   * v0.8.0 P2-1: 排除回收站（deleted_at 非空）会话 —— 删除为软删除，
+   * 列表/查询面不再出现；回收站内容经 listDeleted 查看。
    */
   list(options?: { archived?: boolean }): SessionInfo[] {
     const db = this.getDBFn();
@@ -90,7 +93,7 @@ export class SessionService {
       .prepare(
         `
       SELECT * FROM sessions
-      WHERE archived = ?
+      WHERE archived = ? AND deleted_at IS NULL
       ORDER BY pinned DESC, updated_at DESC
     `,
       )
@@ -99,16 +102,74 @@ export class SessionService {
     return rows.map((row) => this.toSessionInfo(row));
   }
 
+  /**
+   * v0.8.0 P2-1: 列出回收站会话（deleted_at 非空，按删除时间倒序）
+   */
+  listDeleted(): SessionInfo[] {
+    const db = this.getDBFn();
+    const rows = db
+      .prepare(
+        `
+      SELECT * FROM sessions
+      WHERE deleted_at IS NOT NULL
+      ORDER BY deleted_at DESC
+    `,
+      )
+      .all() as SessionRow[];
+    return rows.map((row) => this.toSessionInfo(row));
+  }
+
+  /**
+   * v0.8.0 P2-1: 从回收站恢复会话（清除 deleted_at）
+   */
+  restore(sessionId: string): boolean {
+    const db = this.getDBFn();
+    const result = db
+      .prepare('UPDATE sessions SET deleted_at = NULL WHERE id = ? AND deleted_at IS NOT NULL')
+      .run(sessionId);
+    if (result.changes > 0) log.info(`Session restored from trash: ${sessionId}`);
+    return result.changes > 0;
+  }
+
+  /**
+   * v0.8.0 P2-1: 彻底删除（硬删除，级联清消息/摘要/任务）
+   */
+  purge(sessionId: string): boolean {
+    const db = this.getDBFn();
+    const result = db
+      .prepare('DELETE FROM sessions WHERE id = ? AND deleted_at IS NOT NULL')
+      .run(sessionId);
+    if (result.changes > 0) log.info(`Session purged from trash: ${sessionId}`);
+    return result.changes > 0;
+  }
+
+  /**
+   * v0.8.0 P2-1: 清理回收站中超过 maxAgeDays 的会话（硬删除，级联清理）
+   * 启动时与每 24h 定时调用（main.ts）。
+   */
+  purgeExpiredTrash(maxAgeDays = 30): number {
+    const db = this.getDBFn();
+    const cutoff = Date.now() - maxAgeDays * 24 * 60 * 60 * 1000;
+    const rows = db
+      .prepare('SELECT id FROM sessions WHERE deleted_at IS NOT NULL AND deleted_at < ?')
+      .all(cutoff) as Array<{ id: string }>;
+    for (const row of rows) {
+      db.prepare('DELETE FROM sessions WHERE id = ?').run(row.id);
+    }
+    return rows.length;
+  }
+
   /**
    * v0.7.4 P1-4: 按 ID 查询会话（含归档会话）。
    * 供 agent:sendMessage 前置存在性预检 —— 指向已删除会话的消息会在 saveMessage
-   * 因 FK 约束抛错，提前校验可走统一的 ERROR+DONE 收尾路径而非 invoke reject。
+   * 因 FK 约束（foreign_keys=ON）抛错，提前校验可走统一的 ERROR+DONE 收尾路径而非 invoke reject。
+   * v0.8.0 P2-1: 排除回收站会话（deleted_at 非空 = 已删除，消息不可继续发送）。
    */
   getSession(sessionId: string): SessionInfo | null {
     const db = this.getDBFn();
-    const row = db.prepare('SELECT * FROM sessions WHERE id = ?').get(sessionId) as
+    const row = db
-      | SessionRow
+      .prepare('SELECT * FROM sessions WHERE id = ? AND deleted_at IS NULL')
-      | undefined;
+      .get(sessionId) as SessionRow | undefined;
     return row ? this.toSessionInfo(row) : null;
   }
 
@@ -163,14 +224,20 @@ export class SessionService {
   }
 
   /**
-   * 删除会话（级联删除消息）
+   * 删除会话
+   *
+   * v0.8.0 P2-1 根治: 改为**软删除**（置 deleted_at）—— 旧实现直接硬删除，
+   * 误删无法恢复。现进入回收站（listDeleted 查看，30 天后 purgeExpiredTrash
+   * 自动清理），彻底删除由 purge 显式触发（级联清消息）。
    */
   delete(sessionId: string): boolean {
     const db = this.getDBFn();
-    const result = db.prepare('DELETE FROM sessions WHERE id = ?').run(sessionId);
+    const result = db
+      .prepare('UPDATE sessions SET deleted_at = ? WHERE id = ? AND deleted_at IS NULL')
+      .run(Date.now(), sessionId);
 
     if (result.changes > 0) {
-      log.info(`Session deleted: ${sessionId}`);
+      log.info(`Session moved to trash: ${sessionId}`);
       return true;
     }
     return false;
@@ -606,14 +673,20 @@ export class SessionService {
     if (aggregated.size === 0) return [];
 
     // 补全会话标题（archived 一起搜——搜索不应因归档而缺结果）
+    // v0.8.0 P2-1: 回收站会话（deleted_at 非空）从搜索结果剔除
     const sessionIds = Array.from(aggregated.keys());
     const placeholders = sessionIds.map(() => '?').join(',');
     const titleRows = db
-      .prepare(`SELECT id, title FROM sessions WHERE id IN (${placeholders})`)
+      .prepare(`SELECT id, title, deleted_at FROM sessions WHERE id IN (${placeholders})`)
-      .all(...sessionIds) as Array<{ id: string; title: string }>;
+      .all(...sessionIds) as Array<{ id: string; title: string; deleted_at: number | null }>;
-    const titleMap = new Map(titleRows.map((r) => [r.id, r.title]));
+    const titleMap = new Map(
+      titleRows.filter((r) => r.deleted_at == null).map((r) => [r.id, r.title]),
+    );
+    const filteredAggregated = Array.from(aggregated.entries()).filter(([sid]) =>
+      titleMap.has(sid),
+    );
 
-    return Array.from(aggregated.entries())
+    return filteredAggregated
       .map(([sessionId, info]) => ({
         sessionId,
         sessionTitle: titleMap.get(sessionId) ?? '（已删除会话）',

electron/services/update.service.ts

@@ -1,15 +1,17 @@
 /**
- * UpdateService — 轻量自动更新检查（v0.6.4 P4-2）
+ * UpdateService — 轻量自动更新检查（v0.6.4 P4-2 引入，v0.8.0 P2-3 接入 electron-updater）
  *
- * 选型说明：完整方案为 electron-updater（需签名/发布通道配套）；本轮依赖冻结
+ * 双轨设计：
- * 且尚无发布基础设施，落地"feed 比对"最小闭环：
+ * 1. 手动检查（check()）：feed 比对式 —— 拉取版本清单 JSON 与当前版本比较，
- *   - 配置 app.updateFeedUrl 指向版本清单 JSON：
+ *    结果经 IPC 直接返回（不依赖 electron-updater，dev 模式同样可用）。
- *       { "version": "0.7.0", "url": "https://…/MetonaAI-Setup.exe", "notes": "…" }
+ * 2. 自动更新（startAutoUpdater，v0.8.0 P2-3）：生产环境接入 electron-updater
- *   - 用户点击"检查更新"→ 主进程拉取清单 → 语义化版本比较 → 结果经 toast/UI 反馈，
+ *    （generic provider），启动 5s 后静默检查；available → 广播 update:status +
- *     available 时提供下载直链（shell.openExternal 由既有 app:openExternal 白名单承接）。
+ *    系统通知；用户触发下载安装（app:updateInstall）→ downloadAndInstall 后重启。
- * 未来接入 electron-updater 时，本服务的 IPC 面与 UI 不变，仅替换 check() 实现。
+ *    未配置 feed / dev 模式 / electron-updater 不可用时静默禁用（可用性优先）。
  */
 
+import log from 'electron-log';
+
 export interface UpdateFeedInfo {
   version: string;
   url?: string;
@@ -22,6 +24,15 @@ export type UpdateCheckResult =
   | { status: 'up-to-date'; latestVersion: string }
   | { status: 'available'; latestVersion: string; downloadUrl?: string; notes?: string };
 
+/** v0.8.0 P2-3: 广播给渲染层的更新状态事件（update:status 通道载荷） */
+export type UpdateStatusEvent =
+  | { status: 'checking' }
+  | { status: 'available'; latestVersion: string; notes?: string }
+  | { status: 'not-available'; latestVersion: string }
+  | { status: 'downloading'; percent: number }
+  | { status: 'downloaded' }
+  | { status: 'error'; message: string };
+
 /**
  * 语义化版本比较（仅支持 Major.Minor.Patch 与可选的预发布后缀忽略策略：
  * 带预发布标签视为小于同号正式版）。非法输入返回 false（宁可不提示升级）。
@@ -91,3 +102,98 @@ export class UpdateService {
     }
   }
 }
+
+// ===== v0.8.0 P2-3: electron-updater 集成（生产环境自动更新） =====
+
+/** AutoUpdater 句柄（IPC 层消费；null = 未启用/dev 模式/未配置 feed） */
+export interface AutoUpdaterHandle {
+  checkForUpdates: () => Promise<void>;
+  downloadAndInstall: () => Promise<void>;
+}
+
+let activeHandle: AutoUpdaterHandle | null = null;
+
+/** 获取已启动的 AutoUpdater 句柄（app:updateInstall 消费；未启用时返回 null） */
+export function getAutoUpdaterHandle(): AutoUpdaterHandle | null {
+  return activeHandle;
+}
+
+/**
+ * 启动 electron-updater 自动更新（生产环境专用）。
+ *
+ * @param feedUrl 更新源根目录（generic provider；app.updateFeedUrl 配置）
+ * @param onEvent 状态事件回调（主进程广播 update:status 给渲染层）
+ * @param autoCheckDelayMs 启动后延迟检查时间（默认 5s，让窗口先就绪）
+ * @returns 句柄（未启用时返回 null —— dev / electron-updater 加载失败）
+ */
+export async function startAutoUpdater(
+  feedUrl: string,
+  onEvent: (event: UpdateStatusEvent) => void,
+  autoCheckDelayMs = 5_000,
+): Promise<AutoUpdaterHandle | null> {
+  if (!feedUrl) {
+    log.info('[Update] auto-updater disabled: no feed URL configured');
+    return null;
+  }
+  try {
+    // 动态导入：dev 模式（未打包）下 electron-updater 无法工作（无 app-update.yml），
+    // 加载失败时静默禁用，保持可用性
+    const { autoUpdater } = await import('electron-updater');
+    autoUpdater.autoDownload = false; // 下载需用户触发（app:updateInstall）
+    autoUpdater.autoInstallOnAppQuit = true;
+    autoUpdater.logger = null; // 事件统一经 onEvent 广播，避免双通道日志噪声
+
+    autoUpdater.on('checking-for-update', () => onEvent({ status: 'checking' }));
+    autoUpdater.on('update-available', (info) => {
+      onEvent({ status: 'available', latestVersion: String(info.version ?? ''), notes: undefined });
+    });
+    autoUpdater.on('update-not-available', (info) => {
+      onEvent({ status: 'not-available', latestVersion: String(info.version ?? '') });
+    });
+    autoUpdater.on('download-progress', (progress) => {
+      onEvent({ status: 'downloading', percent: Math.round(progress.percent ?? 0) });
+    });
+    autoUpdater.on('update-downloaded', () => onEvent({ status: 'downloaded' }));
+    autoUpdater.on('error', (err) => {
+      onEvent({ status: 'error', message: (err as Error).message });
+    });
+
+    // generic provider feed（app-update.yml 缺失时显式 setFeedURL 兜底）
+    autoUpdater.setFeedURL({ provider: 'generic', url: feedUrl });
+
+    const handle: AutoUpdaterHandle = {
+      checkForUpdates: async () => {
+        try {
+          await autoUpdater.checkForUpdates();
+        } catch (err) {
+          onEvent({ status: 'error', message: (err as Error).message });
+        }
+      },
+      downloadAndInstall: async () => {
+        try {
+          await autoUpdater.downloadUpdate();
+          onEvent({ status: 'downloaded' });
+          autoUpdater.quitAndInstall();
+        } catch (err) {
+          onEvent({ status: 'error', message: (err as Error).message });
+        }
+      },
+    };
+    activeHandle = handle;
+
+    // 启动 5s 后静默检查（不阻塞窗口就绪）
+    const timer = setTimeout(() => {
+      void handle.checkForUpdates();
+    }, autoCheckDelayMs);
+    timer.unref?.();
+
+    log.info(`[Update] auto-updater started (feed=${feedUrl})`);
+    return handle;
+  } catch (err) {
+    log.warn(
+      '[Update] electron-updater unavailable, auto-update disabled:',
+      (err as Error).message,
+    );
+    return null;
+  }
+}

electron/services/window-manager.service.ts

@@ -27,6 +27,18 @@ export interface WindowState {
 export class WindowManager {
   private windows = new Map<string, BrowserWindow>();
   private activeWindowId: string | null = null;
+  /**
+   * v0.8.0 P1-3.7: 渲染进程崩溃自愈退避 —— 按 window id 记录 { count, windowStart }。
+   * 60s 窗口内连续崩溃 ≥3 次不再自动 reload（避免 crash→reload→crash 死循环），
+   * 改弹系统错误对话框；自上次 reload 起 5 分钟无崩溃则计数复位。
+   */
+  private crashReloadAttempts = new Map<
+    number,
+    { count: number; windowStart: number; lastAt: number }
+  >();
+  private static readonly CRASH_RELOAD_MAX = 3;
+  private static readonly CRASH_RELOAD_WINDOW_MS = 60_000;
+  private static readonly CRASH_RELOAD_RESET_MS = 5 * 60_000;
 
   /**
    * 创建新窗口
@@ -92,11 +104,51 @@ export class WindowManager {
 
     // 崩溃可观测性 + 自愈: 渲染进程崩溃（OOM/原生崩溃）时记录归因日志并自动重载，
     // 替代静默白屏（用户此前感知为"应用崩溃"且无从恢复）
+    // v0.8.0 P1-3.7: 增加退避 —— 60s 内连续 ≥3 次崩溃停止自动 reload 并弹窗
+    //（根因持久存在时旧实现会 crash→reload→crash 死循环）；稳定 5 分钟后计数复位。
     win.webContents.on('render-process-gone', (_event, details) => {
       log.error(
         `[WindowManager] render-process-gone (id=${win.id}): reason=${details.reason} exitCode=${details.exitCode}`,
       );
       if (!win.isDestroyed() && details.reason !== 'clean-exit') {
+        const now = Date.now();
+        const record = this.crashReloadAttempts.get(win.id) ?? {
+          count: 0,
+          windowStart: now,
+          lastAt: 0,
+        };
+        // 稳定 5 分钟 → 计数复位
+        if (record.lastAt > 0 && now - record.lastAt > WindowManager.CRASH_RELOAD_RESET_MS) {
+          record.count = 0;
+          record.windowStart = now;
+        }
+        // 60s 滑动窗口外 → 重新起算
+        if (now - record.windowStart > WindowManager.CRASH_RELOAD_WINDOW_MS) {
+          record.count = 0;
+          record.windowStart = now;
+        }
+        record.count += 1;
+        record.lastAt = now;
+        this.crashReloadAttempts.set(win.id, record);
+
+        if (record.count > WindowManager.CRASH_RELOAD_MAX) {
+          log.error(
+            `[WindowManager] Crash reload threshold exceeded (${record.count} in ${WindowManager.CRASH_RELOAD_WINDOW_MS / 1000}s) — NOT reloading automatically (crash loop protection)`,
+          );
+          try {
+            // showErrorBox 为同步 API（void 返回），崩溃循环保护路径直接弹窗
+            // eslint-disable-next-line @typescript-eslint/no-require-imports
+            const { dialog } = require('electron') as typeof import('electron');
+            dialog.showErrorBox(
+              'MetonaAI Desktop 反复崩溃',
+              `渲染进程在 ${WindowManager.CRASH_RELOAD_WINDOW_MS / 1000} 秒内连续崩溃 ${record.count} 次，已停止自动恢复。\n\n请重启应用；若反复出现，请携带日志（设置 → 日志与数据 → 打开日志目录）反馈。`,
+            );
+          } catch {
+            /* dialog 不可用时仅保留日志 */
+          }
+          return;
+        }
+
         try {
           win.webContents.reload();
           log.info(`[WindowManager] Window ${id} reloaded after renderer crash`);

electron/services/workspace.service.ts

@@ -12,10 +12,12 @@
  * @see standard/开发规范.md — 使用 fs/path 内置模块（非第三方库）
  */
 
-import { join } from 'path';
+import { join, resolve, sep } from 'path';
-import { existsSync, mkdirSync, readFileSync, writeFileSync } from 'fs';
+import { existsSync, mkdirSync, readFileSync, readdirSync, writeFileSync, statSync } from 'fs';
 import { app } from 'electron';
 import log from 'electron-log';
+// v0.8.0 P2-4: @ 提及文本片段的编码检测（与 read_file 同源）
+import { decodeBufferWithDetection } from '../harness/tools/built-in/file-guard';
 
 // ===== 类型定义 =====
 
@@ -138,6 +140,112 @@ export class WorkspaceService {
     return { ...this.files };
   }
 
