# Utilities

Utilities are pure or near-pure helpers with no database, network client,
runtime watcher, or business repository state.

- `configutil`: partial JSON/Proto merge helpers used by configuration APIs.
- `paymentutil`: payment amount, status, XML/JSON, and signing helpers shared
  by payment adapters.

Do not place Redis, SMTP, object storage, payment SDK clients, or GORM repos in
this directory. Those belong to `internal/integration` or `internal/data`.