feat(incidents): Go Incidents nach Python migrieren, Proxy umleiten, 50 Tests

- incident_routes.py: 15 Endpoints (CRUD, Risk Assessment, Art. 33/34 Notifications, Measures, Timeline, Close, Stats)
- Neuer Endpoint PUT /{id}/status (nicht in Go vorhanden, Frontend braucht ihn)
- Proxy von ai-compliance-sdk:8090 auf backend-compliance:8002 umgeleitet
- Go incidents_handlers.go + main.go als DEPRECATED markiert
- 50/50 Tests bestanden

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

backend-compliance/compliance/api/__init__.py

@@ -28,6 +28,7 @@ from .banner_routes import router as banner_router
 from .extraction_routes import router as extraction_router
 from .tom_routes import router as tom_router
 from .vendor_compliance_routes import router as vendor_compliance_router
+from .incident_routes import router as incident_router
 
 # Include sub-routers
 router.include_router(audit_router)
@@ -57,6 +58,7 @@ router.include_router(banner_router)
 router.include_router(extraction_router)
 router.include_router(tom_router)
 router.include_router(vendor_compliance_router)
+router.include_router(incident_router)
 
 __all__ = [
     "router",
@@ -86,4 +88,5 @@ __all__ = [
     "banner_router",
     "tom_router",
     "vendor_compliance_router",
+    "incident_router",
 ]