Fix spam folder not found: add Junk Email to candidate names

src/SpamGuard/Services/InboxMonitorService.cs

@@ -333,7 +333,7 @@ public sealed partial class InboxMonitorService : BackgroundService
         // 2. Search by name — try configured name plus common variants, two levels deep
         var candidates = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
         {
-            _monitoring.SpamFolderName, "Junk", "Spam", "Junk E-mail", "Junk Mail", "Bulk Mail"
+            _monitoring.SpamFolderName, "Junk", "Spam", "Junk Email", "Junk E-mail", "Junk Mail", "Bulk Mail"
         };
 
         foreach (var ns in client.PersonalNamespaces)
@@ -346,6 +346,9 @@ public sealed partial class InboxMonitorService : BackgroundService
             try { topLevel = await root.GetSubfoldersAsync(false, ct); }
             catch (Exception ex) { _logger.LogDebug(ex, "Could not list top-level folders"); continue; }
 
+            _logger.LogDebug("Folder list for {Account}: {Folders}",
+                AccountName, string.Join(", ", topLevel.Select(f => f.FullName)));
+
             foreach (var folder in topLevel)
             {
                 if (candidates.Contains(folder.Name))
@@ -358,6 +361,9 @@ public sealed partial class InboxMonitorService : BackgroundService
                 try
                 {
                     var sub = await folder.GetSubfoldersAsync(false, ct);
+                    if (sub.Count > 0)
+                        _logger.LogDebug("Subfolders of {Parent}: {Subs}",
+                            folder.FullName, string.Join(", ", sub.Select(f => f.FullName)));
                     var match = sub.FirstOrDefault(f => candidates.Contains(f.Name));
                     if (match != null)
                     {