feat(contract): 新增合同预览和列表组件

refactor(QRCode): 优化二维码组件并修复空值检查
将QRCode组件从print目录移动到components目录，并添加空值检查防止错误

feat(crm): 在合同模型中添加交货日期字段
在CrmContract、CrmContractVo、CrmContractBo及相关Mapper中添加deliveryDate字段

refactor(wms): 统一使用全局QRCode组件路径
将多个文件中的QRCode引用路径从相对路径改为@/components/QRCode

style(order): 调整订单页面标签顺序
调整操作记录和发货配卷标签的顺序

chore: 删除废弃的打印相关文件
移除print目录下不再使用的QRCode、CodeRenderer等组件和页面

klp-ui/src/views/crm/contract/components/ContractPreview.vue

@@ -0,0 +1,106 @@
+<template>
+  <div class="contract-preview">
+    <div v-if="contract" class="preview-content">
+      <h3 style="margin-bottom: 20px; color: #303133; display: flex; justify-content: space-between; align-items: center;">
+        {{ contract.contractName }}
+        <el-select v-hasPermi="['crm:contract:status']" v-model="contract.status" placeholder="请选择合同状态" style="width: 150px;" @change="handleStatusChange">
+          <el-option label="草稿" :value="0" />
+          <el-option label="已生效" :value="1" />
+          <el-option label="已作废" :value="2" />
+          <el-option label="已完成" :value="3" />
+        </el-select>
+      </h3>
+      <el-descriptions :column="2" border>
+        <el-descriptions-item label="合同编号">{{ contract.contractNo }}</el-descriptions-item>
+        <el-descriptions-item label="合同状态">
+          <el-tag :type="contract.status == 0 ? 'info' : contract.status == 1 ? 'success' : contract.status == 2 ? 'danger' : 'primary'">
+            {{ contract.status == 0 ? '草稿' : contract.status == 1 ? '已生效' : contract.status == 2 ? '已作废' : '已完成' }}
+          </el-tag>
+        </el-descriptions-item>
+        <el-descriptions-item label="供方">{{ contract.supplier }}</el-descriptions-item>
+        <el-descriptions-item label="需方">{{ contract.customer }}</el-descriptions-item>
+        <el-descriptions-item label="签订时间">{{ parseTime(contract.signTime, '{y}-{m}-{d}') }}</el-descriptions-item>
+        <el-descriptions-item label="交货日期">{{ parseTime(contract.deliveryDate, '{y}-{m}-{d}') }}</el-descriptions-item>
+        <el-descriptions-item label="签订地点">{{ contract.signLocation }}</el-descriptions-item>
+        <el-descriptions-item label="备注">{{ contract.remark }}</el-descriptions-item>
+      </el-descriptions>
+      
+      <div style="margin-top: 20px;">
+        <h4 style="margin-bottom: 10px; color: #606266;">产品内容</h4>
+        <div v-html="contract.productContent" style="border: 1px solid #e4e7ed; padding: 10px; border-radius: 4px;"></div>
+      </div>
+      
+      <div style="margin-top: 20px;">
+        <h4 style="margin-bottom: 10px; color: #606266;">合同内容</h4>
+        <div v-html="contract.contractContent" style="border: 1px solid #e4e7ed; padding: 10px; border-radius: 4px;"></div>
+      </div>
+    </div>
+    <div v-else class="no-selection" style="display: flex; align-items: center; justify-content: center; height: 100%;">
+      <el-empty description="请先选择合同" />
+    </div>
+  </div>
+</template>
+
+<script>
+import { updateContract } from '@/api/crm/contract';
+
+export default {
+  name: "ContractPreview",
+  props: {
+    contract: {
+      type: Object,
+      default: null
+    }
+  },
+  data() {
+    return {
+      statusOptions: [
+        { label: '草稿', value: '0' },
+        { label: '已生效', value: '1' },
+        { label: '已作废', value: '2' },
+        { label: '已完成', value: '3' }
+      ],
+    }
+  },
+  methods: {
+    // 解析时间
+    parseTime(time, pattern) {
+      if (!time) return '';
+      const d = new Date(time);
+      const year = d.getFullYear();
+      const month = (d.getMonth() + 1).toString().padStart(2, '0');
+      const day = d.getDate().toString().padStart(2, '0');
+      const hours = d.getHours().toString().padStart(2, '0');
+      const minutes = d.getMinutes().toString().padStart(2, '0');
+      const seconds = d.getSeconds().toString().padStart(2, '0');
+      return pattern
+        .replace('{y}', year)
+        .replace('{m}', month)
+        .replace('{d}', day)
+        .replace('{h}', hours)
+        .replace('{i}', minutes)
+        .replace('{s}', seconds);
+    },
+    handleStatusChange(value) {
+      this.$emit('updateStatus', value);
+    }
+  }
+};
+</script>
+
+<style scoped>
+.contract-preview {
+  height: 100%;
+  overflow-y: auto;
+  padding: 20px;
+}
+
+.preview-content {
+  height: 100%;
+  overflow-y: auto;
+}
+
+.no-selection {
+  height: 100%;
+}
+</style>