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

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

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

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

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

Authentication, authorization, and security context bridging for the REST framework

Default security runtime: authorization engine, action registry, in-memory policy resolvers, security event emitter, and Dagger modules

Timer-based cron job scheduling with EVERY_INSTANCE and SINGLE_INSTANCE execution modes

Programmatic rate-limit API, policy model, typed keys, and the local Bucket4j engine

Provider-neutral programmatic cache API, SPI, and runtime contracts

Holder-bound CorrelationContext runtime (mutable impl, factory, mutator, encoders, seeder, Dagger module)