Research findings:
- Last.fm API supports batch scrobbling (up to 50 tracks)
- Timestamps can be backdated up to 14 days
Implementation:
- Add scrobble_queue table to offline database
- Add queue_scrobble, get_queued_scrobbles, mark_scrobbles_sent commands
- Queue scrobbles when offline instead of skipping
- Flush queue automatically when transitioning to online
- Skip scrobbles older than 14 days (Last.fm limit)
- Cleanup sent scrobbles after 7 days
vicrodh
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