refactor(repo): 收敛 base_model 双轨，删除函数统一走 repo.batch_delete_r

- shared/base_repository.py 新增 batch_delete_r（返回 R，等价原 base_model 语义）
- 20 个模块删除函数从 Model.batch_delete_r 改为 x_repo.batch_delete_r
- shared/base_model.py 移除 classmethod（get_by_id/get_by_ids/get_all_active/exists/batch_delete_r），只留字段 + to_dict
- 清理 base_model 多余 imports
- 实测 dept 删除、批量删除及多模块读接口正常

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

shared/base_model.py

@@ -6,20 +6,15 @@
 # +======================================================================
 # 由 apps/models/base_model.py 迁移而来。
 
-"""数据库模型基类：通用字段、序列化与通用查询方法。"""
+"""数据库模型基类：通用字段与序列化方法（数据访问统一走 Repository）。"""
 
-import logging
 from datetime import date, datetime, timezone
-from typing import Optional, List, Dict, Any
+from typing import Dict, Any
 
-from sqlalchemy import Column, Integer, DATETIME, and_
+from sqlalchemy import Column, Integer, DATETIME
 
-from core import R
-from core.database import Base, get_db_session
+from core.database import Base
 from shared.constants import SERIALIZE_EXCLUDE_FIELDS
-from utils.request import parse_id_list
-
-logger = logging.getLogger(__name__)
 
 _UTC_NOW = lambda: datetime.now(tz=timezone.utc)
 
@@ -76,74 +71,3 @@ class base_model(Base):
                 value = value.strftime('%Y-%m-%d')
             result[column.name] = value
         return result
-
-    # ============================================================
-    # 通用查询方法
-    # ============================================================
-
-    @classmethod
-    def get_by_id(cls, id: Optional[int]) -> Optional['base_model']:
-        """根据ID获取未删除的记录，不存在返回 None"""
-        if id is None or id <= 0:
-            return None
-        db = get_db_session()
-        return db.query(cls).filter(cls.id == id, cls.is_delete == 0).first()
-
-    @classmethod
-    def get_by_ids(cls, ids: List[int]) -> List['base_model']:
-        """根据ID列表批量获取未删除的记录"""
-        if not ids:
-            return []
-        valid_ids = [i for i in ids if i and i > 0]
-        if not valid_ids:
-            return []
-        db = get_db_session()
-        return db.query(cls).filter(cls.id.in_(valid_ids), cls.is_delete == 0).all()
-
-    @classmethod
-    def get_all_active(cls) -> List['base_model']:
-        """获取所有未删除的记录"""
-        db = get_db_session()
-        return db.query(cls).filter(cls.is_delete == 0).all()
-
-    @classmethod
-    def exists(cls, id: Optional[int]) -> bool:
-        """检查未删除记录是否存在"""
-        if id is None or id <= 0:
-            return False
-        db = get_db_session()
-        return db.query(cls).filter(cls.id == id, cls.is_delete == 0).count() > 0
-
-    # ============================================================
-    # 删除方法
-    # ============================================================
-
-    @classmethod
-    def batch_delete_r(cls, ids_str: Optional[str]):
-        """
-        批量软删除并返回R对象
-
-        封装ID校验、解析、软删除的完整流程。
-
-        Args:
-            ids_str: 逗号分隔的ID字符串，如 "1,2,3"
-
-        Returns:
-            R: 操作结果
-        """
-        if not ids_str:
-            return R.failed("记录ID不存在")
-
-        id_list = parse_id_list(ids_str)
-        if not id_list:
-            return R.failed("记录ID不存在")
-
-        db = get_db_session()
-        records = db.query(cls).filter(and_(cls.id.in_(id_list), cls.is_delete == 0)).all()
-        if len(records) != len(id_list):
-            return R.failed("记录不存在")
-
-        for record in records:
-            record.is_delete = 1
-
-        return R.ok(msg="本次共删除{0}条数据".format(len(records)))