feat: AI 目标设备必选 + 设备任务占用锁——①前端新增「🎯 目标设备」选择器（在线设备含型号，任务运行中的设备禁选），发送必须选定设备，AI 只操作你指定的设备；②/api/agent/run 校验：serial 不在池/离线/任务 running-connecting → 拒绝（409 提示任务名）；③MCP 11 个写工具加 busy 锁（_ensure_device_free，5s 缓存）：任务运行中的设备 AI 一律拒绝，AI 不与任务抢设备（外部 MCP 客户端同样受保护）；④运行状态端点 GET /api/agent/run + 前端 8s 轮询：多人/多窗口能看到运行中任务（发起时间/任务/设备）并可停止（stop 加确认）；未选设备直接 400 引导请选择设备，去掉模型自己乱挑设备的行为

mcp_server/mcp_server.py

@@ -52,6 +52,32 @@ def _check_write():
         raise PlatformError("write_disabled", "写操作未启用（MCP_ALLOW_WRITE=1 开启）")
 
 
+# 设备任务占用锁：serial -> (ts, worker_status, task_job)。AI 写操作前检查，
+# 任务 running/connecting 的设备拒绝操作（AI 不与任务抢设备）。5s 缓存。
+_busy_cache = {}
+
+
+def _ensure_device_free(serial):
+    """写操作前检查设备是否有任务在跑（worker running/connecting → 拒绝）。"""
+    import time
+    now = time.time()
+    c = _busy_cache.get(serial)
+    if not c or now - c[0] > 5:
+        try:
+            devs = platform().list_devices()
+            info = next((d for d in devs if d.get("serial") == serial), {})
+            c = (now, info.get("worker_status") or "idle",
+                 info.get("task_job") or "")
+            _busy_cache[serial] = c
+        except Exception:
+            return  # 状态查询失败不阻塞（操作失败会另行报错）
+    if c[1] in ("running", "connecting"):
+        raise PlatformError(
+            "device_busy",
+            f"设备正在执行任务「{c[2] or '未知'}」——AI 不与任务抢设备，"
+            f"任务结束后才能操作（可在平台任务页先停止任务）")
+
+
 def _to_native(serial, x, y):
     """截图坐标 → 设备原生坐标（按最近一次截图的比例换算）。"""
     c = _coord.get(serial)
@@ -138,6 +164,7 @@ def de_tap(serial: str, x: int, y: int) -> dict:
     try:
         _check_write()
         serial = _check_serial(serial)
+        _ensure_device_free(serial)
         if x < 0 or y < 0:
             raise PlatformError("invalid_param", "坐标不能为负")
         nx, ny = _to_native(serial, x, y)
@@ -160,6 +187,7 @@ def de_swipe(serial: str, x1: int, y1: int, x2: int, y2: int,
     try:
         _check_write()
         serial = _check_serial(serial)
+        _ensure_device_free(serial)
         nx1, ny1 = _to_native(serial, x1, y1)
         nx2, ny2 = _to_native(serial, x2, y2)
         platform().swipe(serial, nx1, ny1, nx2, ny2, duration)
@@ -217,6 +245,7 @@ def de_tap_element(serial: str, by: str, value: str, index: int = 1) -> dict:
     try:
         _check_write()
         serial = _check_serial(serial)
+        _ensure_device_free(serial)
         if by not in ("text", "id", "desc", "text_contains", "desc_contains"):
             raise PlatformError("invalid_param",
                                 "by 可选 text/id/desc/text_contains/desc_contains")
@@ -270,6 +299,7 @@ def de_wake(serial: str) -> dict:
     try:
         _check_write()
         serial = _check_serial(serial)
+        _ensure_device_free(serial)
         platform().wake(serial)
     except PlatformError as e:
         return _err(e)
@@ -283,6 +313,7 @@ def de_press_key(serial: str, key: str) -> dict:
     try:
         _check_write()
         serial = _check_serial(serial)
+        _ensure_device_free(serial)
         if key not in _KEYS:
             raise PlatformError("invalid_param", f"不支持的按键: {key}（可选 {_KEYS}）")
         platform().press_key(serial, key)
@@ -299,6 +330,7 @@ def de_open_app(serial: str, package: str) -> dict:
     try:
         _check_write()
         serial = _check_serial(serial)
+        _ensure_device_free(serial)
         if not package:
             raise PlatformError("invalid_param", "缺少包名")
         from mcp_server import direct_ops
@@ -317,6 +349,7 @@ def de_stop_app(serial: str, package: str) -> dict:
     try:
         _check_write()
         serial = _check_serial(serial)
+        _ensure_device_free(serial)
         if not package:
             raise PlatformError("invalid_param", "缺少包名")
         from mcp_server import direct_ops
@@ -350,6 +383,7 @@ def de_type_text(serial: str, text: str) -> dict:
     try:
         _check_write()
         serial = _check_serial(serial)
+        _ensure_device_free(serial)
         if not text:
             raise PlatformError("invalid_param", "内容为空")
         from mcp_server import direct_ops
@@ -370,6 +404,7 @@ def de_set_clipboard(serial: str, text: str) -> dict:
     try:
         _check_write()
         serial = _check_serial(serial)
+        _ensure_device_free(serial)
         if not text:
             raise PlatformError("invalid_param", "内容为空")
         from mcp_server import direct_ops
@@ -390,6 +425,7 @@ def de_sleep(serial: str) -> dict:
     try:
         _check_write()
         serial = _check_serial(serial)
+        _ensure_device_free(serial)
         platform().sleep(serial)
     except PlatformError as e:
         return _err(e)
@@ -429,6 +465,7 @@ def de_tap_text(serial: str, text: str) -> dict:
     try:
         _check_write()
         serial = _check_serial(serial)
+        _ensure_device_free(serial)
         if not text or len(text) > 100:
             raise PlatformError("invalid_param", "text 不能为空且 ≤100 字符")
         res = platform().tap_text(serial, text)

