This directory keeps service-local documentation that is too detailed for the workspace-level architecture document and too diagram-heavy for the module README.

Sections:

Runtime and components
Domain and protocol flows
Operator runbook
Configuration and contract examples

Primary references:

../README.md — service scope, contracts, configuration, operational behaviour.
../openapi.yaml — REST contract.
../PLAN.md — historical staged build-up; kept for archaeology, not as a source of truth.
../../ARCHITECTURE.md — workspace-level architecture.