Restructure into full project layout

backend/app/schemas/user.py

@@ -0,0 +1,45 @@
+from datetime import datetime
+from pydantic import BaseModel, EmailStr
+from app.models.user import UserRole
+
+
+class UserRegister(BaseModel):
+    email: EmailStr
+    password: str
+    display_name: str | None = None
+
+
+class UserLogin(BaseModel):
+    email: EmailStr
+    password: str
+
+
+class UserUpdate(BaseModel):
+    display_name: str | None = None
+    password: str | None = None
+
+
+class UserOut(BaseModel):
+    id: int
+    email: str
+    display_name: str | None
+    role: UserRole
+    is_active: bool
+    created_at: datetime
+
+    model_config = {"from_attributes": True}
+
+
+class TokenOut(BaseModel):
+    access_token: str
+    refresh_token: str
+    token_type: str = "bearer"
+
+
+class RefreshRequest(BaseModel):
+    refresh_token: str
+
+
+class AdminUserUpdate(BaseModel):
+    role: UserRole | None = None
+    is_active: bool | None = None