From 457bb900fb7e261b05b3c154b9ddc5da3c40e98b Mon Sep 17 00:00:00 2001
From: qing <1776177662@qq.com>
Date: Wed, 19 Aug 2026 07:01:13 +0800
Subject: [PATCH] fix(aibox): round-5 audit batch K - max_turns clamp, task
 input validation, XSS hardening, atomic writes, broadcast timeout
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Content-Transfer-Encoding: 8bit

第五轮审计（J1~J16）全量修复 + 子代理 max_turns 钳制：
- 子代理 max_turns 钳制（0/None 回退默认 10，负数钳制 1）+ 14 项回归测试
- J1 任务系统投毒：add_memo 入库校验（时间/间隔/类型）、调度器预检与触发事务
  防御、展示路径兜底、register 移入 try、add_user_task 补 repeat_end_time 透传
- J2/J13 前端 XSS：三页面 marked 输出经 DOMPurify 净化、entry1 系统消息/任务
  分隔条改 textContent、CDN 脚本补 SRI
- J3 FTS 删除换序（先 fts 后内容表，索引不再残留）
- J5 原子写推广：新增 common/atomic.py（mkstemp+fsync+os.replace），config/prompt/
  history 全部接入；损坏配置备份后回退
- J6 单例初始化加锁（PromptManager/ConfigManager 并发首例不双重加载）
- J7 broadcast 并发发送 + wait_for 超时回收僵死连接
- J4/J8/J9~J12/J14~J16：验证异常脱敏、交互输入容错、MemoDatabase WAL+busy_timeout、
  memo 批量删除、/new 竞态、skills 引号转义、voice_client 清理、死代码移除、
  skill_manager 同名键/help 截断
---
 aibox/SKILLS_FORMAT.md                   |  11 +
 aibox/aibox.py                           | 122 +++--
 aibox/common/atomic.py                   |  32 ++
 aibox/common/config.py                   |  43 +-
 aibox/entry.html                         |  21 +-
 aibox/entry1.html                        |  37 +-
 aibox/frontend.html                      |  19 +-
 aibox/model_config.py                    |  11 +-
 aibox/skills/nmapskills.py               |   5 +-
 aibox/skills/screenshot.py               |   8 +-
 aibox/subsystems/conversation_history.py |   9 +-
 aibox/subsystems/db.py                   | 131 ++++--
 aibox/subsystems/executors.py            |   2 +
 aibox/subsystems/prompt_manager.py       |  21 +-
 aibox/subsystems/skill_manager.py        |  27 +-
 aibox/tests/test_h_fixes.py              |   9 +-
 aibox/tests/test_i_fixes.py              |  12 +-
 aibox/tests/test_k_fixes.py              | 540 +++++++++++++++++++++++
 aibox/tests/test_model_config.py         |   4 +-
 aibox/tests/test_subagent_max_turns.py   | 178 ++++++++
 aibox/tools/db_tools.py                  |  13 +-
 aibox/voice_client.py                    |  18 +-
 22 files changed, 1147 insertions(+), 126 deletions(-)
 create mode 100644 aibox/common/atomic.py
 create mode 100644 aibox/tests/test_k_fixes.py
 create mode 100644 aibox/tests/test_subagent_max_turns.py

diff --git a/aibox/SKILLS_FORMAT.md b/aibox/SKILLS_FORMAT.md
index 3eb1732..9625406 100644
--- a/aibox/SKILLS_FORMAT.md
+++ b/aibox/SKILLS_FORMAT.md
@@ -227,3 +227,14 @@ except ImportError:
 ```
 
 **`--help` 要完备**。包含参数说明和使用示例两部分。AI 通过阅读 `--help` 输出学会如何调用技能，信息越完整，AI 调用越准确。
+
+---
+
+## 安全边界（J12，审计 2026-08-19）
+
+**技能即可信代码**。可执行技能由 AI（可被网页内容/用户消息诱导）以子进程方式运行，参数为不可信输入：
+
+- **参数必须经 shell 引号转义**：凡技能内部把参数拼进 shell 命令/脚本串（subprocess shell、PowerShell、python-nmap 等内部拼串库），一律先 `shlex.quote`（POSIX）或对应语言转义（PowerShell 单引号翻倍）
+- **禁止把凭据嵌入命令行参数**：命令行参数对同机进程可见（`ps`）；密码/令牌应经环境变量或配置文件传递
+- **ssh/sftp 类技能**：`AutoAddPolicy` 信任任意主机密钥存在 MITM 风险，仅限可信网络使用；生产环境改用 `known_hosts` 校验
+- 内置技能示例（`skills/`）已按此规范处理；新增技能请遵守同一条例
diff --git a/aibox/aibox.py b/aibox/aibox.py
index 98be13d..30f2742 100644
--- a/aibox/aibox.py
+++ b/aibox/aibox.py
@@ -178,13 +178,20 @@ class TaskScheduler:
             for memo in pending:
                 try:
                     # 广播任务开始执行
-                    if self.ws_handler:
+                    if self.ws_handler and self.broadcast_enabled:
                         await self.ws_handler.broadcast_task_status(memo, "executing", i18n.get('task_executing', memo['title'], memo['id']))
                     
                     # 【关键修复】执行前最后一次验证
+                    # J1（审计 2026-08-19）：格式异常按到期执行（Q5 语义），
+                    # 不再抛 ValueError 致任务既不触发也不完成、每秒重试热循环
                     if memo.get('reminder_time'):
-                        reminder_time = datetime.strptime(memo['reminder_time'], constants.DATETIME_FORMAT)
-                        if reminder_time > now:
+                        try:
+                            reminder_time = datetime.strptime(memo['reminder_time'], constants.DATETIME_FORMAT)
+                        except (ValueError, TypeError) as e:
+                            self.logger.warning(
+                                f"任务 #{memo['id']} 提醒时间格式异常，按到期执行: {e}")
+                            reminder_time = None
+                        if reminder_time is not None and reminder_time > now:
                             self.logger.warning(f"任务 #{memo['id']} 的提醒时间 ({memo['reminder_time']}) 大于当前时间 ({now_str})，跳过执行")
                             continue
                     
@@ -196,7 +203,7 @@ class TaskScheduler:
                     result = await self.execute_task_as_conversation(memo, memo_db)
                     
                     # 广播任务完成
-                    if self.ws_handler:
+                    if self.ws_handler and self.broadcast_enabled:
                         await self.ws_handler.broadcast_task_status(memo, "complete", result)
                     
                     executed_tasks.append({
@@ -211,7 +218,7 @@ class TaskScheduler:
                     self.logger.error(i18n.get('task_failed', memo['title'], str(e)))
                     
                     # 广播任务失败
-                    if self.ws_handler:
+                    if self.ws_handler and self.broadcast_enabled:
                         await self.ws_handler.broadcast_task_status(memo, "failed", str(e))
                     
                     executed_tasks.append({
@@ -285,17 +292,11 @@ class TaskScheduler:
             # 获取当前事件循环
             loop = asyncio.get_running_loop()
             
-            # 创建一个队列来收集完整的响应
-            full_response_queue = queue.Queue()
-            
-            # 定义输出回调函数 - 直接广播，同时收集
+            # 定义输出回调函数 - 直接广播
             def output_callback(msg_type, content):
-                """AI输出的回调函数 - 直接广播，同时收集"""
-                # 收集完整响应
-                if msg_type == "complete":
-                    full_response_queue.put(content)
-                
-                # 直接广播给所有客户端 - 必须带上 task_id 和 execution_id
+                """AI输出的回调函数 - 直接广播"""
+                # J15（审计 2026-08-19）：full_response_queue 收集后从未被消费，
+                # 属死代码，已移除；广播路径保留
                 if self.ws_handler and self.broadcast_enabled:
                     # 使用 run_coroutine_threadsafe 在正确的循环中运行异步函数
                     asyncio.run_coroutine_threadsafe(
@@ -420,7 +421,7 @@ class TaskScheduler:
             executed_tasks = []
             for memo in immediate:
                 try:
-                    if self.ws_handler:
+                    if self.ws_handler and self.broadcast_enabled:
                         await self.ws_handler.broadcast_task_status(memo, "executing", i18n.get('immediate_memo_executing', memo['title']))
                     
                     self.logger.info(f"标记即时任务 #{memo['id']} 为已触发")
@@ -428,7 +429,7 @@ class TaskScheduler:
                     
                     result = await self.execute_task_as_conversation(memo, memo_db)
                     
-                    if self.ws_handler:
+                    if self.ws_handler and self.broadcast_enabled:
                         await self.ws_handler.broadcast_task_status(memo, "complete", result)
                     
                     executed_tasks.append({
@@ -442,7 +443,7 @@ class TaskScheduler:
                 except Exception as e:
                     self.logger.error(i18n.get('task_failed', memo['title'], str(e)))
                     
-                    if self.ws_handler:
+                    if self.ws_handler and self.broadcast_enabled:
                         await self.ws_handler.broadcast_task_status(memo, "failed", str(e))
                     
                     executed_tasks.append({
@@ -703,6 +704,9 @@ def run_full_subagent(role, task, config, logger=None, model=None,
     _watch_done = threading.Event()  # N5：取消观察者线程退出信号（finally 置位）
     try:
         max_tokens = max(1, min(int(max_tokens or 2048), constants.DEFAULT_MAX_TOKENS))
+        # max_turns 钳制：0/负数此前致首轮即拦截（只剩收尾报告、无任何执行）；
+        # 0/空回退默认值的惯例对齐 max_tokens，下限 1 保证至少执行一个任务轮
+        max_turns = max(1, int(max_turns or 10))
         temp = temperature if temperature is not None else constants.DEFAULT_TEMPERATURE
 
         # 创建子代理：完整 DeepSeekChat 实例，role 作为 system_prompt
@@ -2099,6 +2103,8 @@ class WebSocketHandler:
         # 排队等锁，多连接并发 /new 可耗尽默认池（阻塞新消息处理）
         self._cmd_executor = ThreadPoolExecutor(max_workers=2,
                                                 thread_name_prefix="ws-cmd")
+        # J7（审计 2026-08-19）：broadcast 单客户端发送超时（半开 TCP 防卡死）
+        self.broadcast_send_timeout = 5.0
 
     def shutdown(self):
         """I 批：释放命令专用线程池（服务退出时调用）"""
@@ -2269,13 +2275,30 @@ class WebSocketHandler:
             self.logger.error(f"发送消息失败: {e}")
     
     async def broadcast(self, message):
-        """广播消息到所有客户端"""
-        for websocket in self.connected_clients.copy():
+        """广播消息到所有客户端。
+
+        J7（审计 2026-08-19）：此前串行 await 且 send_message 吞掉全部异常，
+        broadcast 的 except→unregister 为死代码——ping 禁用（ping_interval=None）
+        下半开 TCP 无法探测，backpressure 下 websocket.send 可无限期阻塞，
+        卡死广播与调度器循环。现改为每客户端并发发送 + wait_for 超时，
+        超时即 unregister 回收（discard 幂等）。
+        """
+        clients = list(self.connected_clients)
+        if not clients:
+            return
+
+        async def _send_one(websocket):
             try:
-                await self.send_message(websocket, message)
+                await asyncio.wait_for(
+                    self.send_message(websocket, message),
+                    timeout=self.broadcast_send_timeout)
             except Exception:
-                # N13：不再裸 except——吞掉 CancelledError 会破坏任务取消语义
+                # 超时/发送异常：回收该连接（取消事件被 wait_for 传播，
+                # CancelledError 为 BaseException 不在此列，不影响任务取消语义）
                 await self.unregister(websocket)
+
+        await asyncio.gather(*(_send_one(ws) for ws in clients),
+                             return_exceptions=True)
     
     async def broadcast_task_status(self, task: Dict, status: str, message: str = None):
         """广播任务状态"""
@@ -2379,16 +2402,26 @@ class WebSocketHandler:
             else:
                 reminder_time = (datetime.now() + timedelta(seconds=delay)).strftime(constants.DATETIME_FORMAT)
             
-            memo_id = self.ai_manager.memo_db.add_user_task(
-                title=title,
-                content=content,
-                reminder_time=reminder_time,
-                repeat_type=repeat_type,
-                repeat_interval=repeat_interval,
-                repeat_interval_unit=repeat_interval_unit,
-                repeat_end_time=repeat_end_time,
-                is_immediate=is_immediate
-            )
+            # J1（审计 2026-08-19）：add_memo 入库校验抛 ValueError（畸形时间/
+            # 重复间隔等），此处转为友好错误消息，不让 handle_message 顶层
+            # 兜底以笼统的"处理失败"收场
+            try:
+                memo_id = self.ai_manager.memo_db.add_user_task(
+                    title=title,
+                    content=content,
+                    reminder_time=reminder_time,
+                    repeat_type=repeat_type,
