1.1.5: auto-fill first week after onboarding

Land new users on a ready, auto-planned week (with confetti) instead of an
empty one, to improve activation. Only fires when the user added dishes;
otherwise keeps the current empty-week + auto-assign prompt behavior.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

MealMood/ViewModels/OnboardingViewModel.swift

@@ -5,6 +5,7 @@ import SwiftData
 final class OnboardingViewModel: ObservableObject {
     static let pendingAutoAssignPromptKey = "onboarding_pending_auto_assign_prompt"
     static let pendingPremiumPromptKey = "onboarding_pending_premium_prompt"
+    static let pendingAutoFillOnLaunchKey = "onboarding_pending_auto_fill_on_launch"
 
     @Published var currentStep: Int = 0
     @Published var selectedMealWindows: MealWindows = .dinnerOnly
@@ -145,6 +146,7 @@ final class OnboardingViewModel: ObservableObject {
             let dish = Dish(name: dishData.name, tagIds: dishData.tagIds)
             context.insert(dish)
         }
+        let createdDishes = !addedDishes.isEmpty
 
         // Create first week plan
         let weekStart = Date().startOfWeek()
@@ -153,7 +155,11 @@ final class OnboardingViewModel: ObservableObject {
         do {
             try context.save()
             AnalyticsService.logOnboardingCompleted()
-            UserDefaults.standard.set(true, forKey: Self.pendingAutoAssignPromptKey)
+            // If the user added dishes, auto-fill their first week on launch so they
+            // land on a ready plan instead of an empty one. Otherwise fall back to the
+            // home auto-assign prompt.
+            UserDefaults.standard.set(createdDishes, forKey: Self.pendingAutoFillOnLaunchKey)
+            UserDefaults.standard.set(!createdDishes, forKey: Self.pendingAutoAssignPromptKey)
             UserDefaults.standard.set(true, forKey: Self.pendingPremiumPromptKey)
             return true
         } catch {