[BUG] "Shell Details" panel doesn't actively update the "runtime" timer

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

When claude spawns a shell in the background and you try to view it In manage -> shell details, the "Runtime" timer doesn't update and remains at the same exact time that you first opened the panel on

What Should Happen?

The "Runtime" timer should constantly update as long as the panel is open

Error Messages/Logs

Steps to Reproduce

1. Tell claude to open a shell in the background running a command that takes a long time (e.g sleep 30)
2. Open the "Shell Details" panel via manage -> shell
3. Observe the timer frozen with the runtime when you first opened the panel

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.150

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

Other

Additional Information

_No response_