static/admin/agent.js

@@ -4,6 +4,7 @@ let _agentStream = null;      // EventSource
 let _agentCfgLoaded = false;
 
 // ================== 初始化 ==================
+let _agentDefaultSerial = '';
 function initAgentChat(){
   if(_agentCfgLoaded)return;
   _agentCfgLoaded = true;
@@ -12,10 +13,12 @@ function initAgentChat(){
   if(chat && !chat.children.length){
     chat.innerHTML = '<div class="agent-empty">👋 给 AI 下达指令，它将通过截图观察手机并执行操作。<br>'
       + '例如：「打开抖音搜索奚学东，告诉我第一个视频的标题」<br>'
-      + '点击右上角 ⚙ 配置模型与 API Key。</div>';
+      + '先选「🎯 目标设备」（AI 只操作你选定的设备），点击右上角 ⚙ 配置模型与 API Key。</div>';
   }
   bindChatScroll();
   loadLiveDevices();
+  loadAgentTargetDevices();
+  startRunPoll();
   // 输入框快捷键
   const inp = document.getElementById('agent-input');
   inp.addEventListener('keydown', ev=>{
@@ -32,6 +35,58 @@ function loadAgentConfig(){
     if(!r||!r.ok)return;
     const tag = document.getElementById('agent-model-tag');
     if(tag && r.model) tag.textContent = r.model;
+    _agentDefaultSerial = r.default_serial || '';
+  });
+}
+
+// ================== 目标设备选择（AI 只操作选定设备） ==================
+function loadAgentTargetDevices(){
+  apiGet('/api/agent/devices').then(r=>{
+    if(!r||!r.ok)return;
+    const sel = document.getElementById('agent-target-select');
+    if(!sel)return;
+    const cur = sel.value;
+    const devs = (r.devices||[]).filter(x=>x.online);
+    sel.innerHTML = '<option value="">请选择设备（AI 只操作选定设备）…</option>'
+      + devs.map(d=>{
+          const label = d.serial + (d.model ? ' · ' + d.model : '')
+            + (d.busy ? ' ⛔ 任务中：' + d.task_job : '');
+          return '<option value="'+esc(d.serial)+'"' + (d.busy ? ' disabled' : '')
+            + '>' + esc(label) + '</option>';
+        }).join('');
+    // 保留当前选择；否则预选配置的默认设备
+    if(cur && [...sel.options].some(o=>o.value===cur)) sel.value = cur;
+    else if(_agentDefaultSerial && [...sel.options].some(o=>o.value===_agentDefaultSerial))
+      sel.value = _agentDefaultSerial;
+    const hint = document.getElementById('agent-target-hint');
+    if(hint && sel.value) hint.textContent = '将操作：' + sel.value;
+  });
+}
+
+// ================== 跨窗口运行状态（多人/多窗口可见并可停止） ==================
+let _runPoll = null;
+function startRunPoll(){
+  if(_runPoll) return;
+  _runPoll = setInterval(pollRunState, 8000);
+}
+function pollRunState(){
+  if(_agentStream) return;   // 本窗口正在跑（事件流驱动），不轮询
+  apiGet('/api/agent/run').then(r=>{
+    if(!r||!r.ok)return;
+    const running = r.state === 'running';
+    document.getElementById('agent-running-tag').style.display = running ? 'inline' : 'none';
+    document.getElementById('btn-agent-stop').style.display = running ? 'inline-block' : 'none';
+    const hint = document.getElementById('agent-target-hint');
+    if(hint){
+      hint.textContent = running
+        ? ('⏳ 运行中' + (r.started ? ' ' + r.started + ' 起' : '')
+           + (r.serial ? ' · ' + r.serial : '')
+           + '：' + (r.prompt||'').slice(0,70))
+        : (document.getElementById('agent-target-select').value
+           ? '将操作：' + document.getElementById('agent-target-select').value : '');
+    }
+    document.getElementById('btn-agent-send').disabled = running;
+    if(!running && _agentBusy){ setRunning(false); }   // 流异常丢失时复位
   });
 }
 function openAgentConfig(){
@@ -64,6 +119,7 @@ function saveAgentConfig(){
       showToast('配置已保存','success');
       closeAgentConfig();
       loadAgentConfig();
+      loadAgentTargetDevices();
     }else showToast('保存失败: ' + ((r&&r.error)||''),'error');
   });
 }
@@ -129,6 +185,7 @@ function setRunning(on){
   document.getElementById('btn-agent-send').disabled = on;
 }
 function stopAgent(){
+  if(!confirm('确定停止当前 AI 运行任务？\n（其他人发起的任务也会被停止）')) return;
   apiPost('/api/agent/stop',{}).then(r=>{
     if(r&&r.ok) showToast('已请求停止，正在中断…','success');
     else showToast((r&&r.error)||'停止失败','error');
@@ -136,13 +193,20 @@ function stopAgent(){
 }
 function sendAgentMsg(){
   if(_agentBusy){showToast('上一轮还在运行','error');return;}
+  const sel = document.getElementById('agent-target-select');
+  const serial = sel ? sel.value : '';
+  if(!serial){
+    showToast('请先选择目标设备（AI 只操作你选定的设备；任务中的设备不可选）','error');
+    if(sel) sel.focus();
+    return;
+  }
   const inp = document.getElementById('agent-input');
   const text = inp.value.trim();
   if(!text){showToast('请输入指令','error');return;}
   inp.value = '';
   addUserMsg(text);
 
