清理全局角色残留并修复项目权限判断

backend/app/schemas/user.py

@@ -5,7 +5,6 @@ from typing import Literal, Optional
 
 from pydantic import BaseModel, ConfigDict, EmailStr, Field, field_validator
 
-UserRole = Literal["PM", "CRA", "PV", "QA", "CTA", "ADMIN"]
 UserStatus = Literal["PENDING", "ACTIVE", "REJECTED", "DISABLED"]
 
 PASSWORD_REGEX = re.compile(r"^(?=.*[A-Za-z])(?=.*\d).{8,}$")
@@ -103,5 +102,4 @@ class Token(BaseModel):
 
 class TokenPayload(BaseModel):
     sub: uuid.UUID
-    role: str
     exp: Optional[int] = None