Add three new scripts for installing marketplace plugins to consumer projects:
- install-plugin.sh: Install plugin to target project (.mcp.json + CLAUDE.md)
- uninstall-plugin.sh: Remove plugin from target project
- list-installed.sh: Show installed/available plugins in a project
Features:
- Idempotent operations (safe to run multiple times)
- Handles plugins with/without MCP servers
- Code block aware CLAUDE.md section removal
- Flexible header format detection
Documentation updated in docs/CONFIGURATION.md with usage examples.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>