+  // ===== v0.8.0 P2-4: @ 文件提及数据源 =====
+
+  /** 列出目录树时的噪声目录（依赖产物/版本库/运行时数据，永不进入提及索引） */
+  private static readonly MENTION_SKIP_DIRS = new Set([
+    'node_modules',
+    '.git',
+    'logs',
+    '.metona',
+    'dist',
+    'dist-electron',
+    'out',
+    'build',
+    'release',
+  ]);
+
+  /**
+   * 工作空间文件名索引（@ 文件提及联想数据源）。
+   *
+   * 同步递归收集相对路径；跳过 MENTION_SKIP_DIRS 与隐藏目录；深度上限 8；
+   * 数量上限 maxFiles（防超大工作空间拖慢主进程）。FileGuard 的 MEMORY.md
+   * 保护不适用于"文件名索引"（只列名字不读内容）。
+   */
+  listFiles(maxFiles = 2000): string[] {
+    const out: string[] = [];
+    const walk = (dir: string, rel: string, depth: number): void => {
+      if (out.length >= maxFiles || depth > 8) return;
+      let entries: import('fs').Dirent[];
+      try {
+        entries = readdirSync(dir, { withFileTypes: true });
+      } catch {
+        return;
+      }
+      for (const entry of entries) {
+        if (out.length >= maxFiles) return;
+        if (entry.name.startsWith('.')) continue;
+        if (entry.isDirectory() && WorkspaceService.MENTION_SKIP_DIRS.has(entry.name)) continue;
+        const relName = rel ? `${rel}/${entry.name}` : entry.name;
+        if (entry.isFile()) {
+          out.push(relName);
+        } else if (entry.isDirectory()) {
+          walk(join(dir, entry.name), relName, depth + 1);
+        }
+      }
+    };
+    walk(this.workspacePath, '', 0);
+    return out;
+  }
+
+  /**
+   * 读取 @ 提及文件的文本片段（≤ maxBytes，默认 512KB，二进制拒绝）。
+   *
+   * 安全：路径 resolve 后必须位于工作空间内；根目录 MEMORY.md 与工具读取
+   * 同口径保护（isProtectedWorkspaceFile）；文本判定复用 file-guard 的
+   * decodeBufferWithDetection（NUL 启发式在 BOM 之后仍命中则拒绝）。
+   */
+  readFileClip(
+    relPath: string,
+    maxBytes = 512 * 1024,
+  ): {
+    success: boolean;
+    error?: string;
+    name?: string;
+    content?: string;
+    truncated?: boolean;
+    size?: number;
+  } {
+    try {
+      const resolved = resolve(this.workspacePath, relPath);
+      if (resolved !== this.workspacePath && !resolved.startsWith(this.workspacePath + sep)) {
+        return { success: false, error: 'Path escapes workspace' };
+      }
+      if (!existsSync(resolved) || !statSync(resolved).isFile()) {
+        return { success: false, error: 'File not found' };
+      }
+      // 根目录 MEMORY.md 保护（与 read_file 工具同口径）
+      if (
+        resolve(resolved).toLowerCase() === resolve(this.workspacePath, 'MEMORY.md').toLowerCase()
+      ) {
+        return { success: false, error: 'Access to workspace root MEMORY.md is protected' };
+      }
+      const size = statSync(resolved).size;
+      const buf = readFileSync(resolved);
+      const head = buf.subarray(0, Math.min(buf.length, 8192));
+      // 二进制判定：非 UTF-16 BOM 前缀下含 NUL 字节 → 拒绝（文本附件语义）
+      const isUtf16Bom =
+        (head[0] === 0xff && head[1] === 0xfe) || (head[0] === 0xfe && head[1] === 0xff);
+      if (!isUtf16Bom) {
+        for (const b of head) {
+          if (b === 0)
+            return { success: false, error: 'Binary file is not supported for @ mention' };
+        }
+      }
+      const clipped = buf.length > maxBytes ? buf.subarray(0, maxBytes) : buf;
+      const { content } = decodeBufferWithDetection(clipped);
+      return {
+        success: true,
+        name: relPath,
+        content,
+        truncated: buf.length > maxBytes,
+        size,
+      };
+    } catch (err) {
+      return { success: false, error: (err as Error).message };
+    }
+  }
+
   /**
    * 更新 MEMORY.md 的最后更新时间戳
    */

electron/utils/__tests__/pinned-proxy.test.ts

@@ -0,0 +1,194 @@
+/**
+ * v0.8.0 P1-4/P1-5: Pinned CONNECT 代理 + 配置 URL 深校验测试。
+ *
+ * - pinned-proxy：公网/私网目标的 CONNECT 校验分流（resolver 注入 mock，
+ *   不触网）；端口分配与幂等启动。
+ * - assertSafeConfigTargetDeep：域名解析到云元数据 IP → 拒绝；DNS 失败 →
+ *   DeepCheckSoftFailure（软失败放行）；IP 字面量高危段 → 拒绝。
+ */
+
+import { describe, it, expect, afterAll } from 'vitest';
+import * as net from 'net';
+import {
+  createPinnedProxy,
+  ensurePinnedProxy,
+  isPinnedProxyActive,
+} from '../../utils/pinned-proxy';
+import {
+  assertSafeConfigTargetDeep,
+  DeepCheckSoftFailure,
+  __dnsLookup,
+} from '../../harness/tools/built-in/ssrf-guard';
+
+// ===== Pinned CONNECT 代理 =====
+
+describe('pinned CONNECT proxy (P1-4)', () => {
+  const keepAlive: Array<net.Server> = [];
+
+  it('public target → CONNECT tunnel established (200), traffic pinned to resolved IP', async () => {
+    // 本地 echo 服务器充当"上游"：mock resolver 把域名 pin 到 127.0.0.1，
+    // 验证隧道建立后字节双向透传（不触公网）
+    const echo = net.createServer((socket) => {
+      socket.pipe(socket);
+    });
+    await new Promise<void>((r) => echo.listen(0, '127.0.0.1', r));
+    const echoPort = (echo.address() as net.AddressInfo).port;
+    keepAlive.push(echo);
+
+    const proxy = await createPinnedProxy(async () => {
+      // 校验通过 → 返回校验期锁定的 IP（pinning 语义：连接用同一批 IP）
+      return ['127.0.0.1'];
+    });
+    keepAlive.push(proxy as unknown as net.Server);
+
+    const target = net.connect({ host: '127.0.0.1', port: proxy.port });
+    const result = await new Promise<string>((resolve, reject) => {
+      const timer = setTimeout(() => reject(new Error('timeout')), 3_000);
+      let buf = '';
+      target.on('data', (d) => {
+        buf += d.toString();
+        if (buf.includes('\r\n\r\n')) {
+          // 200 已到 → 隧道建立，写 payload 验证透传
+          target.write(`ping-to-${echoPort}`);
+        }
+        if (buf.includes(`ping-to-${echoPort}`)) {
+          clearTimeout(timer);
+          resolve(buf.split('\r\n')[0]);
+        }
+      });
+      target.on('error', (e) => {
+        clearTimeout(timer);
+        reject(e);
+      });
+      target.write(`CONNECT example.com:${echoPort} HTTP/1.1\r\nHost: example.com\r\n\r\n`);
+    });
+    expect(result).toContain('200');
+    target.destroy();
+    echo.close();
+    await proxy.close();
+  });
+
+  it('private/metadata target → 403 rejected (fail-closed)', async () => {
+    const proxy = await createPinnedProxy(async () => {
+      throw new Error('Blocked SSRF: resolves to private IP');
+    });
+    const target = net.connect({ host: '127.0.0.1', port: proxy.port });
+    const response = await new Promise<string>((resolve, reject) => {
+      const timer = setTimeout(() => reject(new Error('timeout')), 2_000);
+      let buf = '';
+      target.on('data', (d) => {
+        buf += d.toString();
+        if (buf.includes('\r\n\r\n')) {
+          clearTimeout(timer);
+          resolve(buf.split('\r\n')[0]);
+        }
+      });
+      target.on('error', (e) => {
+        clearTimeout(timer);
+        reject(e);
+      });
+      target.write('CONNECT 169.254.169.254:80 HTTP/1.1\r\nHost: 169.254.169.254\r\n\r\n');
+    });
+    expect(response).toContain('403');
+    target.destroy();
+    await proxy.close();
+  });
+
+  it('invalid CONNECT target → 400', async () => {
+    const proxy = await createPinnedProxy(async () => ['1.2.3.4']);
+    const target = net.connect({ host: '127.0.0.1', port: proxy.port });
+    const response = await new Promise<string>((resolve, reject) => {
+      const timer = setTimeout(() => reject(new Error('timeout')), 2_000);
+      let buf = '';
+      target.on('data', (d) => {
+        buf += d.toString();
+        if (buf.includes('\r\n\r\n')) {
+          clearTimeout(timer);
+          resolve(buf.split('\r\n')[0]);
+        }
+      });
+      target.on('error', (e) => {
+        clearTimeout(timer);
+        reject(e);
+      });
+      target.write('CONNECT no-port-target HTTP/1.1\r\n\r\n');
+    });
+    expect(response).toContain('400');
+    target.destroy();
+    await proxy.close();
+  });
+
+  it('ensurePinnedProxy: idempotent start + active flag', async () => {
+    const port1 = await ensurePinnedProxy();
+    const port2 = await ensurePinnedProxy();
+    expect(port1).not.toBeNull();
+    expect(port2).toBe(port1);
+    expect(isPinnedProxyActive()).toBe(true);
+  }, 10_000);
+
+  afterAll(() => {
+    for (const s of keepAlive) {
+      try {
+        s.close();
+      } catch {
+        /* ignore */
+      }
+    }
+  });
+});
+
+// ===== 配置 URL 深校验 =====
+
+describe('assertSafeConfigTargetDeep (P1-5)', () => {
+  it('hostname resolving to metadata IP → rejected', async () => {
+    const original = __dnsLookup.current;
+    __dnsLookup.current = (async () => [
+      { address: '169.254.169.254', family: 4 },
+    ]) as unknown as typeof __dnsLookup.current;
+    try {
+      await expect(assertSafeConfigTargetDeep('https://attacker.example/search')).rejects.toThrow(
+        /high-risk/,
+      );
+    } finally {
+      __dnsLookup.current = original;
+    }
+  });
+
+  it('hostname resolving to public IP → allowed', async () => {
+    const original = __dnsLookup.current;
+    __dnsLookup.current = (async () => [
+      { address: '93.184.216.34', family: 4 },
+    ]) as unknown as typeof __dnsLookup.current;
+    try {
+      await expect(assertSafeConfigTargetDeep('https://example.com')).resolves.toBeUndefined();
+    } finally {
+      __dnsLookup.current = original;
+    }
+  });
+
+  it('DNS failure → DeepCheckSoftFailure (soft-fail allow, caller logs)', async () => {
+    const original = __dnsLookup.current;
+    __dnsLookup.current = (async () => {
+      throw new Error('ENOTFOUND');
+    }) as unknown as typeof __dnsLookup.current;
+    try {
+      await expect(assertSafeConfigTargetDeep('https://offline.example')).rejects.toBeInstanceOf(
+        DeepCheckSoftFailure,
+      );
+    } finally {
+      __dnsLookup.current = original;
+    }
+  });
+
+  it('IP-literal link-local target → rejected without DNS', async () => {
+    await expect(assertSafeConfigTargetDeep('http://169.254.169.254/latest')).rejects.toThrow(
+      /link-local|metadata/,
+    );
+  });
+
+  it('loopback target → allowed (local SearXNG/MCP legit)', async () => {
+    await expect(
+      assertSafeConfigTargetDeep('http://127.0.0.1:8080/search'),
+    ).resolves.toBeUndefined();
+  });
+});

electron/utils/network-proxy.ts

@@ -24,6 +24,9 @@
 
 import { session } from 'electron';
 import log from 'electron-log';
+// v0.8.0 P1-4: Agent 浏览器分区的 Pinned 代理状态探测（避免覆盖浏览器通道
+// 的 SSRF pinning 代理设置）
+import { isPinnedProxyActive } from './pinned-proxy';
 
 const AGENT_BROWSER_PARTITION = 'persist:metona-agent-browser';
 
@@ -50,9 +53,23 @@ export async function applySessionProxy(proxyUrl: string | null | undefined): Pr
   try {
     const config = rules !== '' ? { proxyRules: rules } : { mode: 'direct' as const };
     await session.defaultSession.setProxy(config);
+    // v0.8.0 P1-4: agent-browser 分区的代理优先级 ——
+    // ① 用户显式配置了代理（rules 非空）→ 用户代理语义优先，覆盖 Pinned 代理
+    //   （M7 已知限制口径：该模式下浏览器通道无 pinning）；
+    // ② 未配置代理但 Pinned 代理已激活 → 不动该分区（保留浏览器通道 SSRF pinning）；
+    // ③ 其余 → 显式直连。
+    if (rules !== '' || !isPinnedProxyActive()) {
       await session.fromPartition(AGENT_BROWSER_PARTITION).setProxy(config);
       log.info(
-      `[Network] Chromium sessions proxy ${rules === '' ? 'set to direct (no proxy)' : `rules: ${rules}`}`,
+        `[Network] agent-browser partition proxy ${rules === '' ? 'set to direct' : `rules: ${rules}`}`,
+      );
+    } else {
+      log.info(
+        '[Network] agent-browser partition left on SSRF pinned proxy (no user proxy configured)',
+      );
+    }
+    log.info(
+      `[Network] Chromium default session proxy ${rules === '' ? 'set to direct (no proxy)' : `rules: ${rules}`}`,
     );
   } catch (err) {
     log.warn(

electron/utils/pinned-proxy.ts

@@ -0,0 +1,267 @@
+/**
+ * Pinned CONNECT Proxy — Agent 浏览器通道的 SSRF 根治层（v0.8.0 P1-4）
+ *
+ * 背景：web_fetch 的浏览器回退通道与 web_browser 走 Chromium 自有网络栈，
+ * 此前只有工具入口一次 SSRF 校验 —— Chromium 自己解析 DNS，入口校验通过到
+ * 实际连接之间若攻击者切换 DNS（TTL=0），可借隐藏浏览器触达内网（DNS
+ * rebinding 残余窗口，比 HTTP 通道的 DNS pinning 防线弱一档）。
+ *
+ * 根治方案：主进程启动本地 HTTP 代理（127.0.0.1 随机端口），Agent 浏览器
+ * 分区（persist:metona-agent-browser）的全部流量经此代理：
+ * - CONNECT（https）：解析目标 host → resolvePublicAddresses 校验（与工具
+ *   入口同策略：仅公网）→ **直连校验阶段锁定的 IP** 建立隧道。TLS/SNI/证书
+ *   校验仍由 Chromium 端到端完成（隧道内字节透传，不做 MITM），既闭
+ *   rebinding 又不破坏 HTTPS。
+ * - 绝对形式 HTTP：同校验后按 pinned IP 转发。
+ * - 校验失败 → 403 拒绝 + WARN 日志（fail-closed）。
+ *
+ * 边界（显式记录）：
+ * - 用户已配置 network.proxyUrl（isProxyActive()）时，调用方不启用本代理，
+ *   保持用户代理语义 —— 代理模式下 DNS 在代理端解析，pinning 不可实现
+ *   （与 M7 结论一致，该场景的已知限制维持原文档口径）。
+ * - 代理启动失败时降级为"无 pinned 代理"（可用性优先），仅 WARN，不阻断
+ *   浏览器工具。
+ */
+
+import * as http from 'http';
+import * as net from 'net';
+import log from 'electron-log';
+import { resolvePublicAddresses } from '../harness/tools/built-in/ssrf-guard';
+
+/** 校验函数签名（可注入以便测试；默认为生产实现 resolvePublicAddresses） */
+export type AddressResolver = (url: string) => Promise<string[]>;
+
+export interface PinnedProxy {
+  /** 本地监听端口（127.0.0.1） */
+  port: number;
+  /** 停止代理服务器 */
+  close: () => Promise<void>;
+}
+
+/** 解析 "host:port" 形态（CONNECT 请求行目标） */
+function splitHostPort(target: string): { host: string; port: number } | null {
+  const lastColon = target.lastIndexOf(':');
+  if (lastColon <= 0) return null;
+  let host = target.slice(0, lastColon);
+  const portStr = target.slice(lastColon + 1);
+  // IPv6 字面量目标：去方括号（resolvePublicAddresses 侧已处理 [host] 形态）
+  if (host.startsWith('[') && host.endsWith(']')) {
+    host = host.slice(1, -1);
+  }
+  const port = Number(portStr);
+  if (!Number.isInteger(port) || port <= 0 || port > 65535) return null;
+  return { host, port };
+}
+
+/** 400/403 之类的简易响应后断开 */
+function rejectRequest(socket: net.Socket, status: string, body: string): void {
+  if (socket.writable) {
+    socket.write(
+      `HTTP/1.1 ${status}\r\nConnection: close\r\nContent-Length: ${body.length}\r\n\r\n${body}`,
+    );
+  }
+  socket.destroy();
+}
+
+/**
+ * 创建 Pinned 代理服务器（工厂形式，测试可注入 resolver）。
+ *
+ * @param resolve 地址校验/解析实现（默认 resolvePublicAddresses —— 仅公网放行）
+ */
+export function createPinnedProxy(
+  resolve: AddressResolver = resolvePublicAddresses,
+): Promise<PinnedProxy> {
+  const server = http.createServer((req, res) => {
+    // 绝对形式 HTTP（Chromium 经代理的明文请求）：同校验后按 pinned IP 转发
+    void handlePlainHttp(req, res, resolve);
+  });
+  server.on('connect', (req, clientSocket, head) => {
+    void handleConnect(req, clientSocket as net.Socket, head, resolve);
+  });
+  server.on('clientError', (_err, socket) => {
+    try {
+      socket.destroy();
+    } catch {
+      /* ignore */
+    }
+  });
+
+  return new Promise<PinnedProxy>((resolvePromise, rejectPromise) => {
+    const onError = (err: Error): void => {
+      server.removeListener('listening', onListening);
+      rejectPromise(err);
+    };
+    const onListening = (): void => {
+      server.removeListener('error', onError);
+      const addr = server.address();
+      const port = typeof addr === 'object' && addr ? addr.port : 0;
+      resolvePromise({
+        port,
+        close: () =>
+          new Promise<void>((res) => {
+            server.close(() => res());
+          }),
+      });
+    };
+    server.once('error', onError);
+    server.once('listening', onListening);
+    server.listen(0, '127.0.0.1');
+  });
+}
+
+/** CONNECT 隧道：校验目标 → 直连 pinned IP → 双向管道 */
+async function handleConnect(
+  req: http.IncomingMessage,
+  clientSocket: net.Socket,
+  head: Buffer,
+  resolve: AddressResolver,
+): Promise<void> {
+  const target = req.url ?? '';
+  const parsed = splitHostPort(target);
+  if (!parsed) {
+    rejectRequest(clientSocket, '400 Bad Request', 'Invalid CONNECT target');
+    return;
+  }
+  const { host, port } = parsed;
+
+  let ips: string[];
+  try {
+    // 以 http(s) 形式构造 URL 供 resolvePublicAddresses 校验（其只关心协议与 host；
+    // 443 用 https 仅为语义准确，校验逻辑对两者一致）
+    const scheme = port === 443 ? 'https' : 'http';
+    ips = await resolve(`${scheme}://${host}:${port}`);
+  } catch (err) {
+    log.warn(`[PinnedProxy] CONNECT ${host}:${port} blocked: ${(err as Error).message}`);
+    rejectRequest(clientSocket, '403 Forbidden', 'SSRF validation failed');
+    return;
+  }
+
+  const upstream = net.connect({ host: ips[0] ?? host, port });
+  let established = false;
+
+  upstream.once('connect', () => {
+    established = true;
+    if (clientSocket.writable) {
+      clientSocket.write('HTTP/1.1 200 Connection Established\r\n\r\n');
+      if (head && head.length > 0) upstream.write(head);
+      clientSocket.pipe(upstream);
+      upstream.pipe(clientSocket);
+    } else {
+      upstream.destroy();
+    }
+  });
+
+  const cleanup = (): void => {
+    try {
+      clientSocket.destroy();
+    } catch {
+      /* ignore */
+    }
+    try {
+      upstream.destroy();
+    } catch {
+      /* ignore */
+    }
+  };
+  clientSocket.once('error', cleanup);
+  clientSocket.once('close', () => {
+    if (established) cleanup();
+  });
+  upstream.once('error', (err) => {
+    log.warn(`[PinnedProxy] upstream error for ${host}:${port}: ${(err as Error).message}`);
+    if (!established) {
+      rejectRequest(clientSocket, '502 Bad Gateway', 'Upstream connect failed');
+    } else {
+      cleanup();
+    }
+  });
+}
+
+/** 绝对形式 HTTP 转发：校验目标 → 按 pinned IP 发起请求 → 回写响应 */
+async function handlePlainHttp(
+  req: http.IncomingMessage,
+  res: http.ServerResponse,
+  resolve: AddressResolver,
+): Promise<void> {
+  const rawUrl = req.url ?? '';
+  let parsed: URL;
+  try {
+    parsed = new URL(rawUrl);
+  } catch {
+    res.writeHead(400).end('Invalid absolute-form URL');
+    return;
+  }
+  if (parsed.protocol !== 'http:') {
+    // https 走 CONNECT，明文通道只处理 http 绝对形式
+    res.writeHead(400).end('Only http absolute-form supported (https uses CONNECT)');
+    return;
+  }
+
+  let ips: string[];
+  try {
+    ips = await resolve(rawUrl);
+  } catch (err) {
+    log.warn(`[PinnedProxy] HTTP ${parsed.host} blocked: ${(err as Error).message}`);
+    res.writeHead(403).end('SSRF validation failed');
+    return;
+  }
+
+  const port = parsed.port ? Number(parsed.port) : 80;
+  const upstreamReq = http.request(
+    {
+      host: ips[0] ?? parsed.hostname,
+      port,
+      method: req.method,
+      path: parsed.pathname + parsed.search,
+      headers: { ...req.headers, host: parsed.host },
+    },
+    (upstreamRes) => {
+      res.writeHead(upstreamRes.statusCode ?? 502, upstreamRes.headers);
+      upstreamRes.pipe(res);
+    },
+  );
+  upstreamReq.on('error', (err) => {
+    log.warn(`[PinnedProxy] upstream http error for ${parsed.host}: ${(err as Error).message}`);
+    if (!res.headersSent) res.writeHead(502);
+    res.end('Upstream request failed');
+  });
+  req.pipe(upstreamReq);
+}
+
+// ===== 模块级单例（BrowserWindowManager / network-proxy 消费） =====
+
+let singleton: PinnedProxy | null = null;
+let starting: Promise<PinnedProxy | null> | null = null;
+
+/** 是否已有 Pinned 代理在运行（applySessionProxy 据此决定是否覆盖分区代理） */
+export function isPinnedProxyActive(): boolean {
+  return singleton !== null;
+}
+
+/**
+ * 确保 Pinned 代理已启动，返回端口；失败返回 null（调用方降级为无 pinned 代理）。
+ * 幂等：并发调用共享同一次启动。
+ */
+export async function ensurePinnedProxy(): Promise<number | null> {
+  if (singleton) return singleton.port;
+  if (!starting) {
+    starting = (async (): Promise<PinnedProxy | null> => {
+      try {
+        singleton = await createPinnedProxy();
+        log.info(`[PinnedProxy] SSRF-pinned proxy listening on 127.0.0.1:${singleton.port}`);
+        return singleton;
+      } catch (err) {
+        log.warn(
+          '[PinnedProxy] failed to start pinned proxy (browser channel falls back to unpinned):',
+          err,
+        );
+        singleton = null;
+        return null;
+      } finally {
+        starting = null;
+      }
+    })();
+  }
+  const result = await starting;
+  return result?.port ?? null;
+}

