Arcscord error codes

ArcscordError.code is a stable public identifier. Adding a code is backward-compatible; removing or renaming one is a breaking change.

Code	Meaning	Important metadata
CLIENT_READY_TIMEOUT	Client readiness timed out	timeoutMs
APPLICATION_UNAVAILABLE	Discord application data was unavailable	operation
COMMAND_VALIDATION_FAILED	A command definition is invalid	rule, path, group
COMMAND_REGISTRATION_FAILED	Discord command synchronization failed	scope, guildId, operation
COMMAND_RESOLUTION_FAILED	An interaction could not be resolved to a command surface	commandName, reason
COMPONENT_ROUTE_INVALID	A component route is malformed	route, reason
COMPONENT_ROUTE_DUPLICATE	Two components use the same canonical route	route, canonicalRoute
COMPONENT_CUSTOM_ID_TOO_LONG	A generated custom ID exceeds Discord's limit	route, length, maximum
EVENT_HANDLER_DUPLICATE	Two event handlers use the same name	handlerName, eventName
EVENT_INTENT_MISSING	Required gateway intents are missing	missingIntents, presentIntents
INTERACTION_OPERATION_FAILED	Reply, edit, defer, modal, or autocomplete response failed	operation
COMMAND_NOT_FOUND	No loaded command matched an interaction	dispatch context
COMMAND_OPTION_PARSING_FAILED	Slash-command option parsing failed	parsing context
COMMAND_CONTEXT_CREATION_FAILED	The interaction did not match the command surface	dispatch context
COMMAND_DEFER_FAILED	Command pre-reply failed	dispatch context
COMPONENT_NOT_FOUND	No component route matched	route context
COMPONENT_MULTIPLE_MATCHES	Multiple component routes matched	route context
COMPONENT_CONTEXT_CREATION_FAILED	Component context or modal parsing failed	dispatch context
COMPONENT_TYPED_SELECT_INVALID_VALUES	Typed select values violated their declaration	selected/allowed values
COMPONENT_DEFER_FAILED	Component pre-reply failed	dispatch context
AUTOCOMPLETE_EXECUTION_FAILED	Autocomplete dispatch or response failed	command context