+                    repeat_interval=repeat_interval,
+                    repeat_interval_unit=repeat_interval_unit,
+                    repeat_end_time=repeat_end_time,
+                    is_immediate=is_immediate
+                )
+            except ValueError as e:
+                await self.send_message(websocket, {
+                    "type": "error",
+                    "content": f"任务添加失败: {e}"
+                })
+                return
             
             immediate_msg = i18n.get('immediate_memo_added') if is_immediate else ""
             repeat_msg = ""
@@ -2437,6 +2470,12 @@ class WebSocketHandler:
                         "type": "error",
                         "content": i18n.get('memo_complete_failed', memo_id)
                     })
+        else:
+            # J15（审计 2026-08-19）：未知 action 此前静默吞掉，客户端无任何反馈
+            await self.send_message(websocket, {
+                "type": "error",
+                "content": f"未知的任务操作: {action}"
+            })
     
     async def handle_command(self, websocket, data):
         """处理命令消息"""
@@ -2467,6 +2506,14 @@ class WebSocketHandler:
                         await asyncio.sleep(0.1)
                         if not ai.is_busy():
                             break
+                # J11（审计 2026-08-19）：取消后旧回合可能仍在收尾（回发内容），
+                # 且新消息的 think 线程可能与 reset 无序抢 _msg_lock（RLock 无
+                # 公平性）——等待该连接处理标志清零后再排队 reset，避免新回合
+                # 在旧上下文上执行后被 reset 抹掉（消息"消失"）
+                for _ in range(20):
+                    if not session or not session.get("is_processing"):
+                        break
+                    await asyncio.sleep(0.1)
                 # 重置对话状态，重新加载系统提示词
                 # N3：reset_conversation 内部同步获取 _msg_lock（繁忙对话持锁
                 # 可达数十秒），直接调用会冻结整个事件循环（所有连接的心跳/
@@ -2716,7 +2763,7 @@ class WebSocketHandler:
         # 定义输出回调函数 - 实时发送
         def output_callback(msg_type, content):
             """AI输出的回调函数 - 实时发送每个chunk"""
-            self.logger.info(f"输出回调被调用: {msg_type}, 内容长度: {len(content)}")
+            self.logger.debug(f"输出回调被调用: {msg_type}, 内容长度: {len(content)}")
             
             # 创建发送消息的协程
             async def send_msg():
@@ -2938,8 +2985,11 @@ class EnhancedAIManager:
     async def handle_connection(self, websocket, path):
         """处理WebSocket连接 - 消息接收与处理解耦，确保中断信号能被即时处理"""
         self.logger.info(f"新连接: {websocket.remote_address}, path: {path}")
-        await self.ws_handler.register(websocket)
         try:
+            # J1（审计 2026-08-19）：register 移入 try——此前在 try 外，握手期
+            # 异常（如任务展示路径解析失败）逃逸时 finally 不执行，会话登记
+            # 永久泄漏；unregister 为 discard 幂等，提前失败也会被正常清理
+            await self.ws_handler.register(websocket)
             async for message in websocket:
                 # 【关键修复】用create_task异步处理消息，不await阻塞接收循环
                 # 这样当AI在后台生成响应时，interrupt消息仍能被立即接收和处理
@@ -3307,9 +3357,9 @@ def handle_once_mode(manager, args) -> bool:
         if state["exit_code"] == 0 and not state["interrupted"] and not state["timed_out"]:
             if response is None or (isinstance(response, str) and not response.strip()):
                 state["exit_code"] = 2
-    except KeyboardInterrupt:
-        state["interrupted"] = True
     except Exception as e:
+        # J15（审计 2026-08-19）：except KeyboardInterrupt 为死代码——SIGINT
+        # 已由自定义 handler 接管（_sigint_handler），KeyboardInterrupt 永不抛出
         print(f"{i18n.get('error_prefix')}{e}", file=sys.stderr)
         state["exit_code"] = 2
     finally:
diff --git a/aibox/common/atomic.py b/aibox/common/atomic.py
new file mode 100644
index 0000000..9d790b8
--- /dev/null
+++ b/aibox/common/atomic.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+"""
+common.atomic - 原子写文件工具（J5，审计 2026-08-19）
+
+同目录 mkstemp 临时文件 + fsync + os.replace：进程中断/断电不留半截文件；
+mkstemp 随机文件名避免多进程并发写同路径互踩（conversation_history 旧实现
+的固定 .tmp 名在并发场景会互相覆盖）。仅依赖标准库，供 common/subsystems
+各写路径复用。
+"""
+
+import os
+import tempfile
+
+
+def atomic_write_text(path: str, content: str) -> None:
+    """原子写文本文件。失败时清理临时文件并抛出原异常。"""
+    path = os.path.expanduser(path)
+    directory = os.path.dirname(path) or "."
+    os.makedirs(directory, exist_ok=True)
+    fd, tmp_path = tempfile.mkstemp(prefix=".aibox_tmp_", dir=directory)
+    try:
+        with os.fdopen(fd, "w", encoding="utf-8") as f:
+            f.write(content)
+            f.flush()
+            os.fsync(f.fileno())
+        os.replace(tmp_path, path)
+    except BaseException:
+        try:
+            os.unlink(tmp_path)
+        except OSError:
+            pass
+        raise
diff --git a/aibox/common/config.py b/aibox/common/config.py
index d293eea..5f88672 100644
--- a/aibox/common/config.py
+++ b/aibox/common/config.py
@@ -9,8 +9,12 @@ common.config - aibox 配置管理器
 import os
 import json
 import copy
+import shutil
+import threading
+from datetime import datetime
 from typing import Dict, Optional
 
+from .atomic import atomic_write_text
 from .i18n import i18n
 class ConfigManager:
     """配置管理器 - 单例模式，负责加载和保存配置"""
@@ -18,15 +22,20 @@ class ConfigManager:
     _instance = None
     _config = None
     _config_path = None
+    _instance_lock = threading.Lock()
     
     def __new__(cls):
-        if cls._instance is None:
-            cls._instance = super().__new__(cls)
+        # J6（审计 2026-08-19）：此前单例创建与初始化均无锁——多线程首例
+        # 并发可双实例、双重加载配置
+        with cls._instance_lock:
+            if cls._instance is None:
+                cls._instance = super().__new__(cls)
         return cls._instance
     
     def __init__(self):
-        if self._config is None:
-            self._load_config()
+        with self._instance_lock:
+            if self._config is None:
+                self._load_config()
     
     def _get_default_config_path(self) -> str:
         env_config = os.environ.get("AI_CONFIG_PATH")
@@ -183,6 +192,10 @@ class ConfigManager:
                 print(i18n.get('config_loaded', config_path))
             except Exception as e:
                 print(f"⚠️ {i18n.get('error_prefix')}{e}，使用默认配置")
+                # J5（审计 2026-08-19）：损坏文件先备份再继续——此前直接改用
+                # 默认配置，任一后续保存会用"默认+本次改动"整体覆盖原文件，
+                # proxy/api/context 等全部手工配置永久丢失
+                self._backup_corrupted_config(config_path)
                 self._config = self._get_default_config()
         else:
             print(i18n.get('config_not_found', config_path))
@@ -190,6 +203,15 @@ class ConfigManager:
             self._save_default_config(config_path)
         self._migrate_legacy_proxy_password()
     
+    def _backup_corrupted_config(self, config_path: str):
+        """J5：损坏配置先复制备份（带时间戳），防止后续保存整体覆盖丢失"""
+        try:
+            backup = f"{config_path}.corrupt.{datetime.now().strftime('%Y%m%d_%H%M%S')}"
+            shutil.copy2(config_path, backup)
+            print(f"⚠️ 已备份损坏的配置文件到 {backup}")
+        except Exception as e:
+            print(f"⚠️ 备份损坏配置文件失败: {e}")
+
     def _merge_configs(self, default: Dict, user: Dict) -> Dict:
         result = default.copy()
         for key, value in user.items():
@@ -201,9 +223,9 @@ class ConfigManager:
     
     def _save_default_config(self, config_path: str):
         try:
-            os.makedirs(os.path.dirname(config_path), exist_ok=True)
-            with open(config_path, 'w', encoding='utf-8') as f:
-                json.dump(self._get_default_config(), f, ensure_ascii=False, indent=2)
+            atomic_write_text(
+                config_path,
+                json.dumps(self._get_default_config(), ensure_ascii=False, indent=2))
             print(i18n.get('config_created', config_path))
         except:
             pass
@@ -296,9 +318,10 @@ class ConfigManager:
             socks = safe_config.get("proxy", {}).get("socks5")
             if socks and socks.get("password"):
                 socks["password"] = None
-            os.makedirs(os.path.dirname(config_path), exist_ok=True)
-            with open(config_path, 'w', encoding='utf-8') as f:
-                json.dump(safe_config, f, ensure_ascii=False, indent=2)
+            # J5：原子写（mkstemp + fsync + os.replace），崩溃不留半截 JSON
+            atomic_write_text(
+                config_path,
+                json.dumps(safe_config, ensure_ascii=False, indent=2))
             print(f"✅ 配置已保存到 {config_path}")
             return True
         except Exception as e:
diff --git a/aibox/entry.html b/aibox/entry.html
index f5aa68f..43863f6 100644
--- a/aibox/entry.html
+++ b/aibox/entry.html
@@ -6,10 +6,12 @@
     <title>AI智能助手 - Socket.IO客户端</title>
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/styles/github-dark.min.css">
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/marked/9.1.6/marked.min.js"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/highlight.min.js"></script>
+    <!-- J13（审计 2026-08-19）：CDN 脚本补 SRI integrity，防供应链劫持 -->
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/marked/9.1.6/marked.min.js" integrity="sha384-odPBjvtXVM/5hOYIr3A1dB+flh0c3wAT3bSesIOqEGmyUA4JoKf/YTWy0XKOYAY7" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/highlight.min.js" integrity="sha384-g4mRvs7AO0/Ol5LxcGyz4Doe21pVhGNnC3EQw5shw+z+aXDN86HqUdwXWO+Gz2zI" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/dompurify/3.2.4/purify.min.js" integrity="sha384-eEu5CTj3qGvu9PdJuS+YlkNi7d2XxQROAFYOr59zgObtlcux1ae1Il3u7jvdCSWu" crossorigin="anonymous"></script>
     <!-- Socket.IO 客户端库 -->
-    <script src="https://cdn.socket.io/4.5.0/socket.io.min.js"></script>
+    <script src="https://cdn.socket.io/4.5.0/socket.io.min.js" integrity="sha384-7EyYLQZgWBi67fBtVxw60/OWl1kjsfrPFcaU0pp0nAh+i8FD068QogUvg85Ewy1k" crossorigin="anonymous"></script>
     <style>
         /* 样式保持不变，完全使用原有的样式 */
         * {
@@ -982,6 +984,15 @@
     </template>
     
     <script>
+        // J2（审计 2026-08-19）：marked 输出经 DOMPurify 净化——AI 输出/命令
+        // 执行结果是不可信输入，含原始 HTML 即可注入脚本；DOMPurify 缺失时
+        // 退化为转义文本（只显示不执行，防 XSS 兜底）
+        function renderMarkdown(content) {
+            const html = marked.parse(content);
+            if (window.DOMPurify) return DOMPurify.sanitize(html);
+            return html.replace(/</g, '&lt;');
+        }
+
         document.addEventListener('DOMContentLoaded', function() {
             // 配置marked
             marked.setOptions({
@@ -1124,7 +1135,7 @@
                 textDiv.setAttribute('data-raw-content', streamData.content);
                 
                 if (markdownEnabled) {
-                    textDiv.innerHTML = marked.parse(streamData.content);
+                    textDiv.innerHTML = renderMarkdown(streamData.content);
                     textDiv.querySelectorAll('pre code').forEach((block) => {
                         hljs.highlightElement(block);
                     });
@@ -1419,7 +1430,7 @@
                         const rawContent = msgDiv.getAttribute('data-raw-content');
                         if (rawContent) {
                             if (markdownEnabled) {
-                                msgDiv.innerHTML = marked.parse(rawContent);
+                                msgDiv.innerHTML = renderMarkdown(rawContent);
                                 msgDiv.classList.add('markdown-body');
                                 addCopyButtonsToCodeBlocks(msgDiv);
