Bunch of improvements i dunno.

Wino.Core.Domain/Interfaces/IAccountMenuItem.cs

@@ -7,7 +7,27 @@ namespace Wino.Core.Domain.Interfaces;
 public interface IAccountMenuItem : IMenuItem
 {
     bool IsEnabled { get; set; }
-    double SynchronizationProgress { get; set; }
+    
+    /// <summary>
+    /// Calculated synchronization progress percentage (0-100). -1 for indeterminate.
+    /// </summary>
+    double SynchronizationProgress { get; }
+    
+    /// <summary>
+    /// Total items to sync. 0 for indeterminate progress.
+    /// </summary>
+    int TotalItemsToSync { get; set; }
+    
+    /// <summary>
+    /// Remaining items to sync.
+    /// </summary>
+    int RemainingItemsToSync { get; set; }
+    
+    /// <summary>
+    /// Current synchronization status message.
+    /// </summary>
+    string SynchronizationStatus { get; set; }
+    
     int UnreadItemCount { get; set; }
     IEnumerable<MailAccount> HoldingAccounts { get; }
     void UpdateAccount(MailAccount account);