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

Side A fixes an actual production crash (NameError due to an undefined GITHUB_API_BASE_URL) with a precise, necessary one-line addition, directly preventing a real runtime failure in the OAuth flow. Side B is a broad but mostly cosmetic clippy cleanup pass (irrefutable-pattern simplification, format-string inlining, is_some_and swaps) that does include one genuine fix—wiring up a missing #[test] attribute—but the bulk of the diff is stylistic churn rather than substantive bugfixing.