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "metona-ai-desktop",
-  "version": "0.7.4",
+  "version": "0.8.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "metona-ai-desktop",
-      "version": "0.7.4",
+      "version": "0.8.0",
       "license": "MIT",
       "dependencies": {
         "@emotion/react": "^11.14.0",
@@ -19,6 +19,7 @@
         "date-fns": "^4.1.0",
         "dotenv": "^17.4.2",
         "electron-log": "^5.3.3",
+        "electron-updater": "^6.8.9",
         "fuse.js": "^7.1.0",
         "i18next": "^26.4.0",
         "lru-cache": "^11.1.0",
@@ -3572,9 +3573,9 @@
       }
     },
     "node_modules/@typescript-eslint/eslint-plugin/node_modules/ignore": {
-      "version": "7.0.6",
+      "version": "7.0.8",
-      "resolved": "https://registry.npmmirror.com/ignore/-/ignore-7.0.6.tgz",
+      "resolved": "https://registry.npmmirror.com/ignore/-/ignore-7.0.8.tgz",
-      "integrity": "sha512-BAg6QkE8W+TuQLrrw0Ugr7HegXduRuuj8/ti2kSOc+jz1dmx8/WNcjr6XGnq5YpDWxFwwaavqD0+jIUOKelTsw==",
+      "integrity": "sha512-YYNsSlXBjMk92SKnkwvB5LOVSa6OznlFUGcsvrFgNJbJCd0M1XKeFVRc8ZByeCqz32FivYNHJVooLmdqrmvp/Q==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -4263,7 +4264,6 @@
       "version": "2.0.1",
       "resolved": "https://registry.npmmirror.com/argparse/-/argparse-2.0.1.tgz",
       "integrity": "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==",
-      "dev": true,
       "license": "Python-2.0"
     },
     "node_modules/aria-query": {
@@ -4665,7 +4665,6 @@
       "version": "9.7.0",
       "resolved": "https://registry.npmmirror.com/builder-util-runtime/-/builder-util-runtime-9.7.0.tgz",
       "integrity": "sha512-g/kR520giAFYkSXTzcmF3kqQq7wi8F6N6SzeDgZrqTBN+VHdmgWOyTdD1yD7AATDId/yXLvuP34CxW46/BwCdw==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "debug": "^4.3.4",
@@ -5953,6 +5952,69 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/electron-updater": {
+      "version": "6.8.9",
+      "resolved": "https://registry.npmmirror.com/electron-updater/-/electron-updater-6.8.9.tgz",
+      "integrity": "sha512-ZhVxM9iGONUpZGI1FxdMRgJjUFXi7AYGVa5PwKlO1tV1/4zDxQmfKpXOHVztKrd6L9rLcFjERvi1Mf2vxyTkig==",
+      "license": "MIT",
+      "dependencies": {
+        "builder-util-runtime": "9.7.0",
+        "fs-extra": "^10.1.0",
+        "js-yaml": "^4.1.0",
+        "lazy-val": "^1.0.5",
+        "lodash.escaperegexp": "^4.1.2",
+        "lodash.isequal": "^4.5.0",
+        "semver": "~7.7.3",
+        "tiny-typed-emitter": "^2.1.0"
+      }
+    },
+    "node_modules/electron-updater/node_modules/fs-extra": {
+      "version": "10.1.0",
+      "resolved": "https://registry.npmmirror.com/fs-extra/-/fs-extra-10.1.0.tgz",
+      "integrity": "sha512-oRXApq54ETRj4eMiFzGnHWGy+zo5raudjuxN0b8H7s/RU2oW0Wvsx9O0ACRN/kRq9E8Vu/ReskGB5o3ji+FzHQ==",
+      "license": "MIT",
+      "dependencies": {
+        "graceful-fs": "^4.2.0",
+        "jsonfile": "^6.0.1",
+        "universalify": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/electron-updater/node_modules/jsonfile": {
+      "version": "6.2.1",
+      "resolved": "https://registry.npmmirror.com/jsonfile/-/jsonfile-6.2.1.tgz",
+      "integrity": "sha512-zwOTdL3rFQ/lRdBnntKVOX6k5cKJwEc1HdilT71BWEu7J41gXIB2MRp+vxduPSwZJPWBxEzv4yH1wYLJGUHX4Q==",
+      "license": "MIT",
+      "dependencies": {
+        "universalify": "^2.0.0"
+      },
+      "optionalDependencies": {
+        "graceful-fs": "^4.1.6"
+      }
+    },
+    "node_modules/electron-updater/node_modules/semver": {
+      "version": "7.7.4",
+      "resolved": "https://registry.npmmirror.com/semver/-/semver-7.7.4.tgz",
+      "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/electron-updater/node_modules/universalify": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmmirror.com/universalify/-/universalify-2.0.1.tgz",
+      "integrity": "sha512-gptHNQghINnc/vTGIk0SOFGFNXw7JVrlRUtConJRlvaw6DuX0wO5Jeko9sWrMBhh+PsYAZ7oXAiOnf/UKogyiw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 10.0.0"
+      }
+    },
     "node_modules/electron-vite": {
       "version": "3.1.0",
       "resolved": "https://registry.npmmirror.com/electron-vite/-/electron-vite-3.1.0.tgz",
@@ -7192,7 +7254,6 @@
       "version": "4.2.11",
       "resolved": "https://registry.npmmirror.com/graceful-fs/-/graceful-fs-4.2.11.tgz",
       "integrity": "sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ==",
-      "dev": true,
       "license": "ISC"
     },
     "node_modules/has-flag": {
@@ -7874,7 +7935,6 @@
       "version": "4.2.0",
       "resolved": "https://registry.npmmirror.com/js-yaml/-/js-yaml-4.2.0.tgz",
       "integrity": "sha512-ePWsvanv0DWuDRsW8dnt+R4jQ31SCRCQ7hhNcPXZPsoBZiemuZNYGf7adZdqX2D86j6rvKp3RpCxVTSb8WQlOw==",
-      "dev": true,
       "funding": [
         {
           "type": "github",
@@ -8023,7 +8083,6 @@
       "version": "1.0.5",
       "resolved": "https://registry.npmmirror.com/lazy-val/-/lazy-val-1.0.5.tgz",
       "integrity": "sha512-0/BnGCCfyUMkBpeDgWihanIAF9JmZhHBgUhEqzvf+adhNGLoP6TaiI5oF8oyb3I45P+PcnrqihSf01M0l0G5+Q==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/levn": {
@@ -8344,9 +8403,9 @@
       }
     },
     "node_modules/lint-staged/node_modules/tinyexec": {
-      "version": "1.3.0",
+      "version": "1.3.1",
-      "resolved": "https://registry.npmmirror.com/tinyexec/-/tinyexec-1.3.0.tgz",
+      "resolved": "https://registry.npmmirror.com/tinyexec/-/tinyexec-1.3.1.tgz",
-      "integrity": "sha512-QKAl9m8gWWGHV8jZcPeym6j+XULi6tOf1mT83WYJ4Lk2ytW/uwAWkrP0uFsdoYMdueVJ0qs26wZ+23xeB4ibNQ==",
+      "integrity": "sha512-GCvB3aoys96IuDFBMcTB46JOR6mdMtAToqwiW8JlWhsoh1mhHi/xn9ss/Dg7N555GiJyEt2qzoG/NHCwM6h1EA==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -8376,6 +8435,19 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/lodash.escaperegexp": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmmirror.com/lodash.escaperegexp/-/lodash.escaperegexp-4.1.2.tgz",
+      "integrity": "sha512-TM9YBvyC84ZxE3rgfefxUWiQKLilstD6k7PTGt6wfbtXF8ixIJLOL3VYyV/z+ZiPLsVxAsKAFVwWlWeb2Y8Yyw==",
+      "license": "MIT"
+    },
+    "node_modules/lodash.isequal": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmmirror.com/lodash.isequal/-/lodash.isequal-4.5.0.tgz",
+      "integrity": "sha512-pDo3lu8Jhfjqls6GkMgpahsF9kCyayhgykjyLMNFTKWrpVdAQtYyB4muAMWozBB4ig/dtWAmsMxLEI8wuz+DYQ==",
+      "deprecated": "This package is deprecated. Use require('node:util').isDeepStrictEqual instead.",
+      "license": "MIT"
+    },
     "node_modules/lodash.merge": {
       "version": "4.6.2",
       "resolved": "https://registry.npmmirror.com/lodash.merge/-/lodash.merge-4.6.2.tgz",
@@ -9653,9 +9725,9 @@
       }
     },
     "node_modules/node-gyp/node_modules/undici": {
-      "version": "6.28.0",
+      "version": "6.28.1",
-      "resolved": "https://registry.npmmirror.com/undici/-/undici-6.28.0.tgz",
+      "resolved": "https://registry.npmmirror.com/undici/-/undici-6.28.1.tgz",
-      "integrity": "sha512-LIY910g9TI13YS95lrMFrs8Rm/u/irgHeTWoKCoteeJ04CUJ92eEfj0rVn+7VKMPBpUPiUoBKfhNyLI23EE/KA==",
+      "integrity": "sha512-zWpdTVD54H48CIybL0rWQ3ukpb9d23wM7eH5RtfdmeP70cWHNjtfo7P4vZX+5CoDcO53J4Pu5uXp7lNfjc6DRA==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -10989,7 +11061,6 @@
       "version": "1.6.0",
       "resolved": "https://registry.npmmirror.com/sax/-/sax-1.6.0.tgz",
       "integrity": "sha512-6R3J5M4AcbtLUdZmRv2SygeVaM7IhrLXu9BmnOGmmACak8fiUtOsYNWUS4uK7upbmHIBbLBeFeI//477BKLBzA==",
-      "dev": true,
       "license": "BlueOak-1.0.0",
       "engines": {
         "node": ">=11.0.0"
@@ -11718,6 +11789,12 @@
         "semver": "bin/semver"
       }
     },
+    "node_modules/tiny-typed-emitter": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmmirror.com/tiny-typed-emitter/-/tiny-typed-emitter-2.1.0.tgz",
+      "integrity": "sha512-qVtvMxeXbVej0cQWKqVSSAHmKZEHAvxdF8HEUBFWts8h+xEo5m/lEiPakuyZ3BnCBjOD8i24kzNOiOLLgsSxhA==",
+      "license": "MIT"
+    },
     "node_modules/tinybench": {
       "version": "2.9.0",
       "resolved": "https://registry.npmmirror.com/tinybench/-/tinybench-2.9.0.tgz",
@@ -12012,9 +12089,9 @@
       }
     },
     "node_modules/undici": {
-      "version": "8.10.0",
+      "version": "8.10.2",
-      "resolved": "https://registry.npmmirror.com/undici/-/undici-8.10.0.tgz",
+      "resolved": "https://registry.npmmirror.com/undici/-/undici-8.10.2.tgz",
-      "integrity": "sha512-HvltHd7avK13QIw/oLe4qoOLyoVSoafqJ2jYOrtMRBkbYT31eiBQ8O0ehRKZiEZCMEyLFQNIADpgCWC5fALvYQ==",
+      "integrity": "sha512-/y4/bH9YNU5hi9NIrpOuvGXFcxrj3CMrV+/AYpowAYTpHn8gX/XPFjNy766FPoYY0miQhdW977JFWKGNhBdwyQ==",
       "license": "MIT",
       "engines": {
         "node": ">=22.19.0"

package.json

@@ -1,6 +1,6 @@
 {
   "name": "metona-ai-desktop",
-  "version": "0.7.4",
+  "version": "0.8.0",
   "description": "MetonaAI Desktop — 生产级通用 AI Agent 智能体桌面应用",
   "main": "dist-electron/main/main.js",
   "author": "Metona Team",
@@ -47,6 +47,7 @@
     "date-fns": "^4.1.0",
     "dotenv": "^17.4.2",
     "electron-log": "^5.3.3",
+    "electron-updater": "^6.8.9",
     "fuse.js": "^7.1.0",
     "i18next": "^26.4.0",
     "lru-cache": "^11.1.0",

