修复世界地图不显示的问题

- 将地图配置从 geo + geoIndex 改为直接在 series 中使用 map: 'world'
- nameMap 放在 series 中，避免 geo.nameMap 导致的名称匹配失败
- 工具提示中动态翻译国家名称显示中文

frontend/src/pages/admin/index.vue

@@ -558,8 +558,9 @@ function updateMapOption() {
       },
       formatter: (params: any) => {
         if (params.data && params.data.count > 0) {
+          const displayName = worldNameMap[params.name] || params.name
           return `<div style="padding: 4px;">
-            <div style="font-weight: 600; margin-bottom: 6px; font-size: 13px;">${params.name}</div>
+            <div style="font-weight: 600; margin-bottom: 6px; font-size: 13px;">${displayName}</div>
             <div style="display: flex; align-items: center; gap: 6px; margin-bottom: 3px;">
               <span style="display:inline-block;width:8px;height:8px;border-radius:50%;background:#22c55e;"></span>
               <span>${t('admin.online')}: ${params.data.online}</span>
@@ -574,44 +575,42 @@ function updateMapOption() {
             </div>
           </div>`
         }
+        const displayName = worldNameMap[params.name] || params.name
         return `<div style="padding: 4px;">
-          <div style="font-weight: 600; margin-bottom: 4px; font-size: 13px;">${params.name}</div>
+          <div style="font-weight: 600; margin-bottom: 4px; font-size: 13px;">${displayName}</div>
           <div style="color: ${dark ? '#94a3b8' : '#64748b'};">${t('admin.noUserData')}</div>
         </div>`
       },
     },
-    geo: {
-      map: 'world',
-      roam: true,
-      zoom: 1.2,
-      nameMap: worldNameMap,
-      label: {
-        show: false,
-      },
-      emphasis: {
-        label: {
-          show: true,
-          color: dark ? '#f8fafc' : '#0f172a',
-          fontSize: 11,
-          fontWeight: 600,
-        },
-        itemStyle: {
-          areaColor: dark ? '#334155' : '#f1f5f9',
-          borderColor: dark ? '#475569' : '#94a3b8',
-          borderWidth: 1,
-        },
-      },
-      itemStyle: {
-        areaColor: dark ? '#1e293b' : '#e2e8f0',
-        borderColor: dark ? '#334155' : '#cbd5e1',
-        borderWidth: 0.5,
-      },
-    },
     series: [
       {
         name: t('admin.userDistribution'),
         type: 'map',
-        geoIndex: 0,
+        map: 'world',
+        roam: true,
+        zoom: 1.2,
+        nameMap: worldNameMap,
+        label: {
+          show: false,
+        },
+        emphasis: {
+          label: {
+            show: true,
+            color: dark ? '#f8fafc' : '#0f172a',
+            fontSize: 11,
+            fontWeight: 600,
+          },
+          itemStyle: {
+            areaColor: dark ? '#334155' : '#f1f5f9',
+            borderColor: dark ? '#475569' : '#94a3b8',
+            borderWidth: 1,
+          },
+        },
+        itemStyle: {
+          areaColor: dark ? '#1e293b' : '#e2e8f0',
+          borderColor: dark ? '#334155' : '#cbd5e1',
+          borderWidth: 0.5,
+        },
         data: seriesData,
       },
     ],