fix: 设备异常状态清除（清除异常/一键清除，检查与更新原子化防竞态）

templates/admin/monitor.html

@@ -289,10 +289,11 @@ select.form-control{cursor:pointer}
 
   <div class="section-title">设备列表</div>
   <div class="toolbar">
-    <button class="btn btn-danger" onclick="apiAction('/api/stop_all')">停止全部</button>
-    <button class="btn btn-danger" id="btn-stop-selected" onclick="stopSelectedDevices()" title="停止所有勾选的运行中设备">停止选中</button>
-    <button class="btn" onclick="apiAction('/api/release')">强制释放占用</button>
-    <button class="btn btn-primary" id="btn-scan-fg" onclick="scanForeground()">扫描前台App</button>
+    <button class="btn btn-danger" onclick="apiAction('/api/stop_all')" data-perm="devices">停止全部</button>
+    <button class="btn btn-danger" id="btn-stop-selected" onclick="stopSelectedDevices()" title="停止所有勾选的运行中设备" data-perm="devices">停止选中</button>
+    <button class="btn btn-danger" onclick="clearAllErrors()" title="清除所有异常/失败设备的错误状态（运行中/等待重试的跳过）" data-perm="devices">清除全部异常</button>
+    <button class="btn" onclick="apiAction('/api/release')" data-perm="devices">强制释放占用</button>
+    <button class="btn btn-primary" id="btn-scan-fg" onclick="scanForeground()" data-perm="devices">扫描前台App</button>
     <button class="btn" onclick="loadMonitor()">刷新</button>
     <input class="form-control list-search" id="search-devices" placeholder="搜索设备/型号/App/任务...">
     <span class="hint"><span id="fg-status"></span> · 每 5 秒自动刷新 · <span id="srvTime"></span> · <span id="sel-count">未选中</span></span>