fix: 修复 VoiceController Map.of 兼容性 + ExploreController 参数不匹配

- VoiceController: Map.of() -> Collections.singletonMap() 兼容 Java 8
- ExploreController: 补齐 takeoutService.roll() 缺失的 taste/priceRange/allergies 参数

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

miniapp/utils/api.js

@@ -0,0 +1,88 @@
+const app = getApp();
+
+// 客户端缓存：key → { data, expireAt }
+const CACHE_PREFIX = 'api_cache_';
+const DEFAULT_TTL = 30 * 60 * 1000; // 默认 30 分钟
+
+function request(method, path, data) {
+  return new Promise((resolve, reject) => {
+    wx.request({
+      url: app.globalData.baseUrl + path,
+      method: method,
+      data: data,
+      header: { 'Content-Type': 'application/json' },
+      success: (res) => {
+        if (res.statusCode === 200 && res.data.code === 200) {
+          resolve(res.data.data);
+        } else {
+          reject(res.data);
+        }
+      },
+      fail: (err) => {
+        reject(err);
+      }
+    });
+  });
+}
+
+/**
+ * 带客户端缓存的 GET 请求
+ * @param {string} path   请求路径
+ * @param {object} data   请求参数
+ * @param {number} ttlMs  缓存时长(毫秒)，默认 30 分钟
+ */
+function getWithCache(path, data, ttlMs) {
+  const cacheKey = CACHE_PREFIX + path + '_' + JSON.stringify(data || {});
+  const ttl = ttlMs || DEFAULT_TTL;
+
+  // 读缓存
+  try {
+    const cached = wx.getStorageSync(cacheKey);
+    if (cached && cached.expireAt > Date.now()) {
+      return Promise.resolve(cached.data);
+    }
+  } catch (e) {
+    // 读取失败，忽略
+  }
+
+  return request('GET', path, data).then((result) => {
+    // 写缓存
+    try {
+      wx.setStorageSync(cacheKey, {
+        data: result,
+        expireAt: Date.now() + ttl
+      });
+    } catch (e) {
+      // 写入失败，忽略（存储满了等）
+    }
+    return result;
+  });
+}
+
+/**
+ * 清除过期缓存
+ */
+function clearExpiredCache() {
+  try {
+    const info = wx.getStorageInfoSync();
+    const keys = info.keys || [];
+    const now = Date.now();
+    keys.forEach((key) => {
+      if (key.startsWith(CACHE_PREFIX)) {
+        const cached = wx.getStorageSync(key);
+        if (cached && cached.expireAt < now) {
+          wx.removeStorageSync(key);
+        }
+      }
+    });
+  } catch (e) {
+    // 静默失败
+  }
+}
+
+module.exports = {
+  get: (path, data) => request('GET', path, data),
+  post: (path, data) => request('POST', path, data),
+  getWithCache,
+  clearExpiredCache
+};

miniapp/utils/location.js

@@ -0,0 +1,37 @@
+const app = getApp();
+
+function getLocation() {
+  return new Promise((resolve, reject) => {
+    const cached = app.globalData.location;
+    if (cached) {
+      resolve(cached);
+      return;
+    }
+
+    wx.getLocation({
+      type: 'gcj02',
+      success: (res) => {
+        const loc = { latitude: res.latitude, longitude: res.longitude };
+        app.globalData.location = loc;
+        resolve(loc);
+      },
+      fail: (err) => {
+        // 常见错误：未授权、隐私协议未同意
+        const msg = err.errMsg || '';
+        if (msg.indexOf('auth deny') >= 0 || msg.indexOf('authorize') >= 0) {
+          wx.showModal({
+            title: '需要定位权限',
+            content: '请在设置中允许小程序获取位置，或点击右上角手动选择位置',
+            confirmText: '去设置',
+            success: (res) => {
+              if (res.confirm) wx.openSetting();
+            }
+          });
+        }
+        reject(new Error('定位失败'));
+      }
+    });
+  });
+}
+
+module.exports = { getLocation };

miniapp/utils/storage.js

@@ -0,0 +1,18 @@
+function get(key, defaultValue) {
+  try {
+    const value = wx.getStorageSync(key);
+    return value !== '' ? value : defaultValue;
+  } catch (e) {
+    return defaultValue;
+  }
+}
+
+function set(key, value) {
+  wx.setStorageSync(key, value);
+}
+
+function remove(key) {
+  wx.removeStorageSync(key);
+}
+
+module.exports = { get, set, remove };