Claude Desktop: gkinstall temp directories not cleaned up, accumulating 100GB+ of disk space

Bug Report

App: Claude Desktop (macOS)
Component: Auto-updater / gk_core update mechanism

Summary

Claude Desktop's internal updater accumulates thousands of gkinstall* temporary directories in $TMPDIR and never cleans them up. On this machine, 2,592 directories had accumulated totaling ~105GB of disk space, all appearing as "System" storage in macOS Settings.

Steps to Reproduce

1. Install Claude Desktop on macOS
2. Leave it running over time with auto-updates enabled
3. Check $TMPDIR (e.g. /private/var/folders/rf/<hash>/T/)

What Happens

Thousands of gkinstall* directories accumulate, each ~42MB, containing:

gk_core_3.1.66_darwin_arm64.zip
mcp_resources/

These are never deleted after the update completes.

What Should Happen

Temp directories should be removed after a successful (or failed) update.

Evidence

$ ls $TMPDIR | grep -c gkinstall
2592

$ du -sh $TMPDIR/gkinstall997184129
42M	/private/var/folders/rf/3q4s1h1x1yq_p7chz_9sgk8w0000gn/T/gkinstall997184129

$ ls $TMPDIR/gkinstall997184129
gk
gk_core_3.1.66_darwin_arm64.zip
mcp_resources

The ShipIt stderr log also shows a related cleanup error:

Couldn't remove owned bundle at location file:///.../com.anthropic.claudefordesktop.ShipIt.dIqBapxl/Claude.app,
error: "Claude.app" couldn't be removed. The file doesn't exist.

Impact

• ~105GB of disk space consumed silently
• Shows as "System" storage in macOS System Settings → General → Storage
• User has no indication this is happening

Workaround

rm -rf $TMPDIR/gkinstall*

Environment

• macOS Darwin 25.5.0 (arm64)
• Claude Desktop with gk_core_3.1.66_darwin_arm64