fix(ops): code review 修复巡检模块6项问题

1. @Async 指定 ops-task-executor 线程池，避免使用默认线程池
2. 归属判定无工单/无标准时长时标记为 ATTRIBUTION_NORMAL(3)，不再静默跳过
3. 补充 completionSeconds 字段语义注释和 standardDuration 单位转换说明
4. 整改工单默认时长 30 提取为 DEFAULT_RECTIFICATION_DURATION_MINUTES 常量
5. SQL 补充 idx_generated_order_id 和 idx_template_id 索引

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

sql/mysql/aiot_ops_inspection.sql

@@ -45,7 +45,8 @@ CREATE TABLE `ops_inspection_record` (
   `tenant_id` bigint NOT NULL DEFAULT 0 COMMENT '租户编号',
   PRIMARY KEY (`id`),
   KEY `idx_area_id` (`area_id`),
-  KEY `idx_inspector_id` (`inspector_id`)
+  KEY `idx_inspector_id` (`inspector_id`),
+  KEY `idx_generated_order_id` (`generated_order_id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='巡检主记录';
 
 -- ----------------------------
@@ -65,5 +66,6 @@ CREATE TABLE `ops_inspection_record_item` (
   `deleted` bit(1) NOT NULL DEFAULT b'0' COMMENT '是否删除',
   `tenant_id` bigint NOT NULL DEFAULT 0 COMMENT '租户编号',
   PRIMARY KEY (`id`),
-  KEY `idx_record_id` (`record_id`)
+  KEY `idx_record_id` (`record_id`),
+  KEY `idx_template_id` (`template_id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='巡检明细';