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feat: rework !similar to build and play discovery playlists

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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>
This commit is contained in:
user
2026-02-23 23:56:51 +01:00
parent b658053711
commit dd4c6b95b7
5 changed files with 357 additions and 173 deletions
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16
TASKS.md
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@@ -1,6 +1,19 @@
# derp - Tasks
## Current Sprint -- Enhanced Help with FlaskPaste (2026-02-23)
## Current Sprint -- Discovery Playlists (2026-02-23)
| Pri | Status | Task |
|-----|--------|------|
| P0 | [x] | `!similar` default: discover + resolve + play (playlist mode) |
| P0 | [x] | `!similar list` subcommand for display-only (old default) |
| P0 | [x] | `_search_queries()` normalizes Last.fm/MB results to search strings |
| P0 | [x] | `_resolve_playlist()` parallel yt-dlp resolution via ThreadPoolExecutor |
| P1 | [x] | Playback transition: fade out, clear queue, load playlist, fade in |
| P1 | [x] | Fallback to display when music plugin not loaded |
| P1 | [x] | Tests: 11 new cases (81 total in test_lastfm.py, 1949 suite total) |
| P2 | [x] | Documentation update (USAGE.md, CHEATSHEET.md, TASKS.md) |
## Previous Sprint -- Enhanced Help with FlaskPaste (2026-02-23)
| Pri | Status | Task |
|-----|--------|------|
@@ -319,6 +332,7 @@
| Date | Task |
|------|------|
| 2026-02-23 | `!similar` discovery playlists (parallel resolve, fade transition, list subcommand) |
| 2026-02-23 | Enhanced `!help` with FlaskPaste detail pages (docstrings, grouped reference) |
| 2026-02-23 | MusicBrainz fallback for `!similar` and `!tags` (no Last.fm key required) |
| 2026-02-22 | v2.3.0 (voice profiles, rubberband FX, multi-bot, self-mute, container tools) |