Two hooks now active for marketplace-dev users:
1. Edit marketplace.json → auto-validate schema
2. Edit any SKILL.md → warn if version bump needed or skill unregistered
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When marketplace-dev is installed, any Write/Edit to a marketplace.json
automatically runs `claude plugin validate` and reports pass/fail.
Users get instant feedback without remembering to validate manually.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>