Adds the per-repo domain glossary that engineering skills
(diagnose, tdd, improve-codebase-architecture, grill-with-docs)
read before working in this repo. Terms only — no implementation
detail. Six clusters (code organization, cluster, networking,
storage, secrets, CI/CD), 22 terms, plus relationships, an example
dialogue, and five flagged ambiguities.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
