feat(24-06): add Route 53 tile to /admin/sync integration list

- Hand-authored public/logos/route53.svg (globe/DNS glyph, primitive
  shapes only, no script/external refs/raster data)
- New INTEGRATIONS entry linking to /admin/sync/route53 (built in
  plan 24-07), color: orange (already used by datto-rmm)

app/admin/sync/page.tsx

@@ -27,6 +27,7 @@ const INTEGRATIONS: IntegrationCard[] = [
   { id: 'mimecast',    category: 'Email Security', product: 'Mimecast',    description: 'Message tracking logs, threat events, SIEM data, 120-day retention', href: '/admin/sync/mimecast',       logo: '/logos/mimecast.ico',     color: 'blue'   },
   { id: 'duo',          category: '2FA / MFA',      product: 'Duo Security',  description: 'Users, phones, auth logs, groups, integrations across all child accounts', href: '/admin/sync/duo',            logo: '/logos/duo.ico',          color: 'green'  },
   { id: 'pax8',         category: 'Licensing',      product: 'PAX8',          description: 'Companies, subscriptions, products, and license billing',                              href: '/admin/sync/pax8',           logo: '/logos/pax8.ico',         color: 'blue'   },
+  { id: 'route53',      category: 'DNS',            product: 'AWS Route 53', description: 'Hosted zones, DNS records, change history, NS-delegation health',                       href: '/admin/sync/route53',        logo: '/logos/route53.svg',     color: 'orange' },
 ];
 
 const COLOR_MAP: Record<string, { bg: string; border: string }> = {

public/logos/route53.svg

@@ -0,0 +1,11 @@
+<svg viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg">
+  <circle cx="16" cy="16" r="14" fill="none" stroke="#FF9900" stroke-width="2"/>
+  <ellipse cx="16" cy="16" rx="6" ry="14" fill="none" stroke="#FF9900" stroke-width="1.5"/>
+  <line x1="2" y1="16" x2="30" y2="16" stroke="#FF9900" stroke-width="1.5"/>
+  <line x1="4" y1="9" x2="28" y2="9" stroke="#FF9900" stroke-width="1"/>
+  <line x1="4" y1="23" x2="28" y2="23" stroke="#FF9900" stroke-width="1"/>
+  <circle cx="16" cy="2" r="1.6" fill="#FF9900"/>
+  <circle cx="30" cy="16" r="1.6" fill="#FF9900"/>
+  <circle cx="16" cy="30" r="1.6" fill="#FF9900"/>
+  <circle cx="2" cy="16" r="1.6" fill="#FF9900"/>
+</svg>