src/__tests__/use-agent-stream.test.tsx

@@ -0,0 +1,129 @@
+// @vitest-environment jsdom
+/**
+ * v0.8.0 P0-4/P3-3: useAgentStream hook 级测试。
+ *
+ * 以前是流式链路最大零覆盖区（仅 stream-event-pipeline 纯函数有表测）。
+ * 本文件钉住 hook 的事件分派核心行为：
+ * - done(completed) → isStreaming=false / agentStatus=idle / runId 清空；
+ * - done(completed) + finishReason=length → 截断提示 system 消息（P0-4）；
+ * - error(output_length_exceeded) → 友好文案 system 消息（P0-4）；
+ * - reasoning_delta → 消息卡片思考内容累积；
+ * - text_delta → 正文增量累积。
+ *
+ * 事件总线（P1-1a）使 IPC 与回放共用同一入口：本测试直接经
+ * emitStreamBus 注入事件，无需真实 IPC。
+ */
+
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { renderHook } from '@testing-library/react';
+import { useAgentStream } from '../hooks/useAgentStream';
+import { useAgentStore } from '../stores/agent-store';
+import { emitStreamBus } from '../lib/stream-event-bus';
+import '@renderer/lib/i18n-strings';
+
+vi.mock('electron-log', () => ({
+  default: { info: vi.fn(), warn: vi.fn(), error: vi.fn(), debug: vi.fn() },
+}));
+
+function makeEvent(partial: Record<string, unknown>): Record<string, unknown> {
+  return {
+    type: 'text_delta',
+    requestId: 'r',
+    sessionId: 'sess_1',
+    iteration: 1,
+    seq: 0,
+    timestamp: Date.now(),
+    runId: 'run_x',
+    ...partial,
+  };
+}
+
+describe('useAgentStream（v0.8.0 P3-3 hook 级）', () => {
+  beforeEach(() => {
+    // 重置 store 到"流式中"的典型状态
+    useAgentStore.setState({
+      currentSessionId: 'sess_1',
+      isStreaming: true,
+      currentRunId: 'run_x',
+      agentStatus: 'thinking',
+      currentIteration: 1,
+      messages: [],
+      traceSteps: [
+        {
+          id: 'trace_1',
+          iteration: 1,
+          state: 'THINKING',
+          states: ['THINKING'],
+          startedAt: Date.now(),
+          runId: 'run_x',
+        },
+      ],
+      tokenUsage: {
+        inputTokens: 0,
+        outputTokens: 0,
+        totalTokens: 0,
+        lastInputTokens: 0,
+        lastCompressedSaved: 0,
+      },
+    });
+  });
+
+  it('done(completed) → 收尾：isStreaming=false、runId 清空、agentStatus=idle', () => {
+    renderHook(() => useAgentStream());
+    emitStreamBus('streamEvent', makeEvent({ type: 'done', terminationReason: 'completed' }));
+    const s = useAgentStore.getState();
+    expect(s.isStreaming).toBe(false);
+    expect(s.currentRunId).toBeNull();
+    expect(s.agentStatus).toBe('idle');
+  });
+
+  it('done(completed) + finishReason=length → 插入输出截断提示（P0-4）', () => {
+    renderHook(() => useAgentStream());
+    // 先产出一段正文（模拟截断前的部分回答）
+    emitStreamBus('streamEvent', makeEvent({ type: 'text_delta', delta: '部分回答' }));
+    emitStreamBus(
+      'streamEvent',
+      makeEvent({ type: 'done', terminationReason: 'completed', finishReason: 'length' }),
+    );
+    const s = useAgentStore.getState();
+    const notice = s.messages.find((m) => m.role === 'system');
+    expect(notice).toBeDefined();
+    expect(notice?.content).toContain('输出上限');
+    expect(s.isStreaming).toBe(false);
+  });
+
+  it("error(output_length_exceeded) → 友好文案（含'思考内容耗尽'提示）", () => {
+    renderHook(() => useAgentStream());
+    emitStreamBus(
+      'streamEvent',
+      makeEvent({
+        type: 'error',
+        error: { code: 'output_length_exceeded', message: 'raw message', retryable: false },
+      }),
+    );
+    const s = useAgentStore.getState();
+    expect(s.agentStatus).toBe('error');
+    const err = s.messages.find((m) => m.role === 'system');
+    expect(err?.content).toContain('思考内容耗尽');
+  });
+
+  it('reasoning_delta → 思考内容累积进 assistant 卡片', () => {
+    renderHook(() => useAgentStream());
+    emitStreamBus('streamEvent', makeEvent({ type: 'reasoning_delta', delta: '思考A' }));
+    emitStreamBus('streamEvent', makeEvent({ type: 'reasoning_delta', delta: '思考B', seq: 1 }));
+    const s = useAgentStore.getState();
+    const assistant = s.messages.find((m) => m.role === 'assistant');
+    expect(assistant?.reasoningContent).toBe('思考A思考B');
+  });
+
+  it('text_delta → 正文累积进 assistant 卡片（rAF 批处理 flush 后）', async () => {
+    renderHook(() => useAgentStream());
+    emitStreamBus('streamEvent', makeEvent({ type: 'text_delta', delta: '你好' }));
+    emitStreamBus('streamEvent', makeEvent({ type: 'text_delta', delta: '世界', seq: 1 }));
+    // text_delta 走 rAF 批处理 —— 等 2 帧让缓冲 flush
+    await new Promise((r) => setTimeout(r, 40));
+    const s = useAgentStore.getState();
+    const assistant = s.messages.find((m) => m.role === 'assistant');
+    expect(assistant?.content).toBe('你好世界');
+  });
+});

src/components/chat/ChatInput.tsx

@@ -9,7 +9,7 @@
  * @see docs/MetonaAI-Desktop UI UX 设计集成方案.html — 输入框智能特性
  */
 
-import { useState, useCallback, useRef, useEffect } from 'react';
+import { useState, useCallback, useRef, useEffect, useMemo } from 'react';
 import {
   Box,
   Typography,
@@ -22,7 +22,8 @@ import {
   List,
   ListItemButton,
 } from '@mui/material';
-import { Send, Paperclip, Square, X, FileText, Image as ImageIcon } from 'lucide-react';
+import { Send, Paperclip, Square, X, FileText, Image as ImageIcon, AtSign } from 'lucide-react';
+import Fuse from 'fuse.js';
 import { nanoid } from 'nanoid';
 import { useAgentStore } from '@renderer/stores/agent-store';
 import { useSessionStore } from '@renderer/stores/session-store';
@@ -102,6 +103,12 @@ export function ChatInput(): React.JSX.Element {
   const [attachments, setAttachments] = useState<Attachment[]>([]);
   const [showSlashMenu, setShowSlashMenu] = useState(false);
   const [slashFilter, setSlashFilter] = useState('');
+  // v0.8.0 P2-4: @ 文件提及 —— 联想弹层状态 + 工作空间文件索引（懒加载）
+  const [mentionOpen, setMentionOpen] = useState(false);
+  const [mentionQuery, setMentionQuery] = useState('');
+  const [mentionIndex, setMentionIndex] = useState(0);
+  const [workspaceFiles, setWorkspaceFiles] = useState<string[]>([]);
+  const workspaceFilesLoadedRef = useRef(false);
   const textareaRef = useRef<HTMLTextAreaElement>(null);
   const fileInputRef = useRef<HTMLInputElement>(null);
   const sendMessage = useAgentStore((s) => s.sendMessage);
@@ -302,6 +309,29 @@ export function ChatInput(): React.JSX.Element {
 
   // ===== 发送消息 =====
 
+  /**
+   * v0.8.0 P2-4: 从消息文本提取 @ 文件提及路径。
+   * 规则：'@' 前为单词字符（邮箱场景）跳过；路径字符集 [A-Za-z0-9._\-/]；
+   * 尾部 '.' 剥离（句末标点）；至少包含 '.' 或 '/'（排除纯代词式 @someone）。
+   */
+  const extractMentions = (text: string): string[] => {
+    const out: string[] = [];
+    for (let i = 0; i < text.length; i++) {
+      if (text[i] !== '@') continue;
+      if (i > 0 && /\w/.test(text[i - 1])) continue;
+      let j = i + 1;
+      let path = '';
+      while (j < text.length && /[A-Za-z0-9._\-/]/.test(text[j])) {
+        path += text[j];
+        j++;
+      }
+      path = path.replace(/\.+$/, '');
+      if (path && (path.includes('/') || path.includes('.'))) out.push(path);
+      i = j - 1;
+    }
+    return [...new Set(out)];
+  };
+
   const handleSend = useCallback(async () => {
     const trimmed = input.trim();
     if (!trimmed && attachments.length === 0) return;
@@ -387,10 +417,63 @@ export function ChatInput(): React.JSX.Element {
       }
     }
 
+    // v0.8.0 P2-4: @ 文件提及注入 —— 解析 @path token，读取文本片段并作为
+    // 文本附件注入（复用附件管线：UI 卡片 + 主进程"内容已内联/截断"提示）。
+    // 主进程 agent-store.sendMessage 会把 textContent 结构化内联进 LLM 消息。
+    const mentionInfos: Array<{
+      id: string;
+      name: string;
+      type: 'text';
+      size: number;
+      textContent: string;
+      truncated?: boolean;
+    }> = [];
+    const mentionedPaths = extractMentions(messageContent).slice(0, 5);
+    for (const p of mentionedPaths) {
+      try {
+        const clip = await window.metona?.workspace?.readFileClip?.(p);
+        if (clip?.success && typeof clip.content === 'string') {
+          let textContent = clip.content;
+          if (clip.truncated) {
+            textContent += t('input.text.truncatedNote', {
+              size: formatFileSize(clip.size ?? 0),
+              limit: formatFileSize(MAX_TEXT_ATTACHMENT_BYTES),
+            });
+          }
+          mentionInfos.push({
+            id: `mnt_${nanoid(6)}`,
+            name: p,
+            type: 'text',
+            size: clip.size ?? clip.content.length,
+            textContent,
+            truncated: clip.truncated,
+          });
+        } else {
+          import('@metona-team/metona-toast')
+            .then((mod) =>
+              mod.default.warning(
+                t('input.mention.failed', { path: p, reason: clip?.error ?? '' }),
+              ),
+            )
+            .catch(() => {});
+        }
+      } catch (err) {
+        import('@metona-team/metona-toast')
+          .then((mod) =>
+            mod.default.warning(
+              t('input.mention.failed', { path: p, reason: (err as Error).message }),
+            ),
+          )
+          .catch(() => {});
+      }
+    }
+
+    const allAttachmentInfos = [...attachmentInfos, ...mentionInfos];
+
     sendMessage(
       messageContent,
       images.length > 0 ? images : undefined,
-      attachmentInfos.length > 0 ? attachmentInfos : undefined,
+      allAttachmentInfos.length > 0 ? allAttachmentInfos : undefined,
     );
     setInput('');
     setAttachments([]);
@@ -403,8 +486,60 @@ export function ChatInput(): React.JSX.Element {
     abort();
   }, [abort]);
 
+  // v0.8.0 P2-4: @ 联想候选（Fuse 模糊匹配；query 为空时按路径字典序取前 8 条）
+  const mentionCandidates = useMemo(() => {
+    if (workspaceFiles.length === 0) return [];
+    if (!mentionQuery) return [...workspaceFiles].sort().slice(0, 8);
+    const fuse = new Fuse(workspaceFiles, { includeScore: true, threshold: 0.4 });
+    return fuse
+      .search(mentionQuery)
+      .map((r) => r.item)
+      .slice(0, 8);
+  }, [workspaceFiles, mentionQuery]);
+
+  // v0.8.0 P2-4: 选中候选 —— 把 "@query" 片段替换为 "@path"
+  const applyMention = useCallback(
+    (path: string): void => {
+      setInput((prev) => {
+        const pos = prev.lastIndexOf(`@${mentionQuery}`);
+        if (pos < 0) return `${prev}${path}`;
+        return `${prev.slice(0, pos)}@${path}${prev.slice(pos + mentionQuery.length + 1)}`;
+      });
+      setMentionOpen(false);
+      setMentionQuery('');
+      requestAnimationFrame(() => textareaRef.current?.focus());
+    },
+    [mentionQuery],
+  );
+
   const handleKeyDown = useCallback(
     (e: React.KeyboardEvent) => {
+      // v0.8.0 P2-4: @ 联想弹层的键盘导航（优先级高于发送/斜杠菜单）
+      if (mentionOpen && mentionCandidates.length > 0) {
+        if (e.key === 'ArrowDown') {
+          e.preventDefault();
+          setMentionIndex((i) => (i + 1) % mentionCandidates.length);
+          return;
+        }
+        if (e.key === 'ArrowUp') {
+          e.preventDefault();
+          setMentionIndex((i) => (i - 1 + mentionCandidates.length) % mentionCandidates.length);
+          return;
+        }
+        if (e.key === 'Tab' || e.key === 'Enter') {
+          if (e.key === 'Enter' && (e.nativeEvent.isComposing || e.keyCode === 229)) return;
+          e.preventDefault();
+          applyMention(mentionCandidates[Math.min(mentionIndex, mentionCandidates.length - 1)]);
+          return;
+        }
+        if (e.key === 'Escape') {
+          e.preventDefault();
+          setMentionOpen(false);
+          setMentionQuery('');
+          return;
+        }
+      }
+
       // H-9 修复: 快捷键对齐规范
       // @see docs/MetonaAI-Desktop UI UX 设计集成方案.html — 快捷键规范
       // 规范要求: Cmd/Ctrl+Enter = 发送消息, Cmd/Ctrl+Shift+Enter = 换行
@@ -456,7 +591,7 @@ export function ChatInput(): React.JSX.Element {
         return;
       }
     },
-    [handleSend, showSlashMenu],
+    [handleSend, showSlashMenu, mentionOpen, mentionCandidates, mentionIndex, applyMention],
   );
 
   // H-8 修复: 使用 InputBase 后，onChange 类型需兼容 HTMLInputElement | HTMLTextAreaElement
@@ -473,6 +608,30 @@ export function ChatInput(): React.JSX.Element {
       } else {
         setShowSlashMenu(false);
       }
+
+      // v0.8.0 P2-4: @ 文件提及触发 —— 光标前最后一个 '@' 到光标之间无空白时
+      // 视为提及输入中；空白/删除 '@' 即关闭。首次触发懒加载文件索引。
+      const pos = (e.target as HTMLTextAreaElement | HTMLInputElement).selectionStart ?? v.length;
+      const before = v.slice(0, pos);
+      const atIdx = before.lastIndexOf('@');
+      if (atIdx >= 0 && !/[\s]/.test(before.slice(atIdx + 1))) {
+        const q = before.slice(atIdx + 1);
+        setMentionOpen(true);
+        setMentionQuery(q);
+        setMentionIndex(0);
+        if (!workspaceFilesLoadedRef.current) {
+          workspaceFilesLoadedRef.current = true;
+          void window.metona?.workspace
+            ?.listFiles?.()
+            .then((r) => {
+              if (r?.success && r.data) setWorkspaceFiles(r.data);
+            })
+            .catch((err) => console.error('[ChatInput] listFiles failed:', err));
+        }
+      } else {
+        setMentionOpen(false);
+        setMentionQuery('');
+      }
     },
     [],
   );
@@ -560,6 +719,51 @@ export function ChatInput(): React.JSX.Element {
           </Paper>
         )}
 
+        {/* v0.8.0 P2-4: @ 文件提及联想弹层（MUI Paper+List，与斜杠菜单同形态） */}
+        {mentionOpen && mentionCandidates.length > 0 && (
+          <Paper
+            elevation={8}
+            sx={{
+              position: 'absolute',
+              bottom: '100%',
+              left: 0,
+              right: 0,
+              mb: 1,
+              maxHeight: 240,
+              overflow: 'auto',
+              borderRadius: 2,
+              border: '1px solid',
+              borderColor: 'divider',
+              bgcolor: 'background.paper',
+              zIndex: 10,
+            }}
+          >
+            <List dense disablePadding>
+              {mentionCandidates.map((path, idx) => (
+                <ListItemButton
+                  key={path}
+                  selected={idx === mentionIndex}
+                  onMouseEnter={() => setMentionIndex(idx)}
+                  onClick={() => applyMention(path)}
+                  sx={{ gap: 1, py: 0.75 }}
+                >
+                  <AtSign size={13} style={{ color: '#22d3ee', flexShrink: 0 }} />
+                  <Typography
+                    sx={{
+                      fontFamily: 'monospace',
+                      fontSize: 12,
+                      overflow: 'hidden',
+                      textOverflow: 'ellipsis',
+                    }}
+                  >
+                    {path}
+                  </Typography>
+                </ListItemButton>
+              ))}
+            </List>
+          </Paper>
+        )}
+
         <input
           ref={fileInputRef}
           type="file"

src/components/layout/DetailPanel.tsx

@@ -20,11 +20,16 @@ import { useUIStore, type DetailTab } from '@renderer/stores/ui-store';
 // v0.7.4 P3-1: 文案出层（字典含注册副作用，须在 t() 使用前 import）
 import { t } from '@renderer/lib/i18n';
 import '@renderer/lib/i18n-strings';
+// v0.8.0 P2-2: 会话回放（TRACE JSONL 播放器）
+import { SessionReplayButton } from '@renderer/components/trace/SessionReplayPlayer';
+import { useAgentStore } from '@renderer/stores/agent-store';
 
 export function DetailPanel(): React.JSX.Element {
   // v0.3.0: 从 ui-store 获取 tab 状态（支持斜杠命令切换）
   const tab = useUIStore((s) => s.detailTab);
   const setTab = useUIStore((s) => s.setDetailTab);
+  // v0.8.0 P2-2: 当前会话 ID（回放按钮的会话标识）
+  const currentSessionId = useAgentStore((s) => s.currentSessionId);
 
   // v0.3.0 修复：验证 tab 值有效性，非预期值回退到 'trace'
   const validTabs: DetailTab[] = ['trace', 'memory', 'tasks', 'workspace'];
@@ -97,6 +102,8 @@ export function DetailPanel(): React.JSX.Element {
               <TraceViewer />
               <TokenUsage />
               <AgentMonitor />
+              {/* v0.8.0 P2-2: 会话回放（TRACE JSONL 播放器） */}
+              <SessionReplayButton sessionId={currentSessionId} />
             </>
           </ErrorBoundary>
         )}

src/components/layout/Sidebar.tsx

@@ -272,6 +272,8 @@ export function Sidebar(): React.JSX.Element {
         {/* F-2 修复: 归档会话视图 —— 此前归档入口激活后（会话右键菜单），
             归档会话从列表永久消失且无恢复路径（数据在 DB 但 UI 不可达） */}
         <ArchivedSessionsPanel />
+        {/* v0.8.0 P2-1: 回收站 —— 软删除会话恢复/彻底删除 */}
+        <TrashSessionsPanel />
         <ToolManagerPanel />
       </Box>
     </Box>
@@ -379,6 +381,173 @@ function ArchivedSessionsPanel(): React.JSX.Element | null {
   );
 }
 
