fix: 全面修复项目问题

后端修复:
- 验证码存储与校验机制
- 订单创建事务+库存扣减
- GetStats字段名错误
- VerifyEmail改为POST
- 供应商更新字段白名单
- 文件删除安全检查
- 抽奖安全随机数
- 用户管理CRUD
- 订单取消/确认收货
- 工单回复
- Toggle返回新数据
- 移除死代码

前端修复:
- 404兜底路由
- 401软跳转
- API层统一
- 面包屑补充banners
- 国际化完善
- 购物车并行删除
- 退出清理购物车
- 供应商Dashboard数据
- 工单详情页
- 订单取消/确认收货

frontend/src/views/user/TicketDetail.vue

@@ -0,0 +1,166 @@
+<template>
+  <div class="ticket-detail-page">
+    <BackNav />
+    <div v-if="ticket" class="ticket-card">
+      <div class="ticket-header">
+        <h2>{{ ticket.subject }}</h2>
+        <el-tag :type="statusType(ticket.status)">{{ statusText(ticket.status) }}</el-tag>
+      </div>
+      <div class="ticket-meta">
+        <span>分类：{{ ticket.category }}</span>
+        <span>创建时间：{{ formatDate(ticket.created_at) }}</span>
+      </div>
+      <div class="ticket-content">
+        <p>{{ ticket.content }}</p>
+      </div>
+
+      <div v-if="ticket.reply" class="reply-section">
+        <h3>回复</h3>
+        <div class="reply-content" v-html="formatReply(ticket.reply)"></div>
+      </div>
+
+      <div v-if="ticket.status !== 'resolved' && ticket.status !== 'closed'" class="reply-form">
+        <h3>追加回复</h3>
+        <el-input v-model="replyContent" type="textarea" :rows="4" placeholder="请输入回复内容" />
+        <el-button type="primary" @click="submitReply" :loading="submitting" style="margin-top: 12px">提交回复</el-button>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+import { useRoute } from 'vue-router'
+import { ElMessage } from 'element-plus'
+import { ticketApi } from '../../api'
+import BackNav from '../../components/BackNav.vue'
+
+const route = useRoute()
+const ticket = ref<any>(null)
+const replyContent = ref('')
+const submitting = ref(false)
+
+const statusMap: Record<string, string> = {
+  pending: '待处理', processing: '处理中', resolved: '已解决', closed: '已关闭',
+}
+const statusTypeMap: Record<string, string> = {
+  pending: 'warning', processing: 'primary', resolved: 'success', closed: 'info',
+}
+function statusText(s: string) { return statusMap[s] || s }
+function statusType(s: string) { return statusTypeMap[s] || 'info' }
+
+function formatDate(date: string) {
+  if (!date) return '-'
+  const d = new Date(date)
+  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')} ${String(d.getHours()).padStart(2, '0')}:${String(d.getMinutes()).padStart(2, '0')}`
+}
+
+function formatReply(reply: string) {
+  return reply.replace(/\n/g, '<br>').replace(/---/g, '<hr style="border-color: rgba(255,255,255,0.1); margin: 12px 0;">')
+}
+
+async function fetchTicket() {
+  try {
+    const id = Number(route.params.id)
+    const res: any = await ticketApi.getById(id)
+    ticket.value = res.data
+  } catch {
+    ElMessage.error('获取工单失败')
+  }
+}
+
+async function submitReply() {
+  if (!replyContent.value.trim()) {
+    ElMessage.warning('请输入回复内容')
+    return
+  }
+  submitting.value = true
+  try {
+    await ticketApi.reply(Number(route.params.id), { content: replyContent.value })
+    ElMessage.success('回复成功')
+    replyContent.value = ''
+    fetchTicket()
+  } catch {
+    ElMessage.error('回复失败')
+  } finally {
+    submitting.value = false
+  }
+}
+
+onMounted(fetchTicket)
+</script>
+
+<style scoped lang="scss">
+.ticket-detail-page { padding: 0; }
+
+.ticket-card {
+  background: #2d2d44;
+  border: 1px solid rgba(255, 255, 255, 0.06);
+  border-radius: 12px;
+  padding: 24px;
+}
+
+.ticket-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 12px;
+
+  h2 {
+    font-size: 18px;
+    font-weight: 600;
+    color: #fff;
+    margin: 0;
+  }
+}
+
+.ticket-meta {
+  display: flex;
+  gap: 16px;
+  font-size: 13px;
+  color: rgba(255, 255, 255, 0.5);
+  margin-bottom: 16px;
+}
+
+.ticket-content {
+  padding: 16px;
+  background: rgba(255, 255, 255, 0.04);
+  border-radius: 8px;
+  color: rgba(255, 255, 255, 0.8);
+  line-height: 1.6;
+  margin-bottom: 20px;
+}
+
+.reply-section {
+  margin-bottom: 20px;
+  padding-top: 16px;
+  border-top: 1px solid rgba(255, 255, 255, 0.06);
+
+  h3 {
+    font-size: 15px;
+    font-weight: 600;
+    color: rgba(255, 255, 255, 0.9);
+    margin-bottom: 12px;
+  }
+}
+
+.reply-content {
+  padding: 16px;
+  background: rgba(78, 110, 242, 0.08);
+  border-radius: 8px;
+  color: rgba(255, 255, 255, 0.8);
+  line-height: 1.6;
+}
+
+.reply-form {
+  padding-top: 16px;
+  border-top: 1px solid rgba(255, 255, 255, 0.06);
+
+  h3 {
+    font-size: 15px;
+    font-weight: 600;
+    color: rgba(255, 255, 255, 0.9);
+    margin-bottom: 12px;
+  }
+}
+</style>