OptionalidempotencyDurability (BotConfig.durability): idempotency key of this send in the outbox. A key
that was already sent is answered from the outbox without sending again. Optional —
sends made while handling an inbound message get a deterministic key automatically.
With durability on, core strips it before calling the provider; with it off, it is
passed through and providers ignore it.
OptionalquotedOptionalmentionsOptionalinteractionReply INTO a time-boxed interaction (Discord interaction token, Telegram callback). Providers that lack the concept ignore it.
OptionalplatformTransport-native passthrough (WA ephemeralExpiration, Discord flags, ...).
Options common to any send.