fix(autotell): exclude live tell from history preload

The live tell that triggers an Auto-Tell-Tab spawn is already in the
message store by the time MessageProcessed fires, because
MessageManager calls Store.UpsertMessage on line 266 before invoking
the event on line 277. PreloadHistory therefore picked up the live
tell as the youngest historic message and the separator landed below
it instead of above.

Pass the live message id through SpawnTempTab into PreloadHistory and
filter it out of the result. Pull one extra row so a successful
exclude does not cost the user a preload-budget slot.

ChatTwo/AutoTellTabsService.cs

@@ -200,7 +200,11 @@ internal sealed class AutoTellTabsService : IDisposable
         // Preload first so the tab opens with chronological history above
         // the current message — and so a slow DB query never causes a
         // visible "empty tab, then history pops in" effect on screen.
-        PreloadHistory(tab, partner.Name, partner.World);
+        // The current message is already persisted in the store by the
+        // time MessageProcessed fires (see MessageManager.cs: UpsertMessage
+        // runs before the event), so we have to exclude it explicitly to
+        // avoid the separator landing below the live tell.
+        PreloadHistory(tab, partner.Name, partner.World, currentMessage.Id);
 
         tab.AddMessage(currentMessage, unread: true);
         Plugin.Config.Tabs.Add(tab);
@@ -238,7 +242,7 @@ internal sealed class AutoTellTabsService : IDisposable
         return $"{playerName}@World{worldRowId}";
     }
 
-    private void PreloadHistory(Tab tab, string senderName, uint senderWorld)
+    private void PreloadHistory(Tab tab, string senderName, uint senderWorld, Guid currentMessageId)
     {
         var preloadCount = Plugin.Config.AutoTellTabsHistoryPreload;
         if (preloadCount <= 0)
@@ -248,13 +252,21 @@ internal sealed class AutoTellTabsService : IDisposable
 
         try
         {
+            // Pull one extra row because the live tell that triggered this
+            // spawn is already in the store and would otherwise eat one of
+            // the user's preload-budget slots.
             var history = _store.GetTellHistoryWithSender(
                 _messageManager.CurrentContentId,
                 senderName,
                 senderWorld,
-                preloadCount);
+                preloadCount + 1);
 
-            if (history.Count == 0)
+            var historicMessages = history
+                .Where(m => m.Id != currentMessageId)
+                .Take(preloadCount)
+                .ToList();
+
+            if (historicMessages.Count == 0)
             {
                 // No prior tells with this player — leave the tab to start
                 // empty so the user does not see a "history loaded" marker
@@ -265,7 +277,7 @@ internal sealed class AutoTellTabsService : IDisposable
             // The history list is already oldest-first, so a plain AddPrune
             // loop produces the chronological order the user expects to see
             // when the tab opens.
-            foreach (var message in history)
+            foreach (var message in historicMessages)
             {
                 tab.Messages.AddPrune(message, MessageManager.MessageDisplayLimit);
             }