feat: add recipe creation, editing, and detail screens; enhance recipe model with instructions and ingredients

flutter/lib/features/recipes/domain/parsed_recipe.dart

@@ -0,0 +1,73 @@
+class IngredientSuggestion {
+  final int productId;
+  final String productName;
+  final double score;
+
+  const IngredientSuggestion({
+    required this.productId,
+    required this.productName,
+    required this.score,
+  });
+
+  factory IngredientSuggestion.fromJson(Map<String, dynamic> json) =>
+      IngredientSuggestion(
+        productId: (json['productId'] as num).toInt(),
+        productName: json['productName'] as String? ?? '',
+        score: (json['score'] as num).toDouble(),
+      );
+}
+
+class ParsedIngredient {
+  final String rawName;
+  final double quantity;
+  final String unit;
+  final String? note;
+  final List<IngredientSuggestion> suggestions;
+
+  const ParsedIngredient({
+    required this.rawName,
+    required this.quantity,
+    required this.unit,
+    this.note,
+    required this.suggestions,
+  });
+
+  factory ParsedIngredient.fromJson(Map<String, dynamic> json) {
+    final rawSuggestions = json['suggestions'] as List<dynamic>? ?? [];
+    return ParsedIngredient(
+      rawName: json['rawName'] as String? ?? '',
+      quantity: (json['quantity'] as num? ?? 0).toDouble(),
+      unit: json['unit'] as String? ?? '',
+      note: json['note'] as String?,
+      suggestions: rawSuggestions
+          .map((s) => IngredientSuggestion.fromJson(s as Map<String, dynamic>))
+          .toList(),
+    );
+  }
+}
+
+class ParsedRecipe {
+  final String name;
+  final String? description;
+  final String? instructions;
+  final List<ParsedIngredient> ingredients;
+
+  const ParsedRecipe({
+    required this.name,
+    this.description,
+    this.instructions,
+    required this.ingredients,
+  });
+
+  factory ParsedRecipe.fromJson(Map<String, dynamic> json) {
+    final rawIngredients = json['ingredients'] as List<dynamic>? ?? [];
+    return ParsedRecipe(
+      name: json['name'] as String? ?? '',
+      description: json['description'] as String?,
+      instructions: json['instructions'] as String?,
+      ingredients: rawIngredients
+          .map((i) => ParsedIngredient.fromJson(i as Map<String, dynamic>))
+          .toList(),
+    );
+  }
+}