feat: 添加打印机管理页面，订单详情调用打印接口

src/pages/order/detail.vue

@@ -210,8 +210,29 @@ export default {
       })
     },
     printOrder() {
-      uni.showToast({ title: '打印功能开发中', icon: 'none' })
-      // TODO: 实现打印功能
+      uni.showModal({
+        title: '确认打印',
+        content: '确定要打印此订单小票吗？',
+        success: async (res) => {
+          if (res.confirm) {
+            try {
+              const token = uni.getStorageSync('token')
+              const res = await uni.request({
+                url: `${getApp().globalData.apiBaseUrl}/printers/print/${this.orderId}`,
+                method: 'POST',
+                header: { 'Authorization': `Bearer ${token}` }
+              })
+              if (res.data.code === 0) {
+                uni.showToast({ title: '打印成功', icon: 'success' })
+              } else {
+                uni.showToast({ title: res.data.message || '打印失败', icon: 'none' })
+              }
+            } catch (e) {
+              uni.showToast({ title: '打印失败', icon: 'none' })
+            }
+          }
+        }
+      })
     }
   }
 }