Initial commit: CookIT recipe collection and week planner

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

test/support/fixtures.dart

@@ -0,0 +1,55 @@
+import 'dart:io';
+
+import 'package:cookit/src/recipes/models/recipe.dart';
+import 'package:cookit/src/recipes/photo_store.dart';
+
+final testTime = DateTime.utc(2026, 10, 20, 12);
+
+Recipe recipe({
+  String id = 'r1',
+  String name = 'Focaccia',
+  String? courseId,
+  List<String> tags = const [],
+  List<IngredientGroup>? ingredientGroups,
+  List<StepSection>? stepSections,
+  List<String> photos = const [],
+  bool favourite = false,
+  List<String> reviewReasons = const [],
+}) => Recipe(
+  id: id,
+  name: name,
+  courseId: courseId,
+  tags: tags,
+  servings: 4,
+  prepMinutes: 30,
+  cookMinutes: 20,
+  calories: const Calories(775, CaloriesBasis.perServing),
+  ingredientGroups:
+      ingredientGroups ??
+      const [
+        IngredientGroup(
+          lines: [
+            IngredientLine(amount: 300, unitKey: 'gram', name: 'Mehl'),
+            IngredientLine(amount: 2, amountMax: 3, unitKey: 'tablespoon', name: 'Olivenöl', remark: 'gutes'),
+          ],
+        ),
+        IngredientGroup(
+          name: 'Topping',
+          lines: [IngredientLine(name: 'Rosmarin')],
+        ),
+      ],
+  stepSections:
+      stepSections ??
+      const [
+        StepSection(title: 'Teig', steps: ['Kneten.', 'Gehen lassen.']),
+      ],
+  photos: photos,
+  sources: const ['https://example.org/focaccia'],
+  notes: '22x22 cm Form',
+  favourite: favourite,
+  reviewReasons: reviewReasons,
+  createdAt: testTime,
+  updatedAt: testTime,
+);
+
+Future<PhotoStore> tempPhotoStore() async => PhotoStore(await Directory.systemTemp.createTemp('cookit_photos_'));