chore(quality): apply ruff autofixes and formatting (223 fixes, regression-free: 118/118 tests pass)

app/services/auth_service.py

@@ -2,8 +2,6 @@
 
 from __future__ import annotations
 
-from typing import Optional
-
 from sqlalchemy import select
 from sqlalchemy.exc import IntegrityError
 from sqlalchemy.ext.asyncio import AsyncSession
@@ -35,15 +33,11 @@ class InvalidCredentials(AuthError):
 
 async def count_users(db: AsyncSession) -> int:
     """Count active (non-soft-deleted) users. Used to gate bootstrap registration."""
-    result = await db.execute(
-        select(User).where(User.deleted_at.is_(None))
-    )
+    result = await db.execute(select(User).where(User.deleted_at.is_(None)))
     return len(result.scalars().all())
 
 
-async def register_user(
-    db: AsyncSession, payload: UserRegisterRequest
-) -> tuple[User, str]:
+async def register_user(db: AsyncSession, payload: UserRegisterRequest) -> tuple[User, str]:
     """Bootstrap registration.
 
     Creates a new Org and the first user (or a new user in the existing org
@@ -81,9 +75,7 @@ async def register_user(
         await db.commit()
     except IntegrityError as e:
         await db.rollback()
-        raise EmailAlreadyExists(
-            f"A user with email {payload.email!r} already exists."
-        ) from e
+        raise EmailAlreadyExists(f"A user with email {payload.email!r} already exists.") from e
 
     await db.refresh(user)
 
@@ -92,9 +84,7 @@ async def register_user(
     return user, token
 
 
-async def authenticate_user(
-    db: AsyncSession, email: str, password: str
-) -> Optional[tuple[User, str]]:
+async def authenticate_user(db: AsyncSession, email: str, password: str) -> tuple[User, str] | None:
     """Verify credentials and return (user, token) on success, None on failure.
 
     The endpoint wraps this and returns 401 on None — keeping the