Whats new implementation.

Wino.Core.Domain/Interfaces/IAppMigration.cs

@@ -0,0 +1,15 @@
+using System.Threading.Tasks;
+
+namespace Wino.Core.Domain.Interfaces;
+
+/// <summary>
+/// Represents a one-time app or data migration that runs when a user updates to a new version.
+/// </summary>
+public interface IAppMigration
+{
+    /// <summary>Gets the unique identifier for this migration, used to track completion in local settings.</summary>
+    string MigrationId { get; }
+
+    /// <summary>Executes the migration logic.</summary>
+    Task ExecuteAsync();
+}