fix(admin-v2): Restore complete admin-v2 application

The admin-v2 application was incomplete in the repository. This commit
restores all missing components:

- Admin pages (76 pages): dashboard, ai, compliance, dsgvo, education,
  infrastructure, communication, development, onboarding, rbac
- SDK pages (45 pages): tom, dsfa, vvt, loeschfristen, einwilligungen,
  vendor-compliance, tom-generator, dsr, and more
- Developer portal (25 pages): API docs, SDK guides, frameworks
- All components, lib files, hooks, and types
- Updated package.json with all dependencies

The issue was caused by incomplete initial repository state - the full
admin-v2 codebase existed in backend/admin-v2 and docs-src/admin-v2
but was never fully synced to the main admin-v2 directory.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

admin-v2/components/common/ModuleCard.tsx

@@ -0,0 +1,113 @@
+import Link from 'next/link'
+import { NavModule, NavCategory } from '@/lib/navigation'
+
+interface ModuleCardProps {
+  module: NavModule
+  category: NavCategory
+  showDescription?: boolean
+}
+
+export function ModuleCard({ module, category, showDescription = true }: ModuleCardProps) {
+  return (
+    <Link
+      href={module.href}
+      className={`block p-4 rounded-xl border-2 transition-all hover:shadow-md bg-${category.colorClass}-50 border-${category.colorClass}-200 hover:border-${category.colorClass}-400`}
+      style={{
+        backgroundColor: `${category.color}10`,
+        borderColor: `${category.color}40`,
+      }}
+    >
+      <div className="flex items-start gap-3">
+        {/* Color indicator */}
+        <div
+          className="w-1.5 h-12 rounded-full flex-shrink-0"
+          style={{ backgroundColor: category.color }}
+        />
+
+        <div className="flex-1 min-w-0">
+          <h3 className="font-semibold text-slate-900 truncate">{module.name}</h3>
+          {showDescription && (
+            <p className="text-sm text-slate-500 mt-1 line-clamp-2">{module.description}</p>
+          )}
+
+          {/* Audience tags */}
+          <div className="flex flex-wrap gap-1 mt-2">
+            {module.audience.slice(0, 2).map((a) => (
+              <span
+                key={a}
+                className="inline-flex items-center px-2 py-0.5 rounded text-xs font-medium text-slate-600 bg-slate-100"
+              >
+                {a}
+              </span>
+            ))}
+          </div>
+        </div>
+
+        {/* Arrow */}
+        <svg
+          className="w-5 h-5 text-slate-400 flex-shrink-0"
+          fill="none"
+          stroke="currentColor"
+          viewBox="0 0 24 24"
+        >
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5l7 7-7 7" />
+        </svg>
+      </div>
+    </Link>
+  )
+}
+
+// Category Card for overview pages
+interface CategoryCardProps {
+  category: NavCategory
+  showModuleCount?: boolean
+}
+
+export function CategoryCard({ category, showModuleCount = true }: CategoryCardProps) {
+  return (
+    <Link
+      href={`/${category.id}`}
+      className="block p-6 rounded-xl border-2 transition-all hover:shadow-lg bg-white"
+      style={{
+        borderColor: `${category.color}40`,
+      }}
+    >
+      <div className="flex items-center gap-4">
+        {/* Icon */}
+        <div
+          className="w-12 h-12 rounded-xl flex items-center justify-center"
+          style={{ backgroundColor: `${category.color}20` }}
+        >
+          <span style={{ color: category.color }} className="text-2xl">
+            {category.icon === 'shield' && '🛡️'}
+            {category.icon === 'brain' && '🧠'}
+            {category.icon === 'server' && '🖥️'}
+            {category.icon === 'graduation' && '🎓'}
+            {category.icon === 'mail' && '📬'}
+            {category.icon === 'code' && '💻'}
+          </span>
+        </div>
+
+        <div className="flex-1 min-w-0">
+          <h3 className="font-bold text-lg text-slate-900">{category.name}</h3>
+          <p className="text-sm text-slate-500 line-clamp-1">{category.description}</p>
+          {showModuleCount && (
+            <span className="text-xs text-slate-400 mt-1">
+              {category.modules.length} Module
+            </span>
+          )}
+        </div>
+
+        {/* Arrow */}
+        <svg
+          className="w-6 h-6 text-slate-400 flex-shrink-0"
+          fill="none"
+          stroke="currentColor"
+          viewBox="0 0 24 24"
+        >
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5l7 7-7 7" />
+        </svg>
+      </div>
+    </Link>
+  )
+}