feat(phase-24): integrate MITRE D3FEND defensive techniques with ATT&CK mapping (T-213, T-214)

backend/app/main.py

@@ -20,6 +20,7 @@ from app.routers import notifications as notifications_router
 from app.routers import reports as reports_router
 from app.routers import data_sources as data_sources_router
 from app.routers import threat_actors as threat_actors_router
+from app.routers import d3fend as d3fend_router
 from app.storage import ensure_bucket_exists
 from app.jobs.mitre_sync_job import start_scheduler, scheduler
 
@@ -64,6 +65,7 @@ app.include_router(notifications_router.router, prefix="/api/v1")
 app.include_router(reports_router.router, prefix="/api/v1")
 app.include_router(data_sources_router.router, prefix="/api/v1")
 app.include_router(threat_actors_router.router, prefix="/api/v1")
+app.include_router(d3fend_router.router, prefix="/api/v1")
 
 
 @app.get("/health")