diff --git a/MealMood/MealMoodApp.swift b/MealMood/MealMoodApp.swift
index 3ef2a30..47343cb 100644
--- a/MealMood/MealMoodApp.swift
+++ b/MealMood/MealMoodApp.swift
@@ -17,7 +17,20 @@ struct MealMoodApp: App {
             MealSlot.self
         ])
         let configuration = ModelConfiguration(cloudKitDatabase: .none)
-        return try! ModelContainer(for: schema, configurations: [configuration])
+        do {
+            return try ModelContainer(for: schema, configurations: [configuration])
+        } catch {
+            // Migration failed — reset the store to avoid a crash loop
+            let storeURL = configuration.url
+            for ext in ["", "-shm", "-wal"] {
+                try? FileManager.default.removeItem(at: URL(fileURLWithPath: storeURL.path + ext))
+            }
+            do {
+                return try ModelContainer(for: schema, configurations: [configuration])
+            } catch {
+                fatalError("Cannot create ModelContainer after reset: \(error)")
+            }
+        }
     }()
 
     init() {
diff --git a/MealMood/Models/AppSettings.swift b/MealMood/Models/AppSettings.swift
index 040e072..59c2acf 100644
--- a/MealMood/Models/AppSettings.swift
+++ b/MealMood/Models/AppSettings.swift
@@ -4,11 +4,11 @@ import SwiftData
 @Model
 final class AppSettings {
     var mealWindows: String // "dinnerOnly", "lunchOnly", "both"
-    var includeWeekends: Bool
+    var includeWeekends: Bool = true
     var language: String // "spanish", "english"
 
     var calendarId: String?
-    var syncEnabled: Bool
+    var syncEnabled: Bool = false
     var syncMode: String? // "weekComplete", "manual"
     var lunchTime: Date
     var dinnerTime: Date
@@ -18,8 +18,8 @@ final class AppSettings {
     var iCloudSyncEnabled: Bool?
     var weekExportStyle: String?
 
-    var isPremium: Bool
-    var onboardingCompleted: Bool
+    var isPremium: Bool = false
+    var onboardingCompleted: Bool = false
 
     init() {
         self.mealWindows = "dinnerOnly"
diff --git a/MealMood/Models/Dish.swift b/MealMood/Models/Dish.swift
index 6ffc44e..f7b136b 100644
--- a/MealMood/Models/Dish.swift
+++ b/MealMood/Models/Dish.swift
@@ -8,7 +8,7 @@ final class Dish {
     var descriptionText: String?
     var tagIds: [UUID]
     var createdAt: Date
-    var isPriority: Bool
+    var isPriority: Bool = false
 
     init(
         id: UUID = UUID(),
diff --git a/MealMood/Models/MealSlot.swift b/MealMood/Models/MealSlot.swift
index daa21b9..2813c83 100644
--- a/MealMood/Models/MealSlot.swift
+++ b/MealMood/Models/MealSlot.swift
@@ -8,8 +8,8 @@ final class MealSlot {
     var mealType: String // "lunch", "dinner"
     var dishId: UUID?
     var calendarEventId: String?
-    var isRuleOverridden: Bool
-    var isEatingOut: Bool
+    var isRuleOverridden: Bool = false
+    var isEatingOut: Bool = false
 
     var weekPlan: WeekPlan?
 
diff --git a/MealMood/Models/Tag.swift b/MealMood/Models/Tag.swift
index 5e6ca2d..e93cde4 100644
--- a/MealMood/Models/Tag.swift
+++ b/MealMood/Models/Tag.swift
@@ -8,11 +8,11 @@ final class Tag {
     var nameEN: String
     var color: String
     var maxPerWeek: Int?
-    var noConsecutive: Bool
-    var noDuplicateInDay: Bool
+    var noConsecutive: Bool = false
+    var noDuplicateInDay: Bool = false
     var mealTypeRestriction: String? // "lunch", "dinner", nil
     var dayRestriction: String? // nil = any day, "weekdays" = Mon-Fri, "weekend" = Sat-Sun
-    var isDefault: Bool
+    var isDefault: Bool = true
     var sortOrder: Int
 
     init(