refactor(schema): 重构数据库模型和 schema，清理废弃表

backend/src/v1/points/repository.py

@@ -8,7 +8,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 
 from models.points_ledger import PointsLedger
 from models.user_points import UserPoints
-from schemas.shared.points import ApplyPointsChangeCommand
+from schemas.domain.points import ApplyPointsChangeCommand
 
 
 class PointsRepository:

backend/src/v1/points/service.py

@@ -8,7 +8,7 @@ from uuid import UUID, uuid4
 from core.http.errors import ApiProblemError, problem_payload
 from schemas.domain.points import ConsumeLedgerMetadata, PointsChargeSnapshot
 from schemas.enums import PointsBizType, PointsChangeType, PointsOperatorType
-from schemas.shared.points import ApplyPointsChangeCommand
+from schemas.domain.points import ApplyPointsChangeCommand
 from v1.points.repository import PointsRepository
 
 RUN_POINTS_COST = 20