Remove Apt 5B from EN example and placeholder

Replace footer references with link to the Rampart announcement post

Bump @nationaldesignstudio/rampart 0.1.1 → 0.1.2

Remove third-party demo credit — Rampart model and demo are National Design Studio

Re-theme demo in National Design Studio editorial style (black/white, Swiss grid, EOB masthead)

Static client-side demo; note 555-phone + Luhn limitations; fix example data