feat(mux/rust): make cargo-publish ready for v0.1.0

- Add version to donglora-client dependency for crates.io
- Set TCP_NODELAY on accepted TCP connections for low-latency framing
- Add CHANGELOG.md

mux/rust/CHANGELOG.md

@@ -0,0 +1,20 @@
+# Changelog
+
+## 0.1.0 — 2026-04-06
+
+Initial release.
+
+### Features
+
+- USB multiplexer daemon: share one DongLoRa dongle with multiple applications
+- Unix domain socket and optional TCP listeners (same COBS-framed protocol)
+- RxPacket broadcast to all connected clients
+- Reference-counted StartRx/StopRx across clients
+- Config locking: first client sets radio config, others must match or fail
+- Auto-reconnect on USB hot-plug with ping verification
+- Bounded per-client send queues (256 frames) with backpressure isolation
+- Smart interception: redundant commands get synthetic responses without
+  hitting the dongle
+- Graceful shutdown on SIGINT/SIGTERM with socket cleanup
+- TCP_NODELAY on accepted connections for low-latency frame delivery
+- CLI: `--port`, `--socket`, `--tcp`, `--verbose` options

mux/rust/Cargo.toml

@@ -10,7 +10,7 @@ keywords = ["lora", "radio", "usb", "multiplexer"]
 categories = ["hardware-support"]
 
 [dependencies]
-donglora-client = { path = "../../clients/rust" }
+donglora-client = { version = "0.1.0", path = "../../clients/rust" }
 anyhow = "1"
 clap = { version = "4", features = ["derive"] }
 tokio = { version = "1", features = ["full"] }

mux/rust/src/daemon.rs

@@ -495,6 +495,8 @@ async fn accept_tcp_clients(
         match accept_result {
             Ok((stream, addr)) => {
                 debug!("TCP connection from {addr}");
+                // Low-latency: disable Nagle (COBS frames are small)
+                let _ = stream.set_nodelay(true);
                 let (read_half, write_half) = stream.into_split();
                 spawn_client(read_half, write_half, state.clone(), cmd_tx.clone(), shutdown.clone());
             }