feat: complete mealplanner app (backend + frontend + deployment)

.NET 8 backend with Zitadel JWT auth, TheMealDB integration,
weekly meal plan generation, shopping list aggregation.
Vue 3 + Tailwind 4 frontend with dark emerald theme,
manual OIDC PKCE auth, all views implemented.
Multi-stage Dockerfile with nginx reverse proxy.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/Models/CheckedShoppingItem.cs

@@ -0,0 +1,10 @@
+namespace MealPlanner.Models;
+
+public class CheckedShoppingItem
+{
+    public Guid Id { get; set; }
+    public Guid MealPlanId { get; set; }
+    public string ItemName { get; set; } = "";
+    public string UserId { get; set; } = "";
+    public bool IsChecked { get; set; }
+}

backend/Models/MealPlan.cs

@@ -0,0 +1,11 @@
+namespace MealPlanner.Models;
+
+public class MealPlan
+{
+    public Guid Id { get; set; }
+    public string UserId { get; set; } = "";
+    public DateOnly WeekStart { get; set; }
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+
+    public List<MealPlanEntry> Entries { get; set; } = [];
+}

backend/Models/MealPlanEntry.cs

@@ -0,0 +1,12 @@
+namespace MealPlanner.Models;
+
+public class MealPlanEntry
+{
+    public Guid Id { get; set; }
+    public Guid MealPlanId { get; set; }
+    public DateOnly Date { get; set; }
+    public Guid RecipeId { get; set; }
+
+    public MealPlan MealPlan { get; set; } = null!;
+    public Recipe Recipe { get; set; } = null!;
+}

backend/Models/Recipe.cs

@@ -0,0 +1,21 @@
+namespace MealPlanner.Models;
+
+public enum RecipeSource
+{
+    Own,
+    TheMealDb
+}
+
+public class Recipe
+{
+    public Guid Id { get; set; }
+    public string? UserId { get; set; }
+    public string? ExternalId { get; set; }
+    public string Title { get; set; } = "";
+    public string Instructions { get; set; } = "";
+    public string? ImageUrl { get; set; }
+    public RecipeSource Source { get; set; }
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+
+    public List<RecipeIngredient> Ingredients { get; set; } = [];
+}

backend/Models/RecipeIngredient.cs

@@ -0,0 +1,13 @@
+namespace MealPlanner.Models;
+
+public class RecipeIngredient
+{
+    public Guid Id { get; set; }
+    public Guid RecipeId { get; set; }
+    public string Name { get; set; } = "";
+    public decimal? Amount { get; set; }
+    public string? Unit { get; set; }
+    public string? Category { get; set; }
+
+    public Recipe Recipe { get; set; } = null!;
+}

backend/Models/ShoppingItem.cs

@@ -0,0 +1,10 @@
+namespace MealPlanner.Models;
+
+public class ShoppingItem
+{
+    public string Name { get; set; } = "";
+    public decimal? TotalAmount { get; set; }
+    public string? Unit { get; set; }
+    public string? Category { get; set; }
+    public bool IsChecked { get; set; }
+}

backend/Models/UserSettings.cs

@@ -0,0 +1,7 @@
+namespace MealPlanner.Models;
+
+public class UserSettings
+{
+    public string UserId { get; set; } = "";
+    public int HouseholdSize { get; set; } = 2;
+}