Closes#588. Contributing-artist tagging worked for some tracks but
silently dropped them for others — most reproducibly when the album
had been fetched before the per-track post-process ran.
Trace: get_track_details cache check used `track_position in cached`
as the "full payload" sentinel. Both `/track/<id>` AND
`/album/<id>/tracks` set track_position. Only `/track/<id>` sets the
`contributors` array. When album-tracks data hit the cache first,
get_track_details returned the partial record →
_build_enhanced_track found no contributors → metadata-source
contributors-upgrade silently fell back to single-artist.
Reporter's case (Andrea Botez - Sacrifice): the album fetch logged
"Retrieved 4 tracks for album 673558211" before the post-process,
which cached all 4 tracks as partial records. The contributors-
upgrade then hit the partial cache and the upgrade log line never
fired because len(upgraded) was never > 1.
Lifted cache-validity to a pure helper `_is_full_track_payload` that
requires BOTH `track_position` AND `contributors` key presence. Empty
list `[]` is valid — single-artist tracks fetched via `/track/<id>`
carry it explicitly. Partial cache hits fall through to a fresh
`/track/<id>` fetch, which writes the full payload back to cache.
11 boundary tests pin every shape: full payload, single-artist with
empty contributors list, partial album-tracks shape, search-result
shape, none/non-dict, and the cache-hit/cache-miss/api-failure paths
on get_track_details (including the exact reporter-scenario
regression).
Full suite: 3021 passed.
Adds an explicit field to the Album dataclass in core/metadata/types.py
and the client-level Album dataclasses in deezer_client.py,
itunes_client.py, and hydrabase_client.py (the legacy discography path
reads from client objects, not typed dicts).
Deezer extracts explicit_lyrics (int→bool), iTunes extracts
collectionExplicitness ('explicit' string), Hydrabase forwards the
explicit field from the server response. Spotify, Discogs, MusicBrainz,
Qobuz, and Tidal have no explicit signal and stay None.
The flag threads through both builder functions in discography.py and
renders as a small "E" badge next to explicit titles in the discography
download modal and artist-detail page cards.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Discord report (Tim): downloaded cover art via Deezer metadata
source came out visibly blurry in Navidrome / on phones — large
displays exposed the limited resolution.
# Cause
Deezer's API returns `cover_xl` URLs at 1000×1000. The underlying
CDN actually serves up to 1900×1900 by rewriting the size segment
in the URL path (same trick the iTunes mzstatic + Spotify scdn
upgrades already use). SoulSync wasn't doing the rewrite — every
Deezer-sourced cover got embedded at 1000×1000 regardless of how
much higher resolution the CDN had available.
# Verified empirically
```
$ for size in 1000 1400 1800 1900 2000; do curl -I "...{size}x{size}-..."; done
1000: 200 OK 106 KB
1400: 200 OK 198 KB
1800: 200 OK 331 KB
1900: 200 OK 371 KB
2000: 403 Forbidden
```
1900 is the safe ceiling. Above that the CDN returns 403. CDN
serves source-native bytes when source < target (smaller-source
albums get same bytes whether we ask for 1000 or 1900), so asking
for 1900 universally is safe.
# Fix
New `_upgrade_deezer_cover_url(url, target_size=1900)` helper in
`core/deezer_client.py`. Pure function, mirrors the
`_upgrade_spotify_image_url` pattern that already lives in
`core/spotify_client.py`. Defensive on every input shape:
- Empty / None → returned as-is
- Non-Deezer URL (no `dzcdn`) → returned as-is
- No size segment in URL → returned as-is
- Already at/above target → returned as-is (idempotent, never
downgrades)
Applied at both cover-download sites:
- `core/metadata/artwork.py::download_cover_art` — auto post-process
flow. Mirrors the existing iTunes mzstatic upgrade right above it.
- `core/tag_writer.py::download_cover_art` — enhanced library view's
"Write Tags to File" feature.
# Scope discipline
- Helper applied at the DOWNLOAD boundary, not the source extraction
point in `deezer_client.py`. Means cached entries in the metadata
cache + DB row `image_url` columns keep the original 1000×1000 URL
Deezer's API returned. Future CDN behavior changes only affect the
download path, not stored data.
- Pre-existing `prefer_caa_art` toggle (Settings → Library →
Post-Processing) untouched — orthogonal workaround for users who
want even higher quality (MusicBrainz Cover Art Archive, often
3000×3000+).
- iTunes / Spotify upgrade paths untouched — they already worked.
# Tests added (16)
`tests/metadata/test_deezer_cover_url_upgrade.py`:
- Standard upgrade: default target 1900 on cover URL, alternate
dzcdn host (`e-cdns-images.dzcdn.net` vs `cdn-images.dzcdn.net`),
artist picture URLs (same path pattern), 500×500 source upgrades
too
- Custom target size: smaller target = no-op (never downgrade),
larger target works
- Idempotent: already at/above target returned unchanged
- Defensive on non-Deezer URLs: parametrised across 5 hosts
(Spotify scdn, iTunes mzstatic, MB CAA, Last.fm, random) — all
returned untouched
- Defensive on malformed Deezer URL (no size segment) → returned
as-is
- Empty / None handling
# Verification
- 16/16 helper tests pass
- 560/560 metadata + imports tests pass (no regression)
- 2559 full suite passes
- Ruff clean
Defensive followup to the relevance fix. Deezer's advanced search
syntax (`artist:"X"`) is documented as substring match, but in
practice it's brittle on artist name variants ("Foreigner [US]",
"The Foreigner") and on tracks indexed under non-canonical title
spellings. When the advanced query returns nothing, we'd previously
land at "No matches" — a regression vs. pre-fix behaviour where
free-text would have returned a less-relevant but non-empty set.
Fix: when the advanced query returns 0 results AND the caller used
field-scoped kwargs, fall back to a free-text join of the same
kwargs and re-query. Caller-side rerank still tightens whatever the
fallback returns, so the worst-case post-fix behaviour is the
pre-fix behaviour — never strictly worse.
Pulled the cache + parse + store dance into a private helper
(`_search_tracks_with_query`) so the orchestration can call it
twice (advanced → fallback) without code duplication. Single API
call when the advanced query has results — no wasted requests.
Diagnostic logger.debug fires when the fallback triggers so we can
see in production whether it's happening (and to which queries).
# Tests added (4)
- `test_falls_back_to_free_text_when_advanced_empty` — advanced
query returns 0, free-text returns hits; client returns the
free-text hits + both API calls fire.
- `test_no_fallback_when_advanced_query_has_results` — single hit
on advanced query → no second API call.
- `test_no_fallback_when_legacy_free_text_call` — legacy callers
already exhausted the only path; empty result is final.
- `test_no_fallback_when_query_unchanged` — empty kwargs path
doesn't trigger the fallback branch (used_advanced=False).
# Existing tests updated
The 4 prior `TestSearchTracksQueryWiring` + `TestSearchTracksCacheKey`
tests were stubbing `_api_get` to return empty `{'data': []}` and
asserting `assert_called_once`. With the new fallback, those stubs
trigger a second API call and the assertions break — even though
the FIRST call construction is what the tests cared about. Updated
the stubs to return one fake hit so the fallback doesn't fire, and
switched to `call_args_list[0]` for first-call inspection.
# Verification
- 18/18 deezer query tests pass (14 prior + 4 new)
- 2445 full suite passes (+4 from prior commit)
- Ruff clean
# Background
User reported (#534) that the import-modal "Search for Match" dialog
returned irrelevant results when Deezer was the metadata source.
Searching `Dirty White Boy` + `Foreigner` returned 5+ karaoke /
"originally performed by" / "in the style of" / "re-recorded" /
tribute-band results ranked above the actual Foreigner studio cut
from Head Games. User had to scroll past the junk every time, or
fall back to iTunes search which is much slower.
# Root cause — two layers
1. **Endpoint joined `track + artist` into free-text query.**
`/api/deezer/search_tracks` was passing `q=Dirty White Boy Foreigner`
to Deezer's `/search/track` API. Deezer fuzzy-matches that
string across title / lyrics / artist / album / contributors and
orders by global popularity — anything that appears across many
compilations outranks the canonical recording.
2. **No local rerank.** None of the search-modal endpoints applied
any post-filtering. Deezer's API order shipped straight to the
user.
# Fix — same architectural shape Cin would build
## Layer 1: field-scoped query at the client boundary
`core/deezer_client.py::search_tracks()` now accepts optional
`track`, `artist`, `album` kwargs. When provided, builds Deezer's
advanced search syntax: `q=track:"X" artist:"Y" album:"Z"`. Massive
relevance improvement because each term matches the right field
instead of fuzzy-matching everywhere.
