feat(device): 设备卡片图标替换为型号产品图

- 新增 ED713/ED719/EB15 产品图资源，设备列表卡片图标按型号映射展示
  （subDeviceType 优先、deviceModel 兜底，EB15 为 EP832 网关子设备）
- 未匹配型号回落原字符图标并打印型号字段日志便于核对后端值

src/pages/device/index.module.scss

@@ -165,12 +165,14 @@
 .icon {
   width: 108px;
   height: 108px;
+  padding: 14px;
   border-radius: $radius-circle;
   background: $color-primary-grad;
   display: flex;
   align-items: center;
   justify-content: center;
   margin-bottom: 20px;
+  box-sizing: border-box;
 }
 
 .iconOffline { background: $color-bg-disabled; }
@@ -182,6 +184,13 @@
 
 .iconOffline .iconText { color: $color-text-tertiary; }
 
+.iconImg {
+  width: 80px;
+  height: 80px;
+}
+
+.iconOffline .iconImg { opacity: 0.5; }
+
 .name {
   max-width: 100%;
   font-size: 28px;

src/pages/device/index.tsx

@@ -1,7 +1,7 @@
 import { useState, useCallback } from 'react'
 import { useDidShow } from '@tarojs/taro'
 import Taro from '@tarojs/taro'
-import { View, Text } from '@tarojs/components'
+import { View, Text, Image } from '@tarojs/components'
 import { Navbar } from '@/components/navbar'
 import { Loading } from '@/components/loading'
 import { StateView } from '@/components/state-view'
@@ -12,10 +12,31 @@ import { getHomeList, type HomeInfo } from '@/api/home'
 import { resolveCurrentHome, setCurrentHomeId } from '@/store/currentHome'
 import { ROUTES } from '@/constants/routes'
 import { navigateTo } from '@/utils/navigation'
+import ed713Icon from '@/assets/device/ed713.png'
+import ed719Icon from '@/assets/device/ed719.png'
+import eb15Icon from '@/assets/device/eb15.jpg'
 import styles from './index.module.scss'
 
 const FALLBACK_ICON = '⌂'
 
+// 设备型号 → 产品图：sub-device 优先（EB15 是 EP832 网关下的子设备，
+// 在 deviceModel 中没有对应值，需要走 subDeviceType 分支）。后端有时把型号
+// 放在 deviceModel、有时放 subDeviceType，所以两个字段都查一遍
+const pickDeviceIcon = (device: HomeDevice): string | null => {
+  const model = device.subDeviceType ?? device.deviceModel
+  if (model === 'EB15') return eb15Icon
+  if (model === 'ED713') return ed713Icon
+  if (model === 'ED719') return ed719Icon
+  // 调试：未匹配时打印设备型号字段，方便核对后端实际值（确认后移除）
+  console.log('[ICON] no match', {
+    installId: device.installId,
+    deviceModel: device.deviceModel,
+    subDeviceType: device.subDeviceType,
+    name: device.name
+  })
+  return null
+}
+
 // 设备显示名：优先 name，未命名回落序列号
 const deviceLabel = (device: HomeDevice): string => device.name || device.deviceName
 
@@ -207,7 +228,14 @@ export default function DeviceList() {
             <View key={device.installId} className={styles.card}>
               <View className={styles.cardTop} onClick={() => goDetail(device)}>
                 <View className={`${styles.icon} ${!device.onlineStatus ? styles.iconOffline : ''}`}>
-                  <Text className={styles.iconText}>{FALLBACK_ICON}</Text>
+                  {(() => {
+                    const src = pickDeviceIcon(device)
+                    return src ? (
+                      <Image className={styles.iconImg} src={src} mode="aspectFit" />
+                    ) : (
+                      <Text className={styles.iconText}>{FALLBACK_ICON}</Text>
+                    )
+                  })()}
                 </View>
                 <Text className={styles.name}>{deviceLabel(device)}</Text>
                 <View className={styles.statusRow}>