Sync check (skills ↔ marketplace.json), metadata audit, per-plugin validation, and final claude plugin validate gate. All users installing this skill get these process guards. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Encodes proven methodology from real marketplace development: - 4-phase workflow: Analyze → Create → Validate → PR - 8 schema hard-rules (verified against Claude Code source) - 13 anti-patterns from production debugging - Complete marketplace.json schema reference - Marketplace maintenance rules (version bumping, description updates) Also fixes: remove invalid metadata.homepage from our own marketplace.json Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>