feat: media duplicate purge, part 2 of 3: the automatic purge scheduler (Go only)

internal/domain/purge/purgeRepositoryInterface.go

@@ -1,6 +1,9 @@
 package purge
 
+import "time"
+
 type Repository interface {
 	Get() (Settings, error)
 	Save(settings Settings) error
+	SaveLastRun(at time.Time, merged int, articlesUpdated int) error
 }