[ansango]

Closes #157. Part of #153.

Summary

• Implemented client.exporter namespace with 3 bulk backup & migration engines:
  • exportScrobbles: Streamed scrobbles export with UTS checkpointing for resumable backward scans, and multi-format output (json, jsonl, csv, listenbrainz).
  • exportLovedTracks: Loved tracks backup in JSON and CSV.
  • exportLibrary: Artist catalog export with playcounts and metadata.
• Added full Zod schemas, unit tests, subpath exports (@ansango/lastfm-api/exporter), and Scalar OpenAPI registrations.

[github-actions]

✅ Test Summary

250 passed · 0 failed · 0 skipped

_{Run: 33220299673}

File	✅	❌	⏭️
track	27	0	0
inventory	6	0	0
insights	61	0	0
library	4	0	0
chart	6	0	0
geo	7	0	0
utils	4	0	0
tag	10	0	0
exporter	6	0	0
auth	9	0	0
user	23	0	0
artist	21	0	0
ci-summary	11	0	0
reports	5	0	0
album	15	0	0
pagination	5	0	0
transport	25	0	0
playlists	5	0	0
Total	250	0	0

All test names

Status	Test	Time
✅	track › track service > getInfo > routes to track.getInfo with artist and track, returns parsed payload	1ms
✅	track › track service > getInfo > passes optional mbid when provided	0ms
✅	track › track service > getSimilar > routes to track.getSimilar and returns parsed payload	0ms
✅	track › track service > getTags > routes to track.getTags with user, artist, and track, returns parsed payload	0ms
✅	track › track service > getTopTags > routes to track.getTopTags and returns parsed payload	0ms
✅	track › track service > search > routes to track.search with track query and returns parsed payload	0ms
✅	track › track service > getCorrection > routes to track.getCorrection unsigned with artist+track, returns the corrected identities	0ms
✅	track › track service > getCorrection > parses a no-correction response (empty correction list)	0ms
✅	track › track service > getCorrection > accepts absent optional corrected flags and @attr	0ms
✅	track › track service > scrobble (smoke through the service; transport behavior is in transport.test.ts) > scrobble succeeds end-to-end when session is on the config	1ms
✅	track › track service > scrobble (smoke through the service; transport behavior is in transport.test.ts) > scrobbleMany accepts a numeric timestamp per the updated schema	0ms
✅	track › track service > scrobble (smoke through the service; transport behavior is in transport.test.ts) > scrobbleMany rejects more than 50 tracks with a clear error	0ms
✅	track › track service > error handling > Last.fm error envelope becomes LastFmApiError	0ms
✅	track › track service > addTags > routes to track.addTags via signed POST with sk and comma-joined tags, returns void	0ms
✅	track › track service > addTags > fails before fetch when no session key is available	0ms
✅	track › track service > addTags > rejects more than 10 tags in the request schema	2ms
✅	track › track service > removeTag > routes to track.removeTag via signed POST with sk and single tag, returns void	0ms
✅	track › track service > removeTag > fails before fetch when no session key is available	0ms
✅	track › track service > love > routes to track.love via signed POST with sk, returns void	0ms
✅	track › track service > love > fails before fetch when no session key is available	0ms
✅	track › track service > unlove > routes to track.unlove via signed POST with sk, returns void	0ms
✅	track › track service > updateNowPlaying (regression — restored after #89 merge drop) > routes to track.updateNowPlaying with the minimum required body, returns the parsed nowplaying payload	0ms
✅	track › track service > updateNowPlaying (regression — restored after #89 merge drop) > forwards every optional field with exact wire casing and omits undefined	0ms
✅	track › track service > updateNowPlaying (regression — restored after #89 merge drop) > fails before fetch when no session key is available, with a sanitized error	0ms
✅	track › track service > updateNowPlaying (regression — restored after #89 merge drop) > parses an ignored now-playing response (code != 0) but does not throw	0ms
✅	track › track service > updateNowPlaying (regression — restored after #89 merge drop) > Last.fm error envelope becomes LastFmApiError	0ms
