fix: polish earth legend and info panel interactions

frontend/public/earth/js/info-card.js

@@ -30,6 +30,25 @@ const CARD_CONFIG = {
       { key: 'apogee', label: '远地点', unit: 'km' }
     ]
   },
+  bgp: {
+    icon: '📡',
+    title: 'BGP异常详情',
+    className: 'bgp',
+    fields: [
+      { key: 'anomaly_type', label: '异常类型' },
+      { key: 'severity', label: '严重度' },
+      { key: 'status', label: '状态' },
+      { key: 'prefix', label: '前缀' },
+      { key: 'origin_asn', label: '原始 ASN' },
+      { key: 'new_origin_asn', label: '新 ASN' },
+      { key: 'confidence', label: '置信度' },
+      { key: 'collector', label: '采集器' },
+      { key: 'country', label: '国家' },
+      { key: 'city', label: '城市' },
+      { key: 'created_at', label: '创建时间' },
+      { key: 'summary', label: '摘要' }
+    ]
+  },
   supercomputer: {
     icon: '🖥️',
     title: '超算详情',