fix: remove hardcoded ANSI escape codes in /chat list command

The /chat list command was displaying raw ANSI escape codes instead of
colored text. This was caused by the escapeAnsiCtrlCodes function in
HistoryItemDisplay that escapes all ANSI control characters.

Changed to plain text format for better compatibility and cleaner output.

packages/cli/src/ui/commands/chatCommand.ts

@@ -89,9 +89,9 @@ const listCommand: SlashCommand = {
       const isoString = chat.mtime.toISOString();
       const match = isoString.match(/(\d{4}-\d{2}-\d{2})T(\d{2}:\d{2}:\d{2})/);
       const formattedDate = match ? `${match[1]} ${match[2]}` : 'Invalid Date';
-      message += `  - \u001b[36m${paddedName}\u001b[0m  \u001b[90m(saved on ${formattedDate})\u001b[0m\n`;
+      message += `  - ${paddedName}  (saved on ${formattedDate})\n`;
     }
-    message += `\n\u001b[90mNote: Newest last, oldest first\u001b[0m`;
+    message += `\nNote: Newest last, oldest first`;
     return {
       type: 'message',
       messageType: 'info',