Agent Skills: ring:mapping-service-resources

Mapping a Go service's Service -> Module -> Resource hierarchy for dispatch-layer registration: detects modules and per-module PostgreSQL/MongoDB/RabbitMQ resources, database names, and shared databases, generates MongoDB index migration pairs (.up.json/.down.json), detects existing Postgres migrations, emits an HTML report, and offers opt-in S3 upload. Use before ring:adding-multi-tenancy on a new service. Skip for non-Go projects.