[BUG] Version 2.1.20 hides tool usage details (what files are being read, what search patterns are being used) behind Ctrl + O

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?

Claude Code v2.1.20 hides tool usage details (eg. what patterns are being searched for & what files are being read) behind Ctrl+O. I use CC as a pair programmer and scalpel (not for vibe / background coding) so being able to see these details in the main flow is critical. I'm on the $200 plan and this change has really killed my workflow. Toggling in and out of verbose mode with Ctrl+O isn't a solution - it adds friction and I don't want all the extra output that verbose mode includes.

For example, issues like the one below keep happening now because I can't see what Claude is exploring or reading. It lost track track of the monorepo sub dir it was working in after compaction. With 2.1.19 and below I could tell when it's looking at the wrong files or going off course and interrupt + guide it.

Can you please provide a config option to show the full tool usage details again? The "dumbed down" output might be fine for vibe coding but it's terrible for complex, targeted pair development.

2.1.20

<img width="945" height="218" alt="Image" src="https://github.com/user-attachments/assets/98f188cd-3b90-416d-b0de-51cab6d64683" />

2.1.19

<img width="1773" height="1390" alt="Image" src="https://github.com/user-attachments/assets/7b01d05d-17ef-4967-80a9-f8281ccf69b6" />

What Should Happen?

There should be a config option to show full tool usage details in the main output, like in 2.1.19 and below.

Error Messages/Logs

Steps to Reproduce

1. Open Claude Code 2.1.19 and get it to search for various files and review them. Watch the output.
2. Open Claude Code 2.1.20 and get it to do the same.
3. Compare

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.20

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_