architecture.md: components, the !testme flow, network/TLS, resource safety, enrollment.
runbook.md: where to look, common failure modes (timeout/rate-limit/auth/skip/health/data), orphan
cleanup, re-trigger, cancel. Completes the D9 doc set (README+install+enroll+secrets+arch+runbook).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
