feat(dashboard): extract inline script to standalone dashboard.ts/js, add UI build/check recipes, and add route unit tests

server/src/watcher.rs

@@ -13,7 +13,7 @@ pub fn spawn_watcher(_state: Arc<MemoryState>) {
 
         let mut watcher = match RecommendedWatcher::new(
             move |res| {
-                let _ = tx.blocking_send(res);
+                let _ = tx.try_send(res);
             },
             Config::default(),
         ) {