Expand description
Fire-and-forget notification to a sidecar. No response, no per-call
timeout. Prefers the streaming multiplexer under
LAND_VINE_STREAMING=1 when the multiplexer cargo feature is
enabled; falls through to unary on any failure. After a successful
wire send, fans out via PublishNotification::Fn so broadcast
subscribers (Effect-TS fibers, OTel emitters, future Mist-WS bridge,
dev log) can observe the same flow concurrently.