When merlin ran !similar, music operations (fade, queue, play loop)
targeted merlin instead of derp, causing audio to play over derp's
stream. New _music_bot() helper resolves the DJ bot via active state
or plugin filter config, so playback always routes to derp.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Default !similar now discovers similar artists/tracks, resolves each
against YouTube in parallel via ThreadPoolExecutor, fades out current
playback, and starts the new playlist. Old display behavior moves to
!similar list subcommand.
New helpers: _search_queries() normalizes Last.fm/MB results into search
strings, _resolve_playlist() resolves queries to _Track objects in
parallel. Falls back to display mode when music plugin not loaded.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
_current_meta now checks registry._bots for peer bot music state
when the current bot has nothing playing. Fixes merlin reporting
"Nothing playing" while derp is actively streaming.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Remove early return on missing Last.fm API key. Both commands now
fall back to MusicBrainz (mb_search_artist -> mb_artist_tags ->
mb_find_similar_recordings) when no API key is configured or when
Last.fm returns empty results. Same pattern used by discover_similar.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Every Nth autoplay pick (configurable via discover_ratio), query Last.fm
for similar tracks. When Last.fm has no key or returns nothing, fall back
to MusicBrainz tag-based recording search (no API key needed). Discovered
tracks are resolved via yt-dlp and deduplicated within the session. If
discovery fails, the kept-deck shuffle continues as before.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Covers API helpers (_get_similar_artists, _get_top_tags,
_get_similar_tracks, _search_track), config resolution, metadata
extraction from track titles, match score formatting, and both
commands (!similar, !tags) including play mode delegation, fallback
from track to artist similarity, and current-track integration.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
