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/schemas/user.py

@@ -89,10 +89,14 @@ class UserLoginActivityRead(BaseModel):
     client_type: Literal["web", "desktop"]
     client_platform: Optional[str] = None
     client_version: Optional[str] = None
+    client_source: Optional[str] = None
+    login_ip: Optional[str] = None
+    ip_location: Optional[str] = None
     login_at: datetime
     last_seen_at: datetime
     ended_at: Optional[datetime] = None
     end_reason: Optional[str] = None
+    activity_status: Literal["ONLINE", "OFFLINE", "ENDED"]
 
     model_config = ConfigDict(from_attributes=True)