fix(events): load system events on page refresh in ops view

Events were only loaded when switching to config view, but the
system events panel lives in ops view, leaving it empty on refresh.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

web/js/app.js

@@ -191,7 +191,7 @@ async function bootstrap() {
   renderChart();
   startPointSocket();
 
-  await withStatus(loadUnits());
+  await withStatus(Promise.all([loadUnits(), loadEvents()]));
   startOps();
 }