Core module: Vert.x DI wiring, common types and exceptions

ConfigRetriever integration with Dagger typed config binding for Vert.x Framework

Context-propagation substrate runtime: ContextHolder impl, registries, propagator, lifecycle helpers

Security API/SPI: identity types, authentication records, authorization contracts, and the sealed verification-source family

Event bus service dispatch with contract-first interfaces and resilience policies

Extension API for the REST framework: interfaces, annotations, lifecycle hooks, middleware

Vert.x-aware MDC, structured logging, and audit trail support

Dagger-based verticle deployer with multi-instance and priority support

Workflow runtime core: plan model, DSL, registry, public WorkflowOperations facade, generic transactional SPIs, side-effect recorder SPI, contract annotations. SQL-free.

Database core: exception hierarchy, pool config, failure mapper, repository interface, row utilities

Transactional messaging core: inbox/outbox domain model, repository SPI, and Dagger module