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)/nodes/components/disk-io-trend-chart.tsx

@@ -0,0 +1,54 @@
+'use client';
+
+import {TrendChart} from '@/components/data/trend-chart';
+import {
+  Card,
+  CardContent,
+  CardDescription,
+  CardHeader,
+  CardTitle,
+} from '@/components/ui/card';
+import type {DiskIOTrendPoint} from '@/lib/services/openflare';
+
+import {formatBytes, formatTrendHour} from '../../components/dashboard/dashboard-utils';
+
+export function DiskIOTrendChart({
+  points,
+  title = '24 小时磁盘 IO 趋势',
+  description = '观察磁盘读写变化，辅助判断日志放大、缓存抖动或磁盘压力。',
+}: {
+  points: DiskIOTrendPoint[];
+  title?: string;
+  description?: string;
+}) {
+  return (
+    <Card className="border-dashed shadow-none">
+      <CardHeader>
+        <CardTitle className="text-sm font-semibold">{title}</CardTitle>
+        <CardDescription className="text-xs">{description}</CardDescription>
+      </CardHeader>
+      <CardContent>
+        <TrendChart
+          labels={points.map((point) => formatTrendHour(point.bucket_started_at))}
+          yAxisValueFormatter={formatBytes}
+          series={[
+            {
+              label: '磁盘读',
+              color: '#a78bfa',
+              fillColor: 'rgba(167, 139, 250, 0.14)',
+              variant: 'area',
+              values: points.map((point) => point.disk_read_bytes),
+              valueFormatter: formatBytes,
+            },
+            {
+              label: '磁盘写',
+              color: '#fb7185',
+              values: points.map((point) => point.disk_write_bytes),
+              valueFormatter: formatBytes,
+            },
+          ]}
+        />
+      </CardContent>
+    </Card>
+  );
+}