Initial commit: TradeMate 外贸小助手 MVP

项目结构:
- backend/     Python FastAPI 后端
- uni-app/     uni-app跨端前端
- docs/        设计文档
- docker-compose.yml  Docker编排
- nginx/scripts/systemd 运维配置

已完成功能:
- 用户认证 (JWT)
- 智能翻译 + 回复建议
- 营销素材生成
- 客户管理 + 沉默检测
- 报价单管理
- 产品库管理
- 汇率换算
- 推送通知 (uni-push)
- WhatsApp Webhook框架
- Celery定时任务

miniprogram/pages/login/login.wxml

@@ -0,0 +1,50 @@
+<view class="container">
+  <view class="logo-section">
+    <view class="logo">TradeMate</view>
+    <view class="subtitle">外贸小助手</view>
+  </view>
+
+  <view class="form-section">
+    <view class="form-title">{{isRegister ? '注册' : '登录'}}</view>
+
+    <view class="input-group">
+      <input class="input" type="number" placeholder="手机号" bindinput="onPhoneInput" value="{{phone}}" />
+    </view>
+
+    <view class="input-group" wx:if="{{isRegister}}">
+      <input class="input" type="text" placeholder="用户名" bindinput="onUsernameInput" value="{{username}}" />
+    </view>
+
+    <view class="input-group">
+      <input class="input" type="password" placeholder="密码" bindinput="onPasswordInput" value="{{password}}" />
+    </view>
+
+    <view class="error" wx:if="{{error}}">{{error}}</view>
+
+    <button class="submit-btn" bindtap="handleSubmit" disabled="{{loading}}">
+      {{loading ? '处理中...' : (isRegister ? '注册' : '登录')}}
+    </button>
+
+    <view class="toggle-mode" bindtap="toggleMode">
+      {{isRegister ? '已有账号？立即登录' : '没有账号？立即注册'}}
+    </view>
+
+    <view class="divider">
+      <view class="line"></view>
+      <text class="text">或</text>
+      <view class="line"></view>
+    </view>
+
+    <button class="wechat-btn" bindtap="handleWechatLogin">
+      <text class="wechat-icon">W</text>
+      微信一键登录
+    </button>
+  </view>
+
+  <view class="footer">
+    <text class="agreement">登录即表示同意</text>
+    <text class="link">《用户协议》</text>
+    <text class="agreement">和</text>
+    <text class="link">《隐私政策》</text>
+  </view>
+</view>