[BUG] Cowork: can't start a new session because the `/sessions` partition is full

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?

I am using the Claude desktop app for macOS Version 1.1.3189 (1b7b58)

When I start a new session the agent is finding that there is no space left on the /sessions partition for the sandbox

I can no longer start a new Cowork session

The agent says:

The /sessions partition filling up from stale old sessions would be a good one to file there — it seems like the VM isn't cleaning up session directories when conversations end.

What Should Happen?

Sessions that end/age or are archived should release the space they consume on the /sessions partition

Error Messages/Logs

Steps to Reproduce

Create enough sessions

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

1.1.3189 (1b7b58) Claude Cowork desktop app

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_