Incoming Route
data class IncomingRoute(val eventId: NostrEventId, val recipient: PublicKey, val envelopeKind: Nip59EnvelopeKind)
Verified account-routing hint from one signed NIP-59 outer wrapper.
This value authenticates only the outer event and its one canonical recipient tag. Pass the original event to the selected account's incoming API before displaying or persisting any decrypted content.