更新v1.4版本，修复了一些已知问题

backend/services/admin_service.py

@@ -296,9 +296,8 @@ class AdminService:
             if not user:
                 return {"success": False, "message": "未找到对应的用户账号"}
             
-            password_hash = security.sha1_md5_password(new_password)
-            
-            result = await UserModel.update_password(user['user_id'], password_hash)
+            # UserModel.update_password 内部会进行哈希，无需预先哈希
+            result = await UserModel.update_password(user['user_id'], new_password)
             if result:
                 await execute_update(
                     "UPDATE users SET need_change_password = 1 WHERE user_id = %s",

backend/services/attendance_service.py

@@ -89,14 +89,17 @@ class AttendanceService:
                 points_change = -settings.DEDUCTION_ATTENDANCE_LATE
             else:
                 points_change = -settings.DEDUCTION_ATTENDANCE_LEAVE
-            # 创建扣分记录
+            
+            # 扣分为0时跳过（如请假不扣分）
+            if points_change == 0:
+                logger.info(f"用户[{recorder_id}] 添加考勤记录[{attendance_id}] -> {status} (不扣分)")
+                return {"success": True, "message": "考勤记录添加成功（不扣分）"}
             student = await StudentModel.get_by_id(student_id)
             if student:
                 # 获取操作人姓名
                 user = await UserModel.get_by_user_id(recorder_id)
                 recorder_name = user.get("real_name", "班主任") if user else "班主任"
                 # 使用中文状态
-                # 使用中文状态
                 status_text = ATTENDANCE_STATUS_MAP.get(status, status)
                 await ConductModel.create_record(
                     student_id=student_id,

backend/services/conduct_service.py

@@ -115,8 +115,10 @@ class ConductService:
                 details.append({"student_id": student_id, "error": str(e)})
                 fail_count += 1
         
+        message = "操作成功" if fail_count == 0 else f"{success_count}人成功，{fail_count}人失败"
         return {
             "success": fail_count == 0,
+            "message": message,
             "success_count": success_count,
             "fail_count": fail_count,
             "details": details
@@ -278,7 +280,7 @@ class ConductService:
                 limit=page_size,
                 offset=offset
             )
-            total = len(await ConductModel.get_student_records(student_id, limit=10000))
+            total = await ConductModel.count_student_records(student_id)
         else:
             # 查看自己提交的记录
             records = await ConductModel.get_records_by_recorder(
@@ -286,7 +288,7 @@ class ConductService:
                 limit=page_size,
                 offset=offset
             )
-            total = len(await ConductModel.get_records_by_recorder(user_id, limit=10000))
+            total = await ConductModel.count_records_by_recorder(user_id)
         
         return {
             "records": records,

backend/services/parent_service.py

@@ -135,9 +135,8 @@ class ParentService:
             offset=offset
         )
         
-        # 获取总数
-        all_records = await ConductModel.get_student_records(user["student_id"], limit=10000)
-        total = len(all_records)
+        # 使用 COUNT 查询获取总数（避免获取全部记录）
+        total = await ConductModel.count_student_records(user["student_id"])
         
         return {
             "student_id": student["student_id"],