fix(task-plan): cancelPlan级联清理方案未完成任务

cfc-backend/src/main/java/com/etotem/cfc/service/TaskPlanService.java

@@ -338,6 +338,7 @@ public class TaskPlanService implements TaskPlanServiceInterface {
     /**
      * 取消计划
      */
+    @Transactional
     public boolean cancelPlan(Long id) {
         TaskPlanInstance instance = instanceMapper.selectById(id);
         if (instance == null || !"active".equals(instance.getStatus())) {
@@ -345,7 +346,23 @@ public class TaskPlanService implements TaskPlanServiceInterface {
         }
         instance.setStatus("cancelled");
         instance.setUpdatedAt(new Date());
-        return instanceMapper.updateById(instance) > 0;
+        boolean updated = instanceMapper.updateById(instance) > 0;
+
+        // 级联清理：该方案生成的未完成任务置 cancelled
+        if (updated) {
+            List<Task> pendingTasks = taskMapper.selectList(
+                    new LambdaQueryWrapper<Task>()
+                            .eq(Task::getSourceType, "plan")
+                            .eq(Task::getSourceId, id)
+                            .in(Task::getStatus, "pending", "pending_review", "locked", "in_progress"));
+            for (Task t : pendingTasks) {
+                t.setStatus("cancelled");
+                t.setUpdatedAt(new Date());
+                taskMapper.updateById(t);
+            }
+            log.info("取消方案{}并级联清理{}条未完成任务", id, pendingTasks.size());
+        }
+        return updated;
     }
 
     /**