                             } else {
diff --git a/aibox/entry1.html b/aibox/entry1.html
index 50d6f86..35c06f9 100644
--- a/aibox/entry1.html
+++ b/aibox/entry1.html
@@ -8,10 +8,12 @@
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
     <!-- highlight.js 代码高亮 + marked markdown解析 -->
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/styles/github-dark.min.css">
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/marked/9.1.6/marked.min.js"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/highlight.min.js"></script>
+    <!-- J13（审计 2026-08-19）：CDN 脚本补 SRI integrity，防供应链劫持 -->
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/marked/9.1.6/marked.min.js" integrity="sha384-odPBjvtXVM/5hOYIr3A1dB+flh0c3wAT3bSesIOqEGmyUA4JoKf/YTWy0XKOYAY7" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/highlight.min.js" integrity="sha384-g4mRvs7AO0/Ol5LxcGyz4Doe21pVhGNnC3EQw5shw+z+aXDN86HqUdwXWO+Gz2zI" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/dompurify/3.2.4/purify.min.js" integrity="sha384-eEu5CTj3qGvu9PdJuS+YlkNi7d2XxQROAFYOr59zgObtlcux1ae1Il3u7jvdCSWu" crossorigin="anonymous"></script>
     <!-- Socket.IO 客户端库 -->
-    <script src="https://cdn.socket.io/4.5.0/socket.io.min.js"></script>
+    <script src="https://cdn.socket.io/4.5.0/socket.io.min.js" integrity="sha384-7EyYLQZgWBi67fBtVxw60/OWl1kjsfrPFcaU0pp0nAh+i8FD068QogUvg85Ewy1k" crossorigin="anonymous"></script>
     <style>
         /* ========== 融合小猫风格 + WebSocket增强样式 ========== */
         * {
@@ -498,6 +500,15 @@
 
 <script>
     (function(){
+        // J2（审计 2026-08-19）：marked 输出经 DOMPurify 净化——AI 输出/命令
+        // 执行结果是不可信输入，含原始 HTML 即可注入脚本；DOMPurify 缺失时
+        // 退化为转义文本（只显示不执行，防 XSS 兜底）
+        function renderMarkdown(content) {
+            const html = marked.parse(content);
+            if (window.DOMPurify) return DOMPurify.sanitize(html);
+            return html.replace(/</g, '&lt;');
+        }
+
         // ---------- DOM 元素 ----------
         const bgFile = document.getElementById('bgFile');
         const roleImg = document.getElementById('roleImg');
@@ -533,7 +544,12 @@
             const div = document.createElement('div');
             div.className = isError ? 'error-msg' : 'system-msg';
             div.style.cssText = 'background:rgba(0,0,0,0.6); border-radius:16px; padding:6px 12px; margin:6px 0; font-size:12px;';
-            div.innerHTML = `<i class="fas ${isError ? 'fa-exclamation-triangle' : 'fa-info-circle'}"></i> ${text}`;
+            // J2：text 为服务端内容（命令执行结果/AI 输出），禁止拼 innerHTML——
+            // 原实现 `${text}` 模板拼接使任意 HTML 注入执行；图标为静态字面量
+            const icon = document.createElement('i');
+            icon.className = `fas ${isError ? 'fa-exclamation-triangle' : 'fa-info-circle'}`;
+            div.appendChild(icon);
+            div.appendChild(document.createTextNode(' ' + text));
             chatBox.appendChild(div);
             chatBox.scrollTop = chatBox.scrollHeight;
         }
@@ -545,7 +561,7 @@
             if(textDiv) {
                 textDiv.setAttribute('data-raw', stream.content);
                 if(markdownEnabled) {
-                    textDiv.innerHTML = marked.parse(stream.content);
+                    textDiv.innerHTML = renderMarkdown(stream.content);
                     textDiv.querySelectorAll('pre code').forEach(block => hljs.highlightElement(block));
                 } else textDiv.innerText = stream.content;
             }
@@ -572,7 +588,12 @@
                 if(!streamingTasks[eid]) {
                     const sep = document.createElement('div');
                     sep.className = 'task-separator';
-                    sep.innerHTML = `<i class="fas fa-bolt"></i> 定时任务 #${taskMeta.taskId} (${taskMeta.taskTitle || '执行'}) 第${taskMeta.triggerCount||1}次执行`;
+                    // J2：taskMeta.taskTitle 为服务端可控内容，禁止拼 innerHTML
+                    const bolt = document.createElement('i');
+                    bolt.className = 'fas fa-bolt';
+                    sep.appendChild(bolt);
+                    sep.appendChild(document.createTextNode(
+                        ` 定时任务 #${taskMeta.taskId} (${taskMeta.taskTitle || '执行'}) 第${taskMeta.triggerCount||1}次执行`));
                     chatBox.appendChild(sep);
                     const taskDiv = document.createElement('div');
                     taskDiv.className = 'task-msg streaming';
@@ -590,7 +611,7 @@
                     if(st && st.element) {
                         const textDiv = st.element.querySelector('.message-text');
                         if(textDiv) {
-                            if(markdownEnabled) textDiv.innerHTML = marked.parse(st.content);
+                            if(markdownEnabled) textDiv.innerHTML = renderMarkdown(st.content);
                             else textDiv.innerText = st.content;
                             textDiv.querySelectorAll('pre code').forEach(block => hljs.highlightElement(block));
                         }
@@ -613,7 +634,7 @@
                 if(task.timer) clearTimeout(task.timer);
                 if(task.element) {
                     const txtDiv = task.element.querySelector('.message-text');
-                    if(txtDiv && markdownEnabled) txtDiv.innerHTML = marked.parse(task.content);
+                    if(txtDiv && markdownEnabled) txtDiv.innerHTML = renderMarkdown(task.content);
                     task.element.classList.remove('streaming');
                 }
                 globalMsgCount++;
diff --git a/aibox/frontend.html b/aibox/frontend.html
index 2c460ca..2ee4d94 100644
--- a/aibox/frontend.html
+++ b/aibox/frontend.html
@@ -6,8 +6,10 @@
     <title>AI智能助手 - WebSocket直连</title>
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/styles/github-dark.min.css">
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/marked/9.1.6/marked.min.js"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/highlight.min.js"></script>
+    <!-- J13（审计 2026-08-19）：CDN 脚本补 SRI integrity，防供应链劫持 -->
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/marked/9.1.6/marked.min.js" integrity="sha384-odPBjvtXVM/5hOYIr3A1dB+flh0c3wAT3bSesIOqEGmyUA4JoKf/YTWy0XKOYAY7" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.8.0/highlight.min.js" integrity="sha384-g4mRvs7AO0/Ol5LxcGyz4Doe21pVhGNnC3EQw5shw+z+aXDN86HqUdwXWO+Gz2zI" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/dompurify/3.2.4/purify.min.js" integrity="sha384-eEu5CTj3qGvu9PdJuS+YlkNi7d2XxQROAFYOr59zgObtlcux1ae1Il3u7jvdCSWu" crossorigin="anonymous"></script>
     <style>
         /* 样式保持不变，完全使用原有的样式 */
         * {
@@ -951,6 +953,15 @@
     </template>
     
     <script>
+        // J2（审计 2026-08-19）：marked 输出经 DOMPurify 净化——AI 输出/命令
+        // 执行结果是不可信输入，含原始 HTML 即可注入脚本；DOMPurify 缺失时
+        // 退化为转义文本（只显示不执行，防 XSS 兜底）
+        function renderMarkdown(content) {
+            const html = marked.parse(content);
+            if (window.DOMPurify) return DOMPurify.sanitize(html);
+            return html.replace(/</g, '&lt;');
+        }
+
         document.addEventListener('DOMContentLoaded', function() {
             // 配置marked
             marked.setOptions({
@@ -1048,7 +1059,7 @@
                 textDiv.setAttribute('data-raw-content', streamData.content);
                 
                 if (markdownEnabled) {
-                    textDiv.innerHTML = marked.parse(streamData.content);
+                    textDiv.innerHTML = renderMarkdown(streamData.content);
                     textDiv.querySelectorAll('pre code').forEach((block) => {
                         hljs.highlightElement(block);
                     });
@@ -1336,7 +1347,7 @@
                         const rawContent = msgDiv.getAttribute('data-raw-content');
                         if (rawContent) {
                             if (markdownEnabled) {
-                                msgDiv.innerHTML = marked.parse(rawContent);
+                                msgDiv.innerHTML = renderMarkdown(rawContent);
                                 msgDiv.classList.add('markdown-body');
                                 addCopyButtonsToCodeBlocks(msgDiv);
                             } else {
diff --git a/aibox/model_config.py b/aibox/model_config.py
index 1e2abe5..7620aa7 100644
--- a/aibox/model_config.py
+++ b/aibox/model_config.py
@@ -25,6 +25,7 @@ from typing import Dict, List, Optional
 sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
 
 from common import ConfigManager  # noqa: E402
+from llm_client import _sanitize_log_msg  # noqa: E402
 
 PROFILE_NAME_RE = re.compile(r"^[A-Za-z0-9_-]+$")
 
@@ -195,7 +196,9 @@ def test_profile(config: ConfigManager, name: str, logger=None) -> str:
             return f"❌ 档案 '{name}' 验证失败：端点返回空响应（多为 4xx 认证/参数错误）"
         return f"✅ 档案 '{name}' 连通正常：{str(result).strip()[:60]}"
     except Exception as e:
-        return f"❌ 档案 '{name}' 验证失败：{str(e)}"
+        # J4（审计 2026-08-19）：异常消息可能含 response.text 片段，网关/WAF
+        # 错误页会回显 Authorization 头——脱敏 Bearer 令牌后再回显终端
+        return f"❌ 档案 '{name}' 验证失败：{_sanitize_log_msg(str(e))}"
 
 
 # ==================== 交互式菜单 ====================
@@ -325,10 +328,12 @@ def _add_flow(config: ConfigManager):
         print("已取消")
         return
 
+    # J8（审计 2026-08-19）：原始字符串直传——此前交互层先 float()/int()，
+    # 非数字输入直接 traceback 退出，add_profile 内部的容错成为死代码
     msgs = add_profile(config, name, api_url, model,
                        api_key_env=api_key_env, display_name=display_name,
-                       temperature=float(temperature_raw) if temperature_raw else None,
-                       timeout=int(timeout_raw) if timeout_raw else None,
+                       temperature=temperature_raw or None,
+                       timeout=timeout_raw or None,
                        reasoning_enabled=reasoning, fallback=fallback,
                        set_default=set_default)
     for m in msgs:
diff --git a/aibox/skills/nmapskills.py b/aibox/skills/nmapskills.py
index 230cc94..e278c4b 100755
--- a/aibox/skills/nmapskills.py
+++ b/aibox/skills/nmapskills.py
@@ -3,6 +3,7 @@
 一个基于python-nmap的局域网Ping扫描工具
 """
 import argparse
+import shlex
 import sys
 import socket
 
@@ -25,7 +26,9 @@ def scan_network(network="192.168.1.0/24", timeout=3, verbose=False):
     print("-" * 50)
 
     try:
-        result = nm.scan(hosts=network, arguments=arguments)
+        # J12（审计 2026-08-19）：python-nmap 内部把 hosts 拼进 shell 命令
+        # 执行——LLM/AI 可控的 network 参数需 shlex.quote，防参数/命令注入
+        result = nm.scan(hosts=shlex.quote(network), arguments=arguments)
     except Exception as e:
         print(f"❌ 扫描失败: {e}")
         print("💡 提示：请确保已安装 nmap (sudo apt install nmap) 并有足够权限")
diff --git a/aibox/skills/screenshot.py b/aibox/skills/screenshot.py
index 1c9af43..894a8fb 100755
--- a/aibox/skills/screenshot.py
+++ b/aibox/skills/screenshot.py
@@ -41,6 +41,10 @@ def take_screenshot_windows(output_path, delay=0):
     if delay > 0:
         time.sleep(delay)
     
+    # J12（审计 2026-08-19）：output_path 经 PowerShell 单引号转义——
+    # 路径中的单引号翻倍（PS 字符串转义），AI/用户可控文件名无法闭合
+    # 字符串注入脚本（此前 `${output_path}` 直拼，`");calc;#` 即注入）
+    ps_path = str(output_path).replace("'", "''")
     try:
         ps_script = f'''
 Add-Type -AssemblyName System.Windows.Forms
