Two new sqlc queries replace three sequential per-album round trips
that were dominating detail-screen latency.
GetAlbumWithArtist: handleGetAlbum was doing GetAlbumByID then
GetArtistByID — separate round trips for one logical lookup. The new
query joins albums + artists with sqlc.embed and returns both in one
SELECT. Detail-page DB cost: 3 trips → 2.
ListAlbumsByArtistWithTrackCount: handleGetArtist was loading the
artist's album list, then issuing one CountTracksByAlbum per album to
populate track_count. On a 30-album artist that's 32 sequential
queries — each ~5ms over a local DB, ~30ms over a remote one. The
new query embeds the album row + a correlated count(*) subquery, so
every album's track count comes back in one SELECT regardless of
album count. Detail-page DB cost: 1 + N → 1 + 1.
Together these account for the bulk of cold-cache navigation latency
on the Flutter client. Combined with the existing SWR + nav
hydration on the client side, detail screens should render their
header instantly and the body within one round trip instead of
N+constant.
Replace handleListArtists alpha branch with ListArtistsAlphaWithCovers
(drops N+1 per-artist album lookup). Register /api/home and
/api/library/albums in api.go.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Wires ListArtistTracksForUser (Task 3 SQL) to a new handler that returns
all quarantine-filtered tracks for an artist as a flat TrackRef list.
404 when the artist doesn't exist. Route registered in Mount().
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
CI's golangci-lint run flagged three files; two pre-existed this
branch but the Plan 3 seedTrackWithFile struct-literal alignment
is new. Applying gofmt across all three keeps the lint baseline clean.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
bvandeusen