fix(请求参数): 修复URL查询参数解析问题

使用手动解析替代URLSearchParams以正确处理特殊字符

@@ -73,9 +73,19 @@ const merge_request_params = (config) => {
   const base_url = parts[0]
   const search = parts.slice(1).join('?')
   const url_params = {}
-  const search_params = new URLSearchParams(search)
-  for (const [key, value] of search_params.entries()) {
-    url_params[key] = value
+  if (search) {
+    const pairs = search.split('&')
+    for (let i = 0; i < pairs.length; i++) {
+      const pair = pairs[i]
+      if (!pair) continue
+      const index = pair.indexOf('=')
+      const raw_key = index >= 0 ? pair.slice(0, index) : pair
+      const raw_value = index >= 0 ? pair.slice(index + 1) : ''
+      const key = decodeURIComponent(raw_key || '')
+      const value = decodeURIComponent(raw_value || '')
+      if (!key) continue
+      url_params[key] = value
+    }
   }
   const merged_params = {
     ...REQUEST_DEFAULT_PARAMS,