Backward compat preserved: legacy free-text `query=` callers still
work unchanged. Field-scoped path takes precedence when both are
provided. Empty input fast-fails without an API call. Embedded
double-quotes stripped (Deezer's syntax has no escape mechanism).
## Layer 2: provider-neutral relevance reranker
New `core/metadata/relevance.py` module — pure-function rerank over
the canonical `Track` dataclass. Composable scoring:
- **Cover/karaoke patterns** (multiplier 0.05, effectively buries):
matches "karaoke", "originally performed by", "in the style of",
"made famous by", "tribute", "vocal version", "backing track",
"cover version", "re-recorded", "cover by", etc. across title,
album, AND artist fields. Catches the screenshot's exact junk:
artist credits like "Pop Music Workshop" / "The Karaoke Channel"
/ "Foreigner Tribute Band".
- **Variant tags** (multiplier 0.4): live / acoustic / demo /
instrumental / remix / radio edit / club mix etc. — softer
penalty since the user MAY want them. Skipped entirely when the
expected_title contains the same tag (so searching
"Track (Live)" still ranks Live versions first).
- **Exact artist boost** (multiplier 1.5): primary artist exactly
matches expected_artist after normalisation. Single strongest
signal for "this is the canonical recording".
- **Title + artist similarity** via SequenceMatcher (parentheticals
+ punctuation stripped before comparison).
- **Album-type weighting**: album=1.0 > single/ep=0.85 > compilation=0.7.
Compilations are more likely tribute / karaoke repackages.
Each component is a standalone function so tests pin them
individually without standing up the full pipeline.
## Wired at three search-modal endpoints
- `/api/deezer/search_tracks` — uses both layers (field-scoped
query + rerank).
- `/api/itunes/search_tracks` — uses rerank only (iTunes API has
no advanced-syntax search, but karaoke / cover variants still
leak through and need the local penalty).
- `/api/spotify/search_tracks` — already builds field-scoped
`track:X artist:Y` query; rerank added as the consistency safety
net so all three sources behave the same from the user's
perspective.
Other Deezer call sites (matching engine, watchlist scanner,
auto-import single-track ID) deliberately not touched in this PR
— they have their own elaborate scoring pipelines tuned to their
specific contexts and aren't surfacing the user-reported issue.
Per Cin: "don't refactor beyond what the task requires."
# Tests
71 new tests across 3 files:
- `tests/metadata/test_relevance.py` (50 tests) — every scoring
component pinned individually + the issue #534 screenshot
reproduced as a regression test (real Foreigner cut wins after
rerank, karaoke variants drop to bottom).
- `tests/metadata/test_deezer_search_query.py` (14 tests) —
advanced-syntax query construction, field-scoped wiring at the
client boundary, free-text path unchanged, kwargs win when
ambiguous, limit clamping, cache key consistency.
- `tests/imports/test_search_match_endpoints.py` (7 tests) —
end-to-end through Flask test client: Deezer endpoint passes
kwargs not joined query; karaoke buried at bottom for all three
sources; legacy query param still works without rerank.
# Verification
- 2441 full suite passes (+71 from baseline 2370)
- 0 failures (the prior watchdog flake fix held)
- Ruff clean across all changed files
- JS parses clean (`node -c webui/static/helper.js`)
# Architectural standards followed
- **Logic at the right boundary.** Query construction lives in the
client (every caller benefits from one change). Rerank lives in
a neutral module (`core/metadata/relevance.py`) over the
canonical `Track` dataclass — works for any source, not Deezer-
specific.
- **Explicit > implicit.** Every scoring rule has its own named
function. Pattern tables are module-level constants tests can
introspect.
- **Scope discipline.** Audited every Deezer search call site;
fixed the user-reported one + the consistent siblings. Did NOT
speculatively normalise every Deezer call across the codebase.
- **Backward compat.** Free-text `query=` callers untouched. Kwargs
added to existing client method signature with safe defaults.
- **Tests pin contract at correct boundary.** Pure-function rerank
tests don't mock anything; client-query tests stub at `_api_get`;
endpoint tests run through the real Flask app.
Closes#513 (s66jones).
The artist detail page already showed a "Popular on Last.fm" sidebar —
list of an artist's top tracks by playcount, with a play button per row
but no download action. Issue #513 wanted a way to grab those tracks
the same way zotify let users grab "top X songs" without pulling the
full discography.
Pulls from the configured primary metadata source (Spotify
`artist_top_tracks`, Deezer `/artist/{id}/top`) when available, falls
back to the existing Last.fm display-only mode for sources that don't
expose popularity ranking (iTunes / Discogs / MusicBrainz). Source
label in the section title shifts to match.
Each row gets a hover-revealed download button that wishlists the
single track via the existing /api/add-album-to-wishlist endpoint
(preserves the track's real album metadata, so the wishlist worker
later places the file in its proper album folder).
A "Download All" footer button opens the standard download modal in
PLAYLIST context, not album context — the virtual playlist_id is
`top_tracks_<source>_<artistId>` which doesn't match any of the
album-prefix checks in `startMissingTracksProcess` (downloads.js).
That keeps `is_album_download=false`, so the master worker doesn't
inject a wrapper context as `_explicit_album_context`. Each track
downloads using its own real album metadata, files land in proper
per-album folders on disk (not a fake "Top Tracks" folder).
Backend additions:
- `SpotifyClient.get_artist_top_tracks(artist_id, country, limit)` —
wraps `spotipy.artist_top_tracks`, returns up to 10 tracks for the
market (Spotify's API cap). UI-side limit trim only.
- `DeezerClient.get_artist_top_tracks(artist_id, limit)` — wraps
`/artist/{id}/top?limit=N`, converts Deezer's raw shape to the same
Spotify-compatible dict layout (id, name, artists, album with
album_type / total_tracks / images, duration_ms, track_number,
disc_number) so downstream code doesn't branch on source.
- `GET /api/artist/<id>/top-tracks` — dispatches to whichever client
matches the primary source. Resolves per-source artist IDs from the
DB row first (matching what /discography already does) so a Spotify
ID in the URL still works when Deezer is primary, and vice versa.
Returns `{success, source, tracks, resolved_artist_id}` on hit;
`{success: False, reason: 'unsupported_source' | 'spotify_not_authenticated'
| 'deezer_unavailable' | 'no_tracks_found'}` on miss so the frontend
can decide whether to fall through to Last.fm.
Frontend:
- `_loadArtistTopTracks` tries the metadata source first, falls
through to the legacy `/api/artist/0/lastfm-top-tracks` call if the
source can't deliver. Section title and per-row UI shift based on
which source answered.
- New per-row `.hero-top-track-download` button (hover-revealed).
- New `.hero-top-tracks-download-all` footer button — only visible
when metadata-source mode rendered the list (Last.fm fallback hides
it since rows have no track IDs to download).
Tests: 10 new tests pin the client methods —
- Spotify: returns track list, honors UI limit cap, returns empty when
unauthed / artist_id missing / API throws.
- Deezer: shape conversion to Spotify-compatible dict, empty when no
data / artist_id missing, limit clamping at upper bound, default
fallback when limit=0, malformed entries skipped.
The Flask endpoint dispatcher itself isn't covered by the new test
file because importing web_server at test-collection time spins up
worker threads that race with caplog-using tests elsewhere in the
suite (specifically test_library_reorganize_orchestrator). Endpoint
verified manually; the underlying client methods (the load-bearing
logic) are covered.
2204/2204 full suite green (was 2194 + 10 new).
- Pass playlist image_url to _run_sync_task from all source-specific sync
start handlers (Deezer, Tidal, Spotify public, YouTube, automation mirror)
— previously only the /api/sync/start endpoint passed it
- Fix plex_client.set_playlist_image: use uploadPoster(url=) instead of
uploadPoster(data=) which is not a valid PlexAPI argument
- deezer_client: use picture_xl > picture_big > picture_medium fallback
for better cover art resolution
- tidal_client: extract image_url in get_playlist() from JSON:API
relationships (was only extracted in metadata-only listing)
- parse_youtube_playlist: capture playlist thumbnail from yt-dlp result
- Add visible logging for image upload attempts and outcomes
Builds a new Your Albums section on the Discover page that aggregates
saved/liked albums from all connected services, mirroring the Your Artists
pattern. Deezer works via both OAuth and ARL.
