清理全局角色残留并修复项目权限判断

backend/app/models/user.py

@@ -5,22 +5,13 @@ import enum
 import uuid
 from datetime import datetime
 
-from sqlalchemy import DateTime, Enum, ForeignKey, String, func
+from sqlalchemy import Boolean, DateTime, Enum, ForeignKey, String, func
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import Mapped, mapped_column
 
 from app.db.base_class import Base
 
 
-class UserRole(str, enum.Enum):
-    ADMIN = "ADMIN"
-    PM = "PM"
-    CRA = "CRA"
-    PV = "PV"
-    QA = "QA"
-    CTA = "CTA"
-
-
 class UserStatus(str, enum.Enum):
     PENDING = "PENDING"
     ACTIVE = "ACTIVE"
@@ -35,8 +26,8 @@ class User(Base):
     email: Mapped[str] = mapped_column(String(255), unique=True, index=True, nullable=False)
     password_hash: Mapped[str] = mapped_column(String(255), nullable=False)
     full_name: Mapped[str] = mapped_column(String(255), nullable=False)
-    role: Mapped[UserRole] = mapped_column(Enum(UserRole, name="user_role"), nullable=False)
     clinical_department: Mapped[str] = mapped_column(String(255), nullable=False)
+    is_admin: Mapped[bool] = mapped_column(Boolean, nullable=False, server_default="false", default=False)
     status: Mapped[UserStatus] = mapped_column(
         Enum(UserStatus, name="user_status"),
         nullable=False,
@@ -66,10 +57,6 @@ class User(Base):
     def is_active(self) -> bool:  # compatibility helper for existing checks
         return self.status == UserStatus.ACTIVE
 
-    @property
-    def is_admin(self) -> bool:
-        return self.role == UserRole.ADMIN
-
     @property
     def username(self) -> str:  # backward compatibility for existing UI copy
         return self.email