Get rid of the mail item queue system. Go back to 6 months initial sync strategy.

Wino.Core.Domain/Entities/Mail/MailItemFolder.cs

@@ -36,12 +36,6 @@ public class MailItemFolder : IMailItemFolder
     /// </summary>
     public string DeltaToken { get; set; }
 
-    /// <summary>
-    /// Whether initial synchronization of mail ids is completed for this folder.
-    /// Used to determine if we should queue all mail ids first or start downloading from queue.
-    /// </summary>
-    public InitialSynchronizationStatus FolderStatus { get; set; }
-
     // For GMail Labels
     public string TextColorHex { get; set; }
     public string BackgroundColorHex { get; set; }

Wino.Core.Domain/Entities/Mail/MailItemQueue.cs

@@ -1,20 +0,0 @@
-using System;
-using SQLite;
-
-namespace Wino.Core.Domain.Entities.Mail;
-
-public class MailItemQueue
-{
-    [PrimaryKey]
-    public Guid Id { get; set; }
-    public Guid AccountId { get; set; }
-    public string RemoteServerId { get; set; }
-    public string RemoteFolderId { get; set; }  // For Outlook per-folder sync
-    public bool IsProcessed { get; set; }
-    public int FailedCount { get; set; }
-    public DateTime CreatedAt { get; set; }
-    public DateTime? ProcessedAt { get; set; }
-
-    public bool IsRecent() => (DateTime.UtcNow - CreatedAt).TotalDays <= 7;
-    public bool ShouldDelete() => IsProcessed || FailedCount >= 30;
-}

Wino.Core.Domain/Entities/Shared/MailAccount.cs

@@ -33,11 +33,6 @@ public class MailAccount
     /// </summary>
     public MailProviderType ProviderType { get; set; }
 
-    /// <summary>
-    /// Gets or sets the initial mail sync status for the account.
-    /// </summary>
-    public InitialSynchronizationStatus SynchronizationStatus { get; set; }
-
     /// <summary>
     /// For tracking mail change delta.
     /// Gmail  : historyId