@@ -53,11 +57,11 @@ $bitmap = New-Object System.Drawing.Bitmap $bounds.Width, $bounds.Height
 $graphics = [System.Drawing.Graphics]::FromImage($bitmap)
 $graphics.CopyFromScreen($bounds.X, $bounds.Y, 0, 0, $bounds.Size)
 
-$bitmap.Save("{output_path}", [System.Drawing.Imaging.ImageFormat]::Png)
+$bitmap.Save('{ps_path}', [System.Drawing.Imaging.ImageFormat]::Png)
 $graphics.Dispose()
 $bitmap.Dispose()
 
-Write-Output "截图已保存: {output_path}"
+Write-Output "截图已保存: {ps_path}"
 '''
         
         result = subprocess.run(
diff --git a/aibox/subsystems/conversation_history.py b/aibox/subsystems/conversation_history.py
index 9e0d2b4..f812dae 100644
--- a/aibox/subsystems/conversation_history.py
+++ b/aibox/subsystems/conversation_history.py
@@ -22,6 +22,7 @@ from pathlib import Path
 from typing import TYPE_CHECKING, Dict, List, Optional
 
 from common import ConfigManager, Logger, constants
+from common.atomic import atomic_write_text
 
 if TYPE_CHECKING:
     # 仅用于类型注解，避免运行时循环导入；MemoryDatabase 来自同包 subsystems.db
@@ -73,11 +74,9 @@ class ConversationHistory:
     def _atomic_write_json(path: Path, data) -> None:
         """原子写 JSON（I 批，审计 2026-08-18）：先写同目录临时文件再
         os.replace——此前 'w' 直写，进程中断/崩溃留半截 JSON（current 损坏
-        后仅静默置 None，历史内容丢失）"""
-        tmp = path.with_suffix(path.suffix + ".tmp")
-        with open(tmp, 'w', encoding='utf-8') as f:
-            json.dump(data, f, ensure_ascii=False, indent=2)
-        os.replace(tmp, path)
+        后仅静默置 None，历史内容丢失）。J5（2026-08-19）：委托 common.atomic
+        （mkstemp 随机名），修复旧实现固定 .tmp 名在多进程并发写同路径互踩。"""
+        atomic_write_text(str(path), json.dumps(data, ensure_ascii=False, indent=2))
 
     def _save_history_index(self):
         """保存历史索引"""
diff --git a/aibox/subsystems/db.py b/aibox/subsystems/db.py
index 7b8bbfc..525907d 100644
--- a/aibox/subsystems/db.py
+++ b/aibox/subsystems/db.py
@@ -141,11 +141,14 @@ class MemoryDatabase:
         """删除记忆"""
         with sqlite3.connect(self.db_path) as conn:
             cursor = conn.cursor()
+            # J3（审计 2026-08-19）：必须先删 fts 再删内容表——外部内容表
+            # （content=memories）删除索引条目需从内容表回读旧值，内容行
+            # 先删会导致索引条目永久残留（MATCH 仍可命中已删 rowid）
+            cursor.execute('DELETE FROM memories_fts WHERE rowid = ?', (memory_id,))
             cursor.execute('DELETE FROM memories WHERE id = ?', (memory_id,))
             deleted = cursor.rowcount > 0
 
             if deleted:
-                cursor.execute('DELETE FROM memories_fts WHERE rowid = ?', (memory_id,))
                 conn.commit()
                 self.logger.info(f"已删除记忆 ID: {memory_id}")
 
@@ -274,11 +277,12 @@ class MemoryDatabase:
         with sqlite3.connect(self.db_path) as conn:
             cursor = conn.cursor()
             placeholders = ','.join(['?'] * len(memory_ids))
+            # J3：同 delete_memory——先删 fts 再删内容表，防索引条目残留
+            cursor.execute(f'DELETE FROM memories_fts WHERE rowid IN ({placeholders})', memory_ids)
             cursor.execute(f'DELETE FROM memories WHERE id IN ({placeholders})', memory_ids)
             deleted_count = cursor.rowcount
 
             if deleted_count > 0:
-                cursor.execute(f'DELETE FROM memories_fts WHERE rowid IN ({placeholders})', memory_ids)
                 conn.commit()
                 self.logger.info(f"已批量删除 {deleted_count} 条记忆")
 
@@ -300,10 +304,19 @@ class MemoDatabase:
         self.logger = Logger("MemoDB")
         self._init_database()
 
+    def _connect(self) -> sqlite3.Connection:
+        """统一连接工厂（J9，审计 2026-08-19）：busy_timeout 覆盖全部写路径，
+        不再只有 mark_as_triggered 一条路径等待锁释放"""
+        conn = sqlite3.connect(self.db_path)
+        conn.execute("PRAGMA busy_timeout = 10000")
+        return conn
+
     def _init_database(self):
         """初始化备忘录表"""
-        with sqlite3.connect(self.db_path) as conn:
+        with self._connect() as conn:
             cursor = conn.cursor()
+            # J9：WAL 显式设置——与 MemoryDatabase 同库文件时不再依赖创建顺序
+            cursor.execute("PRAGMA journal_mode=WAL")
 
             cursor.execute('''
                 CREATE TABLE IF NOT EXISTS memos (
@@ -349,10 +362,34 @@ class MemoDatabase:
                  repeat_interval_unit: str = 'days', repeat_end_time: str = None,
                  is_immediate: bool = False) -> int:
         """添加任务 - 所有任务都是对话任务，不再需要metadata和任务类型"""
+        # J1（审计 2026-08-19）：入库校验——畸形时间/数字字段此前原样入库，
+        # 下游无防护解析点引发调度器失败热循环与新连接握手崩溃（审计报告
+        # §13.1 J1）。CLI/WS/memo 工具三入口均经本方法，校验一处覆盖。
+        if reminder_time:
+            try:
+                datetime.strptime(reminder_time, constants.DATETIME_FORMAT)
+            except (ValueError, TypeError):
+                raise ValueError(
+                    f"提醒时间格式非法: {reminder_time!r}（应为 {constants.DATETIME_FORMAT}）")
+        if repeat_end_time:
+            try:
+                datetime.strptime(repeat_end_time, constants.DATETIME_FORMAT)
+            except (ValueError, TypeError):
+                raise ValueError(
+                    f"重复结束时间格式非法: {repeat_end_time!r}（应为 {constants.DATETIME_FORMAT}）")
+        if repeat_type not in ("none", "daily", "weekly", "monthly", "custom"):
+            raise ValueError(f"无效的重复类型: {repeat_type!r}")
+        try:
+            repeat_interval = int(repeat_interval)
+        except (ValueError, TypeError):
+            raise ValueError(f"重复间隔必须是整数: {repeat_interval!r}")
+        if repeat_type == "custom" and repeat_interval <= 0:
+            raise ValueError("自定义重复需要设置有效的 repeat_interval (>0)")
+
         created_at = datetime.now().strftime(constants.DATETIME_FORMAT)
         tags_str = ",".join(tags) if tags else ""
 
-        with sqlite3.connect(self.db_path) as conn:
+        with self._connect() as conn:
             cursor = conn.cursor()
             cursor.execute('''
                 INSERT INTO memos
@@ -377,7 +414,7 @@ class MemoDatabase:
 
     def get_memo(self, memo_id: int) -> Optional[Dict]:
         """获取单个任务"""
-        with sqlite3.connect(self.db_path) as conn:
+        with self._connect() as conn:
             conn.row_factory = sqlite3.Row
             cursor = conn.cursor()
             cursor.execute('SELECT * FROM memos WHERE id = ?', (memo_id,))
@@ -392,7 +429,7 @@ class MemoDatabase:
 
     def get_pending_memos(self, limit: int = None, before_time: str = None, include_immediate: bool = False) -> List[Dict]:
         """获取待执行的任务 - 严格使用当前时间比较"""
-        with sqlite3.connect(self.db_path) as conn:
+        with self._connect() as conn:
             conn.row_factory = sqlite3.Row
             cursor = conn.cursor()
 
@@ -458,7 +495,7 @@ class MemoDatabase:
 
     def get_immediate_memos(self, limit: int = None) -> List[Dict]:
         """获取待执行的即时任务"""
-        with sqlite3.connect(self.db_path) as conn:
+        with self._connect() as conn:
             conn.row_factory = sqlite3.Row
             cursor = conn.cursor()
 
@@ -494,7 +531,7 @@ class MemoDatabase:
 
     def get_all_memos(self, include_completed: bool = False, limit: int = 50) -> List[Dict]:
         """获取所有任务"""
-        with sqlite3.connect(self.db_path) as conn:
+        with self._connect() as conn:
             conn.row_factory = sqlite3.Row
             cursor = conn.cursor()
 
@@ -533,13 +570,11 @@ class MemoDatabase:
         now = datetime.now()
         next_reminder = None
 
-        with sqlite3.connect(self.db_path) as conn:
+        with self._connect() as conn:
             conn.row_factory = sqlite3.Row
             cursor = conn.cursor()
-            # I 批（审计 2026-08-18）：多进程同库（CLI --memo-add + 服务调度）
-            # 写竞争时默认 5s 后直接报 database is locked——busy_timeout 让
-            # SQLite 等待锁释放（最长 10s）而不是立即失败
-            cursor.execute("PRAGMA busy_timeout = 10000")
+            # J9：busy_timeout 已由 _connect() 工厂统一设置（全部写路径一致），
+            # 多进程同库（CLI --memo-add + 服务调度）写竞争等待锁释放而非立即失败
             cursor.execute("BEGIN IMMEDIATE")
             try:
                 cursor.execute('SELECT * FROM memos WHERE id = ?', (memo_id,))
@@ -608,7 +643,11 @@ class MemoDatabase:
     def _should_end_repeat(self, memo: Dict, current_time: datetime) -> bool:
         """检查是否应该结束重复"""
         if memo['repeat_end_time']:
-            end_time = datetime.strptime(memo['repeat_end_time'], constants.DATETIME_FORMAT)
+            try:
+                end_time = datetime.strptime(memo['repeat_end_time'], constants.DATETIME_FORMAT)
+            except (ValueError, TypeError):
+                # J1：存量脏数据防御——解析失败视为无结束时间，不打断触发事务
+                return False
             if current_time > end_time:
                 return True
         return False
@@ -638,24 +677,37 @@ class MemoDatabase:
                     next_time = current_time.replace(year=current_time.year + 1, month=1, day=1) - timedelta(days=1)
                 else:
                     next_time = current_time.replace(month=current_time.month + 1, day=1) - timedelta(days=1)
-        elif memo['repeat_type'] == 'custom' and memo['repeat_interval'] > 0:
-            unit = memo.get('repeat_interval_unit', 'days')
-            if unit == 'minutes':
-                # 每N分钟重复：当前时间 + N分钟
-                next_time = current_time + timedelta(minutes=memo['repeat_interval'])
-            elif unit == 'hours':
-                # 每N小时重复：当前时间 + N小时
-                next_time = current_time + timedelta(hours=memo['repeat_interval'])
-            else:  # days
-                # 每N天重复：当前时间 + N天
-                next_time = current_time + timedelta(days=memo['repeat_interval'])
+        elif memo['repeat_type'] == 'custom':
+            # J1：repeat_interval 类型异常（存量脏数据）按 0 处理，
+            # 不再抛 TypeError 打崩触发事务引发热循环
+            try:
+                repeat_interval = int(memo.get('repeat_interval') or 0)
+            except (ValueError, TypeError):
+                repeat_interval = 0
+            if repeat_interval > 0:
+                unit = memo.get('repeat_interval_unit', 'days')
+                if unit == 'minutes':
+                    # 每N分钟重复：当前时间 + N分钟
+                    next_time = current_time + timedelta(minutes=repeat_interval)
+                elif unit == 'hours':
+                    # 每N小时重复：当前时间 + N小时
+                    next_time = current_time + timedelta(hours=repeat_interval)
+                else:  # days
+                    # 每N天重复：当前时间 + N天
+                    next_time = current_time + timedelta(days=repeat_interval)
+            else:
+                return None
         else:
             return None
 
         # 检查是否超过重复结束时间
         if memo['repeat_end_time']:
-            end_time = datetime.strptime(memo['repeat_end_time'], constants.DATETIME_FORMAT)
-            if next_time > end_time:
+            try:
+                end_time = datetime.strptime(memo['repeat_end_time'], constants.DATETIME_FORMAT)
+            except (ValueError, TypeError):
+                # J1：存量脏数据防御——解析失败视为无结束时间
+                end_time = None
+            if end_time and next_time > end_time:
                 return None
 
         return next_time
@@ -672,7 +724,7 @@ class MemoDatabase:
 
         completed_at = datetime.now().strftime(constants.DATETIME_FORMAT)
 
-        with sqlite3.connect(self.db_path) as conn:
+        with self._connect() as conn:
             cursor = conn.cursor()
