Many imorovments

ui/dr-ui/src/derived_sync.rs

@@ -87,10 +87,9 @@ pub fn spawn_sync(
     let (tx, rx) = std::sync::mpsc::channel();
 
     std::thread::spawn(move || {
-        let rt = match tokio::runtime::Builder::new_current_thread()
-            .enable_all()
-            .build()
-        {
+        // A current-thread runtime here is what made the library scan itself
+        // rather than adopt the shards the server already had; see net_runtime.
+        let rt = match crate::net_runtime::build() {
             Ok(rt) => rt,
             Err(e) => {
                 let _ = tx.send(SyncMessage::Failed(e.to_string()));