+/**
+ * v0.8.0 P2-1: 回收站折叠面板 —— 软删除会话的恢复 / 彻底删除入口。
+ * 自主拉取 sessions:listTrash（回收站数据不在 session-store 中）；
+ * 展开时刷新，恢复/彻底删除后同步刷新。彻底删除需确认（级联清消息，不可逆）。
+ */
+function TrashSessionsPanel(): React.JSX.Element | null {
+  const [expanded, setExpanded] = useState(false);
+  const [trash, setTrash] = useState<
+    Array<{ id: string; title: string; deletedAt?: number; updatedAt?: number }>
+  >([]);
+  const [purgeTarget, setPurgeTarget] = useState<{ id: string; title: string } | null>(null);
+
+  const refresh = async (): Promise<void> => {
+    try {
+      const rows = (await window.metona?.sessions?.listTrash()) ?? [];
+      setTrash(rows);
+    } catch (err) {
+      console.error('[Sidebar] listTrash failed:', err);
+    }
+  };
+
+  const handleExpand = (): void => {
+    const next = !expanded;
+    setExpanded(next);
+    if (next) void refresh();
+  };
+
+  const handleRestore = async (sessionId: string): Promise<void> => {
+    try {
+      const r = await window.metona?.sessions?.restore(sessionId);
+      if (r?.success) {
+        void refresh();
+      } else {
+        import('@metona-team/metona-toast')
+          .then((mod) => mod.default.error(r?.error ?? t('sidebar.toast.restoreFailed')))
+          .catch(() => {});
+      }
+    } catch (err) {
+      console.error('[Sidebar] Restore from trash failed:', err);
+    }
+  };
+
+  const handlePurge = async (): Promise<void> => {
+    if (!purgeTarget) return;
+    try {
+      const r = await window.metona?.sessions?.purge(purgeTarget.id);
+      if (r?.success) {
+        void refresh();
+      } else {
+        import('@metona-team/metona-toast')
+          .then((mod) => mod.default.error(r?.error ?? t('sidebar.toast.deleteFailed')))
+          .catch(() => {});
+      }
+    } catch (err) {
+      console.error('[Sidebar] Purge failed:', err);
+    } finally {
+      setPurgeTarget(null);
+    }
+  };
+
+  if (trash.length === 0 && !expanded) return null;
+
+  return (
+    <Box sx={{ mb: 1 }}>
+      <ListItemButton onClick={handleExpand} dense sx={{ borderRadius: 1, px: 1.5, py: 0.75 }}>
+        <ListItemIcon sx={{ minWidth: 24 }}>
+          {expanded ? <ChevronDown size={12} /> : <ChevronRight size={12} />}
+          <Trash2 size={12} style={{ marginLeft: 4 }} />
+        </ListItemIcon>
+        <ListItemText
+          primary={
+            <Typography variant="body2" sx={{ fontSize: 12 }}>
+              {t('sidebar.trash')}
+            </Typography>
+          }
+        />
+        {trash.length > 0 && (
+          <Typography variant="caption" sx={{ color: 'text.disabled', fontSize: 10 }}>
+            {t('sidebar.count', { count: trash.length })}
+          </Typography>
+        )}
+      </ListItemButton>
+      <Collapse in={expanded}>
+        <List
+          dense
+          disablePadding
+          sx={{
+            pl: 2,
+            maxHeight: 180,
+            overflowY: 'auto',
+            pr: 0.5,
+            '&::-webkit-scrollbar': { width: 6 },
+            '&::-webkit-scrollbar-thumb': { bgcolor: 'divider', borderRadius: 3 },
+          }}
+        >
+          {trash.length === 0 ? (
+            <Typography
+              variant="caption"
+              sx={{ px: 2, py: 1, display: 'block', color: 'text.disabled', fontSize: 11 }}
+            >
+              {t('sidebar.trash.empty')}
+            </Typography>
+          ) : (
+            trash.map((s) => (
+              <ListItemButton key={s.id} dense sx={{ py: 0.25, px: 1, borderRadius: 1 }}>
+                <Typography
+                  variant="caption"
+                  sx={{
+                    flex: 1,
+                    minWidth: 0,
+                    fontSize: 11,
+                    color: 'text.disabled',
+                    overflow: 'hidden',
+                    textOverflow: 'ellipsis',
+                    whiteSpace: 'nowrap',
+                  }}
+                  title={s.title}
+                >
+                  {s.title}
+                </Typography>
+                <Button
+                  size="small"
+                  sx={{ fontSize: 10, minWidth: 40, flexShrink: 0 }}
+                  onClick={(e) => {
+                    e.stopPropagation();
+                    void handleRestore(s.id);
+                  }}
+                >
+                  {t('sidebar.restore')}
+                </Button>
+                <Button
+                  size="small"
+                  color="error"
+                  sx={{ fontSize: 10, minWidth: 40, flexShrink: 0 }}
+                  onClick={(e) => {
+                    e.stopPropagation();
+                    setPurgeTarget({ id: s.id, title: s.title });
+                  }}
+                >
+                  {t('sidebar.trash.purge')}
+                </Button>
+              </ListItemButton>
+            ))
+          )}
+        </List>
+      </Collapse>
+      {/* 彻底删除确认（级联清消息，不可逆） */}
+      <Dialog open={purgeTarget !== null} onClose={() => setPurgeTarget(null)}>
+        <DialogTitle sx={{ fontSize: 14 }}>{t('sidebar.trash.purgeTitle')}</DialogTitle>
+        <DialogContent>
+          <Typography variant="body2" sx={{ fontSize: 12 }}>
+            {t('sidebar.trash.purgeBody', { title: purgeTarget?.title ?? '' })}
+          </Typography>
+        </DialogContent>
+        <DialogActions>
+          <Button size="small" onClick={() => setPurgeTarget(null)}>
+            {t('common.cancel')}
+          </Button>
+          <Button size="small" color="error" onClick={() => void handlePurge()}>
+            {t('sidebar.trash.purge')}
+          </Button>
+        </DialogActions>
+      </Dialog>
+    </Box>
+  );
+}
+
 function SessionItem({
   session,
   isActive,
@@ -624,6 +793,8 @@ function ToolManagerPanel() {
     low: 'LOW',
     medium: 'MEDIUM',
     high: 'HIGH',
+    // v0.8.0 P1-3.8: 补 critical —— 旧映射缺失导致 CRITICAL 工具显示原始字符串
+    critical: 'CRITICAL',
   };
   return (
     <Box>

src/components/memory/MemoryViewer.tsx

@@ -374,7 +374,7 @@ export function MemoryViewer(): React.JSX.Element {
             variant="caption"
             sx={{ textAlign: 'center', py: 4, display: 'block', color: 'text.disabled' }}
           >
-            暂无记忆数据
+            {t('memory.empty')}
           </Typography>
         ) : (
           MEMORY_TYPES.map((type) => {

src/components/settings/LLMSettings.tsx

@@ -32,6 +32,8 @@ import { PROVIDER_LABELS } from '@renderer/lib/constants';
 import { t } from '@renderer/lib/i18n';
 import '@renderer/lib/i18n-strings';
 import { PROVIDER_URLS } from './useConfig';
+// v0.8.0 FEAT-1: 输出上限配置可见性门控（Provider 支持矩阵）
+import { supportsOutputLimitConfig } from '@renderer/lib/model-capabilities';
 
 /** v0.7.2 P3-9: 动态模型条目（渲染端子集，与 global.d.ts MetonaModelInfoLite 对齐） */
 interface ModelOption {
@@ -39,6 +41,8 @@ interface ModelOption {
   name?: string;
   supportsToolCalling?: boolean;
   supportsThinking?: boolean;
+  /** v0.8.0 FEAT-1: 模型输出上限（llm:listModels 元数据，用于钳制提示） */
+  maxOutputTokens?: number;
   description?: string;
 }
 
@@ -52,6 +56,10 @@ export function LLMSettings() {
   const [apiKey, setApiKey] = useState<string>('');
   const [baseURL, setBaseURL] = useState<string>('');
   const [numCtx, setNumCtx] = useState<number | null>(null);
+  // v0.8.0 FEAT-1: 最大输出上限（llm.maxTokens，按请求传给 API；null = 使用引擎默认）
+  const [maxOutputTokens, setMaxOutputTokens] = useState<number | null>(null);
+  // v0.8.0 P0-3: agent.enableThinking（模型不支持思考时的联动提示）
+  const [agentThinkingEnabled, setAgentThinkingEnabled] = useState(true);
   // v0.3.1: DeepSeek/Agnes/MiMo contextWindow 可配置（不再写死）
   const [dsCtxWindow, setDsCtxWindow] = useState<number>(1000000);
   const [agnesCtxWindow, setAgnesCtxWindow] = useState<number>(1000000);
@@ -235,14 +243,18 @@ export function LLMSettings() {
           window.metona.config.get('llm.fallbackBaseURL'),
           // v0.5.4: 多模态开关
           window.metona.config.get('llm.multimodalEnabled'),
+          // v0.8.0 FEAT-1: 最大输出上限 + 思考开关（P0-3 模型能力联动提示）
+          window.metona.config.get('llm.maxTokens'),
+          window.metona.config.get('agent.enableThinking'),
         ]);
         if (cancelled) return;
-        const [p, m, k, u, nc, ds, ag, mi, oa, an, fbp, fbm, fbk, fbu, mm] = results;
+        const [p, m, k, u, nc, ds, ag, mi, oa, an, fbp, fbm, fbk, fbu, mm, mt, et] = results;
         setProvider((p as string) ?? '');
         setModel((m as string) ?? '');
         setApiKey((k as string) ?? '');
         setBaseURL((u as string) ?? '');
         setNumCtx((nc as number | null) ?? null);
+        if (typeof mt === 'number' && mt > 0) setMaxOutputTokens(mt);
         if (typeof ds === 'number' && ds > 0) setDsCtxWindow(ds);
         if (typeof ag === 'number' && ag > 0) setAgnesCtxWindow(ag);
         if (typeof mi === 'number' && mi > 0) setMimoCtxWindow(mi);
@@ -253,6 +265,7 @@ export function LLMSettings() {
         setFbApiKey((fbk as string) ?? '');
         setFbBaseURL((fbu as string) ?? '');
         setMultimodalEnabled(mm === true);
+        setAgentThinkingEnabled(et !== false);
       } catch (err) {
         console.error('[LLMSettings]', err);
       } finally {
@@ -313,12 +326,27 @@ export function LLMSettings() {
   const mimoCtxError = !Number.isFinite(mimoCtxWindow) || mimoCtxWindow < 4096;
   const oaCtxError = !Number.isFinite(oaCtxWindow) || oaCtxWindow < 4096;
   const anthropicCtxError = !Number.isFinite(anthropicCtxWindow) || anthropicCtxWindow < 4096;
+  // v0.8.0 FEAT-1: 最大输出上限校验（≥256；上限钳制由 adapter 按模型元信息执行）
+  const maxTokensError =
+    maxOutputTokens != null && (!Number.isFinite(maxOutputTokens) || maxOutputTokens < 256);
+
+  // v0.8.0 FEAT-1: 当前模型的输出上限元信息（模型列表已加载时展示钳制提示）
+  const modelMeta = model ? modelOptions.find((o) => o.id === model) : undefined;
+  const modelMaxOutput = modelMeta?.maxOutputTokens;
+  const exceedsModelCap =
+    maxOutputTokens != null &&
+    typeof modelMaxOutput === 'number' &&
+    maxOutputTokens > modelMaxOutput;
+  // v0.8.0 P0-3: 模型不支持思考 + 全局思考开关开启 → 联动提示
+  const thinkingUnsupportedByModel =
+    model != null && modelMeta?.supportsThinking === false && agentThinkingEnabled;
 
   // 是否存在阻断保存的错误（API Key 为空只警告，不阻断 — 允许先填其他字段再回来填 key）
   const hasBlockingError =
     urlError ||
     modelHasSpace ||
     numCtxError ||
+    maxTokensError ||
     (provider === 'deepseek' && dsCtxError) ||
     (provider === 'agnes' && agnesCtxError) ||
     (provider === 'mimo' && mimoCtxError) ||
@@ -370,6 +398,11 @@ export function LLMSettings() {
         { key: 'llm.baseURL', value: baseURL },
         // v0.5.4: 多模态总开关
         { key: 'llm.multimodalEnabled', value: multimodalEnabled },
+        // v0.8.0 FEAT-1: 最大输出上限（按请求传给 API；清空 = 引擎默认 63488）
+        {
+          key: 'llm.maxTokens',
+          value: maxOutputTokens != null && maxOutputTokens >= 256 ? maxOutputTokens : 63488,
+        },
         { key: 'ollama.numCtx', value: numCtx },
         { key: 'deepseek.contextWindow', value: dsCtxWindow },
         { key: 'agnes.contextWindow', value: agnesCtxWindow },
@@ -390,6 +423,16 @@ export function LLMSettings() {
       } else {
         // v0.5.4: 保存成功后同步多模态开关到 Agent Store（立即生效，控制上传入口）
         useAgentStore.getState().setMultimodalEnabled(multimodalEnabled);
+        // v0.8.0 FEAT-1: 配置值超过模型上限 → 明示"将按模型上限生效"
+        //（adapter 侧按 MODEL_INFO.maxOutputTokens 钳制，llm.maxTokens 经
+        // applyEngineConfigKey 热更新引擎，无需重启）
+        if (exceedsModelCap && typeof modelMaxOutput === 'number') {
+          import('@metona-team/metona-toast')
+            .then((mod) =>
+              mod.default.warning(t('llm.maxTokens.exceedCap', { cap: modelMaxOutput })),
+            )
+            .catch(() => {});
+        }
         import('@metona-team/metona-toast')
           .then((mod) => mod.default.success(t('llm.save.success')))
           .catch(() => {});
@@ -530,6 +573,37 @@ export function LLMSettings() {
           {t('llm.models.hint')}
         </Typography>
       </Stack>
+      {/* v0.8.0 P0-3: 模型不支持思考 × 全局思考开关 → 联动提示（adapter 侧已硬门控） */}
+      {thinkingUnsupportedByModel && (
+        <Typography variant="caption" sx={{ color: 'warning.main', fontSize: 11 }}>
+          {t('llm.thinking.unsupported')}
+        </Typography>
+      )}
+      {/* v0.8.0 FEAT-1: 最大输出上限 —— 仅对支持输出上限参数的 Provider 显示
+          （PROVIDER_OUTPUT_LIMIT_SUPPORT 矩阵门控；经 llm.maxTokens 热生效） */}
+      {supportsOutputLimitConfig(provider) && (
+        <TextField
+          size="small"
+          label={t('llm.maxTokens.label')}
+          type="number"
+          value={maxOutputTokens ?? ''}
+          onChange={(e) => {
+            const v = e.target.value;
+            setMaxOutputTokens(v === '' ? null : Number(v));
+          }}
+          slotProps={{ htmlInput: { min: 256, step: 256 } }}
+          error={maxTokensError}
+          helperText={
+            maxTokensError
+              ? t('llm.maxTokens.minError')
+              : exceedsModelCap && typeof modelMaxOutput === 'number'
+                ? t('llm.maxTokens.exceedCap', { cap: modelMaxOutput })
+                : typeof modelMaxOutput === 'number'
+                  ? `${t('llm.maxTokens.helper')} · ${t('llm.maxTokens.capInfo', { cap: modelMaxOutput })}`
+                  : t('llm.maxTokens.helper')
+          }
+        />
+      )}
       {/* v0.5.4: 多模态总开关 — 未开启时即使模型支持也不能上传图片 */}
       <FormControlLabel
         control={

src/components/settings/LogsSettings.tsx

@@ -21,6 +21,7 @@ import {
   Box,
   InputLabel,
   FormControl,
+  LinearProgress,
 } from '@mui/material';
 import { Folder, Copy, RefreshCw } from 'lucide-react';
 import { useConfig } from './useConfig';
@@ -374,6 +375,9 @@ export function LogsSettings() {
       {/* v0.7.3 P3-3: JSONL 录制文件生命周期（统计 + 手动清理） */}
       <TraceFilesPanel />
 
+      {/* v0.8.0 P2-3: 检查更新 / 下载安装（electron-updater 状态实时显示） */}
+      <UpdatePanel />
+
       {/* v0.7.3 P3-4: SLO / 健康快照可视化（只读 + 手动刷新） */}
       <HealthSnapshotPanel />
 
@@ -495,6 +499,107 @@ function TraceFilesPanel(): React.JSX.Element {
   );
 }
 
+// ===== v0.8.0 P2-3: 检查更新 / 下载安装（electron-updater） =====
+
+function UpdatePanel(): React.JSX.Element {
+  const [checking, setChecking] = useState(false);
+  const [installing, setInstalling] = useState(false);
+  const [result, setResult] = useState<string | null>(null);
+  const [progress, setProgress] = useState<number | null>(null);
+
+  useEffect(() => {
+    if (!window.metona?.app?.onUpdateStatus) return;
+    const off = window.metona.app.onUpdateStatus((event) => {
+      if (event.status === 'downloading') {
+        setProgress(event.percent ?? 0);
+      } else if (event.status === 'downloaded') {
+        setProgress(100);
+        setResult(t('settings.logs.update.downloaded'));
+      } else if (event.status === 'available') {
+        setResult(t('settings.logs.update.available', { version: event.latestVersion ?? '' }));
+      } else if (event.status === 'not-available') {
+        setResult(t('settings.logs.update.upToDate', { version: event.latestVersion ?? '' }));
+      } else if (event.status === 'error') {
+        setResult(t('settings.logs.update.error', { message: event.message ?? '' }));
+      }
+    });
+    return off;
+  }, []);
+
+  const handleCheck = async (): Promise<void> => {
+    setChecking(true);
+    setResult(null);
+    setProgress(null);
+    try {
+      const r = await window.metona?.app?.updateCheck();
+      if (r?.status === 'available') {
+        setResult(t('settings.logs.update.available', { version: r.latestVersion }));
+      } else if (r?.status === 'up-to-date') {
+        setResult(t('settings.logs.update.upToDate', { version: r.latestVersion }));
+      } else if (r?.status === 'disabled') {
+        setResult(t('settings.logs.update.disabled'));
+      } else if (r?.status === 'error') {
+        setResult(t('settings.logs.update.error', { message: r.message }));
+      }
+    } finally {
+      setChecking(false);
+    }
+  };
+
+  const handleInstall = async (): Promise<void> => {
+    setInstalling(true);
+    try {
+      const r = await window.metona?.app?.updateInstall();
+      if (r && r.success === false) {
+        setResult(t('settings.logs.update.error', { message: r.error ?? '' }));
+      }
+    } finally {
+      setInstalling(false);
+    }
+  };
+
+  return (
+    <>
+      <Divider />
+      <Typography variant="caption" sx={{ fontWeight: 600, color: 'text.secondary' }}>
+        {t('settings.logs.update.title')}
+      </Typography>
+      <Stack direction="row" spacing={1} sx={{ alignItems: 'center' }}>
+        <Button
+          variant="outlined"
+          size="small"
+          onClick={() => void handleCheck()}
+          disabled={checking}
+        >
+          {checking ? t('settings.logs.update.checking') : t('settings.logs.update.check')}
+        </Button>
+        <Button
+          variant="contained"
+          size="small"
+          onClick={() => void handleInstall()}
+          disabled={installing}
+        >
+          {installing
+            ? t('settings.logs.update.installing')
+            : t('settings.logs.update.downloadInstall')}
+        </Button>
+      </Stack>
+      {progress != null && (
+        <LinearProgress
+          variant="determinate"
+          value={progress}
+          sx={{ height: 6, borderRadius: 3 }}
+        />
+      )}
+      {result && (
+        <Typography variant="caption" sx={{ color: 'text.secondary', fontSize: 11 }}>
+          {result}
+        </Typography>
+      )}
+    </>
+  );
+}
+
 // ===== v0.7.3 P3-4: SLO / 健康快照可视化 =====
 
 function HealthSnapshotPanel(): React.JSX.Element {

src/components/settings/MCPSettings.tsx

@@ -164,6 +164,33 @@ export function MCPSettings() {
     }
   };
 
