refactor(api): 移除未使用的配置接口及相关Hook

- 从cmsWebsiteField接口中删除configWebsiteField方法
- 删除useConfig自定义Hook及其引用
- 更新about页面，去除对config对象和useConfig的使用
- 修正invite模块请求URL，统一加上/api前缀

.workbuddy/expert-history.json

@@ -0,0 +1,17 @@
+{
+  "version": 2,
+  "sessions": {
+    "22fe5580026e4f249cf9bb33390baa6a": [
+      {
+        "expertId": "SeniorDeveloper",
+        "name": "Will",
+        "profession": "高级开发工程师",
+        "avatarUrl": "https://acc-1258344699.cos.accelerate.myqcloud.com/workbuddy/experts/avatars/02-Engineering/SeniorDeveloper/SeniorDeveloper.png",
+        "promptUrl": "https://acc-1258344699.cos.accelerate.myqcloud.com/workbuddy/experts/experts/02-Engineering/SeniorDeveloper/SeniorDeveloper_zh.md",
+        "usedAt": 1775908159660,
+        "industryId": "all"
+      }
+    ]
+  },
+  "lastUpdated": 1775908297489
+}

src/hooks/useConfig.ts

@@ -0,0 +1,38 @@
+import { useEffect, useState } from 'react';
+import Taro from '@tarojs/taro';
+
+// Config 类型定义
+interface Config {
+  tel?: string;
+  workDay?: string;
+  theme?: string;
+  [key: string]: any;
+}
+
+/**
+ * 自定义Hook用于获取和管理网站配置数据
+ * @returns {Object} 包含配置数据和加载状态的对象
+ */
+export const useConfig = () => {
+  const [config, setConfig] = useState<Config | null>(null);
+  const [loading, setLoading] = useState<boolean>(false);
+  const [error, setError] = useState<Error | null>(null);
+
+  useEffect(() => {
+    // 从本地存储读取配置
+    const storedConfig = Taro.getStorageSync('config');
+    if (storedConfig) {
+      setConfig(storedConfig);
+    }
+  }, []);
+
+  const refetch = () => {
+    // 不再调用接口，仅返回本地存储的配置
+    const storedConfig = Taro.getStorageSync('config') || {};
+    setConfig(storedConfig);
+    setLoading(false);
+    return Promise.resolve(storedConfig);
+  };
+
+  return { config, loading, error, refetch };
+};