Step-by-step SKILL.md packages an AI follows for a single kind of task.
A skill is a focused playbook - instructions, examples and constraints - that makes any model reliable at one job, from SQL reporting to changelog writing. The router fills a plan's skill slot with the best match for the request.
A fast deterministic checker for interface code against slop patterns and AI fingerprints (anti-slop) plus core a11y rules — no interpretation, no taste judgments: fixed rules runnable in CI, emitting
