Initial commit: CleanPlate shared Dart package

Domain models, enums, constants, validators shared between frontend and backend.

lib/src/models/ai_recipe_request.g.dart

@@ -0,0 +1,33 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'ai_recipe_request.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+AiRecipeRequest _$AiRecipeRequestFromJson(
+  Map<String, dynamic> json,
+) => AiRecipeRequest(
+  ingredients:
+      (json['ingredients'] as List<dynamic>).map((e) => e as String).toList(),
+  dietType: json['dietType'] as String?,
+  allergies:
+      (json['allergies'] as List<dynamic>?)?.map((e) => e as String).toList() ??
+      const [],
+  mood: json['mood'] as String?,
+  maxTimeMin: (json['maxTimeMin'] as num?)?.toInt(),
+  servings: (json['servings'] as num?)?.toInt() ?? 4,
+  skillLevel: json['skillLevel'] as String?,
+);
+
+Map<String, dynamic> _$AiRecipeRequestToJson(AiRecipeRequest instance) =>
+    <String, dynamic>{
+      'ingredients': instance.ingredients,
+      'dietType': instance.dietType,
+      'allergies': instance.allergies,
+      'mood': instance.mood,
+      'maxTimeMin': instance.maxTimeMin,
+      'servings': instance.servings,
+      'skillLevel': instance.skillLevel,
+    };