-  apiPost('/api/agent/run', {prompt: text}).then(r=>{
+  apiPost('/api/agent/run', {prompt: text, serial: serial}).then(r=>{
     if(!r||!r.ok){
       const msg = r ? (r.error||'启动失败') : '请求失败';
       const div = newAssistantMsg();

templates/admin/monitor.html

@@ -467,7 +467,6 @@ body{background:var(--bg);font-family:var(--body);color:var(--text);font-size:14
       <div class="agent-title">🤖 AI 控制台<span id="agent-model-tag" class="agent-model-tag"></span></div>
       <div class="agent-top-actions">
         <span id="agent-running-tag" class="agent-running-tag" style="display:none">● 运行中</span>
-        <button class="btn btn-xs btn-danger" id="btn-agent-stop" style="display:none" onclick="stopAgent()">■ 停止</button>
         <button class="btn btn-xs" onclick="newAgentSession()" title="清空当前对话并开启新会话">＋ 新建会话</button>
         <button class="btn btn-xs" onclick="openExpLib()" title="查看/管理自进化经验库（每日 AI 巡检建议，删除需确认）">🧠 经验库</button>
         <button class="btn btn-xs" onclick="openAgentConfig()">⚙ 配置</button>
@@ -487,13 +486,25 @@ body{background:var(--bg);font-family:var(--body);color:var(--text);font-size:14
                 onchange="watchDevice(this.value)"><option value="">选择设备观看…</option></select>
       </div>
     </div>
-    <div class="agent-inputbar">
+    <div class="agent-inputbar" style="align-items:flex-end;flex-direction:column">
+      <div style="display:flex;width:100%;gap:8px;align-items:center;margin-bottom:8px">
+        <label style="font-size:12.5px;color:#374151;font-weight:600;white-space:nowrap">🎯 目标设备</label>
+        <select id="agent-target-select" class="form-control" style="width:320px;font-family:monospace"
+                title="AI 只操作你选定的设备；有任务运行中的设备不可选">
+          <option value="">请选择设备（AI 只操作选定设备）…</option>
+        </select>
+        <span class="text-muted" id="agent-target-hint" style="font-size:11.5px"></span>
+        <span style="flex:1"></span>
+        <button class="btn btn-xs btn-danger" id="btn-agent-stop" style="display:none" onclick="stopAgent()">■ 停止</button>
+      </div>
+      <div style="display:flex;width:100%;gap:10px">
         <textarea id="agent-input" rows="2"
                   placeholder="给 AI 下达指令，例如：打开抖音搜索奚学东，把第一个视频标题告诉我…（Enter 发送，Shift+Enter 换行）"></textarea>
         <button class="btn btn-primary" id="btn-agent-send" onclick="sendAgentMsg()">发送</button>
       </div>
     </div>
   </div>
+</div>
 
