headless mode doesn't show detail info when using command #1435

When using the CLI in headless mode, command execution is invisible. In contrast, interactive (non-headless) mode shows a detailed, formatted panel including the command used and its output.

Steps to Reproduce

1. Headless mode
   Run:

   qwen "count files in this project using shell command" -y

   Output:

   I'll count the files in your project using a shell command. Let me run that for you.
   
   692There are 692 files in your project directory.
   

2. Interactive mode
   Run:

   qwen
   # then input: count files in this project using shell command

   Output:

   ✦ I'll count the files in your project using a shell command.
   
    ╭────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
    │ ✓  Shell find . -type f | wc -l (Count all files in the current project directory)                                                                                         │
    │                                                                                                                                                                            │
    │    692                                                                                                                                                                     │
    ╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
   ✦ There are 692 files in your project directory.
   

Expected Behavior

In headless mode, when a command (e.g., shell) is invoked, the CLI should still display execution details

Environment