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

backend/app/services/monitoring_server_location.py

@@ -21,6 +21,7 @@ import httpx
 
 from app.core.config import settings
 from app.services.geo_location_metadata import resolve_geo_location_metadata
+from app.services.ip_geolocation_fallback import resolve_external_ip_locations
 from app.services.ip_location import resolve_ip_location
 
 logger = logging.getLogger("ctms.monitoring_server_location")
@@ -128,6 +129,11 @@ async def resolve_monitoring_server_location(*, force: bool = False) -> Monitori
         if public_ip:
             ip_location = resolve_ip_location(public_ip)
             metadata = resolve_geo_location_metadata(ip_location)
+            if metadata.longitude is None or metadata.latitude is None:
+                external_location = (await resolve_external_ip_locations([public_ip])).get(public_ip)
+                if external_location is not None:
+                    ip_location = external_location.merge_ip_location(ip_location)
+                    metadata = external_location.to_metadata()
             if metadata.longitude is not None and metadata.latitude is not None:
                 country = metadata.country or ip_location.country
                 name = " / ".join(