Release v4.31.0

Added

• GuidField, an opt-in command form field for Guid properties, exported from @cratis/components/CommandForm. It keeps native Guid values, lets the user type partial drafts, shows format and required errors, and never generates identifiers. On Arc and Arc React 22.19.1 or later an invalid draft blocks submission; on older Arc it shows the error and leaves the value empty. It is not registered by default: register it with registerFieldTypeProvider to use it in AutoCommandForm, as shown in GuidField. Errors you set on the field yourself are left intact. (#314)