The plugin registers its IValidationService under
CAPABILITIES.VALIDATION at PLUGIN_PRIORITY.HIGH (100) so validation is
available before most other plugins register — matching the band used by
ConfigPlugin and LoggerPlugin.
The error formatter is resolved once during registration and reused for all
subsequent requests.
Creates the ValidationPlugin.
The plugin registers its
IValidationServiceunderCAPABILITIES.VALIDATIONatPLUGIN_PRIORITY.HIGH(100) so validation is available before most other plugins register — matching the band used byConfigPluginandLoggerPlugin.The error formatter is resolved once during registration and reused for all subsequent requests.