fix(openflare): ClickHouse count scan and dashboard traffic metrics

- Scan ClickHouse count()/countIf() aggregates as uint64 before int64 conversion
- Fix access log list count, region stats, and delete pre-count queries
- Aggregate dashboard 24h traffic totals from hourly trend buckets
- Show current hour value in traffic trend chart summary
- Rename docker-compose service to openflare
- Remove redundant config preview section from performance page

frontend/app/(main)/components/dashboard/traffic-trend-chart.tsx

@@ -30,6 +30,8 @@ export function TrafficTrendChart({
       <CardContent>
         <TrendChart
           labels={points.map((point) => formatTrendHour(point.bucket_started_at))}
+          summaryScope="last-point"
+          summaryHint="当前小时"
           series={[
             {
               label: '请求量',

frontend/app/(main)/performance/page.tsx

@@ -16,7 +16,7 @@ import {Input} from "@/components/ui/input"
 import {Label} from "@/components/ui/label"
 import {Select, SelectContent, SelectItem, SelectTrigger, SelectValue,} from "@/components/ui/select"
 import {Switch} from "@/components/ui/switch"
-import {ConfigVersionService, OptionService} from "@/lib/services/openflare"
+import {OptionService} from "@/lib/services/openflare"
 
 import {
   defaultPerformanceFields,
@@ -44,12 +44,6 @@ export default function PerformancePage() {
     enabled: !!user?.is_admin,
   })
 
-  const previewQuery = useQuery({
-    queryKey: ["openflare", "config-preview"],
-    queryFn: () => ConfigVersionService.preview(),
-    enabled: !!user?.is_admin,
-  })
-
   useEffect(() => {
     if (!optionsQuery.data) return
     setFields(mapOptionsToFields(optionsToMap(optionsQuery.data)))
@@ -154,25 +148,6 @@ export default function PerformancePage() {
         </Button>
       </div>
 
-      <div className="grid gap-3 sm:grid-cols-3">
-        <div className="rounded-lg border border-dashed px-4 py-3">
-          <p className="text-[10px] uppercase tracking-wider text-muted-foreground">发布链路</p>
-          <p className="mt-2 text-sm font-medium">受管模板渲染</p>
-        </div>
-        <div className="rounded-lg border border-dashed px-4 py-3">
-          <p className="text-[10px] uppercase tracking-wider text-muted-foreground">预览规则数</p>
-          <p className="mt-2 text-sm font-semibold">
-            {previewQuery.data?.route_count ?? "—"} 条
-          </p>
-        </div>
-        <div className="rounded-lg border border-dashed px-4 py-3">
-          <p className="text-[10px] uppercase tracking-wider text-muted-foreground">配置预览</p>
-          <p className="mt-2 text-sm text-muted-foreground">
-            在配置发布页查看完整 nginx 渲染结果
-          </p>
-        </div>
-      </div>
-
       <Card className="border-dashed shadow-none">
         <CardHeader className="flex flex-row items-center justify-between">
           <div>