✅	track › track service > import coverage > track service is exposed from root, track entrypoint, and track.schemas entrypoint	0ms
✅	inventory › inventory: 56/56 canonical Last.fm methods > the inventory list itself contains exactly 56 entries	0ms
✅	inventory › inventory: 56/56 canonical Last.fm methods > all canonical methods exist on the LastFmClient as callable functions	0ms
✅	inventory › inventory: 56/56 canonical Last.fm methods > no duplicate canonical methods are listed	0ms
✅	inventory › inventory: 56/56 canonical Last.fm methods > every entry matches the namespace.method shape	0ms
✅	inventory › inventory: 56/56 canonical Last.fm methods > per-namespace breakdown matches the docs/api-coverage.md audit	0ms
✅	inventory › inventory: 56/56 canonical Last.fm methods > all canonical methods exist on LastFmCoreClient instance	0ms
✅	insights › insights service > pure algorithms: diversity > returns zeros for empty count map	0ms
✅	insights › insights service > pure algorithms: diversity > returns 0 entropy and 0 normalized for single item	0ms
✅	insights › insights service > pure algorithms: diversity > returns 1.0 normalized entropy for perfectly uniform distribution	0ms
✅	insights › insights service > pure algorithms: diversity > returns < 1.0 normalized entropy for skewed distribution	0ms
✅	insights › insights service > pure algorithms: diversity > topNShare calculates correct concentration shares	0ms
✅	insights › insights service > pure algorithms: periods > resolves overall period	0ms
✅	insights › insights service > pure algorithms: periods > resolves 7day and weekly periods	0ms
✅	insights › insights service > pure algorithms: periods > resolves monthly and 1month periods	0ms
✅	insights › insights service > pure algorithms: bio sanitization > stripWiki cleans wiki links and HTML tags	0ms
✅	insights › insights service > pure algorithms: bio sanitization > summarizeBio truncates cleanly on word boundary	0ms
✅	insights › insights service > pure algorithms: bio sanitization > summarizeBio returns full string if within maxChars	0ms
✅	insights › insights service > pure algorithms: hours histogram > bucketTimestamp maps UTC hour and ISO weekday (Mon=0..Sun=6)	0ms
✅	insights › insights service > pure algorithms: hours histogram > buildHourHistogram computes counts, peaks, and shares	0ms
✅	insights › insights service > pure algorithms: binges > findBinges detects consecutive plays of the same artist	0ms
✅	insights › insights service > pure algorithms: binges > breaks binge run when gap exceeds maxGapSeconds	0ms
✅	insights › insights service > pure algorithms: trends diff > diffRankings categorizes risers, fallers, newcomers, departures	0ms
✅	insights › insights service > pure algorithms: discoveries > findNewArtists filters out baseline and sorts by firstSeen	0ms
✅	insights › insights service > pure algorithms: mood classifier > classifies euphoric and energetic tags	1ms
✅	insights › insights service > pure algorithms: mood classifier > classifies ambient and melancholic tags	0ms
✅	insights › insights service > pure algorithms: personality archetypes > scores Devotee highest when top1Share is very high	0ms
✅	insights › insights service > pure algorithms: personality archetypes > scores Nocturnal highest when night listening dominates	0ms
✅	insights › insights service > pure algorithms: compare users > jaccard computes correct overlap fractions	0ms
✅	insights › insights service > pure algorithms: compare users > compareArtists computes mutual overlap and ranking	0ms
✅	insights › insights service > getSummary > fetches top artists, tracks, albums, tags in parallel and computes summary + diversity	3ms
✅	insights › insights service > getSummary > returns undefined diversity when fewer than 2 artists are returned	0ms
✅	insights › insights service > getSummary > propagates LastFmApiError if any sub-call fails	0ms
✅	insights › insights service > getNowPlaying > enriches currently playing track with artist bio and similar artists	2ms
✅	insights › insights service > getNowPlaying > handles empty track history gracefully	0ms
✅	insights › insights service > getHoursHistogram > paginates recenttracks and calculates diurnal histogram	1ms