+  // v0.8.0 P2-5: Resources / Prompts 发现视图（按 server 名懒加载展开）
+  const [contentsFor, setContentsFor] = useState<string | null>(null);
+  const [contents, setContents] = useState<{
+    resources: Array<{ uri: string; name: string; description?: string; mimeType?: string }>;
+    prompts: Array<{
+      name: string;
+      description?: string;
+      arguments?: Array<{ name: string; description?: string; required?: boolean }>;
+    }>;
+  } | null>(null);
+  const handleToggleContents = async (name: string): Promise<void> => {
+    if (contentsFor === name) {
+      setContentsFor(null);
+      setContents(null);
+      return;
+    }
+    try {
+      const r = await window.metona?.mcp?.listServerContents?.(name);
+      if (r?.success && r.data) {
+        setContentsFor(name);
+        setContents(r.data);
+      }
+    } catch (err) {
+      console.error('[MCPSettings] listServerContents failed:', err);
+    }
+  };
+
   return (
     <Stack spacing={2}>
       <Typography variant="subtitle2" sx={{ fontWeight: 600 }}>
@@ -175,8 +202,8 @@ export function MCPSettings() {
         </Typography>
       ) : (
         servers.map((s) => (
+          <Box key={s.name}>
             <Stack
-            key={s.name}
               direction="row"
               sx={{
                 py: 1,
@@ -249,6 +276,50 @@ export function MCPSettings() {
                 </Button>
               </Stack>
             </Stack>
+            {s.status === 'connected' && (
+              <Button
+                size="small"
+                sx={{ fontSize: 10, mt: 0.5, alignSelf: 'flex-start' }}
+                onClick={() => void handleToggleContents(s.name)}
+              >
+                {contentsFor === s.name
+                  ? t('settings.mcp.contents.hide')
+                  : t('settings.mcp.contents.show')}
+              </Button>
+            )}
+            {contentsFor === s.name && contents && (
+              <Stack spacing={0.5} sx={{ mt: 0.5, pl: 1 }}>
+                {contents.resources.length === 0 && contents.prompts.length === 0 && (
+                  <Typography variant="caption" sx={{ color: 'text.disabled', fontSize: 11 }}>
+                    {t('settings.mcp.contents.empty')}
+                  </Typography>
+                )}
+                {contents.resources.map((r) => (
+                  <Typography
+                    key={r.uri}
+                    variant="caption"
+                    noWrap
+                    sx={{ fontSize: 11, color: 'text.secondary' }}
+                    title={`${r.uri} — ${r.description ?? ''}`}
+                  >
+                    📄 {r.name} · {r.uri}
+                  </Typography>
+                ))}
+                {contents.prompts.map((p) => (
+                  <Typography
+                    key={p.name}
+                    variant="caption"
+                    noWrap
+                    sx={{ fontSize: 11, color: 'text.secondary' }}
+                    title={p.description ?? ''}
+                  >
+                    💬 {p.name}
+                    {p.arguments?.length ? ` (${p.arguments.map((a) => a.name).join(', ')})` : ''}
+                  </Typography>
+                ))}
+              </Stack>
+            )}
+          </Box>
         ))
       )}
 

src/components/trace/SessionReplayPlayer.tsx

@@ -0,0 +1,353 @@
+/**
+ * SessionReplayPlayer — 会话回放播放器（v0.8.0 P2-2）
+ *
+ * 基于 TRACE 层的 JSONL 录制文件（session_{id}_*.jsonl，9 种事件）做完整回放：
+ * 文件选择 → 时间轴（iteration_start 定锚点）→ 播放/暂停/步进/速度控制 →
+ * 事件流渲染（思考/正文/工具调用/结果）。
+ *
+ * 数据来源：sessions:listRecordings（列出该会话录制）+ sessions:readRecording
+ * （严格文件名白名单 + 目录边界校验，主进程侧实施）。
+ */
+
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import {
+  Box,
+  Button,
+  Dialog,
+  DialogContent,
+  DialogTitle,
+  IconButton,
+  LinearProgress,
+  Slider,
+  Stack,
+  Typography,
+  Chip,
+  Select,
+  MenuItem,
+  FormControl,
+  InputLabel,
+} from '@mui/material';
+import { Play, Pause, ChevronLeft, ChevronRight, X, Film } from 'lucide-react';
+import { formatDuration, formatFileSize } from '@renderer/lib/formatters';
+import { t } from '@renderer/lib/i18n';
+import '@renderer/lib/i18n-strings';
+
+/** 录制事件（session-recorder TraceEvent 的宽松形态） */
+interface ReplayEvent {
+  seq?: number;
+  ts?: string;
+  event?: string;
+  sessionId?: string;
+  iteration?: number;
+  [key: string]: unknown;
+}
+
+const SPEEDS = [0.5, 1, 2, 4];
+
+export function SessionReplayPlayer({
+  open,
+  onClose,
+  sessionId,
+}: {
+  open: boolean;
+  onClose: () => void;
+  sessionId: string | null;
+}): React.JSX.Element {
+  const [files, setFiles] = useState<Array<{ name: string; size: number; mtime: number }>>([]);
+  const [selected, setSelected] = useState<string>('');
+  const [events, setEvents] = useState<ReplayEvent[]>([]);
+  const [skipped, setSkipped] = useState(0);
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [cursor, setCursor] = useState(0);
+  const [playing, setPlaying] = useState(false);
+  const [speed, setSpeed] = useState(1);
+  const timerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
+
+  // 打开时拉取录制文件列表
+  useEffect(() => {
+    if (!open || !sessionId) return;
+    setSelected('');
+    setEvents([]);
+    setSkipped(0);
+    setCursor(0);
+    setPlaying(false);
+    setError(null);
+    void (async () => {
+      try {
+        const r = await window.metona?.sessions?.listRecordings(sessionId);
+        if (r?.success && r.data) setFiles(r.data);
+        else setError(r?.error ?? t('replay.loadFailed'));
+      } catch (err) {
+        setError((err as Error).message);
+      }
+    })();
+  }, [open, sessionId]);
+
+  const loadFile = useCallback(async (name: string): Promise<void> => {
+    setSelected(name);
+    setEvents([]);
+    setCursor(0);
+    setPlaying(false);
+    setLoading(true);
+    setError(null);
+    try {
+      const r = await window.metona?.sessions?.readRecording(name);
+      if (r?.success && r.data) {
+        setEvents((r.data.events as ReplayEvent[]) ?? []);
+        setSkipped(r.data.skipped ?? 0);
+      } else {
+        setError(r?.error ?? t('replay.loadFailed'));
+      }
+    } catch (err) {
+      setError((err as Error).message);
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  // 播放循环：按 speed 定时推进游标，到尾部自动暂停
+  useEffect(() => {
+    if (!playing || events.length === 0) return;
+    if (cursor >= events.length - 1) {
+      setPlaying(false);
+      return;
+    }
+    timerRef.current = setTimeout(() => {
+      setCursor((c) => Math.min(c + 1, events.length - 1));
+    }, 60 / speed);
+    return () => {
+      if (timerRef.current) clearTimeout(timerRef.current);
+    };
+  }, [playing, cursor, speed, events.length]);
+
+  /** 渲染单条事件为可读行 */
+  const renderEvent = useMemo(() => {
+    return (ev: ReplayEvent): React.JSX.Element => {
+      const type = String(ev.event ?? '');
+      let detail = '';
+      switch (type) {
+        case 'iteration_start':
+          detail = t('replay.event.iterationStart', { iteration: ev.iteration ?? 0 });
+          break;
+        case 'iteration_end':
+          detail = t('replay.event.iterationEnd', {
+            iteration: ev.iteration ?? 0,
+            duration: formatDuration(Number(ev.durationMs ?? 0)),
+          });
+          break;
+        case 'llm_request':
+          detail = `${ev.provider ?? ''}/${ev.model ?? ''}`;
+          break;
+        case 'llm_response':
+          detail = String((ev.contentPreview as string) ?? '');
+          break;
+        case 'tool_call':
+          detail = `${String(ev.tool ?? '')} ${JSON.stringify(ev.args ?? {})}`;
+          break;
+        case 'tool_result':
+          detail = `${String(ev.tool ?? '')} ${ev.success ? '✓' : '✗'} ${formatDuration(
+            Number(ev.durationMs ?? 0),
+          )}${ev.error ? ` — ${String(ev.error).slice(0, 120)}` : ''}`;
+          break;
+        case 'session_end':
+          detail = t('replay.event.sessionEnd', {
+            reason: String(ev.terminationReason ?? ''),
+            iterations: Number(ev.totalIterations ?? 0),
+          });
+          break;
+        default:
+          detail = JSON.stringify(ev).slice(0, 160);
+      }
+      const isTool = type === 'tool_call' || type === 'tool_result';
+      const isThought = type === 'llm_response' || type === 'llm_request';
+      return (
+        <Box
+          key={`${ev.seq ?? ''}_${String(ev.ts ?? '')}_${detail.slice(0, 12)}`}
+          sx={{
+            px: 1.5,
+            py: 0.75,
+            borderBottom: '1px solid',
+            borderColor: 'divider',
+            bgcolor: type === 'iteration_start' ? 'secondary.main' : 'transparent',
+          }}
+        >
+          <Stack direction="row" spacing={1} sx={{ alignItems: 'flex-start' }}>
+            <Chip
+              label={type}
+              size="small"
+              variant="outlined"
+              sx={{ height: 18, fontSize: 9, flexShrink: 0 }}
+              color={isTool ? 'warning' : isThought ? 'primary' : 'default'}
+            />
+            <Typography
+              variant="caption"
+              sx={{ fontFamily: 'monospace', fontSize: 11, wordBreak: 'break-all', flex: 1 }}
+            >
+              {detail || '—'}
+            </Typography>
+            {ev.ts && (
+              <Typography
+                variant="caption"
+                sx={{ color: 'text.disabled', fontSize: 9, flexShrink: 0 }}
+              >
+                {String(ev.ts).slice(11, 19)}
+              </Typography>
+            )}
+          </Stack>
+        </Box>
+      );
+    };
+  }, []);
+
+  return (
+    <Dialog open={open} onClose={onClose} fullWidth maxWidth="md">
+      <DialogTitle sx={{ display: 'flex', alignItems: 'center', gap: 1, fontSize: 14 }}>
+        <Film size={16} /> {t('replay.title')}
+        <IconButton
+          size="small"
+          onClick={onClose}
+          sx={{ ml: 'auto' }}
+          aria-label={t('common.close')}
+        >
+          <X size={16} />
+        </IconButton>
+      </DialogTitle>
+      <DialogContent>
+        <Stack spacing={1.5}>
+          {/* 文件选择 */}
+          <FormControl size="small" fullWidth disabled={files.length === 0}>
+            <InputLabel>{t('replay.file')}</InputLabel>
+            <Select
+              value={selected}
+              label={t('replay.file')}
+              onChange={(e) => void loadFile(String(e.target.value))}
+            >
+              {files.map((f) => (
+                <MenuItem key={f.name} value={f.name}>
+                  {`${f.name} · ${formatFileSize(f.size)}`}
+                </MenuItem>
+              ))}
+            </Select>
+          </FormControl>
+
+          {loading && <LinearProgress />}
+          {error && (
+            <Typography variant="caption" sx={{ color: 'error.main' }}>
+              {error}
+            </Typography>
+          )}
+
+          {events.length > 0 && (
+            <>
+              {/* 时间轴 + 控制 */}
+              <Stack direction="row" spacing={1} sx={{ alignItems: 'center' }}>
+                <IconButton
+                  size="small"
+                  onClick={() => setCursor((c) => Math.max(0, c - 1))}
+                  disabled={cursor === 0}
+                  aria-label={t('replay.stepBack')}
+                >
+                  <ChevronLeft size={16} />
+                </IconButton>
+                <IconButton
+                  size="small"
+                  onClick={() => setPlaying((p) => !p)}
+                  disabled={cursor >= events.length - 1}
+                  aria-label={playing ? t('replay.pause') : t('replay.play')}
+                >
+                  {playing ? <Pause size={16} /> : <Play size={16} />}
+                </IconButton>
+                <IconButton
+                  size="small"
+                  onClick={() => setCursor((c) => Math.min(events.length - 1, c + 1))}
+                  disabled={cursor >= events.length - 1}
+                  aria-label={t('replay.stepForward')}
+                >
+                  <ChevronRight size={16} />
+                </IconButton>
+                <Slider
+                  size="small"
+                  min={0}
+                  max={Math.max(0, events.length - 1)}
+                  value={cursor}
+                  onChange={(_, v) => {
+                    setPlaying(false);
+                    setCursor(Number(v));
+                  }}
+                  sx={{ flex: 1 }}
+                />
+                <FormControl size="small" sx={{ minWidth: 72 }}>
+                  <Select
+                    value={speed}
+                    onChange={(e) => setSpeed(Number(e.target.value))}
+                    aria-label={t('replay.speed')}
+                  >
+                    {SPEEDS.map((s) => (
+                      <MenuItem key={s} value={s}>
+                        {s}×
+                      </MenuItem>
+                    ))}
+                  </Select>
+                </FormControl>
+                <Typography variant="caption" sx={{ color: 'text.disabled', flexShrink: 0 }}>
+                  {cursor + 1}/{events.length}
+                </Typography>
+              </Stack>
+
+              {/* 事件流（只渲染到当前游标，最近 200 条防 DOM 爆炸） */}
+              <Box
+                sx={{
+                  maxHeight: 420,
+                  overflowY: 'auto',
+                  border: '1px solid',
+                  borderColor: 'divider',
+                  borderRadius: 1,
+                  '&::-webkit-scrollbar': { width: 6 },
+                  '&::-webkit-scrollbar-thumb': { bgcolor: 'divider', borderRadius: 3 },
+                }}
+              >
+                {events.slice(Math.max(0, cursor - 199), cursor + 1).map(renderEvent)}
+              </Box>
+              {skipped > 0 && (
+                <Typography variant="caption" sx={{ color: 'text.disabled' }}>
+                  {t('replay.skippedLines', { count: skipped })}
+                </Typography>
+              )}
+            </>
+          )}
+
+          {files.length === 0 && !loading && !error && (
+            <Typography variant="caption" sx={{ color: 'text.secondary' }}>
+              {t('replay.noRecordings')}
+            </Typography>
+          )}
+        </Stack>
+      </DialogContent>
+    </Dialog>
+  );
+}
+
+/** Trace 面板的回放入口按钮 + 播放器挂载 */
+export function SessionReplayButton({
+  sessionId,
+}: {
+  sessionId: string | null;
+}): React.JSX.Element {
+  const [open, setOpen] = useState(false);
+  return (
+    <>
+      <Button
+        size="small"
+        variant="outlined"
+        startIcon={<Film size={12} />}
+        disabled={!sessionId}
+        onClick={() => setOpen(true)}
+        sx={{ fontSize: 11 }}
+      >
+        {t('replay.title')}
+      </Button>
+      <SessionReplayPlayer open={open} onClose={() => setOpen(false)} sessionId={sessionId} />
+    </>
+  );
+}

src/hooks/useAgentStream.ts

@@ -27,6 +27,8 @@ import {
   needsNewAssistantCard,
   findTraceStepIndexForToolCall,
 } from '@renderer/lib/stream-event-pipeline';
+// v0.8.0 P1-1a: 事件总线 —— IPC 与后台会话回放统一入口
+import { subscribeStreamBus, emitStreamBus } from '@renderer/lib/stream-event-bus';
 // v0.7.2 A4: traceSteps 入 store 时即剥离工具结果中的 base64/超长字段
 import { toDisplayResult } from '@renderer/lib/tool-result-display';
 
@@ -119,6 +121,32 @@ export function useAgentStream(): void {
     flushTraceThought();
   }, [flushTextDelta, flushTraceThought]);
 
