```

refactor(core,ai): 调整模块导入路径并移除废弃文件

- 修复 scheduler.py 中的导入路径错误，将 reports.service
  改为 reports.services
- 移除废弃的 app/core/background/task_queue.py 文件
- 移除废弃的 app/modules/ai_agent/adapters.py 文件
- 修复 ai_memory/service.py 中的导入路径错误，将
  events.service 改为 events.services
```

tests/test_smoke.py

@@ -47,10 +47,10 @@ from app.modules.events.constants import (
     EventStatus,
     EventType,
 )
-from app.modules.events.service import EventService
+from app.modules.events.services import EventService
 from app.modules.business.registry import get_domain_model
 from app.modules.business.service import _model_payload, serialize_model
-from app.modules.legacy_mysql.service import LegacyMySQLService
+from app.modules.legacy_mysql.services import LegacyMySQLService
 from app.modules.observability.constants import (
     HeartbeatComponent,
     ObservabilityKey,