Constant MAX_DECODED_PAYLOAD

pub const MAX_DECODED_PAYLOAD: usize = _; // 8_388_608usize

Largest payload an EncodedPayload element may decode to.

The adapters cap an inbound frame at 16 MiB, and hex doubles what it encodes, so this is the bound that already applies — stated here so that raising a frame limit does not silently raise this one too, and so the crate holds on its own if some future caller has no frame cap of its own.