The sync was fine. Everything it put on the Rabbit was there and correct -- 2,432 media files, 208 covers, a manifest whose every field type-checks against the parser -- and andTunes still answered "No library / Couldn't read library.json". Fifteen tracks took all 2,439 songs down with them. Library.group() keyed albumsByKey case-folded and artistsByName raw-case, and only ever built the Artist inside `if (album == null)`. So the second track of an album whose artist is spelled differently found the album already there, skipped the block that would have made the artist, and dereferenced the null that came back. Six artists in trav's library are spelled two ways: RJD2/Rjd2, Toro Y Moi/Toro y Moi, FatBoy Slim/Fatboy Slim, LOVING/Loving, Land Of The Loops/Land of the Loops, Salami Rose Joe Louis/salami rose joe louis. It had worked until the 12th because that sync was the first to carry both spellings of one of those albums. Both maps fold case now, and the artist is fetched-or-made before the album block and held, so no lookup left in group() can come back null. Artist gains a key the way Album always had one, and ListActivity navigates by it -- ALBUM_ROW already passed album.key, so artists just stopped being the exception. The device filesystem is case-insensitive, so those two spellings are one folder there. plan_andtunes_sync compared exact strings and saw every such file as stale *and* missing, deleting and re-copying it over MTP on every sync forever; the diff and the collision rule both fold now. plan.stale still carries the device's own spelling, since that is what _delete_stale unlinks by. Verified on the Rabbit: 2,439 songs listed, RJD2 one row of 12 songs. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SKXUgsBBwe3qaHEjeV8ubP
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