Replaces the plain trefoil mark with the full product hero —
cracked trefoil, tagline, and feature bullets from the architecture spec.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Copies brand assets to frontend/public (favicon.png, logo.png, logo-hero.png).
Updates index.html, LoginView, RegisterView, DashboardLayout sidebar, and
PublicLayout footer with proper branding.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>