✅	insights › insights service > getBinges > paginates recent tracks, sorts ascending, and identifies streaks	1ms
✅	insights › insights service > getTrends > calculates artist ranking diff between periods	1ms
✅	insights › insights service > getDiscoveries > identifies new artist discoveries against baseline roster	1ms
✅	insights › insights service > getMood > fetches user tags & top artist tags, returns classified mood profile	1ms
✅	insights › insights service > getPersonality > assembles features and returns listener archetype	2ms
✅	insights › insights service > compareUsers > fetches both users top artists and calculates Jaccard affinity and shared artists	1ms
✅	insights › insights service > getObscurityScore > evaluates top artists and computes weighted obscurity score, gems, and anchors	2ms
✅	insights › insights service > getObscurityScore > handles empty top artists gracefully with fallback score	0ms
✅	insights › insights service > getForgottenFavorites > identifies historical top artists absent from recent listening	1ms
✅	insights › insights service > getObsessions > detects high-density obsession window in recent track stream	2ms
✅	insights › insights service > getListeningStreaks > computes consecutive streak days and dry spells	1ms
✅	insights › insights service > getListeningHeatmap > generates calendar days with intensity levels 0..4	1ms
✅	insights › insights service > getAlbumHabits > analyzes sequential album tracks and classifies listener profile	2ms
✅	insights › insights service > getGenreBreakdown > filters noise tags and calculates HHI concentration index	1ms
✅	insights › insights service > getGenreEvolution > computes rising, fading, and new genres between periods	2ms
✅	insights › insights service > getSmartRecommendations > traverses similarity graph from user seeds and returns ranked candidates	2ms
✅	insights › insights service > getBridgeArtists > identifies artists appearing across two distinct genre charts	3ms
✅	insights › insights service > compareTasteGroup > computes pairwise matrix, consensus artists, and outlier for 3 users	2ms
✅	insights › insights service > schema exports and client wiring > factory createInsightsService instantiates InsightsService with all wired methods	0ms
✅	insights › insights service > schema exports and client wiring > exposes insights service via createClient helper	0ms
✅	insights › insights service > schema exports and client wiring > insightsCompareRequestSchema validates inputs	0ms
✅	insights › insights service > schema exports and client wiring > insightsObscurityRequestSchema validates inputs	0ms
✅	insights › insights service > schema exports and client wiring > insightsForgottenFavoritesRequestSchema validates inputs	0ms
✅	insights › insights service > schema exports and client wiring > insightsObsessionsRequestSchema validates inputs	0ms
✅	insights › insights service > schema exports and client wiring > insightsStreaksRequestSchema validates inputs	0ms
✅	insights › insights service > schema exports and client wiring > insightsHeatmapRequestSchema validates inputs	0ms
✅	insights › insights service > schema exports and client wiring > insightsAlbumHabitsRequestSchema validates inputs	0ms
✅	insights › insights service > schema exports and client wiring > insightsGenreBreakdownRequestSchema validates inputs	0ms
✅	insights › insights service > schema exports and client wiring > insightsGenreEvolutionRequestSchema validates inputs	0ms
✅	insights › insights service > schema exports and client wiring > insightsRecommendationsRequestSchema validates inputs	0ms
✅	insights › insights service > schema exports and client wiring > insightsBridgeArtistsRequestSchema validates inputs	0ms
✅	insights › insights service > schema exports and client wiring > insightsCompareTasteGroupRequestSchema validates inputs	0ms
✅	library › library service > getArtists > routes to library.getArtists with user and returns parsed payload	0ms
✅	library › library service > getArtists > passes limit and page when provided	0ms
✅	library › library service > error handling > Last.fm error envelope becomes LastFmApiError	0ms
✅	library › library service > import coverage > library service is exposed from root, library entrypoint, and library.schemas entrypoint	0ms