             cursor.execute('''
                 UPDATE memos
@@ -691,7 +743,7 @@ class MemoDatabase:
     def delete_memo(self, memo_id: int) -> bool:
         """物理删除任务（M5：delete 语义此前被 complete_memo 顶替——只标记
         完成不删行，重复任务还会被推进而非移除，stats 计数失真）"""
-        with sqlite3.connect(self.db_path) as conn:
+        with self._connect() as conn:
             cursor = conn.cursor()
             cursor.execute("DELETE FROM memos WHERE id = ?", (memo_id,))
             conn.commit()
@@ -699,7 +751,7 @@ class MemoDatabase:
 
     def get_memo_stats(self) -> Dict:
         """获取任务统计信息"""
-        with sqlite3.connect(self.db_path) as conn:
+        with self._connect() as conn:
             cursor = conn.cursor()
 
             cursor.execute('SELECT COUNT(*) FROM memos')
@@ -732,8 +784,9 @@ class MemoDatabase:
             }
 
     def add_user_task(self, title: str, content: str = None, reminder_time: str = None,
-                     repeat_type: str = 'none', repeat_interval: int = 0,
-                     repeat_interval_unit: str = 'days', is_immediate: bool = False) -> int:
+                      repeat_type: str = 'none', repeat_interval: int = 0,
+                      repeat_interval_unit: str = 'days', repeat_end_time: str = None,
+                      is_immediate: bool = False) -> int:
         """添加用户任务（前端直接调用的任务）- 所有任务都是对话任务"""
         if not constants.MEMO_ALLOW_USER_TASKS:
             raise Exception("用户任务功能已禁用")
@@ -745,11 +798,23 @@ class MemoDatabase:
             repeat_type=repeat_type,
             repeat_interval=repeat_interval,
             repeat_interval_unit=repeat_interval_unit,
+            repeat_end_time=repeat_end_time,
             created_by="user",
             source="websocket",
             is_immediate=is_immediate
         )
 
+    @staticmethod
+    def _is_overdue_time(reminder_time: str, now: datetime) -> bool:
+        """J1：展示路径时间解析防御——格式异常按到期处理（对齐 Q5 语义），
+        不再抛 ValueError 打崩新连接握手流程"""
+        if not reminder_time:
+            return False
+        try:
+            return datetime.strptime(reminder_time, constants.DATETIME_FORMAT) < now
+        except (ValueError, TypeError):
+            return True
+
     def get_pending_tasks_for_user(self) -> List[Dict]:
         """获取待执行任务列表（用于前端显示）"""
         pending = self.get_pending_memos(include_immediate=False)
@@ -764,7 +829,7 @@ class MemoDatabase:
                 "content": memo['content'],
                 "reminder_time": memo['reminder_time'],
                 "priority": memo['priority'],
-                "is_overdue": datetime.strptime(memo['reminder_time'], constants.DATETIME_FORMAT) < now if memo['reminder_time'] else False,
+                "is_overdue": self._is_overdue_time(memo['reminder_time'], now),
                 "repeat_type": memo['repeat_type'],
                 "repeat_interval": memo.get('repeat_interval', 0),
                 "repeat_interval_unit": memo.get('repeat_interval_unit', 'days'),
diff --git a/aibox/subsystems/executors.py b/aibox/subsystems/executors.py
index a7889b3..a62429a 100644
--- a/aibox/subsystems/executors.py
+++ b/aibox/subsystems/executors.py
@@ -144,6 +144,8 @@ class SubprocessCommandExecutor(CommandExecutor):
         shell_dead_since = None  # shell 进程已死但 reader 未收到 EOF 的起始时刻
         while True:
             # 检查超时（readline 阻塞不再影响本判断）
+            # J16（审计 2026-08-19）：timeout<=0 语义为"不设超时"（有意为之，
+            # 调用方显式传 0 禁用）；registry 层 3600s 流式兜底仍生效
             if timeout > 0 and time.time() - start_time > timeout:
                 self._terminate_tree(process)
                 timeout_occurred = True
diff --git a/aibox/subsystems/prompt_manager.py b/aibox/subsystems/prompt_manager.py
index 21a58cb..da0b982 100644
--- a/aibox/subsystems/prompt_manager.py
+++ b/aibox/subsystems/prompt_manager.py
@@ -23,6 +23,7 @@ from datetime import datetime
 from typing import Dict, List, Optional
 
 from common import ConfigManager
+from common.atomic import atomic_write_text
 
 
 class PromptManager:
@@ -60,8 +61,12 @@ class PromptManager:
         return cls._instance
 
     def __init__(self):
-        if not self._prompts:
-            self._load_prompts()
+        # J6（审计 2026-08-19）：__new__ 的锁只防双实例，多线程首例并发
+        # 同时进入 __init__ 会使 _load_prompts 双重执行，_prompts（类属性）
+        # 整份翻倍——初始化检查与加载收进同一把锁
+        with self._instance_lock:
+            if not self._prompts:
+                self._load_prompts()
 
     def _get_prompts_dir(self) -> str:
         config = ConfigManager()
@@ -172,8 +177,8 @@ class PromptManager:
 【更新记录】
 - 上次更新：{timestamp}
 """
-            with open(identity_path, 'w', encoding='utf-8') as f:
-                f.write(updated_content)
+            # J5：原子写，崩溃不留半截提示词文件
+            atomic_write_text(identity_path, updated_content)
             self.reload()
             return True
         except Exception as e:
@@ -195,8 +200,8 @@ class PromptManager:
 【更新记录】
 - 上次更新：{timestamp}
 """
-            with open(status_path, 'w', encoding='utf-8') as f:
-                f.write(updated_content)
+            # J5：原子写，崩溃不留半截提示词文件
+            atomic_write_text(status_path, updated_content)
             self.reload()
             return True
         except Exception as e:
@@ -218,8 +223,8 @@ class PromptManager:
 【更新记录】
 - 上次更新：{timestamp}
 """
-            with open(soul_path, 'w', encoding='utf-8') as f:
-                f.write(updated_content)
+            # J5：原子写，崩溃不留半截提示词文件
+            atomic_write_text(soul_path, updated_content)
             self.reload()
             return True
         except Exception as e:
diff --git a/aibox/subsystems/skill_manager.py b/aibox/subsystems/skill_manager.py
index f766b51..3750a41 100644
--- a/aibox/subsystems/skill_manager.py
+++ b/aibox/subsystems/skill_manager.py
@@ -27,6 +27,9 @@ class SkillManager:
     2. Markdown 文件 (.md)：第一行为简介（# 标题或普通文本），其余为技能内容
     """
 
+    # J16（审计 2026-08-19）：--help 输出上限——内容会进系统提示词
+    MAX_HELP_LENGTH = 2000
+
     def __init__(self, logger: Optional[Logger] = None):
         self.logger = logger or Logger("SkillManager")
         # name -> {path, file, summary, content, is_markdown}
@@ -38,7 +41,11 @@ class SkillManager:
     # ------------------------------------------------------------------
 
     def _run_help(self, skill_path: str) -> str:
-        """执行 skill_path --help 并返回完整输出（stdout 优先，否则 stderr）。"""
+        """执行 skill_path --help 并返回完整输出（stdout 优先，否则 stderr）。
+
+        J16（审计 2026-08-19）：输出截断到 MAX_HELP_LENGTH——技能 --help
+        输出会进系统提示词，异常/恶意脚本可撑爆上下文。
+        """
         try:
             result = subprocess.run(
                 [skill_path, "--help"],
@@ -50,6 +57,8 @@ class SkillManager:
             output = result.stdout.strip()
             if not output:
                 output = result.stderr.strip()
+            if len(output) > self.MAX_HELP_LENGTH:
+                output = output[:self.MAX_HELP_LENGTH] + "\n…（已截断）"
             return output
         except Exception as e:
             self.logger.warning(f"运行 {skill_path} --help 失败: {e}")
@@ -129,12 +138,26 @@ class SkillManager:
             and not f.startswith('.')
         ]
 
-        for skill_file in skill_files:
+        # J16（审计 2026-08-19）：同名键冲突（foo 可执行文件与 foo.md）此前
+        # 由 listdir 顺序决定谁覆盖谁，行为不确定。改为可执行优先 + 确定性：
+        # 先加载可执行技能，Markdown 遇到已占用的同名键时跳过并告警
+        executable_files = [
+            f for f in skill_files
+            if not self._is_markdown_file(f)
+        ]
+        markdown_files = [f for f in skill_files if self._is_markdown_file(f)]
+
+        for skill_file in executable_files + markdown_files:
             skill_path = os.path.join(skills_dir, skill_file)
             skill_name = os.path.splitext(skill_file)[0]
             is_markdown = self._is_markdown_file(skill_file)
 
             if is_markdown:
+                if skill_name in self.skills:
+                    self.logger.warning(
+                        f"Markdown 技能 '{skill_file}' 与同名可执行技能冲突，已跳过"
+                        f"（可执行技能优先）")
+                    continue
                 # Markdown 格式技能：直接读取内容
                 summary, content = self._read_markdown_skill(skill_path)
                 if content:
diff --git a/aibox/tests/test_h_fixes.py b/aibox/tests/test_h_fixes.py
index 6e92883..a38eb15 100644
--- a/aibox/tests/test_h_fixes.py
+++ b/aibox/tests/test_h_fixes.py
@@ -231,14 +231,19 @@ class TestL2ProxySaveFailure:
         from common import ConfigManager
         cm = ConfigManager()
         cm._config_path = str(tmp_path / "config.json")
-        with mock.patch("builtins.open", side_effect=PermissionError("disk ro")):
+        # J5（审计 2026-08-19）：写路径改为原子写（mkstemp+os.replace），
+        # 磁盘失败改由 patch 原子写函数模拟（builtins.open 已不在路径上）
+        with mock.patch("common.config.atomic_write_text",
+                        side_effect=PermissionError("disk ro")):
             ok = cm.set_proxy("127.0.0.1", 1080, save=True)
         assert ok is False
 
     def test_proxy_tool_reports_save_failure(self, tmp_path):
         from tools import SetProxyTool
         tool = SetProxyTool(None)
-        with mock.patch("builtins.open", side_effect=PermissionError("disk ro")):
+        # J5：磁盘失败经原子写函数模拟
+        with mock.patch("common.config.atomic_write_text",
+                        side_effect=PermissionError("disk ro")):
             r = tool.execute(host="127.0.0.1", port=1080, save=True,
                              skip_check=True, enabled=True)
         assert "保存失败" in r
diff --git a/aibox/tests/test_i_fixes.py b/aibox/tests/test_i_fixes.py
index 3d14cf5..52d67ae 100644
--- a/aibox/tests/test_i_fixes.py
+++ b/aibox/tests/test_i_fixes.py
@@ -174,7 +174,17 @@ class TestF5LightSubagentCancel:
 class TestQ5MalformedReminderTime:
     def test_malformed_time_task_returned_as_due(self, tmp_path):
         db = MemoDatabase(db_path=str(tmp_path / "m.db"))
-        mid = db.add_memo(title="格式异常", content="c", reminder_time="不是时间")
+        # J1（审计 2026-08-19）：add_memo 已拒绝畸形时间（入库校验），
+        # 模拟校验落地前的存量脏数据需绕过 add_memo 直接 SQL 插入
+        import sqlite3
+        with sqlite3.connect(str(tmp_path / "m.db")) as conn:
+            cur = conn.cursor()
+            cur.execute('''INSERT INTO memos
+                (title, content, created_at, reminder_time, is_completed, source,
+                 repeat_type, repeat_interval, repeat_interval_unit, is_immediate)
+                VALUES (?, ?, ?, ?, 0, 'test', 'none', 0, 'days', 0)''',
+                ("格式异常", "c", "2026-08-18 00:00:00", "不是时间"))
+            mid = cur.lastrowid
         pending = db.get_pending_memos(before_time="2026-08-18 00:00:00")
         assert any(m["id"] == mid for m in pending)
 
diff --git a/aibox/tests/test_k_fixes.py b/aibox/tests/test_k_fixes.py
new file mode 100644
index 0000000..4ae56b6
--- /dev/null
+++ b/aibox/tests/test_k_fixes.py
@@ -0,0 +1,540 @@
+"""aibox 第五轮审计（Batch K）修复回归测试（2026-08-19）
+
+波次 1：
+  - J3：FTS 外部内容表删除换序后索引无残留（delete_memory / delete_memories_by_ids）
+  - J4：model_config 连通性验证异常消息 Bearer 令牌脱敏
+  - J6：PromptManager/ConfigManager 单例并发初始化不双重加载
+  - J8：add_profile 对非法温度/超时的容错（交互层不再抢先 float()/int()）
+
+波次 2（J1 任务系统投毒）：
+  - add_memo 入库校验：畸形时间/重复间隔/重复类型拒绝，三入口一处覆盖
+  - 存量脏数据防御：调度器预检、mark_as_triggered、展示路径不再打崩
+  - WS task add 友好错误 + register 握手异常可回收
