1.0.4: Smarter auto-assign, quick dish entry, calendar fix, frictionless onboarding

- AutocompleteEngine: no-repeat rule now applies to all dishes (not just tagless ones); fallback still allows repeats when no alternative exists
- CalendarService: update existing events instead of delete+create to prevent duplicates; fix weekStartDate using plan date instead of currentWeekStart
- DishFormView: form stays open after saving in create mode for quick multi-dish entry; Done button to close; saved feedback banner
- OnboardingViewModel/FirstDishesStepView: dishes are now optional during onboarding; Finish button always enabled
- AnalyticsService: new events — onboarding_step_viewed(step) and auto_assign_used(filled, unfilled)
- Localization: dish_done and first_dishes_optional_hint added in 6 languages; release notes updated in all 6 languages
- Version bump: 1.0.3 → 1.0.4 (build 19)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

MealMood/ViewModels/OnboardingViewModel.swift

@@ -35,7 +35,7 @@ final class OnboardingViewModel: ObservableObject {
         case 1: return true // Meal windows (always has selection)
         case 2: return true // Weekends (toggle)
         case 3: return true // Calendar (optional)
-        case 4: return addedDishes.count >= 2 // Need at least 2 dishes
+        case 4: return true // Dishes are optional
         default: return false
         }
     }
@@ -151,6 +151,7 @@ final class OnboardingViewModel: ObservableObject {
 
         do {
             try context.save()
+            AnalyticsService.logOnboardingCompleted()
             UserDefaults.standard.set(true, forKey: Self.pendingAutoAssignPromptKey)
             UserDefaults.standard.set(true, forKey: Self.pendingPremiumPromptKey)
             return true