✅	chart › chart service > getTopArtists > routes to chart.getTopArtists and returns parsed payload	0ms
✅	chart › chart service > getTopArtists > passes limit and page when provided	0ms
✅	chart › chart service > getTopTags > routes to chart.getTopTags and returns parsed payload	0ms
✅	chart › chart service > getTopTracks > routes to chart.getTopTracks and returns parsed payload	0ms
✅	chart › chart service > error handling > Last.fm error envelope becomes LastFmApiError	0ms
✅	chart › chart service > import coverage > chart service is exposed from root, chart entrypoint, and chart.schemas entrypoint	0ms
✅	geo › geo service > getTopArtists > routes to geo.getTopArtists with country and returns parsed payload	0ms
✅	geo › geo service > getTopArtists > passes limit and page when provided	0ms
✅	geo › geo service > getTopArtists > uses GET (no body) and no Content-Type header	0ms
✅	geo › geo service > getTopTracks > routes to geo.getTopTracks with country and location	0ms
✅	geo › geo service > error handling > Last.fm error envelope becomes LastFmApiError with code and message	0ms
✅	geo › geo service > error handling > HTTP 500 with non-JSON body becomes LastFmApiError without exposing a fake api_sig	0ms
✅	geo › geo service > import coverage > geo service is exposed from root, geo entrypoint, and geo.schemas entrypoint	0ms
✅	utils › issue #58: default baseUrl > LastFmClient constructed without baseUrl + getInfo does not throw "Failed to parse URL from undefined"	0ms
✅	utils › issue #58: default baseUrl > buildUrl defaults baseUrl when config.baseUrl is undefined	0ms
✅	utils › issue #58: default baseUrl > buildAuthUrl defaults baseUrl when config.baseUrl is undefined	0ms
✅	utils › issue #58: default baseUrl > buildUrl honours an explicit baseUrl when provided	0ms
✅	tag › tag service > getInfo > routes to tag.getInfo with tag and returns parsed payload	0ms
✅	tag › tag service > getInfo > passes lang when provided	0ms
✅	tag › tag service > getSimilar > routes to tag.getSimilar and returns parsed payload	0ms
✅	tag › tag service > getTopAlbums > routes to tag.getTopAlbums and returns parsed payload	0ms
✅	tag › tag service > getTopArtists > routes to tag.getTopArtists and returns parsed payload	0ms
✅	tag › tag service > getTopTags > routes to tag.getTopTags and returns parsed payload	0ms
✅	tag › tag service > getTopTracks > routes to tag.getTopTracks and returns parsed payload	0ms
✅	tag › tag service > getWeeklyChartList > routes to tag.getWeeklyChartList and returns parsed payload	0ms
✅	tag › tag service > error handling > Last.fm error envelope becomes LastFmApiError	0ms
✅	tag › tag service > import coverage > tag service is exposed from root, tag entrypoint, and tag.schemas entrypoint	0ms
✅	exporter › exporter service > exportScrobbles > exports scrobbles to JSON, CSV, JSONL, and ListenBrainz with checkpoint metadata	1ms
✅	exporter › exporter service > exportScrobbles > exports to CSV format properly escaping columns	0ms
✅	exporter › exporter service > exportLovedTracks > exports loved tracks to CSV and JSON	1ms
✅	exporter › exporter service > exportLibrary > exports user artist library to CSV and JSON	1ms
✅	exporter › exporter service > schema exports and client wiring > factory createExporterService instantiates ExporterService with all wired methods	0ms
✅	exporter › exporter service > schema exports and client wiring > exposes exporter service via createClient helper	0ms
✅	auth › auth service > getSession (regression — unchanged by #72) > routes to auth.getSession with token and api_sig, returns parsed payload	0ms
✅	auth › auth service > getSession (regression — unchanged by #72) > throws LastFmApiError on auth failure	0ms
✅	auth › auth service > getToken > works without a request object and signs GET with no sk	0ms
✅	auth › auth service > getToken > response includes a pre-built authUrl pointing at last.fm/api/auth	0ms
✅	auth › auth service > getToken > authUrl is independent of the network roundtrip (built from the returned token)	0ms
✅	auth › auth service > getToken > signature is reproducible from a fixed vector (method + api_key only)	0ms
