Optimize Emby caching and image resize concurrency

internal/service/media_release_sort.go

@@ -32,6 +32,18 @@ func mediaReleaseOrderSQL(desc bool) string {
 	return fmt.Sprintf("media.release_date %s, media.year %s, media.created_at %s, media.id %s", dir, dir, dir, dir)
 }
 
+// embyMediaReleaseSortTime matches the original payload-based ordering used by
+// the Emby movie-library merge: release date, then year, then created_at.
+func embyMediaReleaseSortTime(media model.Media) time.Time {
+	if t, ok := embyPremiereDate(media.ReleaseDate); ok {
+		return t
+	}
+	if media.Year > 0 {
+		return time.Date(media.Year, time.December, 31, 0, 0, 0, 0, time.UTC)
+	}
+	return media.CreatedAt
+}
+
 func embyPremiereDate(value string) (time.Time, bool) {
 	value = normalizeReleaseDate(value)
 	if value == "" {