- tidal_client: add get_favorite_albums() with V2/V1 API fallback
- deezer_client: add get_user_favorite_albums() via OAuth (user/me/albums)
- deezer_download_client: add get_user_favorite_albums() via ARL session
- music_database: add liked_albums_pool table (deduped by artist::album
normalized key), upsert_liked_album, get_liked_albums,
get_liked_albums_last_fetch, clear_liked_albums
- web_server: GET /api/discover/your-albums (ownership-checked, paginated),
GET /api/discover/your-albums/sources, POST /api/discover/your-albums/refresh,
_fetch_liked_albums background worker (Spotify + Tidal + Deezer OAuth/ARL)
- frontend: Your Albums section with source selector cog, album grid reusing
spotify-library-card styles, search/filter/sort/pagination, download missing
button, auto-refresh poll on first load
Also fix: Deezer greyed out in Your Artists sources when using ARL — connection
check now accepts ARL auth (deezer_dl.is_authenticated()) in addition to OAuth,
and _fetch_and_match_liked_artists falls back to ARL client for artist fetching.
Deezer and iTunes defaulted to 50 albums max, silently truncating large
discographies. Deezer now paginates (100 per page) up to 200. iTunes
raised to 200 (single call). All callers in web_server.py updated to
use the new defaults instead of hardcoding limit=50.
Also adds diagnostic logging for allow_duplicates album comparison
to help debug inconsistent singles behavior.
Deezer's API returns a contributors array with all credited artists on
a track, but only the primary artist field was used. Now extracts all
contributor names into the artists array for feature/collab tracks.
Only affects the per-track ARTIST tag (TPE1) — album artist, folder
paths, and matching are unchanged. Falls back to single primary artist
when contributors field is absent (search results) or has only one
entry.
Deezer's /artist/{id}/albums endpoint returns albums without an artist
field, causing 98% of cached Deezer albums to have empty artist_name.
Now injects the known artist before caching.
Also fixes get_track_details cache validation — was trusting search
result cache (which has isrc but no track_position), returning
track_number=0. Now only trusts cache entries with track_position.
Discovery workers now respect the user's configured primary metadata
source instead of always using Spotify when authenticated. This
completes the intent of commit 3c211ea.
The core fix addresses data loss in the discovery→sync→wishlist→download
pipeline: the Track dataclass strips album metadata to a plain string,
losing album ID, track_number, release_date, and images. Discovery
workers now enrich results via get_track_details() to recover this data.
Deezer's get_track_details() cache validation was incorrectly trusting
search-result cache (which lacks track_position), returning track_number=0.
Also fixes wishlist download processing where albums without IDs couldn't
map to artists, and the fallback read 'artist' (singular) instead of
'artists' (plural), always producing "Unknown Artist".
Includes a one-time migration to purge stale discovery cache entries.
YOUR ARTISTS (major feature):
- Aggregates liked/followed artists from Spotify, Tidal, Last.fm, Deezer
- Matches to ALL metadata sources (Spotify, iTunes, Deezer, Discogs)
- DB-first matching: library → watchlist → cache → API search (capped)
- Image backfill from Spotify API for artists missing artwork
- Carousel on Discover page with 20 random matched artists
- View All modal with search, source filters, sort, pagination
- Artist info modal: hero image, matched source badges, genres, bio,
listeners/plays from Last.fm, watchlist toggle, view discography
- Auto-refresh with loading state on first load, polls until ready
- Deduplication by normalized name across all services
DEEZER OAUTH:
- Full OAuth flow: /auth/deezer + /deezer/callback
- Settings UI on Connections tab (App ID, Secret, Redirect URI)
- Token stored encrypted, auto-included in API calls
- get_user_favorite_artists() for liked artists pool
SERVICE CLIENTS:
- Spotify: added user-follow-read scope + get_followed_artists()
- Tidal: get_favorite_artists() with V2/V1 fallback
- Last.fm: get_authenticated_username() + get_user_top_artists()
FAILED MB LOOKUPS MANAGER:
- Manage button on Cache Health modal
- Browse/filter/search all failed MusicBrainz lookups
- Search MusicBrainz directly and manually match entries
- Optimized cache health queries (11 → 4 consolidated)
- Dashboard cache stats now poll every 15s
EXPLORER IMPROVEMENTS:
- Discover button on undiscovered playlist cards
- Status badges: explored/wishlisted/downloaded/ready
- Auto-refresh during discovery via polling
- Redesigned controls: prominent Explore button, icons
BUG FIXES:
- Fix album artist splitting on collab albums (collab mode fed
album-level artists instead of per-track)
- Fix cover.jpg not moving during library reorganize (post-pass sweep)
- Fix cover.jpg missing when album detection takes fallback path
- Fix wishlist auto-processing toast spam (was firing every 2s)
- Fix media player collapsing on short viewports
- Fix watchlist rate limiting (~90% fewer API calls)
- Configurable spotify.min_api_interval setting
- Better Retry-After header extraction
- Encrypt Last.fm and Discogs credentials at rest
- Add $discnum template variable (unpadded disc number)
- New core/api_call_tracker.py — centralized tracker with rolling 60s
timestamps (speedometer) and 24h minute-bucketed history (charts)
- Instrument all 9 service client rate_limited decorators to record
actual API calls with per-endpoint tracking for Spotify
- 1-second WebSocket push loop for real-time gauge updates
- Modern radial arc gauges with service brand colors, glowing active
arc, endpoint dot, 0/max scale labels, smooth CSS transitions
- Click any gauge to open detail modal with 24h call history chart
(Canvas 2D, HiDPI, gradient fill, grid lines, danger zone band)
- Spotify modal shows per-endpoint history lines with color legend
and live per-endpoint breakdown bars
- Rate limited state indicator — blinking red badge with countdown
timer appears on gauge card when Spotify ban is active
- REST endpoint GET /api/rate-monitor/history/<service> for chart data
- Responsive grid layout (5 cols desktop, 3 tablet, 2 phone)
Root cause: search_albums cached album data without release_date or
track_position. get_album_metadata accepted this incomplete cache hit
(only checked for title), never called the full API. Result: year
empty, all tracks numbered 01.
