feat: 管理端网站监控，浏览量写入独立 monitor.db

请求日志按日 JSONL；page_views 不进主库，避免统计数据撑大 jiang13.db。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/components/admin/MonitorChinaMap.tsx

@@ -0,0 +1,72 @@
+import { useMemo, useState } from 'react';
+import china from '@svg-maps/china';
+import { cn } from '@/lib/utils';
+import { buildChinaRegionCountMap, heatFill, emptyFill } from './monitorMapUtils';
+
+type Loc = { id: string; name: string; path: string };
+
+type RegionStat = {
+  country: string;
+  region?: string;
+  region_iso?: string;
+  count: number;
+};
+
+type Props = {
+  regions: RegionStat[];
+  className?: string;
+};
+
+/** 中国省区地图：按 BIN 解析出的省/区填色 */
+export default function MonitorChinaMap({ regions, className }: Props) {
+  const [hover, setHover] = useState<{ name: string; count: number } | null>(null);
+  const counts = useMemo(() => buildChinaRegionCountMap(regions), [regions]);
+  const max = useMemo(() => Math.max(0, ...Object.values(counts)), [counts]);
+  const hasData = max > 0;
+  const locations = (china as { locations: Loc[]; viewBox: string }).locations;
+  const viewBox = (china as { viewBox: string }).viewBox;
+
+  return (
+    <div className={cn('admin-monitor-svg-wrap', className)}>
+      <svg
+        className="admin-monitor-svg-map"
+        viewBox={viewBox}
+        role="img"
+        aria-label="中国访客地图"
+      >
+        {locations.map((loc) => {
+          const count = counts[loc.id] || 0;
+          return (
+            <path
+              key={loc.id}
+              d={loc.path}
+              fill={heatFill(count, max, hasData)}
+              stroke="hsl(var(--background, 0 0% 100%))"
+              strokeWidth={0.6}
+              className={cn('admin-monitor-svg-path', count > 0 && 'has-data')}
+              onMouseEnter={() => setHover({ name: loc.name, count })}
+              onMouseLeave={() => setHover(null)}
+            >
+              <title>
+                {loc.name}
+                {count > 0 ? ` · ${count}` : ''}
+              </title>
+            </path>
+          );
+        })}
+      </svg>
+      {hover && (
+        <div className="admin-monitor-map-tip" role="status">
+          <strong>{hover.name}</strong>
+          <span>{hover.count > 0 ? hover.count : '—'}</span>
+        </div>
+      )}
+      {!hasData && (
+        <div className="admin-monitor-map-empty-overlay">
+          <p>暂无省级访问数据</p>
+          <p>放置 IP2LOCATION-LITE-DB3.BIN 后按省/区填色</p>
+        </div>
+      )}
+    </div>
+  );
+}