feat: Katalogverwaltung ins Compliance SDK integriert (17 Kataloge)

Bestehende Catalog-Manager-Komponenten in SDK-Routes eingebunden:
- SDKState + Reducer um customCatalogs CRUD erweitert
- Neue Route /sdk/catalog-manager mit CatalogManagerContent
- Sidebar-Link "Kataloge" mit Database-Icon

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

admin-compliance/components/sdk/Sidebar/SDKSidebar.tsx

@@ -590,6 +590,18 @@ export function SDKSidebar({ collapsed = false, onCollapsedChange }: SDKSidebarP
             isActive={pathname === '/sdk/architecture'}
             collapsed={collapsed}
           />
+          <AdditionalModuleItem
+            href="/sdk/catalog-manager"
+            icon={
+              <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
+                  d="M4 7v10c0 2.21 3.582 4 8 4s8-1.79 8-4V7M4 7c0 2.21 3.582 4 8 4s8-1.79 8-4M4 7c0-2.21 3.582-4 8-4s8 1.79 8 4m0 5c0 2.21-3.582 4-8 4s-8-1.79-8-4" />
+              </svg>
+            }
+            label="Kataloge"
+            isActive={pathname === '/sdk/catalog-manager'}
+            collapsed={collapsed}
+          />
           <AdditionalModuleItem
             href="https://macmini:3006"
             icon={