Strategy/context companion to the validate-cert-sap-accuracy skill: the
per-cert loop, how to read the gov-API-vs-Elmhurst comparison, the code->value
gotchas (immersion/cylinder/party-wall/baths/off-peak), known mapper gaps to
chase (alt-wall drop), cert-selection for coverage, guardrails (corpus gauge,
no tuning to one cert, no tolerance widening), and the current corpus state.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
