login.test.ts: composed addServer -> setActiveServer -> setLoggedIn flow,
failed-login leaves prior state intact, addServer assigns unique ids,
setConnecting / setConnectionError independence, logout clears
isLoggedIn + musicFolders but keeps server entry, Last.fm session
(setLastfm / connectLastfm / disconnectLastfm contracts).
servers.test.ts: addServer / updateServer (patch by id, no-op on unknown),
setActiveServer (clears musicFolders), removeServer (non-active no-effect,
active picks newServers[0] fallback, last server -> null + isLoggedIn
false, cleans per-server bookkeeping maps), getActiveServer / getBaseUrl
selectors. Includes the gapless / crossfade mutex regression test from
the v2 plan section 4.3 -- callers clear the other flag before setting,
the setters themselves do NOT auto-clear (contract pin).
persistence.test.ts: hydration loads existing localStorage shape, defaults
missing fields, preserves saved values verbatim. Robust to corrupt JSON
and missing top-level state. onRehydrate migrations: clears conflicting
hotCacheEnabled + preloadMode!=off legacy combo, keeps hotCache when
preload was already off, migrates legacy waveform seekbarStyle to truewave,
strips removed animationMode / reducedAnimations fields. partialize strips
musicFolders. Includes the synchronous-storage invariant regression from
the v2 plan section 2 (CLAUDE.md gotcha) -- getActiveServer is visible in
the same tick after addServer + setActiveServer with no await.
settings.test.ts: API-pin sweep across 22 trivial setters via it.each
(rename-resistant), focused tests for setters with logic (clamping in
setTrackPreviewStartRatio / setTrackPreviewDurationSec / setRandomMixSize,
boolean coercion in setTrackPreviewsEnabled, finite-number guard in
setLoudnessPreAnalysisAttenuationDb, default reset in
resetLoudnessPreAnalysisAttenuationDbDefault), per-server bookkeeping
contracts (setEntityRatingSupport / setAudiomuseNavidromeEnabled
positive-opt-in semantics), enum-value setters
(setPreloadMode / setDiscordCoverSource / setLoggingMode / setReplayGainMode /
setNormalizationEngine / setLyricsMode), genre blacklist + audio output
device replacement.
authStore.ts coverage 45.37% -> 79.29% lines (target was 60%). authStore.ts
not yet added to the hot-path gate -- want to see it stable across a few
real PRs first per the gate's curation rule.
Frank Stellmacher