[BUG] Plugin cache keeps old versions and runs their hooks!

[robtaylor]

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'm developing a plugin for code navigation claude-context-tools. I'm regularly updating the marketplace and upgrading the plugin as I develop, but I can see that the older versions are kept around and claude-code runs the old versions' hooks:

> /context-tools:repo-map

⏺ Bash(rm -f .claude/repo-map-cache.json .claude/repo-map.md && nohup uv run
      /Users/roberttaylor/.claude/plugins/cache/chipflow-context-tools/context-tools/0.3.1/scripts/generate-repo-map.py > .claude/repo-map-build.log
      2>&1 &)
  ⎿  PreToolUse:Callback hook succeeded: Success
  ⎿  PreToolUse:Bash says: Plugin hook error: /bin/sh:
     /Users/roberttaylor/.claude/plugins/cache/chipflow-context-tools/context-tools/0.2.9/scripts/check-cache.sh: Permission denied
  ⎿  PreToolUse:Callback hook succeeded: Success
  ⎿  PreToolUse:Bash says: Plugin hook error: /bin/sh:
     /Users/roberttaylor/.claude/plugins/cache/chipflow-context-tools/context-tools/0.3.0/scripts/check-cache.sh: Permission denied
  ⎿  (No content)

What Should Happen?

Only latest version's hooks should run.

Error Messages/Logs

Steps to Reproduce

Install a plugin via marketplace, bump it's version in git, update marketplace with /plugin, do an action that runs its hooks.

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

No response

Claude Code Version

2.0.76 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

No response