feat: IACE Navigation-Struktur — Grenzen-Tab + Zusatzmodule

- 'Grenzen & Verwendung' als neuen Tab eingefuegt (Schritt 3 CE-Prozess)
- Klassifikation + Monitoring als 'Zusatzmodule' separiert
- chat-Icon fuer Interview/Grenzen Tab

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

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

@@ -7,13 +7,17 @@ import IACEFlowFAB from './[projectId]/_components/IACEFlowFAB'
 
 const IACE_NAV_ITEMS = [
   { id: 'overview', label: 'Uebersicht', href: '', icon: 'grid' },
+  { id: 'interview', label: 'Grenzen & Verwendung', href: '/interview', icon: 'chat' },
   { id: 'components', label: 'Komponenten', href: '/components', icon: 'cube' },
-  { id: 'classification', label: 'Klassifikation', href: '/classification', icon: 'tag' },
   { id: 'hazards', label: 'Hazard Log', href: '/hazards', icon: 'warning' },
   { id: 'mitigations', label: 'Massnahmen', href: '/mitigations', icon: 'shield' },
   { id: 'verification', label: 'Verifikation', href: '/verification', icon: 'check' },
   { id: 'evidence', label: 'Nachweise', href: '/evidence', icon: 'document' },
   { id: 'tech-file', label: 'CE-Akte', href: '/tech-file', icon: 'folder' },
+]
+
+const IACE_EXTRA_ITEMS = [
+  { id: 'classification', label: 'Klassifikation', href: '/classification', icon: 'tag' },
   { id: 'monitoring', label: 'Monitoring', href: '/monitoring', icon: 'activity' },
 ]
 
@@ -74,6 +78,12 @@ function NavIcon({ icon, className }: { icon: string; className?: string }) {
           <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 10V3L4 14h7v7l9-11h-7z" />
         </svg>
       )
+    case 'chat':
+      return (
+        <svg className={cls} fill="none" viewBox="0 0 24 24" stroke="currentColor">
+          <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>
+      )
     default:
       return null
   }
@@ -139,6 +149,26 @@ export default function IACELayout({ children }: { children: React.ReactNode })
               </Link>
             ))}
           </nav>
+          {/* Extra modules (not part of standard CE flow) */}
+          <div className="px-4 pt-3 mt-1 border-t border-gray-200 dark:border-gray-700">
+            <p className="text-xs text-gray-400 uppercase tracking-wider mb-1">Zusatzmodule</p>
+          </div>
+          <nav className="px-2 pb-2 space-y-0.5">
+            {IACE_EXTRA_ITEMS.map((item) => (
+              <Link
+                key={item.id}
+                href={`${basePath}${item.href}`}
+                className={`flex items-center gap-2.5 px-3 py-2 rounded-lg text-xs font-medium transition-colors ${
+                  isActive(item.href)
+                    ? 'bg-gray-100 text-gray-700 dark:bg-gray-700 dark:text-gray-300'
+                    : 'text-gray-400 hover:bg-gray-50 dark:text-gray-500 dark:hover:bg-gray-700'
+                }`}
+              >
+                <NavIcon icon={item.icon} className="w-3.5 h-3.5 flex-shrink-0" />
+                <span className="truncate">{item.label}</span>
+              </Link>
+            ))}
+          </nav>
         </aside>
       )}