refactor: Consolidate standalone services into admin-v2, add new SDK modules

Remove standalone services (ai-compliance-sdk root, developer-portal,
dsms-gateway, dsms-node, night-scheduler) and legacy compliance/dsgvo pages.
Add new SDK pipeline modules (academy, document-crawler, dsb-portal,
incidents, whistleblower, reporting, sso, multi-tenant, industry-templates).
Add drafting engine, legal corpus files (AT/CH/DE), pitch-deck,
blog and Förderantrag pages.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

backend/main.py

@@ -3,6 +3,8 @@ from fastapi.middleware.cors import CORSMiddleware
 from fastapi.staticfiles import StaticFiles
 from pathlib import Path
 
+from middleware import SDKProtectionMiddleware
+
 from original_service import router as original_router
 from learning_units_api import router as learning_units_router
 from frontend.studio import router as studio_router
@@ -60,6 +62,9 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
+# SDK Protection Middleware (Schutz vor systematischer Enumeration)
+app.add_middleware(SDKProtectionMiddleware)
+
 # Hier hängen wir die einzelnen Service-Router ein.
 # Alle Routen bekommen das Präfix /api, damit das Frontend sie findet.
 app.include_router(original_router, prefix="/api")