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/Views/Home/WeekPlanShareView.swift

@@ -45,11 +45,7 @@ struct WeekPlanShareView: View {
     }
 
     private var mealTypes: [MealType] {
-        switch settings.mealWindowsEnum {
-        case .dinnerOnly: return [.dinner]
-        case .lunchOnly: return [.lunch]
-        case .both: return [.lunch, .dinner]
-        }
+        settings.activeMealTypes
     }
 
     private var exportStyle: WeekExportStyle {
@@ -389,11 +385,11 @@ struct WeekPlanShareView: View {
                                     HStack(spacing: 14) {
                                         Image(systemName: mealType.icon)
                                             .font(.system(size: 42, weight: .medium))
-                                            .foregroundColor(mealType == .lunch ? Color(hex: "#C85E2A") : Color(hex: "#27604A"))
+                                            .foregroundColor(mealTypeAccent(mealType))
                                             .frame(width: 56)
                                         Text(mealTypeLabel(mealType).uppercased(with: locale))
                                             .font(.system(size: 42, weight: .bold, design: .serif))
-                                            .foregroundColor(mealType == .lunch ? Color(hex: "#C85E2A") : Color(hex: "#27604A"))
+                                            .foregroundColor(mealTypeAccent(mealType))
                                     }
                                     Text(dishName(day: day, mealType: mealType))
                                         .font(.system(size: 62, weight: .medium, design: .serif))
@@ -497,7 +493,17 @@ struct WeekPlanShareView: View {
     }
 
     private func mealTypeLabel(_ mealType: MealType) -> String {
-        mealType == .lunch ? String(localized: "lunch") : String(localized: "dinner")
+        String(localized: String.LocalizationValue(mealType.localizedKey))
+    }
+
+    /// Accent color per meal row in the vertical/school styles.
+    private func mealTypeAccent(_ mealType: MealType) -> Color {
+        switch mealType {
+        case .breakfast: return Color(hex: "#B07C2B")
+        case .lunch: return Color(hex: "#C85E2A")
+        case .snack: return Color(hex: "#7B5EA7")
+        case .dinner: return Color(hex: "#27604A")
+        }
     }
 
     private func dishName(day: Int, mealType: MealType) -> String {
@@ -526,9 +532,17 @@ struct WeekPlanShareView: View {
     }
 
     private func gridMealCell(_ title: String, icon: String, mealType: MealType) -> some View {
-        let background = mealType == .lunch ?
-            LinearGradient(colors: [Color(hex: "#FFE2C8"), Color(hex: "#FFD4B2")], startPoint: .topLeading, endPoint: .bottomTrailing) :
-            LinearGradient(colors: [Color(hex: "#D7EFE7"), Color(hex: "#C2E7DB")], startPoint: .topLeading, endPoint: .bottomTrailing)
+        let background: LinearGradient
+        switch mealType {
+        case .breakfast:
+            background = LinearGradient(colors: [Color(hex: "#FFEFC9"), Color(hex: "#FFE5A9")], startPoint: .topLeading, endPoint: .bottomTrailing)
+        case .lunch:
+            background = LinearGradient(colors: [Color(hex: "#FFE2C8"), Color(hex: "#FFD4B2")], startPoint: .topLeading, endPoint: .bottomTrailing)
+        case .snack:
+            background = LinearGradient(colors: [Color(hex: "#EBE0F5"), Color(hex: "#DFD0EF")], startPoint: .topLeading, endPoint: .bottomTrailing)
+        case .dinner:
+            background = LinearGradient(colors: [Color(hex: "#D7EFE7"), Color(hex: "#C2E7DB")], startPoint: .topLeading, endPoint: .bottomTrailing)
+        }
         return HStack(spacing: 8) {
             Image(systemName: icon)
             Text(title)