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/wizard/WizardNavigation.tsx

@@ -0,0 +1,53 @@
+'use client'
+
+interface WizardNavigationProps {
+  currentStep: number
+  totalSteps: number
+  onPrev: () => void
+  onNext: () => void
+  showNext?: boolean
+  isLoading?: boolean
+  nextLabel?: string
+  prevLabel?: string
+}
+
+export function WizardNavigation({
+  currentStep,
+  totalSteps,
+  onPrev,
+  onNext,
+  showNext = true,
+  isLoading = false,
+  nextLabel = 'Weiter →',
+  prevLabel = '← Zurueck',
+}: WizardNavigationProps) {
+  return (
+    <div className="flex justify-between mt-8 pt-6 border-t">
+      <button
+        onClick={onPrev}
+        disabled={currentStep === 0 || isLoading}
+        className={`px-6 py-2 rounded-lg transition-colors ${
+          currentStep === 0 || isLoading
+            ? 'bg-gray-200 text-gray-400 cursor-not-allowed'
+            : 'bg-gray-200 text-gray-700 hover:bg-gray-300'
+        }`}
+      >
+        {prevLabel}
+      </button>
+
+      {showNext && currentStep < totalSteps - 1 && (
+        <button
+          onClick={onNext}
+          disabled={isLoading}
+          className={`px-6 py-2 rounded-lg transition-colors ${
+            isLoading
+              ? 'bg-blue-400 cursor-not-allowed'
+              : 'bg-blue-600 text-white hover:bg-blue-700'
+          }`}
+        >
+          {isLoading ? 'Bitte warten...' : nextLabel}
+        </button>
+      )}
+    </div>
+  )
+}