auth

I need API key authentication for my FastAPI service. API keys must be stored securely (not plaintext), validated on every request, and I want to support multiple keys per user with revocation.

I want to let users log in with their GitHub account. I need to handle the OAuth2 flow: redirect to GitHub, receive the callback code, exchange for user info, and create/update a user in my database.

In FastAPI, attaching `response.set_cookie(...)` or `response.delete_cookie(...)` to the injected `Response` dependency *only* takes effect when the handler returns normally. When the handler raises H...