+  /**
+   * v0.8.0 P1-1d: 清扫流结束后仍处于 executing/pending 的工具调用卡片。
+   * abort 尾巴过滤会把中断后到达的 tool_result 丢弃（设计意图：停止后聊天区
+   * 不得长出内容），副作用是卡片永久转圈。done/error 收尾时统一置 error 态。
+   */
+  const sweepInterruptedToolCalls = useCallback((): void => {
+    const store = useAgentStore.getState();
+    const stamp = t('agent.system.tool_interrupted');
+    const sweep = (tcs?: ToolCallInfo[]): ToolCallInfo[] | undefined =>
+      tcs?.some((tc) => tc.status === 'executing' || tc.status === 'pending')
+        ? tcs.map((tc) =>
+            tc.status === 'executing' || tc.status === 'pending'
+              ? { ...tc, status: 'error' as const, error: stamp }
+              : tc,
+          )
+        : undefined;
+    for (const m of store.messages) {
+      const updated = sweep(m.toolCalls);
+      if (updated) store.updateMessage(m.id, { toolCalls: updated });
+    }
+    for (const step of store.traceSteps) {
+      const updated = sweep(step.toolCalls);
+      if (updated && step.id) store.updateTraceStepById(step.id, { toolCalls: updated });
+    }
+  }, []);
+
   // ===== 流式内容事件 =====
   useEffect(() => {
     if (!window.metona?.agent?.onStreamEvent) return;
@@ -134,7 +162,13 @@ export function useAgentStream(): void {
       if (textRafIdRef.current != null) return;
       textRafIdRef.current = requestAnimationFrame(flushTextDelta);
     };
-    const unsubscribe = window.metona.agent.onStreamEvent((event: unknown) => {
+    // v0.8.0 P1-1a: IPC 监听器只负责把事件投递进总线；处理逻辑订阅总线。
+    // 后台会话回放（agent-store.setCurrentSession）经同一总线灌入缓冲事件，
+    // 与实时事件无缝衔接。
+    const unsubscribeIpc = window.metona.agent.onStreamEvent((event: unknown) => {
+      emitStreamBus('streamEvent', event);
+    });
+    const unsubscribe = subscribeStreamBus('streamEvent', (event: unknown) => {
       const data = event as {
         type?: string;
         requestId?: string;
@@ -170,6 +204,8 @@ export function useAgentStream(): void {
         };
         /** DONE 事件的终止原因（completed / max_iterations / timeout / user_interrupt / dead_loop / error） */
         terminationReason?: string;
+        /** v0.8.0 P0-1: DONE 事件携带的 Provider 原生停止原因（length 触发截断提示） */
+        finishReason?: string;
         error?: { code: string; message: string };
         state?: string;
       };
@@ -529,6 +565,35 @@ export function useAgentStream(): void {
             traceRafIdRef.current = null;
           }
           flushTraceThought();
+          // v0.8.0 P1-1d: 清扫悬空的 executing/pending 工具卡片 —— abort 尾巴
+          // 过滤曾让中断后到达的 tool_result 被丢弃，卡片永久转圈
+          sweepInterruptedToolCalls();
+          // v0.8.0 P0-4: 输出截断 / 空完成可见性（引擎空响应守卫的 UI 侧配合）
+          if (reason === 'completed' && data.finishReason === 'length') {
+            getStore().addMessage({
+              id: genMsgId('system'),
+              role: 'system',
+              content: t('agent.terminated.output_truncated'),
+              timestamp: Date.now(),
+            });
+          } else if (reason === 'completed') {
+            const targetId = currentRunAssistantIdRef.current;
+            const card = targetId ? getStore().messages.find((m) => m.id === targetId) : undefined;
+            if (
+              card &&
+              card.role === 'assistant' &&
+              !card.content &&
+              !card.reasoningContent &&
+              !(card.toolCalls && card.toolCalls.length > 0)
+            ) {
+              getStore().addMessage({
+                id: genMsgId('system'),
+                role: 'system',
+                content: t('agent.system.empty_completed'),
+                timestamp: Date.now(),
+              });
+            }
+          }
           getStore().setStreaming(false);
           getStore().setCurrentRunId(null);
           // 不覆盖 error 状态 — error handler 已设置 agentStatus='error'
@@ -559,23 +624,35 @@ export function useAgentStream(): void {
           getStore().setCurrentRunId(null);
           getStore().setAgentStatus('error');
           getStore().updateLastTraceStep({ completedAt: Date.now() });
+          // v0.8.0 P1-1d: 清扫悬空的 executing/pending 工具卡片
+          sweepInterruptedToolCalls();
           // v0.3.17: 对 content_filtered 错误码显示更友好的提示
+          // v0.8.0 P0-4: output_length_exceeded / invalid_response（空响应重试耗尽）
+          // 映射针对性文案（引擎 P0-2 空响应守卫的结构化错误码）
           const errorCode = data.error?.code;
           const errorMessage = data.error?.message ?? '未知错误';
+          const friendlyContent =
+            errorCode === 'content_filtered'
+              ? t('agent.error.content_filtered', { message: errorMessage })
+              : errorCode === 'output_length_exceeded'
+                ? t('agent.error.output_length_exceeded')
+                : errorCode === 'invalid_response'
+                  ? t('agent.error.empty_response')
+                  : t('agent.error.generic', { message: errorMessage });
           getStore().addMessage({
             id: genMsgId('error'),
             role: 'system',
-            content:
+            content: friendlyContent,
-              errorCode === 'content_filtered'
-                ? t('agent.error.content_filtered', { message: errorMessage })
-                : t('agent.error.generic', { message: errorMessage }),
             timestamp: Date.now(),
           });
           break;
       }
     });
 
-    cleanupRef.current = unsubscribe;
+    cleanupRef.current = () => {
+      unsubscribe();
+      unsubscribeIpc();
+    };
 
     return () => {
       // F5: 组件卸载时清理挂起的 rAF，并 flush 残留 delta（保留已接收内容）
@@ -592,14 +669,18 @@ export function useAgentStream(): void {
       flushTraceThought();
       cleanupRef.current?.();
     };
-  }, [flushTextDelta, flushTraceThought]);
+  }, [flushTextDelta, flushTraceThought, sweepInterruptedToolCalls]);
 
   // ===== 状态变化事件（迭代追踪 + Trace 步骤 + 消息卡片） =====
   useEffect(() => {
     if (!window.metona?.agent?.onStateChange) return;
 
-    const unsubscribe = window.metona.agent.onStateChange((state: unknown) => {
+    // v0.8.0 P1-1a: IPC → 总线，处理逻辑订阅总线（回放复用同一管线）
-      const data = state as {
+    const unsubscribeIpc = window.metona.agent.onStateChange((state: unknown) => {
+      emitStreamBus('stateChange', state);
+    });
+    const unsubscribe = subscribeStreamBus('stateChange', (raw: unknown) => {
+      const data = raw as {
         sessionId?: string;
         iteration?: number;
         state?: string;
@@ -635,6 +716,21 @@ export function useAgentStream(): void {
       if (decision.action === 'reject') return;
       if (decision.adoptRunId) store.setCurrentRunId(decision.adoptRunId);
 
+      // v0.8.0 P1-1b: abort 失败自愈 —— 用户中断后若引擎仍在运行（IPC 失败或
+      // waitForAbort 超时），其后续状态事件持续到达；本地 isStreaming 已被
+      // abort() 置 false，此处按 runId 匹配恢复流式显示，避免"UI 显示 idle
+      // 但引擎静默运行、内容全部被准入层丢弃"。
+      if (
+        !store.isStreaming &&
+        data.runId &&
+        data.runId === store.currentRunId &&
+        ['THINKING', 'PARSING', 'EXECUTING', 'OBSERVING', 'REFLECTING', 'COMPRESSING'].includes(
+          data.state ?? '',
+        )
+      ) {
+        store.setStreaming(true);
+      }
+
       // --- 迭代号更新 + 新消息卡片创建 ---
       if (data.iteration != null && data.iteration !== store.currentIteration) {
         const prevIteration = store.currentIteration;
@@ -757,7 +853,10 @@ export function useAgentStream(): void {
       }
     });
 
-    return () => unsubscribe();
+    return () => {
+      unsubscribe();
+      unsubscribeIpc();
+    };
   }, [flushPendingBuffersBeforeNewIteration]);
 
   // 监听 Provider 切换通知

src/lib/i18n-strings.ts

@@ -21,11 +21,42 @@ registerTranslations('zh-CN', {
   'agent.system.stopped': '⏹ 会话已停止：{{reason}}',
   'agent.error.generic': '错误: {{message}}',
   'agent.error.content_filtered': '⚠️ {{message}}',
+  // v0.8.0 P2-4: @ 文件提及
+  'input.mention.failed': '@{{path}} 读取失败：{{reason}}',
+
+  // ===== v0.8.0 P0-2/P0-4: 流结束契约提示 =====
+  'agent.terminated.output_truncated':
+    '⚠️ 回答可能因输出上限被截断（finish_reason=length）。可在 设置 → LLM 配置 中提高"最大输出上限"，或降低思考强度',
+  'agent.error.output_length_exceeded':
+    '⚠️ 模型的思考内容耗尽了输出 token 预算，未能产出回答（finish_reason=length）。建议：提高"最大输出上限" / 关闭思考模式或降低思考强度 / 更换输出预算更大的模型',
+  'agent.error.empty_response':
+    '⚠️ 模型未返回任何内容（含重试）。可能为上游中断或输出上限截断，请重试或调整输出上限/思考设置',
+  'agent.system.empty_completed': '⚠️ 模型未返回内容。请重试，或检查输出上限与思考模式设置',
+  'agent.system.finalize_missing':
+    '⚠️ 会话已结束但未收到正常收尾事件，已恢复输入（结果以数据库内容为准）',
+  'agent.system.abort_failed': '⚠️ 中断请求失败，Agent 可能仍在运行；已恢复实时显示',
+  'agent.system.replay_truncated': '（提示：后台运行内容较多，仅恢复了最近部分事件）',
+  'agent.system.tool_interrupted': '已中断',
 
   // ===== 通用 =====
   'common.cancel': '取消',
   'common.delete': '删除',
   'common.refresh': '刷新',
+  'common.close': '关闭',
+  // v0.8.0 P2-2: 会话回放
+  'replay.title': '会话回放',
+  'replay.file': '选择录制文件',
+  'replay.play': '播放',
+  'replay.pause': '暂停',
+  'replay.stepBack': '上一步',
+  'replay.stepForward': '下一步',
+  'replay.speed': '播放速度',
+  'replay.loadFailed': '加载录制失败',
+  'replay.noRecordings': '该会话还没有 TRACE 录制文件（logs/session_*.jsonl）',
+  'replay.skippedLines': '{{count}} 行损坏/截断被跳过',
+  'replay.event.iterationStart': '▶ 第 {{iteration}} 轮开始',
+  'replay.event.iterationEnd': '■ 第 {{iteration}} 轮结束（{{duration}}）',
+  'replay.event.sessionEnd': '会话结束：{{reason}}（{{iterations}} 轮）',
 
   // ===== 工具确认弹框（ConfirmationDialog）=====
   'confirm.title': '工具执行确认',
@@ -68,6 +99,12 @@ registerTranslations('zh-CN', {
   'sidebar.noMatch': '无匹配结果',
   'sidebar.empty': '暂无会话',
   'sidebar.archived': '已归档',
+  // v0.8.0 P2-1: 回收站
+  'sidebar.trash': '回收站（30 天后自动清理）',
+  'sidebar.trash.empty': '回收站为空',
+  'sidebar.trash.purge': '彻底删除',
+  'sidebar.trash.purgeTitle': '彻底删除会话？',
+  'sidebar.trash.purgeBody': '「{{title}}」及其全部消息将被永久删除，此操作不可恢复。',
   'sidebar.count': '{{count}} 个',
   'sidebar.restore': '恢复',
   'sidebar.deleteTitle': '删除会话',
@@ -159,6 +196,13 @@ registerTranslations('zh-CN', {
   'llm.ctxWindow.mimoHelper': '默认 1000000（1M），用于上下文压缩判断',
   'llm.ctxWindow.oaHelper': 'gpt-4o 默认 128K，gpt-4.1 默认 1M',
   'llm.ctxWindow.anthropicHelper': 'Claude 默认 200K',
+  // v0.8.0 FEAT-1: 最大输出上限（llm.maxTokens，按请求传给 API）
+  'llm.maxTokens.label': '最大输出上限 (tokens)',
+  'llm.maxTokens.helper': '单次回复（含思考内容）的最大 token 数；思考会占用此预算',
+  'llm.maxTokens.minError': '最小值为 256',
+  'llm.maxTokens.exceedCap': '当前模型输出上限为 {{cap}}，保存后将按模型上限生效（配置值被钳制）',
+  'llm.maxTokens.capInfo': '当前模型输出上限：{{cap}} tokens',
+  'llm.thinking.unsupported': '当前模型不支持思考模式：请求将自动关闭思考（避免思考耗尽输出预算）',
   'llm.pull.title': '下载 Ollama 模型',
   'llm.pull.placeholder': '模型名，如 qwen3:8b',
   'llm.pull.download': '下载',
@@ -397,6 +441,17 @@ registerTranslations('zh-CN', {
   'settings.logs.data.memories': '所有记忆',
   'settings.logs.data.auditLogs': '审计日志',
   'settings.logs.traceFilesTitle': '会话录制文件（TRACE JSONL）',
+  // v0.8.0 P2-3: 检查更新 / 下载安装
+  'settings.logs.update.title': '应用更新',
+  'settings.logs.update.check': '检查更新',
+  'settings.logs.update.checking': '检查中…',
+  'settings.logs.update.downloadInstall': '下载并安装',
+  'settings.logs.update.installing': '准备安装…',
+  'settings.logs.update.available': '新版本 {{version}} 可用，点击"下载并安装"升级',
+  'settings.logs.update.upToDate': '已是最新版本（{{version}}）',
+  'settings.logs.update.disabled': '未配置更新源（app.updateFeedUrl）',
+  'settings.logs.update.error': '更新失败：{{message}}',
+  'settings.logs.update.downloaded': '下载完成，即将重启安装…',
   'settings.logs.traceStats':
     '{{count}} 个文件 · 共 {{size}}（保留策略：最近 200 个，启动时自动清理）',
   'settings.logs.statsLoading': '统计中...',
@@ -442,6 +497,10 @@ registerTranslations('zh-CN', {
   'settings.mcp.addFailed': '添加 MCP 服务失败',
   'settings.mcp.addFailedMsg': '添加 MCP 服务失败：{{message}}',
   'settings.mcp.removeFailed': '移除失败',
+  // v0.8.0 P2-5: MCP Resources / Prompts 发现
+  'settings.mcp.contents.show': '查看资源与提示词',
+  'settings.mcp.contents.hide': '收起资源与提示词',
+  'settings.mcp.contents.empty': '该 Server 未声明 Resources / Prompts 能力',
   'settings.mcp.removeFailedMsg': '移除失败：{{message}}',
   'settings.mcp.toggleFailed': '操作失败',
   'settings.mcp.toggleFailedMsg': '操作失败：{{message}}',
@@ -666,10 +725,44 @@ registerTranslations('en-US', {
   'agent.system.stopped': '⏹ Session stopped: {{reason}}',
   'agent.error.generic': 'Error: {{message}}',
   'agent.error.content_filtered': '⚠️ {{message}}',
+  // v0.8.0 P2-4: @ file mention
+  'input.mention.failed': '@{{path}} read failed: {{reason}}',
+
+  // ===== v0.8.0 P0-2/P0-4: stream-end contract notices =====
+  'agent.terminated.output_truncated':
+    '⚠️ The answer may have been truncated by the output token limit (finish_reason=length). Raise "Max Output Tokens" in Settings → LLM, or lower thinking effort',
+  'agent.error.output_length_exceeded':
+    '⚠️ The model consumed its entire output token budget on reasoning and produced no answer (finish_reason=length). Try: raise "Max Output Tokens" / disable or lower thinking / switch to a model with a larger output budget',
+  'agent.error.empty_response':
+    '⚠️ The model returned no content (after retries). This may be an upstream drop or output-limit cutoff — retry, or adjust output limit / thinking settings',
+  'agent.system.empty_completed':
+    '⚠️ The model returned no content. Please retry, or check the output limit / thinking settings',
+  'agent.system.finalize_missing':
+    '⚠️ The run ended without a normal completion event — input restored (results reflect the database)',
+  'agent.system.abort_failed':
+    '⚠️ Abort request failed — the agent may still be running; live display restored',
+  'agent.system.replay_truncated':
+    ' (Note: many events occurred in the background; only the most recent were restored)',
+  'agent.system.tool_interrupted': 'Interrupted',
 
   'common.cancel': 'Cancel',
   'common.delete': 'Delete',
   'common.refresh': 'Refresh',
+  'common.close': 'Close',
+  // v0.8.0 P2-2: Session replay
+  'replay.title': 'Session replay',
+  'replay.file': 'Select recording',
+  'replay.play': 'Play',
+  'replay.pause': 'Pause',
+  'replay.stepBack': 'Step back',
+  'replay.stepForward': 'Step forward',
+  'replay.speed': 'Playback speed',
+  'replay.loadFailed': 'Failed to load recording',
+  'replay.noRecordings': 'No TRACE recordings for this session yet (logs/session_*.jsonl)',
+  'replay.skippedLines': '{{count}} corrupt/truncated line(s) skipped',
+  'replay.event.iterationStart': '▶ Iteration {{iteration}} start',
+  'replay.event.iterationEnd': '■ Iteration {{iteration}} end ({{duration}})',
+  'replay.event.sessionEnd': 'Session ended: {{reason}} ({{iterations}} iterations)',
 
