refactor: 移除数据大屏页面及相关组件，更新滚动容器逻辑与配置

1. 移除dashboard数据大屏页面及全部依赖的图表、统计组件
2. 重构主滚动容器选择逻辑，统一使用getMainScrollEl获取滚动元素
3. 更新配置项，添加TRUSTED_PROXY_HOPS与IP2REGION相关配置
4. 替换IP归属地查询为离线本地解析，移除相关HTTP请求配置
5. 简化OAuth与微信小程序登录的background_tasks参数传递
6. 修复系统参数描述与前端提示文案，更新alembic版本清理逻辑
7. 简化页面滚动重置逻辑，过滤隐藏标签页

frontend/web/src/components/base/fa-back-to-top/index.vue

@@ -19,7 +19,7 @@
 </template>
 
 <script setup lang="ts">
-import { useCommon } from "@/hooks/core/useCommon";
+import { getMainScrollEl, useCommon } from "@/hooks/core/useCommon";
 
 defineOptions({ name: "FaBackToTop" });
 
@@ -29,8 +29,7 @@ const showButton = ref(false);
 const scrollThreshold = 300;
 
 onMounted(() => {
-  const scrollContainer =
-    document.getElementById("app-scroll-main") ?? document.getElementById("app-main");
+  const scrollContainer = getMainScrollEl();
   if (scrollContainer) {
     const { y } = useScroll(scrollContainer);
     watch(y, (newY: number) => {