~anthropic/claude-sonnet-latest → B (6:4)

Side B is a small, surgical bugfix that removes a real NameError crash risk in an auth flow by defining GITHUB_API_BASE_URL, providing immediate correctness value with near-zero risk. Side A is a larger refactor removing legacy projection code and updating tests/docs, which is valuable cleanup but riskier (data migration implications, broader behavior change) and less clearly a pure bugfix.