refactor: Projektstruktur in app/ und backend/ aufgeteilt

app/test/views/cargo_items_view_test.dart

@@ -0,0 +1,86 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:votianlt_app/cargo_items_view.dart';
+import 'package:votianlt_app/models/delivery_station.dart';
+import 'package:votianlt_app/models/tasks/confirmation_task.dart';
+
+void main() {
+  group('deliveryStationCardBackgroundColor', () {
+    DeliveryStation buildStation(List<ConfirmationTask> tasks) {
+      return DeliveryStation(
+        stationOrder: 0,
+        company: 'ACME',
+        salutation: null,
+        firstName: 'Max',
+        lastName: 'Mustermann',
+        phone: '12345',
+        street: 'Musterstrasse',
+        houseNumber: '1',
+        addressAddition: '',
+        zip: '12345',
+        city: 'Berlin',
+        deliveryDate: '2026-03-10',
+        deliveryTime: '10:00',
+        tasks: tasks,
+      );
+    }
+
+    ConfirmationTask buildTask(String id, {bool completed = false}) {
+      return ConfirmationTask(
+        id: id,
+        jobId: 'job-1',
+        buttonText: 'Bestaetigen',
+        completed: completed,
+      );
+    }
+
+    test('returns light green when all station tasks are completed', () {
+      final station = buildStation([
+        buildTask('task-1', completed: true),
+        buildTask('task-2', completed: true),
+      ]);
+
+      final color = deliveryStationCardBackgroundColor(station, const {});
+
+      expect(color, Colors.green[50]);
+    });
+
+    test('returns null when only some tasks are completed', () {
+      final station = buildStation([
+        buildTask('task-1', completed: true),
+        buildTask('task-2'),
+      ]);
+
+      final color = deliveryStationCardBackgroundColor(station, const {});
+
+      expect(color, isNull);
+    });
+
+    test('returns null when no tasks are completed', () {
+      final station = buildStation([buildTask('task-1'), buildTask('task-2')]);
+
+      final color = deliveryStationCardBackgroundColor(station, const {});
+
+      expect(color, isNull);
+    });
+
+    test('returns null when station has no tasks', () {
+      final station = buildStation(const []);
+
+      final color = deliveryStationCardBackgroundColor(station, const {});
+
+      expect(color, isNull);
+    });
+
+    test('prefers local task status over incomplete task payload', () {
+      final station = buildStation([buildTask('task-1'), buildTask('task-2')]);
+
+      final color = deliveryStationCardBackgroundColor(station, const {
+        'task-1': true,
+        'task-2': true,
+      });
+
+      expect(color, Colors.green[50]);
+    });
+  });
+}