DecodeTOML decodes toml from r in to v.

NewErrDuplicate returns an ErrInvalid with a standard duplicate message.

Validate returns any errors from calling Validated.ValidateConfig on cfg and any nested types that implement Validated.

Core holds the core configuration.

DatabaseBackup Note: url is stored in Secrets.DatabaseBackupURL.

Validated configurations impose constraints that must be checked.

LogLevel replaces dpanic with crit/CRIT.

UniqueStrings is a helper for tracking unique values in string form.