feat: Normen-Referenzen in Hazards + Massnahmen + Normenrecherche-Tab

- Hazard Log: Top 2 relevante Normen pro Kategorie unter dem Kategorie-Badge
- Massnahmen: Normen-Referenzen aus measures_library inline anzeigen
- Navigation: Neuer Normenrecherche-Tab (zwischen Grenzen und Komponenten)
- Normenrecherche-Seite: SuggestedNorms + A/B/C Erklaerung

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

admin-compliance/app/sdk/iace/layout.tsx

@@ -9,6 +9,7 @@ const IACE_NAV_ITEMS = [
   { id: 'overview', label: 'Uebersicht', href: '', icon: 'grid' },
   { id: 'order', label: 'Auftrag', href: '/order', icon: 'briefcase' },
   { id: 'interview', label: 'Grenzen & Verwendung', href: '/interview', icon: 'chat' },
+  { id: 'norms', label: 'Normenrecherche', href: '/norms', icon: 'book' },
   { id: 'components', label: 'Komponenten', href: '/components', icon: 'cube' },
   { id: 'hazards', label: 'Hazard Log', href: '/hazards', icon: 'warning' },
   { id: 'mitigations', label: 'Massnahmen', href: '/mitigations', icon: 'shield' },
@@ -91,6 +92,12 @@ function NavIcon({ icon, className }: { icon: string; className?: string }) {
           <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M8 12h.01M12 12h.01M16 12h.01M21 12c0 4.418-4.03 8-9 8a9.863 9.863 0 01-4.255-.949L3 20l1.395-3.72C3.512 15.042 3 13.574 3 12c0-4.418 4.03-8 9-8s9 3.582 9 8z" />
         </svg>
       )
+    case 'book':
+      return (
+        <svg className={cls} fill="none" viewBox="0 0 24 24" stroke="currentColor">
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18.477 18.247 18 16.5 18c-1.746 0-3.332.477-4.5 1.253" />
+        </svg>
+      )
     default:
       return null
   }