Anti-drift snippets: `?raw` isn't supported by Angular's esbuild build, so real code is exposed via // #region showcase:<name> markers in source (registration/remote-data/ postcode/change-request.machine/intake.machine) → scripts/gen-snippets.mjs → committed snippets.generated.ts, with a CI drift gate so the shown code is the shipped code. The /concepts page renders the 5 real snippets (union/fold/parse/machine/steps) with a source caption + a tiny dependency-free highlightTs (+spec); deliberately-wrong illustrations stay authored. Teaching motion: active state node pops on transition + parse result animates in (existing reduced-motion-safe toolkit). Generated file prettier-ignored (like api-client). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>