refactor: 统一项目内国际化key的命名空间格式

本次提交对全项目的国际化调用进行了规范化重构：
1. 为中文/英文语言包新增了avatar和gender的别名映射，兼容旧有headImg/sex写法
2. 修正了lang.js中的注释路径错误
3. 将所有页面和组件内的$lang调用从短路径改为带业务模块前缀的完整命名空间路径，例如将$lang('title')改为$lang('article.list.title')
4. 优化了i18n-lazy.js的注释说明，补充了正确的key命名格式示例
5. 统一了分销、订单、会员等模块的国际化key层级，确保所有语言调用路径一致

components/payment/payment.vue

@@ -24,7 +24,7 @@
                         <block v-if="payTypeList.length">
                             <view class="payment-item" v-for="(item, index) in payTypeList" :key="index" @click="payIndex = index">
                                 <view class="iconfont" :class="item.icon"></view>
-                                <text class="name">{{ $lang('components.payment.' + item.type, item.name) }}</text>
+                                <text class="name">{{ $lang(item.i18nKey, item.name) }}</text>
                                 <text class="iconfont" :class="payIndex == index ? 'icon-yuan_checked color-base-text' : 'icon-checkboxblank'"></text>
                             </view>
                         </block>
@@ -65,12 +65,14 @@
                 payTypeList: [{
                         name: '支付宝支付',
                         icon: 'icon-zhifubaozhifu-',
-                        type: 'alipay'
+                        type: 'alipay',
+                        i18nKey: 'components.payment.alipay'
                     },
                     {
                         name: '微信支付',
                         icon: 'icon-weixin1',
-                        type: 'wechatpay'
+                        type: 'wechatpay',
+                        i18nKey: 'components.payment.wechatpay'
                     }
                 ],
                 timer: null,
@@ -80,7 +82,8 @@
                     name: '微信支付',
                     provider: 'wxpay',
                     icon: 'icon-weixin1',
-                    type: 'wechatpay'
+                    type: 'wechatpay',
+                    i18nKey: 'components.payment.wechatpay'
                 }],
                 // #endif
                 // #ifdef MP-ALIPAY
@@ -88,7 +91,8 @@
                     name: '支付宝支付',
                     icon: 'icon-zhifubaozhifu-',
                     type: 'alipay',
-                    provider: 'alipay'
+                    provider: 'alipay',
+                    i18nKey: 'components.payment.alipay'
                 }],
                 // #endif
                 payInfo: null,