 <!-- ========== 配置模态框 ========== -->
 <div id="agent-cfg-overlay" style="display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:1300;align-items:center;justify-content:center">

web/agent_api.py

@@ -498,23 +498,85 @@ def agent_run():
         return jsonify({"ok": False, "error": "请先在配置区填写 API Key"}), 400
     if not cfg.get("model"):
         return jsonify({"ok": False, "error": "请先填写模型名"}), 400
+    if not serial and not (cfg.get("default_serial") or "").strip():
+        return jsonify({"ok": False, "error": "请先选择目标设备（AI 只操作你指定的设备）"}), 400
+    # 目标设备校验：必须在池、在线、且无任务运行（AI 不与任务抢设备；
+    # MCP 层另有 busy 锁兜底外部客户端）
+    if serial:
+        try:
+            from web import context
+            devs, err = context.mgr.get_status()
+            dev = next((x for x in (devs or []) if x.get("serial") == serial), None)
+            if err or dev is None:
+                return jsonify({"ok": False, "error": f"设备 {serial} 不在设备池"}), 400
+            if not dev.get("present"):
+                return jsonify({"ok": False, "error": f"设备 {serial} 当前离线，请稍后再试"}), 400
+            if dev.get("worker_status") in ("running", "connecting"):
+                return jsonify({"ok": False, "error":
+                    f"设备 {serial} 正在执行任务「{dev.get('task_job') or ''}」——"
+                    f"AI 不与任务抢设备，任务结束后才能操作（或在任务页先停止）"}), 409
+        except Exception:
+            pass  # 状态服务异常不阻塞（MCP busy 锁兜底）
     with _lock:
         if _run["state"] == "running":
-            return jsonify({"ok": False, "error": "已有 Agent 运行中，请等待完成"}), 409
+            return jsonify({"ok": False, "error":
+                f"已有 Agent 运行中（{_run.get('prompt', '')[:40]}…），"
+                f"请等待完成或先停止"}), 409
         run_id = uuid.uuid4().hex[:8]
+        from datetime import datetime as _dt
         _run.update(id=run_id, state="running", prompt=prompt,
-                    serial=(data.get("serial") or "").strip(),
+                    serial=serial,
+                    started=_dt.now().strftime("%H:%M:%S"),
                     answer="", error="")
         # history 保留（同会话多轮对话），由前端「清空对话」调用 clear 重置
         _queues[run_id] = queue.Queue()
         _stop_events[run_id] = threading.Event()
-    _log.info(f"Agent 启动: {prompt[:60]}")
+    _log.info(f"Agent 启动: {prompt[:60]} @ {serial or 'default'}")
     threading.Thread(target=_agent_thread,
                      args=(run_id, prompt, serial, cfg),
                      daemon=True).start()
     return jsonify({"ok": True, "run_id": run_id})
 
 
+@bp.route("/api/agent/run", methods=["GET"])
+@admin_required
+def agent_run_status():
+    """当前 Agent 运行状态（多窗口/多人可见）：idle / running + 任务摘要。
+
+    前端轮询它同步「运行中」状态（换浏览器/他人启动的任务也能看到并停止）。
+    """
+    with _lock:
+        return jsonify({"ok": True,
+                        "state": _run.get("state", "idle"),
+                        "prompt": _run.get("prompt", ""),
+                        "serial": _run.get("serial", ""),
+                        "started": _run.get("started", "")})
+
+
+@bp.route("/api/agent/devices")
+@admin_required
+def agent_devices():
+    """AI 可用设备列表：在线状态 + 是否有任务运行（前端选择器 busy 设备禁选）。
+
+    worker 状态实时（内存）；busy = 任务 running/connecting。
+    """
+    try:
+        from web import context
+        devs, err = context.mgr.get_status()
+    except Exception as e:
+        return jsonify({"ok": False, "error": str(e)[:120]}), 503
+    out = []
+    for d in (devs or []):
+        busy = d.get("worker_status") in ("running", "connecting")
+        out.append({"serial": d.get("serial"),
+                    "model": d.get("model") or "",
+                    "online": bool(d.get("present")),
+                    "busy": busy,
+                    "worker_status": d.get("worker_status") or "idle",
+                    "task_job": d.get("task_job") or ""})
+    return jsonify({"ok": True, "devices": out})
+
+
 @bp.route("/api/agent/stream")
 @admin_required
 def agent_stream():