Add utility functions for handling public URLs and update API base URL logic

- Implement getProductionApiBaseUrl and normalizePublicUrl functions to manage API URLs based on the browser's origin.
- Update API base URL in request configuration to use getProductionApiBaseUrl.
- Enhance QR code handling in ParticipatingCompaniesTab and OutdoorFairList components to normalize URLs.
- Create a deployment script for frontend builds and server uploads.
- Add tests for the new URL utility functions.

src/utils/publicUrl.ts

@@ -0,0 +1,37 @@
+const INTERNAL_HOSTS = new Set(['127.0.0.1', 'localhost', '0.0.0.0', '::1']);
+
+function getBrowserOrigin() {
+  return typeof window === 'undefined' ? '' : window.location.origin;
+}
+
+/**
+ * 生产环境 API 使用当前浏览器访问的 origin，避免把后端内网地址编译进前端产物。
+ */
+export function getProductionApiBaseUrl(origin = getBrowserOrigin()) {
+  const normalizedOrigin = origin.replace(/\/+$/, '');
+  return `${normalizedOrigin || ''}/api/shihezi/`;
+}
+
+/**
+ * 后端可能因为反向代理配置返回内网 H5 地址，前端展示和打开二维码时使用当前公开 origin。
+ */
+export function normalizePublicUrl(value?: string, currentOrigin = getBrowserOrigin()) {
+  if (!value || !currentOrigin || !/^https?:\/\//i.test(value)) {
+    return value;
+  }
+
+  try {
+    const url = new URL(value);
+    const browserUrl = new URL(currentOrigin);
+    if (
+      INTERNAL_HOSTS.has(url.hostname.toLowerCase()) &&
+      !INTERNAL_HOSTS.has(browserUrl.hostname.toLowerCase())
+    ) {
+      url.protocol = browserUrl.protocol;
+      url.host = browserUrl.host;
+    }
+    return url.toString();
+  } catch {
+    return value;
+  }
+}