✅	auth › auth service > getToken > preserves caller-provided signal and safe headers	0ms
✅	auth › auth service > getToken > Last.fm error envelope becomes LastFmApiError	0ms
✅	auth › auth service > import coverage > auth service is exposed from root, auth entrypoint, and auth.schemas entrypoint	0ms
✅	user › user service > getInfo > routes to user.getInfo with user, returns parsed payload	0ms
✅	user › user service > getFriends > routes to user.getFriends with user, returns parsed payload	0ms
✅	user › user service > getFriends > passes limit and page when provided	0ms
✅	user › user service > getLovedTracks > routes to user.getLovedTracks with user, returns parsed payload	0ms
✅	user › user service > getRecentTracks > routes to user.getRecentTracks with user, returns parsed payload	0ms
✅	user › user service > getTopAlbums > routes to user.getTopAlbums and returns parsed payload	0ms
✅	user › user service > getTopAlbums > passes period when provided	0ms
✅	user › user service > getTopArtists > routes to user.getTopArtists and returns parsed payload	0ms
✅	user › user service > getTopTags > routes to user.getTopTags and returns parsed payload	0ms
✅	user › user service > getTopTracks > routes to user.getTopTracks and returns parsed payload	0ms
✅	user › user service > getWeeklyAlbumChart > routes to user.getWeeklyAlbumChart and returns parsed payload	0ms
✅	user › user service > getWeeklyArtistChart > routes to user.getWeeklyArtistChart and returns parsed payload	0ms
✅	user › user service > getWeeklyChartList > routes to user.getWeeklyChartList and returns parsed payload	0ms
✅	user › user service > getWeeklyTrackChart > routes to user.getWeeklyTrackChart and returns parsed payload	0ms
✅	user › user service > getPersonalTags > routes to user.getPersonalTags with user+tag+taggingtype, returns the artist variant	0ms
✅	user › user service > getPersonalTags > routes for the album variant and parses the album entity	0ms
✅	user › user service > getPersonalTags > routes for the track variant and parses the track entity	0ms
✅	user › user service > getPersonalTags > passes limit and page when provided	0ms
✅	user › user service > getPersonalTags > parses empty results (no personal tags)	0ms
✅	user › user service > getPersonalTags > rejects an invalid taggingtype at the request schema	1ms
✅	user › user service > error handling > Last.fm error envelope becomes LastFmApiError	0ms
✅	user › user service > import coverage > user service is exposed from root, user entrypoint, and user.schemas entrypoint	0ms
✅	user › user service > import coverage > generic narrowing: literal taggingtype resolves to the matching response	0ms
✅	artist › artist service > getInfo > routes to artist.getInfo with artist, returns parsed payload	0ms
✅	artist › artist service > getInfo > passes optional mbid, lang, and user when provided	0ms
✅	artist › artist service > getTags > routes to artist.getTags with artist, returns parsed payload	0ms
✅	artist › artist service > getTags > passes limit when provided	0ms
✅	artist › artist service > getSimilar > routes to artist.getSimilar and returns parsed payload	0ms
✅	artist › artist service > getSimilar > passes limit when provided	0ms
✅	artist › artist service > getTopAlbums > routes to artist.getTopAlbums and returns parsed payload	0ms
✅	artist › artist service > getTopTags > routes to artist.getTopTags and returns parsed payload	0ms
✅	artist › artist service > getTopTracks > routes to artist.getTopTracks and returns parsed payload	0ms
✅	artist › artist service > search > routes to artist.search with artist query and returns parsed payload	0ms
✅	artist › artist service > getCorrection > routes to artist.getCorrection unsigned with artist, returns the corrected identity	0ms
✅	artist › artist service > getCorrection > parses a no-correction response (empty correction list)	0ms
✅	artist › artist service > getCorrection > parses a response without optional @attr on the correction entry	0ms
✅	artist › artist service > error handling > Last.fm error envelope becomes LastFmApiError	0ms
✅	artist › artist service > addTags > routes to artist.addTags via signed POST with sk and comma-joined tags, returns void	0ms
