Core spring-services module: entities, data, events, security, and light features

Optional Model Context Protocol (MCP) server feature module for spring-services

Optional Slack messaging feature module for spring-services

Optional db-backup-service sidecar client feature module for spring-services

Optional SMTP email sending feature module for spring-services

Optional Meilisearch-backed full-text search feature module for spring-services

Everything bundle: depends on core plus every optional feature module. Drop-in replacement for the pre-split spring-services artifact.