identity

type Sender struct {
	// ID is a unique identifier for the user (e.g. Email, Username, API Key abbreviation, or "demo-user").
	ID string
	// Username is the unique handle (e.g., Slack member ID, Discord username).
	Username string
	// DisplayName is a human-readable display name, if available.
	DisplayName string
	// Role defines the access tier of the user (e.g. "admin", "user", "agent", "demo").
	Role string
	// AuthenticatedVia describes which strategy verified this sender
	// (e.g. "oidc", "jwt", "apikey", "password", "none").
	AuthenticatedVia string
}