feat(phase-27): add advanced ATT&CK Navigator-style heatmap with layers, filters and export (T-221 to T-223)

backend/app/main.py

@@ -23,6 +23,7 @@ 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.routers import heatmap as heatmap_router
 from app.storage import ensure_bucket_exists
 from app.jobs.mitre_sync_job import start_scheduler, scheduler
 
@@ -70,6 +71,7 @@ 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.include_router(heatmap_router.router, prefix="/api/v1")
 
 
 @app.get("/health")