Each feature's bind-production.ts already ends with
assertFeatureConformance(), but that check only fired on `pnpm dev`.
Adds a smoke test per feature that invokes the binder with a Noop ctx,
so missing __instrumented / __captured / __audited brands now fail
under `pnpm test` (and therefore in CI), closing the gap between the
TypeScript brand layer and the boot-time runtime assertion.