When changing the hostname and committing the changes, the shell prompt doesn't update immediately to reflect the new hostname. The prompt only changes after re-login. This behavior is particularly inconvenient in test and educational environments (like GNS3) where frequent hostname changes occur.

Steps to Reproduce:

• Connect to VyOS CLI
• Note current prompt (e.g., vyos@oldhostname:~$)
• Execute: set system host-name newhostname
• Execute: commit
• Observe the prompt remains with the old hostname

Expected Behavior:

The shell prompt should update immediately after commit to show the new hostname (e.g., vyos@newhostname:~$) without requiring re-login.

Actual Behavior:

The prompt continues to show the old hostname until the user re-logs in.

Suggested Solution:

• Update the prompt immediately after hostname change commit by refreshing the PS1 variable or triggering a prompt update mechanism.