Photo backfill for failed dinners without a photo (Maestro 36c40130, Feature 23 task 1) (#205)

Co-authored-by: orchestrator-agent <20+orchestrator-agent@code.cubecraftcreations.com>

internal/dinners/dinners.go

@@ -138,6 +138,8 @@ type Service struct {
 	grounder  *recipes.Grounder
 	logger    *slog.Logger
 	groundJob *jobs.Kind[GroundJob]
+	// backfillJob enqueues KindBackfillPhotos jobs.
+	backfillJob *jobs.Kind[BackfillJob]
 	// wake is called after every committed change to a dinner's method or
 	// minutes, which can move its crock-pot start reminder.
 	wake func()
@@ -162,8 +164,8 @@ type Service struct {
 
 // NewService returns a service over st that grounds dinners with grounder,
 // calls wake (the scheduler's Wake) after every committed change to a
-// dinner's method or minutes, and registers the KindGroundDinner job on
-// runner, which must not have started yet.
+// dinner's method or minutes, and registers the KindGroundDinner and
+// KindBackfillPhotos jobs on runner, which must not have started yet.
 func NewService(st *store.Store, grounder *recipes.Grounder, runner *jobs.Runner, wake func(), logger *slog.Logger) (*Service, error) {
 	switch {
 	case st == nil:
@@ -184,6 +186,14 @@ func NewService(st *store.Store, grounder *recipes.Grounder, runner *jobs.Runner
 		return nil, err
 	}
 	s.groundJob = kind
+	backfill, err := jobs.Register(runner, KindBackfillPhotos, s.runBackfillJob)
+	if err != nil {
+		return nil, err
+	}
+	if err := backfill.ServiceOnly(); err != nil {
+		return nil, err
+	}
+	s.backfillJob = backfill
 	return s, nil
 }