- Add /api-error-to-contract skill: converts Sentry production errors into Pact tests
- Add /contract-health-check skill: full contract layer health report across all 4 layers
- Add contract-health-check.yml: weekly scheduled CI job with Slack alerting
- Add .claude-plugin/plugin.json: QA API Contract Plugin v1.0 manifest
- Add 5 Claude agents: contract-orchestrator, consumer-contract-writer, provider-verification-writer, msw-synchronization-agent, api-coverage-auditor
- Add CONTRACT-RUNBOOK.md: ownership map, break vs additive matrix, MSW protocol, can-i-deploy gates, synchronization chain, and operational runbooks
- Add CONTRACT-COVERAGE-REPORT.md: 5/5 endpoints green across all test layers
Co-Authored-By: Claude Sonnet 4.6 noreply@anthropic.com