Add Prettier and ESLint tooling (Refs #77)

src/lib/ui/beta-updates.ts

@@ -1,27 +1,40 @@
 /** Coalesce pushes, serialize refreshes, and recover missed events after reconnect or tab activation. */
 export function betaUpdates(load: () => Promise<unknown>, betaId?: () => number): () => void {
     let timer: ReturnType<typeof setTimeout> | undefined;
-    let stopped = false, running = false, pending = false;
+    let stopped = false,
+        running = false,
+        pending = false;
     const schedule = () => {
         pending = true;
         if (stopped || running || timer || document.hidden) return;
         timer = setTimeout(async () => {
             timer = undefined;
             if (stopped || document.hidden) return;
-            running = true; pending = false;
-            try { await load(); }
-            catch { /* The page owns its error state; later events can retry. */ }
-            finally { running = false; if (pending) schedule(); }
+            running = true;
+            pending = false;
+            try {
+                await load();
+            } catch {
+                /* The page owns its error state; later events can retry. */
+            } finally {
+                running = false;
+                if (pending) schedule();
+            }
         }, 200);
     };
-    const changed = (event: Event) => { if (!betaId || (event as CustomEvent).detail?.betaId === betaId()) schedule(); };
-    const visible = () => { if (!document.hidden) schedule(); };
+    const changed = (event: Event) => {
+        if (!betaId || (event as CustomEvent).detail?.betaId === betaId()) schedule();
+    };
+    const visible = () => {
+        if (!document.hidden) schedule();
+    };
     window.addEventListener('ec:beta-changed', changed);
     window.addEventListener('ec:pipeline-connected', schedule);
     window.addEventListener('ec:fleet-changed', schedule);
     document.addEventListener('visibilitychange', visible);
     return () => {
-        stopped = true; clearTimeout(timer);
+        stopped = true;
+        clearTimeout(timer);
         window.removeEventListener('ec:beta-changed', changed);
         window.removeEventListener('ec:pipeline-connected', schedule);
         window.removeEventListener('ec:fleet-changed', schedule);