I need the actual code changes (diff) to generate an accurate and informative commit message.

Program.cs

@@ -158,6 +158,16 @@ if (File.Exists(sessionPath))
     {
         await session.LoadAsync(sessionPath, default);
         AnsiConsole.MarkupLine($"[dim grey]Auto-loaded previous session.[/]");
+        
+        // Print the last message if there is one
+        if (session.History.Count > 1)
+        {
+            var lastMessage = session.History[^1];
+            var preview = lastMessage.Text.Length > 280
+                ? lastMessage.Text[..277] + "..."
+                : lastMessage.Text;
+            AnsiConsole.MarkupLine($"[dim grey]  Last message: {Markup.Escape(preview)}[/]");
+        }
     }
     catch { /* Ignore load errors on startup */ }
 }