release(v1.7.32-alpha): fix frontend tarball layout + mDNS shutdown hang

- HOTFIX: v1.7.31-alpha's frontend tarball was packaged with a
  `neode-ui/` top-level directory instead of the flat layout v1.7.30
  and earlier used. Nodes that applied v1.7.31 ended up with
  `/opt/archipelago/web-ui/neode-ui/index.html` instead of
  `/opt/archipelago/web-ui/index.html`, and nginx returned 403/500.
  v1.7.32's tarball is built with `tar -C web/dist/neode-ui .` so
  files land directly at web-ui root. Broken nodes auto-heal on this
  update (web-ui dir is replaced).
- transport/lan.rs: add Drop impl that calls ServiceDaemon::shutdown()
  on the mdns_sd daemon. Without this the OS thread it spawns, plus
  the blocking `receiver.recv()` task, keep the tokio runtime alive
  past SIGTERM — long enough for systemd's TimeoutStopSec to SIGKILL
  the service and mark it Failed. Was visible on every update:
  "shut down cleanly" logged, then 15s later systemd forcibly kills.
- main.rs: after logging "Archipelago shut down cleanly", call
  `std::process::exit(0)` explicitly. Belt-and-suspenders against
  any future non-daemon thread creeping in (reqwest resolver pool,
  etc.) and causing the same SIGKILL regression.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

core/Cargo.lock

@@ -80,7 +80,7 @@ checksum = "a23eb6b1614318a8071c9b2521f36b424b2c83db5eb3a0fead4a6c0809af6e61"
 
 [[package]]
 name = "archipelago"
-version = "1.7.31-alpha"
+version = "1.7.32-alpha"
 dependencies = [
  "anyhow",
  "archipelago-container",

core/archipelago/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "archipelago"
-version = "1.7.31-alpha"
+version = "1.7.32-alpha"
 edition = "2021"
 description = "Archipelago Bitcoin Node OS - Native backend"
 authors = ["Archipelago Team"]

core/archipelago/src/main.rs

@@ -229,5 +229,14 @@ async fn main() -> Result<()> {
     crash_recovery::remove_pid_marker(&config.data_dir).await;
 
     info!("Archipelago shut down cleanly");
-    Ok(())
+
+    // Hard-exit after logging. All business state is persisted by now
+    // (connections drained, PID marker removed, disk flushes done via
+    // tokio::fs awaits). Letting tokio try to drop the runtime instead
+    // can stall for 15s+ on non-daemon OS threads we don't directly
+    // own (mdns_sd daemon, reqwest resolver pool, etc.) — long enough
+    // for systemd's TimeoutStopSec to SIGKILL us and mark the service
+    // Failed, which makes an otherwise-successful update look like a
+    // crash in `systemctl status`.
+    std::process::exit(0);
 }

core/archipelago/src/transport/lan.rs

@@ -160,6 +160,18 @@ impl LanTransport {
     }
 }
 
+impl Drop for LanTransport {
+    // The mdns_sd daemon runs on its own OS thread and the browse
+    // listener task blocks on a sync channel. Without this call both
+    // keep the process alive past SIGTERM, long enough for systemd to
+    // SIGKILL us — which makes a normal update look like a crash.
+    fn drop(&mut self) {
+        if let Some(daemon) = self.daemon.take() {
+            let _ = daemon.shutdown();
+        }
+    }
+}
+
 impl NodeTransport for LanTransport {
     fn kind(&self) -> TransportKind {
         TransportKind::Lan