Nine golangci-lint failures accumulated across M7 #352, #372, and
6d1709c that were never surfaced because test-go never ran green long
enough to reach the lint step. The first push to land cleanly through
vet (the M7 #363 slice) ran lint and exposed them.
- errcheck: discard the error on defer Close() in collage.go,
collage_test.go, and server_test.go.
- gofmt -s: re-run on config.go and playlists_test.go.
- goimports: move the stray "time" import from the local-module group
to stdlib in server_test.go.
- revive unused-parameter: rename ctx to _ on stubScanner.Scan and
fakeLidarrUnmonitorer.UnmonitorTrack (test stubs); on
tracks.Service's adminID, add //nolint:revive directive rather than
renaming because the HTTP handler passes admin.ID (a real authed-user
UUID) and the existing comment already flags it as reserved for the
audit-log follow-up.
AppendTracks / RemoveTrack / Reorder run in single transactions and
update the denormalized rollups (track_count, duration_sec). Reorder
uses a +10000 offset to bump every row out of the position range
before writing the new positions, sidestepping PK conflicts during
rewrite.
GenerateCollage composes a 600x600 JPEG from the first 4 album
covers, with a slate-tinted fallback for missing cells. Synchronous,
called inline after every mutating operation. SVG-rasterized fallback
is a follow-up — slice 1 ships with a solid placeholder.
bvandeusen