[Bug] Plugin git clone operations hang indefinitely and leak temp directories

Bug Description
Title: Plugin git clone operations have no timeout and leak
temp directories

Description:

Plugin fetching via git clone can hang indefinitely with no
timeout. When this happens:

1. The git clone process runs forever (observed: 53+ hours,

3200+ CPU minutes at 135-146% utilization)

1. ~/.claude/plugins/cache/temp_git_* directories accumulate

and are never cleaned up

1. New Claude Code sessions spawn additional clone attempts

without checking for existing stuck processes

Reproduction:

• Uncertain what triggers the initial hang (possibly network

hiccup or GitHub rate limit during clone)

• Once stuck, the process persists across terminal sessions

Impact:

• Accumulated 22,000+ temp_git directories (~32GB disk

usage)

• Single git process consumed 53+ hours of CPU, nearly

brought down M4 MacBook Pro

Suggested fix:

• Add 60-second timeout to plugin git clone operations
• Clean up temp_git_* directories on session start if older

than N minutes

• Check for existing clone processes before spawning new

ones

Workaround:
# Kill stuck process
pkill -9 -f "temp_git_"

# Clean cache
rm -rf ~/.claude/plugins/cache

# Prevent recurrence (hourly cron)
(crontab -l 2>/dev/null; echo "0 find
~/.claude/plugins/cache -name 'temp_git_*' -mmin +60 -exec
rm -rf {} \; 2>/dev/null") | crontab -

Environment Info

• Platform: darwin
• Terminal: vscode
• Version: 2.1.27
• Feedback ID: b2e95441-bccb-4a3f-9b78-4be20752e8d3

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/chadthornton/.local/share/claude/versions/2.1.27 (expected in multi-process scenarios)\n    at DUR (/$bunfs/root/claude:3589:2098)\n    at jPA (/$bunfs/root/claude:3589:1209)\n    at processT…

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