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/views/ProfileSettings.vue

@@ -316,10 +316,29 @@ watch(hasUnsavedChanges, (dirty) => emit("dirty-change", dirty), { immediate: tr
 }
 
 .dialog-close {
+  display: inline-flex;
+  flex: 0 0 auto;
+  align-items: center;
+  justify-content: center;
   width: 32px;
   height: 32px;
   margin-top: -4px;
-  color: #718096;
+  padding: 0;
+  border: 1px solid #d7dee8;
+  border-radius: 8px;
+  background: #f8fafc;
+  color: #475569;
+}
+
+.dialog-close:hover,
+.dialog-close:focus-visible {
+  border-color: #b8c4d3;
+  background: #eef2f7;
+  color: #172033;
+}
+
+.dialog-close :deep(.el-icon) {
+  font-size: 18px;
 }
 
 .title {