feat(phase-26): add Campaign models, endpoints, service with kill chain timeline UI (T-217 to T-220)

backend/app/main.py

@@ -22,6 +22,7 @@ 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.routers import detection_rules as detection_rules_router
+from app.routers import campaigns as campaigns_router
 from app.storage import ensure_bucket_exists
 from app.jobs.mitre_sync_job import start_scheduler, scheduler
 
@@ -68,6 +69,7 @@ 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.include_router(detection_rules_router.router, prefix="/api/v1")
+app.include_router(campaigns_router.router, prefix="/api/v1")
 
 
 @app.get("/health")