[BUG] Silverblue compatibility bug in Cowork/Claude Code

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?

Fedora Silverblue (immutable filesystem, /var/home instead of /home)
bwrap 0.11.0
Claude Code 2.1.87
The exact error: bwrap: Can't mkdir /usr/local/bin: No such file or directory
That sandbox.enabled: false in settings.json has no effect
That CLAUDE_CODE_DISABLE_SANDBOX=1 env var has no effect

What Should Happen?

I can't run scheduled tasks, I get error:
CLI output was not valid JSON. This may indicate an error during startup. Output: bwrap: Can't mkdir /usr/local/bin: No such file or directory

Error Messages/Logs

Steps to Reproduce

Run a scheduled task in Cowork

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.87 (Claude Code)

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

iTerm2

Additional Information

_No response_