Components – Core Module

The Core module manages the central domain entities: organisations, projects, users, participants, groups, activities, and vehicles. It follows a hexagonal architecture — the BFF calls it through an inbound service interface, and persistence is abstracted behind outbound repository interfaces.

Components

Component	Technology	Role
Core Service Interface	Kotlin Interface	Inbound port — exposes all domain operations to the BFF
Organisation Service	Kotlin / Domain	Organisation management and options configuration
Project Service	Kotlin / Domain	Project management and options configuration
User Service	Kotlin / Domain	User and project profile management
Participant Service	Kotlin / Domain	Participant, group, and attendance date management
Activity Service	Kotlin / Domain	Activity creation and scheduling
Vehicle Service	Kotlin / Domain	Vehicle management and scheduling
Repository Interfaces	Kotlin Interface	Outbound port — persistence contracts defined by the domain
Repositories	jOOQ / R2DBC	Outbound adapter — implements repository interfaces against the core schema