2.0: breakfast and snack meal types across the app

- MealType gains breakfast/snack (chronological order drives slot/row order).
- AppSettings.activeMealTypes: single source of truth for enabled meals, backed
  by new optional enabledMealTypesRaw with legacy mealWindows fallback —
  additive migration, keeps pre-2.0 installs and iCloud snapshots working.
  Legacy field kept coherent by the setter. time(for:) resolves per-meal event
  times (breakfast 8:00 / snack 17:00 defaults on old stores).
- Replaced the 5 duplicated mealWindows→[MealType] derivations (slot sync,
  default plan creation, week calendar, export view) with activeMealTypes.
- CalendarService: per-type event names and times.
- Export styles: per-type accent colors and gradients.
- Widget: generic meals list (N rows) instead of hardcoded lunch/dinner;
  compact families fall back to main meals when >2 are active.
- Settings: 4 meal toggles (min 1) replace the 3-option picker.
- Onboarding: meal step is now multi-select over the 4 types.
- iCloud sync: enabledMealTypesRaw synced (optional, pre-2.0 compatible).
- Localized breakfast/snack in all 6 languages.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BkanrydYtrme8wipTzWssG

MealMood/Services/WidgetDataStore.swift

@@ -1,11 +1,16 @@
 import Foundation
 import WidgetKit
 
+/// Snapshot of today's meals for the widget. Generic over meal types (2.0):
+/// one entry per active meal type, in chronological order.
 struct TodayMealData: Codable {
-    let lunch: String?
-    let dinner: String?
-    let lunchLabel: String
-    let dinnerLabel: String
+    struct Meal: Codable {
+        let type: String   // MealType raw value (drives icon/color in widget)
+        let label: String  // localized meal name
+        let name: String?  // dish name, nil when the slot is empty
+    }
+
+    let meals: [Meal]
     let weekdayName: String
     let updatedAt: Date
 }
@@ -20,11 +25,17 @@ enum WidgetDataStore {
         // weekday: 1=Sun,2=Mon..7=Sat → appDayOfWeek: 0=Mon..6=Sun
         let appDayOfWeek = (weekday + 5) % 7
 
-        let lunchId = plan?.slots.first { $0.dayOfWeek == appDayOfWeek && $0.mealType == MealType.lunch.rawValue }?.dishId
-        let dinnerId = plan?.slots.first { $0.dayOfWeek == appDayOfWeek && $0.mealType == MealType.dinner.rawValue }?.dishId
-
-        let lunch = lunchId.flatMap { id in dishes.first { $0.id == id }?.name }
-        let dinner = dinnerId.flatMap { id in dishes.first { $0.id == id }?.name }
+        let meals: [TodayMealData.Meal] = settings.activeMealTypes.map { mealType in
+            let dishId = plan?.slots.first {
+                $0.dayOfWeek == appDayOfWeek && $0.mealType == mealType.rawValue
+            }?.dishId
+            let name = dishId.flatMap { id in dishes.first { $0.id == id }?.name }
+            return TodayMealData.Meal(
+                type: mealType.rawValue,
+                label: String(localized: String.LocalizationValue(mealType.localizedKey)),
+                name: name
+            )
+        }
 
         let locale = Locale(identifier: settings.languageEnum.resolved().localeIdentifier)
         let formatter = DateFormatter()
@@ -33,10 +44,7 @@ enum WidgetDataStore {
         let weekdayName = formatter.string(from: today).capitalized(with: locale)
 
         let data = TodayMealData(
-            lunch: lunch,
-            dinner: dinner,
-            lunchLabel: String(localized: "lunch"),
-            dinnerLabel: String(localized: "dinner"),
+            meals: meals,
             weekdayName: weekdayName,
             updatedAt: today
         )