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/legal-corpus/route.ts

@@ -0,0 +1,164 @@
+/**
+ * Legal Corpus API Proxy
+ *
+ * Proxies requests to klausur-service for RAG operations.
+ * This allows the client-side RAG page to call the API without CORS issues.
+ */
+
+import { NextRequest, NextResponse } from 'next/server'
+
+const KLAUSUR_SERVICE_URL = process.env.KLAUSUR_SERVICE_URL || 'http://klausur-service:8086'
+
+export async function GET(request: NextRequest) {
+  const { searchParams } = new URL(request.url)
+  const action = searchParams.get('action')
+
+  try {
+    let url = `${KLAUSUR_SERVICE_URL}/api/v1/admin/legal-corpus`
+
+    switch (action) {
+      case 'status':
+        url += '/status'
+        break
+      case 'search':
+        const query = searchParams.get('query')
+        const topK = searchParams.get('top_k') || '5'
+        const regulations = searchParams.get('regulations')
+        url += `/search?query=${encodeURIComponent(query || '')}&top_k=${topK}`
+        if (regulations) {
+          url += `&regulations=${encodeURIComponent(regulations)}`
+        }
+        break
+      case 'ingestion-status':
+        url += '/ingestion-status'
+        break
+      case 'regulations':
+        url += '/regulations'
+        break
+      case 'custom-documents':
+        url += '/custom-documents'
+        break
+      case 'pipeline-checkpoints':
+        url = `${KLAUSUR_SERVICE_URL}/api/v1/admin/pipeline/checkpoints`
+        break
+      case 'pipeline-status':
+        url = `${KLAUSUR_SERVICE_URL}/api/v1/admin/pipeline/status`
+        break
+      case 'traceability': {
+        const chunkId = searchParams.get('chunk_id')
+        const regulation = searchParams.get('regulation')
+        url += `/traceability?chunk_id=${encodeURIComponent(chunkId || '')}&regulation=${encodeURIComponent(regulation || '')}`
+        break
+      }
+      default:
+        return NextResponse.json({ error: 'Unknown action' }, { status: 400 })
+    }
+
+    const res = await fetch(url, {
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      cache: 'no-store',
+    })
+
+    const data = await res.json()
+    return NextResponse.json(data, { status: res.status })
+  } catch (error) {
+    console.error('Legal corpus proxy error:', error)
+    return NextResponse.json(
+      { error: 'Failed to connect to klausur-service' },
+      { status: 503 }
+    )
+  }
+}
+
+export async function POST(request: NextRequest) {
+  const { searchParams } = new URL(request.url)
+  const action = searchParams.get('action')
+
+  try {
+    let url = `${KLAUSUR_SERVICE_URL}/api/v1/admin/legal-corpus`
+
+    switch (action) {
+      case 'ingest': {
+        url += '/ingest'
+        const body = await request.json()
+        const res = await fetch(url, {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify(body),
+        })
+        const data = await res.json()
+        return NextResponse.json(data, { status: res.status })
+      }
+
+      case 'add-link': {
+        url += '/add-link'
+        const body = await request.json()
+        const res = await fetch(url, {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify(body),
+        })
+        const data = await res.json()
+        return NextResponse.json(data, { status: res.status })
+      }
+
+      case 'upload': {
+        url += '/upload'
+        // Forward FormData directly
+        const formData = await request.formData()
+        const res = await fetch(url, {
+          method: 'POST',
+          body: formData,
+        })
+        const data = await res.json()
+        return NextResponse.json(data, { status: res.status })
+      }
+
+      case 'start-pipeline': {
+        url = `${KLAUSUR_SERVICE_URL}/api/v1/admin/pipeline/start`
+        const body = await request.json()
+        const res = await fetch(url, {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify(body),
+        })
+        const data = await res.json()
+        return NextResponse.json(data, { status: res.status })
+      }
+
+      default:
+        return NextResponse.json({ error: 'Unknown action' }, { status: 400 })
+    }
+  } catch (error) {
+    console.error('Legal corpus proxy error:', error)
+    return NextResponse.json(
+      { error: 'Failed to connect to klausur-service' },
+      { status: 503 }
+    )
+  }
+}
+
+export async function DELETE(request: NextRequest) {
+  const { searchParams } = new URL(request.url)
+  const action = searchParams.get('action')
+  const docId = searchParams.get('docId')
+
+  try {
+    if (action === 'delete-document' && docId) {
+      const url = `${KLAUSUR_SERVICE_URL}/api/v1/admin/legal-corpus/custom-documents/${docId}`
+      const res = await fetch(url, { method: 'DELETE' })
+      const data = await res.json()
+      return NextResponse.json(data, { status: res.status })
+    }
+
+    return NextResponse.json({ error: 'Unknown action' }, { status: 400 })
+  } catch (error) {
+    console.error('Legal corpus proxy error:', error)
+    return NextResponse.json(
+      { error: 'Failed to connect to klausur-service' },
+      { status: 503 }
+    )
+  }
+}