chore(quality): apply ruff autofixes and formatting (29 fixes, 41 files reformatted)

backend/app/schemas/user.py

@@ -5,6 +5,7 @@ from pydantic import BaseModel, EmailStr, Field
 
 class UserCreateRequest(BaseModel):
     """Request body for creating a new user (invite)."""
+
     email: EmailStr
     full_name: str = Field(..., min_length=2, max_length=255)
     password: str = Field(..., min_length=8, max_length=128)
@@ -13,6 +14,7 @@ class UserCreateRequest(BaseModel):
 
 class UserUpdateRequest(BaseModel):
     """Request body for updating an existing user."""
+
     full_name: str | None = Field(None, min_length=2, max_length=255)
     role_id: str | None = None
     is_active: bool | None = None
@@ -20,6 +22,7 @@ class UserUpdateRequest(BaseModel):
 
 class UserResponse(BaseModel):
     """Public user representation (no password hash)."""
+
     id: str
     account_id: str
     email: str
@@ -34,6 +37,7 @@ class UserResponse(BaseModel):
 
 class UserListResponse(BaseModel):
     """Paginated list of users."""
+
     items: list[UserResponse]
     total: int
     page: int