May 2026: Stabilized external dependencies, clarified platform support, and hardened data tooling across three repositories. Delivered: (1) restored access to a critical mathematics resource in EbookFoundation/free-programming-books by using an Internet Archive snapshot, updating to HTML format with archived notation per contributing guidelines; closes #13239; (2) clarified macOS arm64-only support for single-executable apps in nodejs/node, explicitly excluding darwin-x64 and skipping x64 CI; (3) consolidated ClickHouse SETTINGS into a single clause in TobikoData/sqlmesh and added tests to prevent syntax errors in generated queries. These changes improve learner access, CI reliability, and correctness of data tooling, delivering measurable business value with reduced risk.