feat(sdk): Replace mock data with real API calls in consent, DSR, and consent-management

- /sdk/consent: Replace hardcoded mockDocuments with GET /api/admin/consent/documents
- /sdk/dsr: Replace createMockDSRList with fetchSDKDSRList via /api/sdk/v1/dsgvo/dsr
- /sdk/dsr/new: Replace console.log mock with real POST to create DSR requests
- /sdk/dsr/[requestId]: Replace mock lookup with real GET/PUT for DSR details and status updates
- /sdk/consent-management: Add real stats, GDPR process counts, and email template editor
- lib/sdk/dsr/api.ts: Add transformBackendDSR adapter (flat backend → nested frontend types)

Prepares for removal of /dsgvo and /compliance pages.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

admin-v2/app/(sdk)/sdk/dsr/page.tsx

@@ -15,7 +15,7 @@ import {
   isOverdue,
   isUrgent
 } from '@/lib/sdk/dsr/types'
-import { createMockDSRList, createMockStatistics } from '@/lib/sdk/dsr/api'
+import { fetchSDKDSRList } from '@/lib/sdk/dsr/api'
 import { DSRWorkflowStepperCompact } from '@/components/sdk/dsr'
 
 // =============================================================================
@@ -323,17 +323,14 @@ export default function DSRPage() {
   const [selectedStatus, setSelectedStatus] = useState<DSRStatus | 'all'>('all')
   const [selectedPriority, setSelectedPriority] = useState<string>('all')
 
-  // Load data
+  // Load data from SDK backend
   useEffect(() => {
-    // For now, use mock data. Replace with API call when backend is ready.
     const loadData = async () => {
       setIsLoading(true)
       try {
-        // In production: const data = await fetchDSRList()
-        const mockRequests = createMockDSRList()
-        const mockStats = createMockStatistics()
-        setRequests(mockRequests)
-        setStatistics(mockStats)
+        const { requests: dsrRequests, statistics: dsrStats } = await fetchSDKDSRList()
+        setRequests(dsrRequests)
+        setStatistics(dsrStats)
       } catch (error) {
         console.error('Failed to load DSR data:', error)
       } finally {