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/app/api/sdk/v1/export/route.ts

@@ -0,0 +1,88 @@
+import { NextRequest, NextResponse } from 'next/server'
+
+/**
+ * SDK Export API
+ *
+ * GET /api/sdk/v1/export?format=json|pdf|zip - Export SDK data
+ */
+
+export async function GET(request: NextRequest) {
+  try {
+    const { searchParams } = new URL(request.url)
+    const format = searchParams.get('format') || 'json'
+    const tenantId = searchParams.get('tenantId') || 'default'
+
+    switch (format) {
+      case 'json':
+        return exportJSON(tenantId)
+
+      case 'pdf':
+        return exportPDF(tenantId)
+
+      case 'zip':
+        return exportZIP(tenantId)
+
+      default:
+        return NextResponse.json(
+          { error: `Unknown export format: ${format}` },
+          { status: 400 }
+        )
+    }
+  } catch (error) {
+    console.error('Failed to export:', error)
+    return NextResponse.json(
+      { error: 'Failed to export' },
+      { status: 500 }
+    )
+  }
+}
+
+function exportJSON(tenantId: string) {
+  // In production, this would fetch the actual state from the database
+  const exportData = {
+    version: '1.0.0',
+    exportedAt: new Date().toISOString(),
+    tenantId,
+    data: {
+      useCases: [],
+      screening: null,
+      modules: [],
+      requirements: [],
+      controls: [],
+      evidence: [],
+      risks: [],
+      dsfa: null,
+      toms: [],
+      vvt: [],
+      documents: [],
+    },
+  }
+
+  return new NextResponse(JSON.stringify(exportData, null, 2), {
+    status: 200,
+    headers: {
+      'Content-Type': 'application/json',
+      'Content-Disposition': `attachment; filename="compliance-export-${tenantId}-${new Date().toISOString().split('T')[0]}.json"`,
+    },
+  })
+}
+
+function exportPDF(tenantId: string) {
+  // In production, this would generate a proper PDF using a library like pdfkit or puppeteer
+  // For now, return a placeholder response
+  return NextResponse.json({
+    success: false,
+    error: 'PDF export not yet implemented',
+    message: 'PDF generation requires server-side rendering. Use JSON export for now.',
+  }, { status: 501 })
+}
+
+function exportZIP(tenantId: string) {
+  // In production, this would create a ZIP file with multiple documents
+  // For now, return a placeholder response
+  return NextResponse.json({
+    success: false,
+    error: 'ZIP export not yet implemented',
+    message: 'ZIP generation requires additional server-side processing. Use JSON export for now.',
+  }, { status: 501 })
+}