Testing MiniMax M3 on real tasks: repo refactor, screenshot debugging, and Spotify recommendations

A hands-on look at MiniMax M3 through Claude Code — what its new MiniMax Sparse Attention (MSA) is and how it differs from the lightning-attention and full-attention designs of earlier MiniMax models, plus three real tasks: auditing and refactoring an old idle game, debugging two stubborn UI bugs from screenshots, and turning years of Spotify history into music recommendations.