Schemas are JSON Schema 2020-12 validated with Ajv. Each ships valid and invalid fixtures
and generated TypeScript types. Also included: 28 service manifests (7 running services,
21 charter placeholders), the first 9 capabilities mapped to the routes that implement them
today, ULID subject ids, request/problem envelope helpers, capability grant checks, and a
compatibility gate against the previous release tag. CI runs npm test.