Rewrite writeErr(w, err) to wrap *apierror.Error via apierror.From,
preserving the existing {"error": {"code", "message"}} wire envelope.
Add writeErrWithLog helper for 500-class errors that need an operator
log line. Migrate all 13 admin_*.go handler files (~76 call sites) to
the new signature; T3 will sweep the remaining api package.
The old 4-arg writeErr is removed, so non-admin call sites in
internal/api will not compile until T3 lands. This is by design — T2
and T3 are paired.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Admin-only handler. Calls tracks.RemoveTrack with the unmonitor flag
parsed from the query string. ErrNotFound -> 404; everything else
unexpected -> 500. Lidarr-side failures during unmonitor flow as
lidarr_unmonitor_failed: true in the success envelope (non-fatal —
the file + DB delete already completed).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen