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

Side A fixes a real production bug (a NameError crash in the GitHub OAuth callback) by defining the missing GITHUB_API_BASE_URL, directly improving correctness and reliability. Side B is a substantial but purely test-infrastructure refactor—deduplicating helper functions across test files—which improves maintainability but has no production impact and carries more risk of subtle regressions in test behavior.