Add dynamic breadcrumb navigation and update kanzlei routes under /demo

internal_frontend/utils/BreadcrumbUtils.ts

@@ -0,0 +1,28 @@
+// utils/getBreadcrumbs.ts
+import {breadcrumbMap} from '@/lib/breadcrumb-map';
+
+export type Breadcrumb = {
+    label: string;
+    href: string;
+    isCurrentPage?: boolean;
+};
+
+export function getBreadcrumbs(path: string): Breadcrumb[] {
+    const pathSegments = path.split('/').filter(Boolean);
+
+    return pathSegments.map((segment, index) => {
+        const href = `/${pathSegments.slice(0, index + 1).join('/')}`;
+        // Use the mapping if it exists, otherwise format the segment
+        const label = breadcrumbMap[segment.toLowerCase()] ||
+            segment
+                .split('-')
+                .map(word => word.charAt(0).toUpperCase() + word.slice(1))
+                .join(' ');
+
+        return {
+            label,
+            href,
+            isCurrentPage: index === pathSegments.length - 1
+        };
+    });
+}