清理全局角色残留并修复项目权限判断

backend/app/crud/user.py

@@ -1,7 +1,5 @@
 from __future__ import annotations
 
-from __future__ import annotations
-
 import uuid
 from typing import Sequence
 
@@ -16,7 +14,7 @@ from app.core.config import (
 )
 from app.core.security import hash_password
 from app.models.study_member import StudyMember
-from app.models.user import User, UserRole, UserStatus
+from app.models.user import User, UserStatus
 from app.schemas.user import UserCreate, UserRegisterRequest, UserUpdate
 
 
@@ -46,7 +44,6 @@ async def create_user(
         email=user_in.email,
         password_hash=hash_password(user_in.password),
         full_name=user_in.full_name,
-        role=UserRole.PV,
         clinical_department=user_in.clinical_department,
         status=status_value,
     )
@@ -114,7 +111,7 @@ async def count_active_admins(db: AsyncSession) -> int:
     result = await db.execute(
         select(func.count())
         .select_from(User)
-        .where(User.role == UserRole.ADMIN, User.status == UserStatus.ACTIVE)
+        .where(User.is_admin.is_(True), User.status == UserStatus.ACTIVE)
     )
     return int(result.scalar_one() or 0)
 
@@ -138,7 +135,7 @@ async def ensure_admin_exists(db: AsyncSession, *, default_password: str = PROTE
         email=PROTECTED_ADMIN_EMAIL,
         password_hash=hash_password(default_password),
         full_name=PROTECTED_ADMIN_FULL_NAME,
-        role=UserRole.ADMIN,
+        is_admin=True,
         clinical_department=PROTECTED_ADMIN_CLINICAL_DEPARTMENT,
         status=UserStatus.ACTIVE,
     )