Synchronise les parties entre les deux devices

ChessCubing.Server/Social/SocialContracts.cs

@@ -134,4 +134,19 @@ public sealed class PlaySessionResponse
     public DateTime ConfirmedUtc { get; init; }
 }
 
+public sealed class CollaborativeMatchStateMessage
+{
+    public string SessionId { get; init; } = string.Empty;
+
+    public string? MatchJson { get; init; }
+
+    public string Route { get; init; } = "/application.html";
+
+    public string SenderSubject { get; init; } = string.Empty;
+
+    public long Revision { get; init; }
+
+    public DateTime UpdatedUtc { get; init; }
+}
+
 public sealed class SocialValidationException(string message) : Exception(message);