Creates a new widget.
agent_prompt is null.pathway_id is null.id (string): Generated widget UUIDpathway_id (string): Associated pathway UUIDagent_id (string | null): Associated agent UUID or nullallowed_domains (string[]): Array of allowed domainsmessages_per_minute (number): Rate limit for messagesconfig (object): Widget configuration objectcreated_at (string): ISO timestampupdated_at (string): ISO timestamp