Fix coordinator worker integration

coordinator/internal/usecase/artifact.go

@@ -29,7 +29,7 @@ func (uc *UploadArtifact) Execute(ctx context.Context, in UploadArtifactInput) (
 	}
 	// Only the worker holding the current lease at this attempt may upload the
 	// task's output — the coordinator never trusts an ownership claim on faith.
-	if !task.IsLeaseHeldBy(in.WorkerID, in.Attempt) {
+	if !task.IsLeaseHeldBy(in.WorkerID, in.Attempt, uc.clk.Now()) {
 		return nil, domain.ErrLeaseConflict
 	}
 

coordinator/internal/usecase/task.go

@@ -91,7 +91,8 @@ func (uc *RenewLease) Execute(ctx context.Context, in RenewLeaseInput) (*domain.
 		if err != nil {
 			return err
 		}
-		if err := task.RenewLease(in.WorkerID, in.Attempt, uc.clock.Now().Add(uc.leaseDuration)); err != nil {
+		now := uc.clock.Now()
+		if err := task.RenewLease(in.WorkerID, in.Attempt, now, now.Add(uc.leaseDuration)); err != nil {
 			return err
 		}
 		if err := uc.tasks.Update(ctx, task); err != nil {