✅	artist › artist service > addTags > per-request sk overrides config.sessionKey	0ms
✅	artist › artist service > addTags > fails before fetch when no session key is available, with a clear sanitized error	0ms
✅	artist › artist service > addTags > rejects more than 10 tags in the request schema	0ms
✅	artist › artist service > removeTag > routes to artist.removeTag via signed POST with sk and single tag, returns void	0ms
✅	artist › artist service > removeTag > fails before fetch when no session key is available	0ms
✅	artist › artist service > import coverage > artist service is exposed from root, artist entrypoint, and artist.schemas entrypoint	0ms
✅	ci-summary › parse() > parses bun output without group prefix (local default)	0ms
✅	ci-summary › parse() > accepts ::group:: prefix (real bytes bun writes in CI)	0ms
✅	ci-summary › parse() > accepts ##[group] prefix (how the runner renders the same bytes)	0ms
✅	ci-summary › parse() > returns empty array when no test files are present	0ms
✅	ci-summary › parse() > does not match nested paths that are not under src/tests/	0ms
✅	ci-summary › buildMarkdown() > aggregates counts correctly and picks a ❌ head when any test failed	0ms
✅	ci-summary › buildMarkdown() > picks ✅ when everything passed and ⚠️ when only skipped remain	0ms
✅	ci-summary › buildMarkdown() > per-file table strips the src/tests/ prefix and .test.ts suffix	0ms
✅	ci-summary › buildMarkdown() > includes the run URL in the header sub-line	0ms
✅	ci-summary › buildMarkdown() > contains the dedup marker so a re-run can PATCH instead of POSTing again	0ms
✅	ci-summary › buildMarkdown() > collapsible section lists every test with its emoji and elapsed ms	0ms
✅	reports › reports service > getWrapped > generates yearly wrapped summary with seasonal profiles and top entities	2ms
✅	reports › reports service > getMilestones > detects milestones and calculates next milestone projection	1ms
✅	reports › reports service > getMonthlyDigest > compares current month to previous month and returns growth delta	1ms
✅	reports › reports service > schema exports and client wiring > factory createReportsService instantiates ReportsService with all wired methods	0ms
✅	reports › reports service > schema exports and client wiring > exposes reports service via createClient helper	0ms
✅	album › album service > getInfo > routes to album.getInfo with artist and album, returns parsed payload	0ms
✅	album › album service > getInfo > passes optional mbid, username, and lang when provided	0ms
✅	album › album service > getTags > routes to album.getTags with user, artist, and album, returns parsed payload	0ms
✅	album › album service > getTopTags > routes to album.getTopTags and returns parsed payload	0ms
✅	album › album service > search > routes to album.search with album query, returns parsed payload	0ms
✅	album › album service > search > passes limit and page when provided	0ms
✅	album › album service > error handling > Last.fm error envelope becomes LastFmApiError	0ms
✅	album › album service > addTags > routes to album.addTags via signed POST with sk and comma-joined tags, returns void	0ms
✅	album › album service > addTags > per-request sk overrides config.sessionKey	0ms
✅	album › album service > addTags > fails before fetch when no session key is available, with a clear sanitized error	0ms
✅	album › album service > addTags > rejects more than 10 tags in the request schema	0ms
✅	album › album service > addTags > Last.fm error envelope becomes LastFmApiError	0ms
✅	album › album service > removeTag > routes to album.removeTag via signed POST with sk and single tag, returns void	0ms
✅	album › album service > removeTag > fails before fetch when no session key is available	0ms
✅	album › album service > import coverage > album service is exposed from root, album entrypoint, and album.schemas entrypoint	0ms
✅	pagination › core/pagination > iterateItems streams items across multiple pages	0ms
✅	pagination › core/pagination > iterateItems respects maxPages limit	0ms
✅	pagination › core/pagination > iterateItems respects maxItems limit	0ms
✅	pagination › core/pagination > collectAll collects all items into an array	0ms
✅	pagination › core/pagination > iteratePages yields full page responses	0ms