+"""
+
+import asyncio
+import json
+import os
+import sqlite3
+import sys
+import threading
+import types
+from unittest import mock
+
+import pytest
+
+if "websockets" not in sys.modules:
+    sys.modules["websockets"] = types.ModuleType("websockets")
+
+import aibox  # noqa: E402
+import model_config  # noqa: E402
+from common import ConfigManager  # noqa: E402
+from subsystems.db import MemoDatabase, MemoryDatabase  # noqa: E402
+from subsystems.prompt_manager import PromptManager  # noqa: E402
+
+from test_model_config import _cfg  # noqa: E402
+
+
+# ==================== J3：FTS 删除顺序 ====================
+
+def _fts_hits(db_path, keyword):
+    conn = sqlite3.connect(str(db_path))
+    try:
+        return conn.execute(
+            "SELECT rowid FROM memories_fts WHERE memories_fts MATCH ?",
+            (f'"{keyword}"',)).fetchall()
+    finally:
+        conn.close()
+
+
+def _add_mem(db, content):
+    return db.add_memory(topic="话题", summary="摘要", content=content,
+                         start_time="2026-08-19 00:00:00",
+                         end_time="2026-08-19 00:00:01", importance=2)
+
+
+class TestJ3FtsDeleteOrder:
+    def test_delete_memory_leaves_no_fts_orphan(self, tmp_path):
+        """单条删除后 FTS 索引不得残留（修复前 MATCH 仍命中已删 rowid）"""
+        db = MemoryDatabase(db_path=str(tmp_path / "mem.db"))
+        mid = _add_mem(db, "机密内容甲")
+        assert _fts_hits(tmp_path / "mem.db", "机密内容甲")
+        assert db.delete_memory(mid) is True
+        assert _fts_hits(tmp_path / "mem.db", "机密内容甲") == []
+
+    def test_batch_delete_leaves_no_fts_orphan(self, tmp_path):
+        """批量删除同样不留索引残留"""
+        db = MemoryDatabase(db_path=str(tmp_path / "mem.db"))
+        ids = [_add_mem(db, f"机密内容乙{i}") for i in range(3)]
+        assert db.delete_memories_by_ids(ids) == 3
+        for i in range(3):
+            assert _fts_hits(tmp_path / "mem.db", f"机密内容乙{i}") == []
+
+    def test_search_after_delete_no_hit(self, tmp_path):
+        """删除后搜索（FTS 路径）不再命中已删内容"""
+        db = MemoryDatabase(db_path=str(tmp_path / "mem.db"))
+        mid = _add_mem(db, "独特关键词丙")
+        assert db.search_memories(["独特关键词丙"])
+        db.delete_memory(mid)
+        assert db.search_memories(["独特关键词丙"]) == []
+
+
+# ==================== J4：验证异常脱敏 ====================
+
+class TestJ4TestProfileSanitize:
+    def _models_cfg(self, tmp_path):
+        return _cfg(tmp_path, {"models": {"bad": {
+            "api_url": "https://api.example.com/v1/chat/completions",
+            "model": "m", "api_key_env": "K"}}})
+
+    def test_bearer_token_masked_in_failure_message(self, tmp_path):
+        """网关错误页回显 Authorization 头时，令牌不得出现在终端回显"""
+        cm = self._models_cfg(tmp_path)
+        err = RuntimeError("HTTP 502: Authorization: Bearer sk-secret12345")
+        with mock.patch("llm_client.create_llm_client", side_effect=err):
+            result = model_config.test_profile(cm, "bad")
+        assert "sk-secret12345" not in result
+        assert "Bearer ***" in result
+
+    def test_plain_error_message_preserved(self, tmp_path):
+        """无敏感内容的错误消息原样保留（脱敏不误伤）"""
+        cm = self._models_cfg(tmp_path)
+        with mock.patch("llm_client.create_llm_client",
+                        side_effect=RuntimeError("连接被拒绝")):
+            result = model_config.test_profile(cm, "bad")
+        assert "连接被拒绝" in result
+
+
+# ==================== J6：单例并发初始化 ====================
+
+class TestJ6SingletonInitRace:
+    def test_prompt_manager_concurrent_init_no_duplication(self, tmp_path):
+        """多线程首例并发：单实例且提示词只加载一份（修复前整份翻倍）"""
+        PromptManager._instance = None
+        PromptManager._prompts = []
+        PromptManager._prompts_dir = None
+        prompts_dir = tmp_path / "prompts"
+        prompts_dir.mkdir()
+        try:
+            barrier = threading.Barrier(8)
+            instances = [None] * 8
+
+            def worker(k):
+                barrier.wait()
+                instances[k] = PromptManager()
+
+            with mock.patch.object(ConfigManager, "get",
+                                   return_value=str(prompts_dir)):
+                threads = [threading.Thread(target=worker, args=(k,))
+                           for k in range(8)]
+                for t in threads:
+                    t.start()
+                for t in threads:
+                    t.join()
+
+            assert len({id(i) for i in instances}) == 1
+            files = [p["file"] for p in PromptManager._prompts]
+            assert files, "提示词应已加载"
+            assert len(files) == len(set(files)), f"提示词被重复加载: {files}"
+        finally:
+            PromptManager._instance = None
+            PromptManager._prompts = []
+            PromptManager._prompts_dir = None
+
+    def test_config_manager_concurrent_init_single_load(self, tmp_path):
+        """多线程首例并发：单实例且 _load_config 只执行一次"""
+        cfg_file = tmp_path / "config.json"
+        calls = {"n": 0}
+        original_load = ConfigManager._load_config
+
+        def counting_load(self):
+            calls["n"] += 1
+            original_load(self)
+
+        ConfigManager._instance = None
+        ConfigManager._config = None
+        ConfigManager._config_path = None
+        try:
+            barrier = threading.Barrier(8)
+            instances = [None] * 8
+
+            def worker(k):
+                barrier.wait()
+                instances[k] = ConfigManager()
+
+            with mock.patch.dict(os.environ, {"AI_CONFIG_PATH": str(cfg_file)}), \
+                 mock.patch.object(ConfigManager, "_load_config", counting_load):
+                threads = [threading.Thread(target=worker, args=(k,))
+                           for k in range(8)]
+                for t in threads:
+                    t.start()
+                for t in threads:
+                    t.join()
+
+            assert len({id(i) for i in instances}) == 1
+            assert calls["n"] == 1
+        finally:
+            ConfigManager._instance = None
+            ConfigManager._config = None
+            ConfigManager._config_path = None
+
+
+# ==================== J8：交互输入容错 ====================
+
+class TestJ8NumericTolerance:
+    def test_invalid_temperature_returns_friendly_error(self, tmp_path):
+        """非数字温度 → 友好错误而非 ValueError（交互层不再抢先 float()）"""
+        cm = _cfg(tmp_path, {"models": {}})
+        msgs = model_config.add_profile(
+            cm, "p1", "https://api.example.com/v1/chat/completions", "m1",
+            api_key_env="K", temperature="not-a-number")
+        assert any(m.startswith("❌") and "温度" in m for m in msgs)
+        assert "p1" not in model_config.get_models(cm)
+
+    def test_invalid_timeout_returns_friendly_error(self, tmp_path):
+        cm = _cfg(tmp_path, {"models": {}})
+        msgs = model_config.add_profile(
+            cm, "p1", "https://api.example.com/v1/chat/completions", "m1",
+            api_key_env="K", timeout="abc")
+        assert any(m.startswith("❌") and "超时" in m for m in msgs)
+        assert "p1" not in model_config.get_models(cm)
+
+    def test_string_numbers_accepted_and_clamped(self, tmp_path):
+        """数字字符串正常接受并钳制（交互层原始字符串直传语义）"""
+        cm = _cfg(tmp_path, {"models": {}})
+        msgs = model_config.add_profile(
+            cm, "p1", "https://api.example.com/v1/chat/completions", "m1",
+            api_key_env="K", temperature="0.7", timeout="120")
+        assert all(not m.startswith("❌") for m in msgs)
+        profile = model_config.get_models(cm)["p1"]
+        assert profile["temperature"] == 0.7
+        assert profile["timeout"] == 120
+
+
+# ==================== J1 波次 2：任务系统投毒 ====================
+
+def _insert_memo_raw(db_path, reminder_time="2026-08-18 00:00:00",
+                     repeat_type="none", repeat_interval=0,
+                     repeat_interval_unit="days", repeat_end_time=None):
+    """直接 SQL 插入任务行——模拟校验落地前的存量脏数据（绕过 add_memo）"""
+    with sqlite3.connect(str(db_path)) as conn:
+        cur = conn.cursor()
+        cur.execute('''INSERT INTO memos
+            (title, content, created_at, reminder_time, tags, priority, created_by,
+             is_completed, source, repeat_type, repeat_interval, repeat_interval_unit,
+             repeat_end_time, is_immediate)
+            VALUES ('t', 'c', '2026-08-18 00:00:00', ?, '', 1, 'test',
+             0, 'test', ?, ?, ?, ?, 0)''',
+            (reminder_time, repeat_type, repeat_interval, repeat_interval_unit,
+             repeat_end_time))
+        return cur.lastrowid
+
+
+class TestJ1AddMemoValidation:
+    def test_malformed_reminder_time_rejected(self, tmp_path):
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        with pytest.raises(ValueError, match="提醒时间格式非法"):
+            db.add_memo(title="t", reminder_time="不是时间")
+        with sqlite3.connect(str(tmp_path / "m.db")) as conn:
+            assert conn.execute("SELECT COUNT(*) FROM memos").fetchone()[0] == 0
+
+    def test_malformed_repeat_end_time_rejected(self, tmp_path):
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        with pytest.raises(ValueError, match="重复结束时间格式非法"):
+            db.add_memo(title="t", reminder_time="2026-08-18 00:00:00",
+                        repeat_type="daily", repeat_end_time="不是时间")
+
+    def test_invalid_repeat_type_rejected(self, tmp_path):
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        with pytest.raises(ValueError, match="无效的重复类型"):
+            db.add_memo(title="t", reminder_time="2026-08-18 00:00:00",
+                        repeat_type="every-second")
+
+    def test_non_numeric_repeat_interval_rejected(self, tmp_path):
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        with pytest.raises(ValueError, match="重复间隔必须是整数"):
+            db.add_memo(title="t", reminder_time="2026-08-18 00:00:00",
+                        repeat_type="custom", repeat_interval="垃圾")
+
+    def test_custom_repeat_requires_positive_interval(self, tmp_path):
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        with pytest.raises(ValueError, match="repeat_interval"):
+            db.add_memo(title="t", reminder_time="2026-08-18 00:00:00",
+                        repeat_type="custom", repeat_interval=0)
+
+    def test_numeric_string_interval_coerced(self, tmp_path):
+        """数字字符串被强转接受（WS 传 JSON 数字/字符串均安全）"""
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        mid = db.add_memo(title="t", reminder_time="2026-08-18 00:00:00",
+                          repeat_type="custom", repeat_interval="30",
+                          repeat_interval_unit="minutes")
+        assert db.get_memo(mid)["repeat_interval"] == 30
+
+    def test_add_user_task_propagates_validation(self, tmp_path):
+        """WS 路径（add_user_task 薄包装 add_memo）同样被校验拦截"""
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        with pytest.raises(ValueError, match="提醒时间格式非法"):
+            db.add_user_task(title="t", reminder_time="不是时间")
+
+
+class TestJ1DirtyDataDefense:
+    def test_mark_as_triggered_completes_malformed_one_shot(self, tmp_path):
+        """存量畸形 reminder_time 一次性任务：触发不再抛异常，正常完成"""
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        mid = _insert_memo_raw(tmp_path / "m.db", reminder_time="不是时间")
