January 2026 monthly summary: Maintained and improved development documentation for Office Add-ins in OfficeDev/office-js-docs-pr. Key update: added Outlook for Mac known issue to the Office Add-ins Known Issues page and updated the last-updated timestamp to 2026-01-16. This documentation improvement enhances cross-platform issue visibility, accelerates developer onboarding, and reduces support triage time. The change was implemented and committed to Git with hash 2f74ae213e18e652bff342cfafc2a52d9f742598, demonstrating disciplined version control and traceability.