✅	transport › signed POST transport (issue #68) > single track.scrobble > sends a signed POST with form body; nothing signed in the URL	0ms
✅	transport › signed POST transport (issue #68) > single track.scrobble > signature excludes format and api_sig and is reproducible from a fixed vector	0ms
✅	transport › signed POST transport (issue #68) > single track.scrobble > coerces numeric timestamp to string in the wire body	0ms
✅	transport › signed POST transport (issue #68) > single track.scrobble > passes through optional album	0ms
✅	transport › signed POST transport (issue #68) > batch track.scrobble > preserves indexed artist[0], track[0], timestamp[0], album[0] keys	0ms
✅	transport › signed POST transport (issue #68) > batch track.scrobble > does not put any write parameter in the URL	0ms
✅	transport › signed POST transport (issue #68) > session resolution and pre-fetch failures > request sk overrides config.sessionKey	0ms
✅	transport › signed POST transport (issue #68) > session resolution and pre-fetch failures > config.sessionKey is used when request does not provide sk	0ms
✅	transport › signed POST transport (issue #68) > session resolution and pre-fetch failures > missing session fails before fetch with a clear, sanitized error	0ms
✅	transport › signed POST transport (issue #68) > session resolution and pre-fetch failures > missing sharedSecret fails before fetch with a clear, sanitized error	0ms
✅	transport › signed POST transport (issue #68) > reserved field protection > caller cannot override method, api_key, api_sig, or format via params	0ms
✅	transport › signed POST transport (issue #68) > reserved field protection > caller cannot replace method, body, or Content-Type via init	0ms
✅	transport › signed POST transport (issue #68) > RequestInit preservation > preserves caller-provided signal	0ms
✅	transport › signed POST transport (issue #68) > RequestInit preservation > preserves safe caller-provided headers (besides Content-Type)	0ms
✅	transport › signed POST transport (issue #68) > error routing > HTTP failure with no JSON body surfaces as LastFmApiError	0ms
✅	transport › signed POST transport (issue #68) > error routing > Last.fm error envelope surfaces as LastFmApiError with code and message	0ms
✅	transport › signed POST transport (issue #68) > error routing > empty success body is returned, not turned into an error	0ms
✅	transport › signed POST transport (issue #68) > baseUrl handling > uses default baseUrl when config.baseUrl is undefined	0ms
✅	transport › signed POST transport (issue #68) > baseUrl handling > honours an explicit config.baseUrl	0ms
✅	transport › signed POST transport (issue #68) > session-less signed methods (forward-compat for #72) > requiresSession: false omits sk from signature and body	0ms
✅	transport › signed POST transport (issue #68) > session-less signed methods (forward-compat for #72) > requiresSession: false does not fail when config has no sessionKey	0ms
✅	transport › signed POST transport (issue #68) > integration through LastFmClient.track > scrobble and postTrackScrobble share the same implementation	0ms
✅	transport › signed POST transport (issue #68) > integration through LastFmClient.track > scrobbleMany and postBatchTrackScrobble share the same implementation	0ms
✅	transport › signed POST transport (issue #68) > integration through LastFmClient.track > scrobble routes a numeric timestamp through the service	0ms
✅	transport › signed POST transport (issue #68) > integration through LastFmClient.track > scrobbleMany preserves indexed batch keys through the service	0ms
✅	playlists › playlists service > generate > generates heavy-rotation playlist with M3U and CSV formats	2ms
✅	playlists › playlists service > generate > generates time-capsule playlist skipping recent tracks	0ms
✅	playlists › playlists service > export formats > exports custom tracks to M3U and CSV formats	0ms
✅	playlists › playlists service > schema exports and client wiring > factory createPlaylistsService instantiates PlaylistsService with all wired methods	0ms
✅	playlists › playlists service > schema exports and client wiring > exposes playlists service via createClient helper	0ms