feat: 更新项目配置，升级Java版本至21，添加Lombok注解处理器，优化设备状态解析和任务更新逻辑

device_cleanup_test.sql

@@ -0,0 +1,43 @@
+-- 设备状态变更记录清理测试脚本
+-- 用于验证24小时清理功能
+
+-- 1. 检查表结构
+SELECT 'Table Structure:' as info;
+DESC device_status_transition;
+
+-- 2. 查看当前记录数
+SELECT 'Current Records Count:' as info;
+SELECT COUNT(*) as total_records FROM device_status_transition;
+
+-- 3. 查看24小时前的记录数（将被清理的记录）
+SELECT '24+ Hours Old Records (to be cleaned):' as info;
+SELECT COUNT(*) as old_records 
+FROM device_status_transition 
+WHERE created_at < DATE_SUB(NOW(), INTERVAL 24 HOUR);
+
+-- 4. 查看最近24小时的记录数（将被保留的记录）
+SELECT 'Recent 24 Hours Records (to be kept):' as info;
+SELECT COUNT(*) as recent_records 
+FROM device_status_transition 
+WHERE created_at >= DATE_SUB(NOW(), INTERVAL 24 HOUR);
+
+-- 5. 查看记录的时间分布
+SELECT 'Records Distribution:' as info;
+SELECT 
+    DATE(created_at) as date,
+    COUNT(*) as count
+FROM device_status_transition 
+GROUP BY DATE(created_at)
+ORDER BY date DESC
+LIMIT 10;
+
+-- 6. 预览将被删除的记录（最多显示5条）
+SELECT 'Sample Records to be Deleted:' as info;
+SELECT device_id, prev_status, new_status, created_at
+FROM device_status_transition 
+WHERE created_at < DATE_SUB(NOW(), INTERVAL 24 HOUR)
+ORDER BY created_at DESC
+LIMIT 5;
+
+-- 测试删除语句（注释掉，仅用于验证语法）
+-- DELETE FROM device_status_transition WHERE created_at < DATE_SUB(NOW(), INTERVAL 24 HOUR);