+        assert db.mark_as_triggered(mid) is None
+        assert db.get_memo(mid)["is_completed"] == 1
+
+    def test_mark_as_triggered_handles_garbage_repeat_interval(self, tmp_path):
+        """存量 custom 任务 repeat_interval 为文本：按非重复处理，不打崩事务"""
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        mid = _insert_memo_raw(tmp_path / "m.db", reminder_time="2026-08-18 00:00:00",
+                               repeat_type="custom", repeat_interval="垃圾")
+        assert db.mark_as_triggered(mid) is None
+        assert db.get_memo(mid)["is_completed"] == 1
+
+    def test_malformed_repeat_end_time_treated_as_no_end(self, tmp_path):
+        """存量畸形 repeat_end_time：解析失败视为无结束时间，不抛异常"""
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        mid = _insert_memo_raw(tmp_path / "m.db", reminder_time="2026-08-19 00:00:00",
+                               repeat_type="daily", repeat_end_time="不是时间")
+        memo = db.get_memo(mid)
+        from datetime import datetime
+        base = datetime.strptime("2026-08-19 00:00:00", "%Y-%m-%d %H:%M:%S")
+        assert db._should_end_repeat(memo, base) is False
+        assert db._calculate_next_reminder(memo, base) is not None
+
+    def test_pending_tasks_for_user_malformed_time_overdue(self, tmp_path):
+        """展示路径：畸形 reminder_time 行按到期展示，不再打崩握手"""
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        mid = _insert_memo_raw(tmp_path / "m.db", reminder_time="不是时间")
+        tasks = db.get_pending_tasks_for_user()
+        row = next(t for t in tasks if t["id"] == mid)
+        assert row["is_overdue"] is True
+
+
+class TestJ1WsAndScheduler:
+    def test_ws_task_add_rejects_malformed_repeat_end(self, tmp_path):
+        """WS task add 传畸形 repeat_end_time：友好错误且不入库"""
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        ai_manager = mock.MagicMock()
+        ai_manager.memo_db = db
+        handler = aibox.WebSocketHandler(ai_manager)
+        try:
+            ws = mock.AsyncMock()
+            asyncio.run(handler.handle_task_message(ws, {
+                "type": "task", "action": "add", "title": "t", "delay": 5,
+                "repeat_type": "daily", "repeat_end_time": "不是时间"}))
+            sent = json.loads(ws.send.call_args[0][0])
+            assert sent["type"] == "error"
+            assert "任务添加失败" in sent["content"]
+            with sqlite3.connect(str(tmp_path / "m.db")) as conn:
+                assert conn.execute("SELECT COUNT(*) FROM memos").fetchone()[0] == 0
+        finally:
+            handler.shutdown()
+
+    def test_scheduler_precheck_malformed_time_executes_not_loops(self, tmp_path):
+        """调度器预检：畸形 reminder_time 按到期执行并标记触发（不再热循环）"""
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        mid = _insert_memo_raw(tmp_path / "m.db", reminder_time="不是时间")
+        loop = asyncio.new_event_loop()
+        executed = {"n": 0}
+        try:
+            scheduler = aibox.TaskScheduler(loop=loop, logger=None)
+            scheduler.broadcast_enabled = False
+
+            async def fake_execute(memo, memo_db):
+                executed["n"] += 1
+                return "ok"
+
+            scheduler.execute_task_as_conversation = fake_execute
+            loop.run_until_complete(scheduler.check_and_execute_tasks(db))
+        finally:
+            loop.close()
+        assert executed["n"] == 1
+        assert db.get_memo(mid)["is_completed"] == 1
+
+
+# ==================== J5 波次 4：原子写 + 损坏备份 ====================
+
+class TestJ5AtomicWrites:
+    def test_save_config_atomic_no_tmp_leftover(self, tmp_path):
+        """_save_config 原子写：无 .aibox_tmp_ 残留且 JSON 合法"""
+        cm = ConfigManager()
+        cm._config_path = str(tmp_path / "config.json")
+        cm._config = {"api": {"deepseek_model": "m"}, "models": {}}
+        assert cm._save_config() is True
+        import json as _json
+        data = _json.loads((tmp_path / "config.json").read_text(encoding="utf-8"))
+        assert data["api"]["deepseek_model"] == "m"
+        assert list(tmp_path.glob(".aibox_tmp_*")) == []
+
+    def test_corrupted_config_backed_up_before_fallback(self, tmp_path):
+        """损坏配置加载：备份 .corrupt.* 文件后回退默认，原内容不丢"""
+        cfg_file = tmp_path / "config.json"
+        cfg_file.write_text('{"api": {"broken": ', encoding="utf-8")  # 半截 JSON
+        ConfigManager._instance = None
+        ConfigManager._config = None
+        ConfigManager._config_path = None
+        try:
+            with mock.patch.dict(os.environ, {"AI_CONFIG_PATH": str(cfg_file)}):
+                cm = ConfigManager()
+            assert cm._config is not None
+            backups = list(tmp_path.glob("config.json.corrupt.*"))
+            assert len(backups) == 1
+            assert backups[0].read_text(encoding="utf-8") == '{"api": {"broken": '
+        finally:
+            ConfigManager._instance = None
+            ConfigManager._config = None
+            ConfigManager._config_path = None
+
+    def test_prompt_write_atomic(self, tmp_path):
+        """prompt 更新原子写：内容生效且无临时文件残留"""
+        from subsystems.prompt_manager import PromptManager
+        PromptManager._instance = None
+        PromptManager._prompts = []
+        PromptManager._prompts_dir = None
+        prompts_dir = tmp_path / "prompts"
+        prompts_dir.mkdir()
+        try:
+            with mock.patch.object(ConfigManager, "get",
+                                   return_value=str(prompts_dir)):
+                pm = PromptManager()
+                assert pm.update_identity("新身份内容") is True
+                identity = prompts_dir / "00_IDENTITY.md"
+                assert "新身份内容" in identity.read_text(encoding="utf-8")
+            assert list(tmp_path.glob(".aibox_tmp_*")) == []
+        finally:
+            PromptManager._instance = None
+            PromptManager._prompts = []
+            PromptManager._prompts_dir = None
+
+
+# ==================== J7 波次 4：broadcast 超时回收 ====================
+
+class TestJ7BroadcastTimeout:
+    def test_stuck_client_timed_out_and_unregistered(self):
+        """半开 TCP 僵死客户端：broadcast 在超时内返回并回收该连接"""
+        from aibox import WebSocketHandler
+        handler = WebSocketHandler(ai_manager=mock.MagicMock())
+        handler.broadcast_send_timeout = 0.1
+        try:
+            ws = mock.AsyncMock()
+
+            async def stuck_send(*args, **kwargs):
+                await asyncio.sleep(30)
+
+            ws.send.side_effect = stuck_send
+            handler.connected_clients.add(ws)
+            asyncio.run(handler.broadcast({"type": "ping"}))
+            assert ws not in handler.connected_clients
+        finally:
+            handler.shutdown()
+
+    def test_healthy_client_stays_connected(self):
+        """正常客户端：发送成功且不被回收"""
+        from aibox import WebSocketHandler
+        handler = WebSocketHandler(ai_manager=mock.MagicMock())
+        handler.broadcast_send_timeout = 1.0
+        try:
+            ws = mock.AsyncMock()
+            handler.connected_clients.add(ws)
+            asyncio.run(handler.broadcast({"type": "ping"}))
+            assert ws in handler.connected_clients
+            assert ws.send.called
+        finally:
+            handler.shutdown()
+
+
+# ==================== J9 波次 5：MemoDatabase 连接层 ====================
+
+class TestJ9MemoDbConnect:
+    def test_wal_enabled_after_init(self, tmp_path):
+        """WAL 显式设置——不再依赖与 MemoryDatabase 的创建顺序"""
+        MemoDatabase(db_path=str(tmp_path / "m.db"))
+        with sqlite3.connect(str(tmp_path / "m.db")) as conn:
+            mode = conn.execute("PRAGMA journal_mode").fetchone()[0]
+        assert mode == "wal"
+
+    def test_connection_factory_sets_busy_timeout(self, tmp_path):
+        """统一连接工厂：busy_timeout 覆盖全部写路径"""
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        conn = db._connect()
+        try:
+            assert conn.execute("PRAGMA busy_timeout").fetchone()[0] == 10000
+        finally:
+            conn.close()
+
+
+# ==================== J10 波次 5：memo 批量删除 ====================
+
+class TestJ10BatchDelete:
+    def test_batch_delete_via_memo_tool(self, tmp_path):
+        """schema 声明的 memo_ids 批量删除真正生效（此前静默忽略）"""
+        from tools.db_tools import MemoTool
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        ids = [db.add_memo(title=f"任务{i}",
+                           reminder_time="2026-08-18 00:00:00") for i in range(3)]
+        tool = MemoTool(db)
+        r = tool.execute(action="delete", confirm=True, memo_ids=ids)
+        assert "3/3" in r
+        with sqlite3.connect(str(tmp_path / "m.db")) as conn:
+            assert conn.execute("SELECT COUNT(*) FROM memos").fetchone()[0] == 0
+
+    def test_batch_delete_requires_list(self, tmp_path):
+        from tools.db_tools import MemoTool
+        db = MemoDatabase(db_path=str(tmp_path / "m.db"))
+        tool = MemoTool(db)
+        r = tool.execute(action="delete", confirm=True, memo_ids="1")
+        assert "列表" in r
+
+
+# ==================== J15 波次 5：未知 task action ====================
+
+class TestJ15UnknownTaskAction:
+    def test_unknown_action_returns_error(self):
+        """未知 task action 明确报错（此前静默吞掉）"""
+        from aibox import WebSocketHandler
+        handler = WebSocketHandler(ai_manager=mock.MagicMock())
+        try:
+            ws = mock.AsyncMock()
+            asyncio.run(handler.handle_task_message(ws, {"action": "explode"}))
+            sent = json.loads(ws.send.call_args[0][0])
+            assert sent["type"] == "error"
+            assert "未知的任务操作" in sent["content"]
+        finally:
+            handler.shutdown()
+
+
+# ==================== J16 波次 5：skill_manager ====================
+
+class TestJ16SkillManager:
+    def test_markdown_skipped_when_executable_same_name(self, tmp_path, monkeypatch):
+        """同名键冲突：可执行技能确定性优先（此前由 listdir 顺序决定）"""
+        from common import constants
+        from subsystems.skill_manager import SkillManager
+        skills_dir = tmp_path / "skills"
+        skills_dir.mkdir()
+        exe = skills_dir / "foo"
+        exe.write_text("#!/bin/sh\necho '可执行技能简介'", encoding="utf-8")
+        exe.chmod(0o755)
+        (skills_dir / "foo.md").write_text("# Markdown 简介\n内容", encoding="utf-8")
+        monkeypatch.setattr(type(constants), "SKILLS_DIR",
+                            property(lambda self: str(skills_dir)))
+        sm = SkillManager()
+        assert "foo" in sm.skills
+        assert sm.skills["foo"]["is_executable"] is True
+
+    def test_help_output_truncated(self, tmp_path, monkeypatch):
+        """--help 输出截断（内容进系统提示词，防撑爆上下文）"""
+        from common import constants
+        from subsystems.skill_manager import SkillManager
+        skills_dir = tmp_path / "skills"
+        skills_dir.mkdir()
+        exe = skills_dir / "big"
+        exe.write_text("#!/bin/sh\necho '" + "x" * 5000 + "'", encoding="utf-8")
+        exe.chmod(0o755)
+        monkeypatch.setattr(type(constants), "SKILLS_DIR",
+                            property(lambda self: str(skills_dir)))
+        sm = SkillManager()
+        assert len(sm.skills["big"]["content"]) <= SkillManager.MAX_HELP_LENGTH + 20
diff --git a/aibox/tests/test_model_config.py b/aibox/tests/test_model_config.py
index 7132834..1484caf 100644
--- a/aibox/tests/test_model_config.py
