feat(ops): 工单取消后语音播报"当前工单已取消"

新增 VoiceTemplate.ORDER_CANCELLED 常量，handleCancelled 在自动调度
下一个任务之前先通过 TTS 队列播报取消通知，与完成流程保持一致。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

viewsh-module-ops/viewsh-module-environment-biz/src/main/java/com/viewsh/module/ops/environment/constants/CleanNotificationConstants.java

@@ -123,6 +123,13 @@ public class CleanNotificationConstants {
          */
         public static final String ORDER_COMPLETED = "太棒啦，工单已完成";
 
+        // ==================== 工单取消播报 ====================
+
+        /**
+         * 工单取消播报
+         */
+        public static final String ORDER_CANCELLED = "当前工单已取消";
+
         // ==================== 待办增加播报 ====================
 
         /**

viewsh-module-ops/viewsh-module-environment-biz/src/main/java/com/viewsh/module/ops/environment/integration/listener/CleanOrderEventListener.java

@@ -404,7 +404,10 @@ public class CleanOrderEventListener {
         updateExt.setCompletedTime(LocalDateTime.now());
         cleanExtMapper.insertOnDuplicateKeyUpdate(updateExt);
 
-        // 2. 业务日志由 OrderLifecycleManagerImpl.cancelOrder() 统一记录，此处不重复
+        // 2. 语音播报通知保洁员工单已取消
+        if (deviceId != null) {
+            playVoice(deviceId, CleanNotificationConstants.VoiceTemplate.ORDER_CANCELLED, orderId);
+        }
 
         // 3. 自动调度下一个等待任务（如果有 assignee）
         if (deviceId != null) {