feat(sso): update User model and schemas for Keycloak

backend/app/models.py

@@ -12,7 +12,8 @@ class User(Base):
     id: Mapped[int] = mapped_column(Integer, primary_key=True)
     username: Mapped[str] = mapped_column(String(64), unique=True, nullable=False)
     email: Mapped[str] = mapped_column(String(255), unique=True, nullable=False)
-    hashed_password: Mapped[str] = mapped_column(String(255), nullable=False)
+    hashed_password: Mapped[str | None] = mapped_column(String(255), nullable=True)
+    keycloak_sub: Mapped[str | None] = mapped_column(String(255), unique=True, nullable=True)
     is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
     configs: Mapped[list["Config"]] = relationship("Config", back_populates="owner")
 

backend/app/schemas.py

@@ -1,15 +1,9 @@
 from datetime import datetime
 from typing import Optional
-from pydantic import BaseModel, EmailStr
+from pydantic import BaseModel
 
 
 # --- Auth ---
-class UserCreate(BaseModel):
-    username: str
-    email: EmailStr
-    password: str
-
-
 class UserOut(BaseModel):
     id: int
     username: str
@@ -19,11 +13,6 @@ class UserOut(BaseModel):
     model_config = {"from_attributes": True}
 
 
-class LoginRequest(BaseModel):
-    username: str
-    password: str
-
-
 # --- Config ---
 class ConfigCreate(BaseModel):
     name: str