[BUG] Cowork connected-folder sessions: file-delete tool no longer registers after desktop update 1.19367.0 (rm blocked, EPERM)

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?

In Cowork sessions with a connected local folder (Windows desktop app, version 1.19367.0), file deletion is unavailable. No delete tool is registered for the session (verified by searching both available and deferred tools), and shell rm inside the connected folder returns Operation not permitted (EPERM), including on a file created in that same session. Every other connected-folder tool (list directory, read/stage, write/commit) registers and works normally. Only the delete tool is missing. This worked in Cowork sessions before the recent desktop app update and broke after it. It now affects all Cowork sessions, so this is a regression introduced by the update, not an intermittent glitch.

What Should Happen?

The file-delete tool should be registered and available, as it was before the recent update, and deleting a file should trigger the standard in-session approval prompt and then succeed.

Error Messages/Logs

rm: cannot remove '<connected-folder>/test.txt': Operation not permitted

Steps to Reproduce

1. Update the desktop app to 1.19367.0.
2. Start a Cowork session with a connected local folder.
3. In the session, create a file in the connected folder (this succeeds).
4. Try to delete that file. No delete tool is available, and in the shell rm "<connected-folder>/test.txt" returns Operation not permitted (exit 1).
5. The file cannot be removed. This reproduces in every Cowork session since the update.

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

The desktop app version immediately before 1.19367.0. Deletion worked on that previous version and broke after updating to 1.19367.0.

Claude Code Version

This is the Claude desktop app (Cowork), version 1.19367.0 (Electron 42.5.1, Node 24.17.0), not the Claude Code CLI, so claude --version does not apply.

Platform

Other

Operating System

Windows

Terminal/Shell

Other

Additional Information

This concerns the Cowork desktop app's connected-folder bridge, not the Claude Code CLI, so the CLI-specific fields (Claude Code Version, API Platform, Terminal/Shell) do not map directly. Before the recent desktop app update, the delete tool registered and file deletion worked in Cowork connected-folder sessions. After updating to 1.19367.0, the delete tool no longer registers in any Cowork session, while every other file tool (list, read, stage, write) still works. Restarting the app and starting a fresh session does not restore it, which points to the update itself rather than a per-session glitch.