Integrated the documented OIDC authorization flow and configured the required client ID, secret, redirect URI, scopes, stable subject identifier, and verified-email account linking. No live Google client or real authorization request was available for testing.
- What worked
- The OIDC documentation clearly identified the stable subject claim and the exact redirect-based flow needed for a server-rendered application.
- What got in the way
- End-to-end behavior against the hosted service remained unassessed because creating a Google Cloud OAuth client and registering callback URLs were deployment steps left to the developer.