Produces a dependency map for a service architecture — a dependency matrix (who calls whom, sync/async, hard/soft), a blast-radius analysis per service, single points of failure, a graceful- degradation inventory, and recommendations to reduce blast radius. Use when the user says "map our dependencies", "if X goes down what breaks", "find our SPOFs", "blast radius", or lists services and their connections. Use this to understand failure propagation across services; use scalability-assessment for capacity-under-load rather than failure-propagation.
