refactor(repo): replace legacy openflare-server with Wavelet rename

Delete the old monolithic openflare-server implementation and rename
Wavelet/ to openflare-server/ to complete the migration consolidation.
Update CI workflows, agent Dockerfiles, and deployment docs for the new
layout (frontend/, docker/Dockerfile).

openflare-server/frontend/app/(main)/components/dashboard/dashboard-utils.ts

@@ -0,0 +1,15 @@
+export {
+  calculateNiceAxisMax,
+  formatBytes,
+  formatBytesPerSecond,
+  formatCompactNumber,
+  formatPercent,
+} from '@/lib/utils/metrics';
+
+export function formatTrendHour(value: string) {
+  const date = new Date(value);
+  if (Number.isNaN(date.getTime())) {
+    return '—';
+  }
+  return `${date.getHours().toString().padStart(2, '0')}:00`;
+}