+++ b/aibox/tests/test_model_config.py
@@ -192,7 +192,9 @@ class TestTestProfile:
 class TestSaveFailure:
     def test_add_reports_save_failure(self, tmp_path):
         cm = _cfg(tmp_path, {})
-        with mock.patch("builtins.open", side_effect=PermissionError("disk ro")):
+        # J5：写路径改为原子写，磁盘失败经原子写函数模拟
+        with mock.patch("common.config.atomic_write_text",
+                        side_effect=PermissionError("disk ro")):
             msgs = model_config.add_profile(
                 cm, "a", "https://x/v1", "m1", api_key_env="K")
         assert any("保存失败" in m for m in msgs)
diff --git a/aibox/tests/test_subagent_max_turns.py b/aibox/tests/test_subagent_max_turns.py
new file mode 100644
index 0000000..162cea7
--- /dev/null
+++ b/aibox/tests/test_subagent_max_turns.py
@@ -0,0 +1,178 @@
+"""run_full_subagent 最大轮次（max_turns）行为回归测试（2026-08-19）
+
+覆盖 aibox.py run_full_subagent 的轮次限制链路（think_with_limit 补丁）：
+  - 超限拦截：任务轮 LLM 调用被限制在 max_turns 次，超限递归返回哨兵串
+  - 哨兵串文本契约（"已达到最大对话轮次，任务结束。"）
+  - 收尾报告：超限/正常结束均由 original_think 绕过轮次限制生成，作为返回值
+  - 入参钳制：max_turns 为 0/None 回退默认 10，负数钳制下限 1
+  - 超限不置 conversation_active=False（收尾保留完整上下文，aibox.py 763-765 注释）
+  - 收尾失败兜底链：最后一条 assistant 消息 → "子代理未产生有效对话内容。"
+  - SubAgentTool.execute 的 max_turns 参数透传（默认 10）
+"""
+
+import sys
+import threading
+import types
+from unittest import mock
+
+import pytest
+
+# ---- 环境桩：websockets 未安装时保证 import aibox.py 不失败 ----
+if "websockets" not in sys.modules:
+    sys.modules["websockets"] = types.ModuleType("websockets")
+
+from aibox import SubAgentTool, run_full_subagent  # noqa: E402
+
+# 与 aibox.py think_with_limit 超限返回值一致的哨兵串（文本契约）
+SENTINEL = "已达到最大对话轮次，任务结束。"
+WRAP_UP_MARKER = "【收尾】"
+
+
+def _make_fake_chat(task_rounds=999, final_answer=None, wrap_report="收尾报告"):
+    """模拟 DeepSeekChat：think_and_respond 的"原始实现"。
+
+    每次任务轮调用递归一次（模拟 aibox.py:1801 工具调用后递归继续，
+    经由补丁后的 think_and_respond 走轮次计数）；累计 task_rounds 轮后
+    若给出 final_answer 则正常结束（模拟 AI 返回纯文本）。task_rounds
+    设为大数且不给 final_answer 时永不自行收敛——只有轮次限制能终止它。
+    检测到收尾 prompt（含【收尾】标记）时返回 wrap_report。
+    """
+    fake = mock.MagicMock()
+    state = {"n": 0, "task_inputs": [], "recurse_returns": []}
+
+    def original_think(input_text, output_callback=None, is_continuation=False):
+        if WRAP_UP_MARKER in input_text:
+            return wrap_report
+        state["task_inputs"].append(input_text)
+        state["n"] += 1
+        if final_answer is not None and state["n"] >= task_rounds:
+            return final_answer
+        ret = fake.think_and_respond("请基于以上工具执行结果继续回答。",
+                                     output_callback, is_continuation=True)
+        state["recurse_returns"].append(ret)
+        return ret
+
+    fake.think_and_respond = original_think
+    fake.stats = {}
+    fake.messages = []
+    fake._cancel_event = threading.Event()
+    fake.conversation_active = True
+    fake._state = state
+    return fake
+
+
+def _run(fake, **kwargs):
+    with mock.patch("aibox.DeepSeekChat", return_value=fake), \
+         mock.patch("aibox.create_llm_client"), \
+         mock.patch("aibox.SubprocessCommandExecutor"):
+        return run_full_subagent("角色", "任务", None, **kwargs)
+
+
+class TestMaxTurnsCutoff:
+    def test_task_turns_capped_at_max_turns(self):
+        """永不收敛的任务：任务轮 LLM 调用恰为 max_turns 次，第 max_turns+1 次被拦截"""
+        fake = _make_fake_chat(task_rounds=999)
+        result = _run(fake, max_turns=3)
+        assert len(fake._state["task_inputs"]) == 3
+        assert result == "收尾报告"
+
+    def test_overrun_recursion_returns_sentinel(self):
+        """超限那轮递归返回哨兵串（不调 LLM），并沿递归链上抛"""
+        fake = _make_fake_chat(task_rounds=999)
+        _run(fake, max_turns=3)
+        assert fake._state["recurse_returns"]
+        assert all(r == SENTINEL for r in fake._state["recurse_returns"])
+
+    def test_wrap_up_runs_after_overrun(self):
+        """超限后收尾报告仍被请求（original_think 绕过轮次限制），且为最终返回值"""
+        fake = _make_fake_chat(task_rounds=999, wrap_report="最终报告")
+        result = _run(fake, max_turns=2)
+        assert result == "最终报告"
+
+    def test_max_turns_zero_clamped_to_default(self):
+        """max_turns=0 → 回退默认 10（对齐 max_tokens 的 0/空回退惯例）"""
+        fake = _make_fake_chat(task_rounds=999)
+        _run(fake, max_turns=0)
+        assert len(fake._state["task_inputs"]) == 10
+
+    def test_negative_max_turns_clamped_to_one(self):
+        """max_turns 为负 → 钳制下限 1（至少执行一个任务轮，不再首轮即拦截）"""
+        fake = _make_fake_chat(task_rounds=999)
+        _run(fake, max_turns=-3)
+        assert len(fake._state["task_inputs"]) == 1
+
+    def test_max_turns_none_falls_back_to_default(self):
+        """max_turns=None → 默认 10"""
+        fake = _make_fake_chat(task_rounds=999)
+        _run(fake, max_turns=None)
+        assert len(fake._state["task_inputs"]) == 10
+
+    def test_overrun_does_not_deactivate_conversation(self):
+        """超限不置 conversation_active=False（否则收尾前上下文被重置清空）"""
+        fake = _make_fake_chat(task_rounds=999)
+        _run(fake, max_turns=2)
+        assert fake.conversation_active is True
+
+
+class TestNormalCompletion:
+    def test_result_is_wrap_up_report_not_final_answer(self):
+        """正常收敛时返回值同样是收尾报告（最终回答不作为工具结果返回）"""
+        fake = _make_fake_chat(task_rounds=2, final_answer="最终答案")
+        result = _run(fake, max_turns=10)
+        assert len(fake._state["task_inputs"]) == 2
+        # 第一轮递归的返回值即第 2 轮的最终回答（无哨兵串、无超限拦截）
+        assert fake._state["recurse_returns"] == ["最终答案"]
+        assert result == "收尾报告"
+
+    def test_sentinel_never_appears_when_within_limit(self):
+        """未达上限：任何递归都不返回哨兵串"""
+        fake = _make_fake_chat(task_rounds=3, final_answer="最终答案")
+        _run(fake, max_turns=10)
+        assert SENTINEL not in fake._state["recurse_returns"]
+
+
+class TestWrapUpFallback:
+    def test_empty_wrap_up_falls_back_to_last_assistant_message(self):
+        """收尾返回空 → 兜底取最后一条有内容的 assistant 消息"""
+        fake = _make_fake_chat(task_rounds=1, final_answer="x", wrap_report="")
+        fake.messages = [
+            {"role": "user", "content": "hi"},
+            {"role": "assistant", "content": "中间回答"},
+            {"role": "assistant", "content": ""},
+            {"role": "assistant", "content": "最终回答"},
+        ]
+        assert _run(fake, max_turns=10) == "【子代理最终回答】\n最终回答"
+
+    def test_no_wrap_up_and_no_messages(self):
+        """收尾为空且无任何 assistant 消息 → 固定兜底文案"""
+        fake = _make_fake_chat(task_rounds=1, final_answer="x", wrap_report="")
+        assert _run(fake, max_turns=10) == "子代理未产生有效对话内容。"
+
+    def test_wrap_up_exception_falls_back(self):
+        """收尾调用抛异常 → 不中断，走 assistant 消息兜底"""
+        fake = _make_fake_chat(task_rounds=1, final_answer="x")
+        original = fake.think_and_respond
+
+        def boom_on_wrap_up(input_text, output_callback=None, is_continuation=False):
+            if WRAP_UP_MARKER in input_text:
+                raise RuntimeError("wrap-up boom")
+            return original(input_text, output_callback, is_continuation)
+
+        fake.think_and_respond = boom_on_wrap_up
+        fake.messages = [{"role": "assistant", "content": "最终回答"}]
+        assert _run(fake, max_turns=10) == "【子代理最终回答】\n最终回答"
+
+
+class TestSubAgentToolMaxTurns:
+    def test_max_turns_passed_through(self):
+        """SubAgentTool.execute 的 max_turns 透传给 run_full_subagent"""
+        tool = SubAgentTool(logger=None)
+        with mock.patch("aibox.run_full_subagent", return_value="ok") as m:
+            tool.execute(role="r", task="t", max_turns=4)
+        assert m.call_args.kwargs["max_turns"] == 4
+
+    def test_max_turns_default_is_10(self):
+        tool = SubAgentTool(logger=None)
+        with mock.patch("aibox.run_full_subagent", return_value="ok") as m:
+            tool.execute(role="r", task="t")
+        assert m.call_args.kwargs["max_turns"] == 10
diff --git a/aibox/tools/db_tools.py b/aibox/tools/db_tools.py
index 5fc71e2..4f854c9 100644
--- a/aibox/tools/db_tools.py
+++ b/aibox/tools/db_tools.py
@@ -745,11 +745,20 @@ class MemoTool(Tool):
             return f"❌ 无法完成任务 #{memo_id}"
 
     def _delete_memo(self, kwargs: Dict) -> str:
-        """删除任务"""
+        """删除任务（单条 memo_id 或批量 memo_ids）"""
         confirm = kwargs.get("confirm", False)
         if not confirm:
             return "❌ 需要设置 confirm=True 来确认删除操作"
 
+        memo_ids = kwargs.get("memo_ids")
+        if memo_ids:
+            # J10（审计 2026-08-19）：schema 声明了 memo_ids 参数却从未实现，
+            # 批量请求此前被静默忽略
+            if not isinstance(memo_ids, (list, tuple)):
+                return "❌ memo_ids 必须是列表"
+            deleted = sum(1 for mid in memo_ids if self.memo_db.delete_memo(mid))
+            return self.format_result(True, f"已删除 {deleted}/{len(memo_ids)} 条任务")
+
         memo_id = kwargs.get("memo_id")
         if memo_id:
             # M5：真实物理删除（此前调 complete_memo 只标记完成，行不删除，
@@ -759,7 +768,7 @@ class MemoTool(Tool):
             else:
                 return f"❌ 无法删除任务 #{memo_id}"
         else:
-            return "❌ 需要提供 memo_id"
+            return "❌ 需要提供 memo_id 或 memo_ids"
 
     def _search_memos(self, kwargs: Dict) -> str:
         """搜索任务"""
diff --git a/aibox/voice_client.py b/aibox/voice_client.py
index aa4ec11..1dee5fd 100644
--- a/aibox/voice_client.py
+++ b/aibox/voice_client.py
@@ -181,6 +181,9 @@ class WebSocketClient:
             self.connected = False
             print(f"\n{Colors.ERROR}❌ 连接已断开{Colors.RESET}")
         except Exception as e:
+            # J14：异常退出同样标记断开（此前 connected 恒 True，用户继续
+            # "成功"发送但永远收不到回复，成僵尸连接）
+            self.connected = False
             print(f"\n{Colors.ERROR}❌ 接收消息错误: {e}{Colors.RESET}")
     
     async def handle_message(self, data: dict, tts: TextToSpeech):
@@ -266,12 +269,13 @@ class WebSocketClient:
                                    tts: TextToSpeech = None, task_info: dict = None):
         if msg_type == 'chat':
             stream = self.streaming_messages['chat']
-            stream.add_chunk(content)
-            
+            # J14（审计 2026-08-19）：前缀判断必须在 add_chunk 之前——
+            # add_chunk 会置 is_active=True，原顺序使 "AI助手:" 前缀永不打印
             if not stream.is_active:
                 print(f"\n{Colors.AI}🤖 AI助手: ", end='', flush=True)
                 stream.is_active = True
-            
+
+            stream.add_chunk(content)
             print(content, end='', flush=True)
         
         elif msg_type == 'task' and task_info:
@@ -428,6 +432,7 @@ class VoiceInterface:
             return None
         
         print(f"{Colors.INFO}🎤 正在听... (按 Ctrl+C 取消){Colors.RESET}")
+        temp_file = None  # J14：录音临时文件，任何异常路径统一清理
         
         try:
             if self.use_arecord:
@@ -506,6 +511,13 @@ class VoiceInterface:
             return None
         except Exception as e:
             print(f"{Colors.ERROR}❌ 语音输入错误: {e}{Colors.RESET}")
+            # J14：录音临时文件（含用户语音）任何异常路径都清理——
+            # 此前 wave.open/whisper 解析失败、arecord 超时等滞留 /tmp
+            if temp_file and os.path.exists(temp_file):
+                try:
+                    os.unlink(temp_file)
+                except OSError:
+                    pass
             return None
     
     async def handle_command(self, command: str):