   'confirm.title': 'Tool Execution Confirmation',
   'confirm.parallelSuffix': ' ({{count}} parallel requests)',
@@ -712,6 +805,13 @@ registerTranslations('en-US', {
   'sidebar.noMatch': 'No matches',
   'sidebar.empty': 'No sessions yet',
   'sidebar.archived': 'Archived',
+  // v0.8.0 P2-1: Trash
+  'sidebar.trash': 'Trash (auto-purged after 30 days)',
+  'sidebar.trash.empty': 'Trash is empty',
+  'sidebar.trash.purge': 'Delete forever',
+  'sidebar.trash.purgeTitle': 'Delete session forever?',
+  'sidebar.trash.purgeBody':
+    '"{{title}}" and all of its messages will be permanently deleted. This cannot be undone.',
   'sidebar.count': '{{count}}',
   'sidebar.restore': 'Restore',
   'sidebar.deleteTitle': 'Delete Session',
@@ -806,6 +906,16 @@ registerTranslations('en-US', {
   'llm.ctxWindow.mimoHelper': 'Default 1000000 (1M), used for compression decisions',
   'llm.ctxWindow.oaHelper': 'gpt-4o defaults to 128K, gpt-4.1 to 1M',
   'llm.ctxWindow.anthropicHelper': 'Claude defaults to 200K',
+  // v0.8.0 FEAT-1: max output tokens (llm.maxTokens, sent per request)
+  'llm.maxTokens.label': 'Max output tokens',
+  'llm.maxTokens.helper':
+    'Maximum tokens per response (reasoning included); thinking consumes this budget',
+  'llm.maxTokens.minError': 'Minimum is 256',
+  'llm.maxTokens.exceedCap':
+    'This model caps output at {{cap}} — the saved value will be clamped to the model limit',
+  'llm.maxTokens.capInfo': 'Model output cap: {{cap}} tokens',
+  'llm.thinking.unsupported':
+    'This model does not support thinking: requests will disable thinking automatically (to avoid burning the output budget on reasoning)',
   'llm.pull.title': 'Download Ollama model',
   'llm.pull.placeholder': 'Model name, e.g. qwen3:8b',
   'llm.pull.download': 'Download',
@@ -1048,6 +1158,18 @@ registerTranslations('en-US', {
   'settings.logs.data.memories': 'all memories',
   'settings.logs.data.auditLogs': 'audit logs',
   'settings.logs.traceFilesTitle': 'Session recording files (TRACE JSONL)',
+  // v0.8.0 P2-3: App update
+  'settings.logs.update.title': 'App update',
+  'settings.logs.update.check': 'Check for updates',
+  'settings.logs.update.checking': 'Checking…',
+  'settings.logs.update.downloadInstall': 'Download & install',
+  'settings.logs.update.installing': 'Preparing to install…',
+  'settings.logs.update.available':
+    'Version {{version}} is available — click "Download & install" to upgrade',
+  'settings.logs.update.upToDate': 'Up to date ({{version}})',
+  'settings.logs.update.disabled': 'No update feed configured (app.updateFeedUrl)',
+  'settings.logs.update.error': 'Update failed: {{message}}',
+  'settings.logs.update.downloaded': 'Download complete — restarting to install…',
   'settings.logs.traceStats':
     '{{count}} file(s) · {{size}} total (retention: last 200, auto-cleaned on startup)',
   'settings.logs.statsLoading': 'Computing...',
@@ -1093,6 +1215,10 @@ registerTranslations('en-US', {
   'settings.mcp.addFailed': 'Failed to add MCP server',
   'settings.mcp.addFailedMsg': 'Failed to add MCP server: {{message}}',
   'settings.mcp.removeFailed': 'Remove failed',
+  // v0.8.0 P2-5: MCP discovery
+  'settings.mcp.contents.show': 'Show resources & prompts',
+  'settings.mcp.contents.hide': 'Hide resources & prompts',
+  'settings.mcp.contents.empty': 'This server does not declare Resources / Prompts capabilities',
   'settings.mcp.removeFailedMsg': 'Remove failed: {{message}}',
   'settings.mcp.toggleFailed': 'Operation failed',
   'settings.mcp.toggleFailedMsg': 'Operation failed: {{message}}',

src/lib/model-capabilities.ts

@@ -60,3 +60,34 @@ export function supportsImageUpload(input: ImageUploadGateInput): ImageUploadGat
 
   return { allowed: true };
 }
+
+// ===== v0.8.0 FEAT-1: Provider 输出上限参数支持矩阵 =====
+
+/**
+ * 各 Provider 是否支持"最大输出上限"请求参数（LLM 设置页「最大输出上限」
+ * 配置项的可见性门控 —— 仅支持的 Provider 显示该配置）。
+ *
+ * 数据来源（各厂商 API 文档 + adapter 实现）：
+ * - deepseek:   max_tokens（上限按模型钳制，384K / vision 8192）
+ * - agnes:      max_tokens（上限 65.5K）
+ * - mimo:       max_completion_tokens（上限 131072 / 32768，含推理 token）
+ * - openai:     max_tokens（chat 系列）/ max_completion_tokens（o 系列）
+ * - anthropic:  max_tokens（必填参数）
+ * - ollama:     options.num_predict
+ *
+ * 六家当前均支持；此表为唯一数据驱动点，未来接入不支持的 Provider 时
+ * 置 false 即可自动隐藏配置项（无需改 UI 代码）。
+ */
+export const PROVIDER_OUTPUT_LIMIT_SUPPORT: Record<string, boolean> = {
+  deepseek: true,
+  agnes: true,
+  mimo: true,
+  openai: true,
+  anthropic: true,
+  ollama: true,
+};
+
+/** 查询当前 Provider 是否支持输出上限配置（未知 Provider 保守返回 false → 隐藏） */
+export function supportsOutputLimitConfig(provider: string): boolean {
+  return PROVIDER_OUTPUT_LIMIT_SUPPORT[provider] === true;
+}

src/lib/stream-event-bus.ts

@@ -0,0 +1,46 @@
+/**
+ * Stream Event Bus — 渲染层流式事件总线（v0.8.0 P1-1a）
+ *
+ * 背景：useAgentStream 的事件消费逻辑此前只与 IPC 直连（window.metona.agent.
+ * onStreamEvent / onStateChange）—— 会话切换期间同 run 的后续事件被准入层
+ * 拒绝（non-streaming-content / terminal-without-run），引擎跑完但 UI 永不
+ * 更新（"回复到一半消失"）。
+ *
+ * 现契约：IPC 监听器与「后台会话回放」统一经本总线分发到 useAgentStream 的
+ * 处理函数 —— 切回运行中会话时，agent:getReplayState 返回的缓冲事件按序
+ * emit 进总线，与实时事件无缝衔接。
+ *
+ * 契约：零业务逻辑的极简 pub-sub；每通道单消费者（useAgentStream 在 App 根
+ * 挂载一次），重复订阅由调用方保证先退订。
+ */
+
+export type StreamEventChannel = 'streamEvent' | 'stateChange';
+
+type Listener = (payload: unknown) => void;
+
+const listeners = new Map<StreamEventChannel, Set<Listener>>();
+
+export function subscribeStreamBus(channel: StreamEventChannel, fn: Listener): () => void {
+  let set = listeners.get(channel);
+  if (!set) {
+    set = new Set();
+    listeners.set(channel, set);
+  }
+  set.add(fn);
+  return () => {
+    set?.delete(fn);
+  };
+}
+
+export function emitStreamBus(channel: StreamEventChannel, payload: unknown): void {
+  const set = listeners.get(channel);
+  if (!set) return;
+  for (const fn of set) {
+    try {
+      fn(payload);
+    } catch (err) {
+      // 单个消费者异常不阻断其他消费者（当前单消费者，防御性）
+      console.error('[stream-event-bus] listener error:', err);
+    }
+  }
+}

src/stores/agent-store.ts

@@ -11,6 +11,11 @@ import { useSessionStore } from './session-store';
 import { toDisplayResult } from '../lib/tool-result-display';
 // v0.7.3 P3-3: Trace 生命周期 —— metadata 只保留最近 N 个 run 的步骤
 import { keepRecentRuns } from '../lib/trace-lifecycle';
+// v0.8.0 P1-1a: 后台会话回放经事件总线灌入 useAgentStream 管线
+import { emitStreamBus } from '../lib/stream-event-bus';
+// v0.8.0 P1-1b/c: 文案出层
+import { t } from '../lib/i18n';
+import '../lib/i18n-strings';
 
 // L-1: 消息 ID 防碰撞计数器
 let _msgIdCounter = 0;
@@ -380,6 +385,46 @@ export const useAgentStore = create<AgentState>((set, get) => ({
           console.error('[AgentStore]', err);
         });
     }
+
+    // v0.8.0 P1-1a: 后台会话运行内容恢复 —— 该会话正在后台运行（或刚结束但
+    // 缓冲未清）时，拉取主进程回放缓冲并按序灌入事件总线，重建消息/Trace 状态；
+    // 实时事件随后经同一总线无缝衔接（runId 对齐由缓冲记录提供）。
+    if (id && window.metona?.agent?.getReplayState) {
+      window.metona.agent
+        .getReplayState(id)
+        .then((r) => {
+          // 竞态保护：用户已切走则丢弃
+          if (get().currentSessionId !== id) return;
+          if (!r?.success || !r.data || r.data.events.length === 0) return;
+          const { events, truncated, runId, isRunning } = r.data;
+          // 恢复流式态与 run 归属：回放的内容事件需要 isStreaming=true 才能通过
+          // 准入层（non-streaming-content 过滤）；终止事件（done/error）会正常
+          // 收尾并把 isStreaming 复位为 false。
+          if (runId) {
+            set({ currentRunId: runId, isStreaming: true });
+          }
+          for (const ev of events) {
+            emitStreamBus(ev.channel, ev.payload);
+          }
+          if (truncated) {
+            get().addMessage({
+              id: genMsgId('system'),
+              role: 'system',
+              content: t('agent.system.replay_truncated'),
+              timestamp: Date.now(),
+            });
+          }
+          // 已运行中的会话：回放后实时事件继续；stateChange THINKING 自愈
+          //（P1-1b）会在流式态意外复位时恢复。此处对 isRunning 会话兜底确保
+          // isStreaming 不为 false（done 未到达时 bus 回放不会复位它）。
+          if (isRunning && runId && !get().isStreaming) {
+            set({ isStreaming: true });
+          }
+        })
+        .catch((err) => {
+          console.error('[AgentStore] getReplayState failed:', err);
+        });
+    }
   },
 
   setMessages: (messages) => set({ messages }),
@@ -544,7 +589,40 @@ export const useAgentStore = create<AgentState>((set, get) => ({
         content: llmContent,
         images: llmImages.length > 0 ? llmImages : undefined,
       };
-      window.metona.agent.sendMessage(messageWithImages, sessionId).catch((err) => {
+      window.metona.agent.sendMessage(messageWithImages, sessionId).then(
+        (r) => {
+          // v0.8.0 P1-1c: 收尾兜底 —— agent:sendMessage 的 invoke 在整个 run 结束后
+          // 才 resolve。resolve 时若本地仍处于流式态，说明 DONE/ERROR 收尾事件
+          // 未到达（事件投递异常/主进程异常收尾），渲染层将永久卡在流式状态。
+          const st = get();
+          if (st.currentSessionId !== sessionId || !st.isStreaming) return;
+          if (r && r.success === false) {
+            // 主进程显式失败（注入拦截/防重入/adapter 加载失败等）——通常已广播
+            // ERROR 事件；若事件未达，本地以返回的 error 消息兜底收尾
+            set({ agentStatus: 'error', isStreaming: false, currentRunId: null });
+            get().addMessage({
+              id: genMsgId('error'),
+              role: 'system',
+              content: t('agent.error.generic', { message: r.error ?? '消息发送失败' }),
+              timestamp: Date.now(),
+            });
+            return;
+          }
+          // 成功 resolve：给事件投递留 2s 宽限，仍卡流式则强制收尾
+          setTimeout(() => {
+            const s2 = get();
+            if (s2.currentSessionId !== sessionId || !s2.isStreaming) return;
+            set({ agentStatus: 'idle', isStreaming: false, currentRunId: null });
+            s2.addMessage({
+              id: genMsgId('system'),
+              role: 'system',
+              content: t('agent.system.finalize_missing'),
+              timestamp: Date.now(),
+            });
+            s2.saveTraceData();
+          }, 2_000);
+        },
+        (err) => {
           console.error('[AgentStore]', 'IPC sendMessage failed:', err);
           set({ agentStatus: 'error', isStreaming: false });
           get().addMessage({
@@ -557,7 +635,8 @@ export const useAgentStore = create<AgentState>((set, get) => ({
           import('@metona-team/metona-toast')
             .then((mod) => mod.default.error(`消息发送失败：${(err as Error).message}`))
             .catch(() => {});
-      });
+        },
+      );
     }
   },
 
@@ -810,11 +889,23 @@ export const useAgentStore = create<AgentState>((set, get) => ({
     // 不清除 currentRunId — 保留用于过滤旧 run 的延迟终止事件（DONE/TERMINATED）
     // 旧 run 的 DONE 到达时会匹配 currentRunId，处理后清除；新 run 的 INIT 会覆盖
     set({ agentStatus: 'idle', isStreaming: false });
-    // v0.7.2 P3-11: 立即熄灭运行指示点；若中断未生效，后续 THINKING 状态事件会重新点亮（自愈）
+    // v0.7.2 P3-11: 立即熄灭运行指示点。
+    // v0.8.0 P1-1b 修正注释与实现：此前注释称"中断未生效时 THINKING 事件会重新
+    // 点亮（自愈）"，但 isStreaming=false 下内容事件仍被准入层丢弃。现两层自愈：
+    // ① 本处 IPC 失败 → 回滚本地状态并恢复运行指示（下方 catch）；
+    // ② IPC 成功但引擎未真正停止 → useAgentStream 的 stateChange THINKING
+    //   自愈（runId 匹配时恢复 isStreaming=true）。
     if (sessionId) get().updateSessionRunState(sessionId, null);
     if (sessionId && window.metona?.agent?.abortSession) {
       window.metona.agent.abortSession(sessionId).catch((err) => {
         console.error('[AgentStore]', err);
+        // v0.8.0 P1-1b: 中断请求失败 —— 引擎很可能仍在运行，回滚本地状态
+        // 并恢复运行指示与实时显示（内容事件不再被准入层丢弃）
+        set({ agentStatus: 'thinking', isStreaming: true });
+        if (sessionId) get().updateSessionRunState(sessionId, 'thinking');
+        import('@metona-team/metona-toast')
+          .then((mod) => mod.default.warning(t('agent.system.abort_failed')))
+          .catch(() => {});
       });
     }
   },

src/types/global.d.ts

@@ -53,6 +53,10 @@ interface MetonaStreamEventData {
     retryable?: boolean;
   };
   state?: string;
+  /** v0.8.0 P0-1: DONE 事件携带的 Provider 原生停止原因（stop/length/tool_calls/content_filter） */
+  finishReason?: string;
+  /** v0.8.0 P1-1a: DONE 事件终止原因（useAgentStream 消费；与 terminationReason 字段对齐） */
+  terminationReason?: string;
 }
 
 /** v0.5.0: SubAgent 生命周期事件（AgentMonitor 的 SubAgent 状态区展示） */
@@ -69,7 +73,10 @@ interface MetonaSubAgentEvent {
 
 interface MetonaAgentAPI {
   /** 发送 MetonaMessage（IR 类型）+ sessionId 到主进程 */
-  sendMessage: (message: MetonaMessageInput, sessionId: string) => Promise<{ success: boolean }>;
+  sendMessage: (
+    message: MetonaMessageInput,
+    sessionId: string,
+  ) => Promise<{ success: boolean; error?: string }>;
   onStreamEvent: (callback: (event: MetonaStreamEventData) => void) => () => void;
   onStateChange: (
     callback: (state: {
@@ -81,6 +88,20 @@ interface MetonaAgentAPI {
     }) => void,
   ) => () => void;
   abortSession: (sessionId: string) => Promise<{ success: boolean }>;
+  /**
+   * v0.8.0 P1-1a: 拉取后台会话的流式回放缓冲（切回运行中会话时恢复内容）。
+   * events 为按序保存的 { channel: 'streamEvent'|'stateChange', payload } 条目。
+   */
+  getReplayState: (sessionId: string) => Promise<{
+    success: boolean;
+    error?: string;
+    data?: {
+      isRunning: boolean;
+      runId: string | null;
+      truncated: boolean;
+      events: Array<{ channel: 'streamEvent' | 'stateChange'; payload: unknown; ts: number }>;
+    };
+  }>;
   onProviderSwitched: (
     callback: (data: { from?: string; to?: string; reason?: string }) => void,
   ) => () => void;
@@ -142,6 +163,32 @@ interface MetonaSessionsAPI {
     messageId: string,
     inclusive?: boolean,
   ) => Promise<{ success: boolean; truncated?: number; error?: string }>;
+  // ===== v0.8.0 P2-1: 回收站（软删除 30 天保留） =====
+  listTrash: () => Promise<
+    Array<{
+      id: string;
+      title: string;
+      createdAt: number;
+      updatedAt: number;
+      messageCount: number;
+      totalTokens: number;
+      pinned: boolean;
+      archived: boolean;
+    }>
+  >;
+  restore: (sessionId: string) => Promise<{ success: boolean; error?: string }>;
+  purge: (sessionId: string) => Promise<{ success: boolean; error?: string }>;
+  // ===== v0.8.0 P2-2: 会话回放 =====
+  listRecordings: (sessionId: string) => Promise<{
+    success: boolean;
+    error?: string;
+    data?: Array<{ name: string; size: number; mtime: number }>;
+  }>;
+  readRecording: (name: string) => Promise<{
+    success: boolean;
+    error?: string;
+    data?: { name: string; events: Array<Record<string, unknown>>; skipped: number };
+  }>;
   /** v0.5.0: 全文搜索会话内容（FTS5，跨会话，按会话聚合） */
   searchContent: (query: string) => Promise<{
     success: boolean;
@@ -192,6 +239,19 @@ interface MetonaMCPAPI {
   addServer: (config: MetonaMCPServerConfig) => Promise<{ success: boolean; error?: string }>;
   removeServer: (name: string) => Promise<{ success: boolean; error?: string }>;
   toggleServer: (name: string, enabled: boolean) => Promise<{ success: boolean; error?: string }>;
+  // v0.8.0 P2-5: Resources / Prompts 发现
+  listServerContents: (name: string) => Promise<{
+    success: boolean;
+    error?: string;
+    data?: {
+      resources: Array<{ uri: string; name: string; description?: string; mimeType?: string }>;
+      prompts: Array<{
+        name: string;
+        description?: string;
+        arguments?: Array<{ name: string; description?: string; required?: boolean }>;
+      }>;
+    };
+  }>;
 }
 
 // ===== Memory API =====
@@ -252,6 +312,16 @@ interface MetonaAppAPI {
     | { status: 'up-to-date'; latestVersion: string }
     | { status: 'available'; latestVersion: string; downloadUrl?: string; notes?: string }
   >;
+  // ===== v0.8.0 P2-3: electron-updater 自动更新 =====
+  updateInstall: () => Promise<{ success: boolean; error?: string }>;
+  onUpdateStatus: (
+    callback: (event: {
+      status: 'checking' | 'available' | 'not-available' | 'downloading' | 'downloaded' | 'error';
+      latestVersion?: string;
+      percent?: number;
+      message?: string;
+    }) => void,
+  ) => () => void;
   /** v0.7.3 P3-4: 健康快照（SLO 指标 + 最近健康检查报告） */
   getHealthSnapshot: () => Promise<{
     success: boolean;
@@ -355,6 +425,19 @@ interface MetonaWorkspaceAPI {
     detail?: string;
     error?: string;
   }>;
+  // v0.8.0 P2-4: @ 文件提及
+  listFiles: (limit?: number) => Promise<{ success: boolean; error?: string; data?: string[] }>;
+  readFileClip: (
+    relPath: string,
+    maxBytes?: number,
+  ) => Promise<{
+    success: boolean;
+    error?: string;
+    name?: string;
+    content?: string;
+    truncated?: boolean;
+    size?: number;
+  }>;
 }
 
 // ===== LLM 运行时查询 API =====