Captures the rules and hard-won details from recent work: no mocked frontend
data, two-part versioning, yt-dlp-only download cascade + Mittelweg rule, file
naming, the YTM-search limitation for obscure tracks, and edit/delete file
resolution. Loaded automatically by Claude Code at session start.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
