Session 34: Design system Phase C — app shell, nav, routing, auth gate, footer, 404 (1818 tests)

VYNDR 2.0 conversion, Phase C (the frame every page sits inside). Frontend-only;
zero backend changes.

- Nav rewritten: new .wm Wordmark, mono uppercase links, More dropdown, search/
  bell/read-meter/avatar, Ticker under the bar. layout main paddingTop 64 -> 96.
- Routing: web/src/lib/routes.js (GATED/OPEN/HASH_ALIASES, isGatedRoute,
  resolveHashAlias). Client AuthGate bounces signed-out users off personal
  routes to /login?next=. HashRedirect maps #scan/#terminal to real routes.
- Footer rewritten to system voice + Detroit signature; mounted globally in
  layout (removed per-page dup).
- 404 converted to the north star (scanlines, crt-sweep, glitch wordmark, amber).
- Stub pages for terminal/compare/invite/help/about/notifications via RouteStub.

Honest reconciliations: auth gate is client-side (no auth-helpers pkg; session is
client-side Supabase); GATED narrowed to protect the free-scan funnel; did not
stub over existing real pages; redirect param is ?next= (what /login reads).

26 new tests. Backend 1792 -> 1818, 142 suites, zero regressions. Web build clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web/src/app/page.tsx

@@ -19,7 +19,7 @@ import Features from '@/components/Features';
 import HowItWorks from '@/components/HowItWorks';
 import Pricing from '@/components/Pricing';
 import FAQ from '@/components/FAQ';
-import Footer from '@/components/Footer';
+// Footer is mounted globally in the root layout (Session 34) — no per-page import.
 
 export default function Home() {
   const { user, loading } = useAuth();
@@ -54,7 +54,6 @@ export default function Home() {
       <HowItWorks />
       <Pricing />
       <FAQ />
-      <Footer />
     </>
   );
 }