feat(桌面与监控): 完善工作台导航和登录活动定位

- 优化桌面标签、上下文标题、前进后退、导航栏隐藏和原生菜单体验

- 补充登录会话 IP 采集、地理位置回退、管理端展示及数据库迁移

- 更新桌面发布检查、运维文档和前后端测试覆盖

frontend/src/components/PermissionIpLocations.vue

@@ -45,6 +45,9 @@
             <el-tag v-if="dataQuality && dataQuality.unknown_ip_count" type="warning" effect="plain" round size="small">
               定位 {{ dataQuality.location_coverage_rate }}%
             </el-tag>
+            <el-tag v-if="dataQuality?.external_fallback_ip_count" type="info" effect="plain" round size="small">
+              外部补全 {{ dataQuality.external_fallback_ip_count }} IP
+            </el-tag>
             <el-tooltip content="全屏预览" placement="top">
               <el-button class="map-fullscreen-button" size="small" circle aria-label="全屏预览" @click="openFullscreenPreview">
                 <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M8 3H3v5"/><path d="M16 3h5v5"/><path d="M21 16v5h-5"/><path d="M3 16v5h5"/><path d="M3 3l6 6"/><path d="M21 3l-6 6"/><path d="M21 21l-6-6"/><path d="M3 21l6-6"/></svg>
@@ -205,7 +208,7 @@ const getIpLocationsDays = (preset: TimeRangePreset): number | undefined => {
   };
   return map[preset];
 };
-const mapView = ref<"china" | "flow">("china");
+const mapView = ref<"china" | "flow">("flow");
 const mapMetric = ref<"traffic" | "risk">("traffic");
 const items = ref<IpLocationStatItem[]>([]);
 const summary = ref<IpLocationsResponse["summary"] | null>(null);