[BUG] Zooming out past minimum pollutes undo history

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?

On Claude Desktop, when you zoom out past the minimum level, each extra zoom-out press gets recorded in the undo history despite having no visible effect. You then have to undo the same number of times before zoom actually starts increasing again.

What Should Happen?

Zoom actions at the minimum/maximum limit shouldn't be added to the undo stack. Undo should immediately start changing the zoom level.

Error Messages/Logs

Steps to Reproduce

1. Press zoom-out (Cmd+- / Ctrl+-) until you hit the minimum zoom level
2. Press zoom-out 5 more times
3. Press undo (Cmd+Z / Ctrl+Z) — notice the first 5 presses do nothing visible
4. Only after the 5th undo does zoom actually start increasing

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

N/A

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

_No response_