Function client_decodes 

pub fn client_decodes(
    caps: ClientCapabilities,
    event: &SessionEventWire,
) -> bool

Whether a client that declared caps can decode event once it is a wire frame. The enums nested under Stream have no #[serde(other)], so an older client does not skip an unknown nested variant: the whole frame fails to decode, SocketTransport::next_event treats that as a dead socket and the TUI drops into reconnect — whose Attached replay may carry the very same event and fail again. The daemon therefore drops, per connection, every event the client did not opt into (daemon/conn.rs, live pump and attach replay alike).