Final commit.

lib/feature/delivery/detail/bloc/workflow_bloc.dart

@@ -0,0 +1,46 @@
+import 'package:flutter_bloc/flutter_bloc.dart';
+
+import 'workflow_event.dart';
+import 'workflow_state.dart';
+
+/// Bloc, der den Detail-Workflow einer einzelnen Lieferung trägt.
+///
+/// Pro `DeliveryDetail`-Page-Push neu instanziert (per `BlocProvider` direkt
+/// in der Page), Lifetime endet beim Pop. Strukturelle Persistenzen
+/// (Notizen speichern, Artikel entfernen, Complete) gehen NICHT durch
+/// diesen Bloc, sondern direkt am globalen `TourBloc` — der Workflow-Bloc
+/// trägt nur Step-State + lokale Drafts.
+class DeliveryWorkflowBloc
+    extends Bloc<DeliveryWorkflowEvent, DeliveryWorkflowState> {
+  DeliveryWorkflowBloc({required String deliveryId})
+      : super(DeliveryWorkflowState.initial(deliveryId)) {
+    on<WorkflowGoToStep>((e, emit) => emit(state.copyWith(step: e.step)));
+    on<WorkflowNextStep>((e, emit) {
+      final next = state.step.index + 1;
+      if (next < WorkflowStep.values.length) {
+        emit(state.copyWith(step: WorkflowStep.values[next]));
+      }
+    });
+    on<WorkflowPreviousStep>((e, emit) {
+      final prev = state.step.index - 1;
+      if (prev >= 0) {
+        emit(state.copyWith(step: WorkflowStep.values[prev]));
+      }
+    });
+    on<WorkflowAddPendingImage>((e, emit) {
+      final next = [
+        ...state.pendingImageNotes,
+        PendingImageNote(file: e.file, pickedAt: DateTime.now()),
+      ];
+      emit(state.copyWith(pendingImageNotes: next));
+    });
+    on<WorkflowRemovePendingImage>((e, emit) {
+      if (e.index < 0 || e.index >= state.pendingImageNotes.length) return;
+      final next = [...state.pendingImageNotes]..removeAt(e.index);
+      emit(state.copyWith(pendingImageNotes: next));
+    });
+    on<WorkflowOverridePaymentMethod>((e, emit) => emit(
+          state.copyWith(paymentMethodOverrideId: e.paymentMethodId),
+        ));
+  }
+}