Fix: get_album_metadata now requires release_date in cache to use it.
Search results without release_date trigger a fresh /album/{id} API
call which returns complete data. Also improved track_number fallback
in download context builder when Spotify isn't configured.
The Deezer enrichment worker's 5 raw API methods (search_artist,
search_album, search_track, get_album_raw, get_track_raw) were
bypassing the metadata cache — every enrichment cycle hit the
Deezer API fresh for every item. Spotify and iTunes workers properly
cached all results.
Now all 5 methods store results via store_entity(). get_album_raw
and get_track_raw also check cache first (verified by presence of
full-detail fields like 'label' and 'bpm' to distinguish from
search stubs). Cache failures are silently ignored to never block
enrichment. This eliminates redundant API calls and automatically
populates genre data for the genre explorer.
Both clients have their own Track class separate from iTunes. The
album preference commit added album_type/total_tracks to from_*_track()
constructors but not to the class definitions, crashing all Deezer and
Spotify discovery searches.
Add album_type and total_tracks fields to Track dataclass, populate from
Spotify/iTunes/Deezer API responses, and apply a small tiebreaker bonus
(+0.02 for albums, +0.01 for EPs) in all matching loops so album versions
win when confidence scores are otherwise equal.
Deezer search results (cached without release_date, track_position, isrc)
were being served by get_track_details as cache hits, preventing the actual
/track/{id} API call that returns complete data. This caused $year template
variable to remain empty even with the discovery worker fix in place.
Users can now choose between iTunes/Apple Music and Deezer as their free
metadata source in Settings. Spotify always takes priority when authenticated;
the fallback handles all lookups when it's not.
Core changes:
- DeezerClient: full metadata interface (search, albums, artists, tracks)
matching iTunesClient's API surface with identical dataclass return types
- SpotifyClient: configurable _fallback property switches between iTunes/Deezer
based on live config reads (no restart needed)
- MetadataService, web_server, watchlist_scanner, api/search, repair_worker,
seasonal_discovery, personalized_playlists: all direct iTunesClient imports
replaced with fallback-aware helpers
Database:
- deezer_artist_id on watchlist_artists and similar_artists tables
- deezer_track_id/album_id/artist_id on discovery_pool and discovery_cache
- Full CRUD for Deezer IDs: add, read, update, backfill, metadata enrichment
- Watchlist duplicate detection by artist name prevents re-adding across sources
- SimilarArtist dataclass and all query/insert methods handle Deezer columns
Bug fixes found during review:
- Similar artist backfill was writing Deezer IDs into iTunes columns
- Discover hero was storing resolved Deezer IDs in wrong column
- Status cache not invalidating on settings save (source name lag)
- Watchlist add allowing duplicates when switching metadata sources
Add Deezer as a third metadata enrichment source. Enriches tracks with BPM and explicit flags, albums with
record labels, explicit flags, and type classification (album/single/EP), and backfills artwork and genres across
all entities. Includes background worker with priority queue, rate-limited API client, database migration, server
endpoints, and UI button with purple-themed status tooltip.
Broque Thomas
dlynas
Antti Kettunen
Broque Thomas