v2.1.42 is a bug-fix release that cleans up a few UX issues: /resume no longer shows interrupt messages as session titles, the Opus 4.6 launch announcement won’t appear for Bedrock/Vertex/Foundry users, and image dimension-limit failures now show a clearer error with a /compact suggestion. This improves correctness and reduces confusion for users and integrators with no major behavior changes beyond the fixes.