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/new/page.tsx

@@ -10,6 +10,7 @@ import {
   DSR_TYPE_INFO,
   DSRCreateRequest
 } from '@/lib/sdk/dsr/types'
+import { createSDKDSR } from '@/lib/sdk/dsr/api'
 
 // =============================================================================
 // TYPES
@@ -249,11 +250,7 @@ export default function NewDSRPage() {
         priority: formData.priority
       }
 
-      // In production: await createDSR(request)
-      console.log('Creating DSR:', request)
-
-      // Simulate API call
-      await new Promise(resolve => setTimeout(resolve, 1000))
+      await createSDKDSR(request)
 
       // Redirect to DSR list
       router.push('/sdk/dsr')