feat(device): 跌倒状态卡图标替换为产品状态图

- 新增 src/assets/event/ 三张状态图（fall-alert 摔倒报警 / fall-suspect
  疑似摔倒 / fall-cleared 解除摔倒）
- FallStatusCard 按 alarmType 映射产品图，未匹配状态（驻留/正常/离线）
  仍回退 ⌁ 占位字符

src/pages/device/feature/fall-status-card.module.scss

@@ -71,6 +71,11 @@
   color: $color-primary;
 }
 
+.fallIconImg {
+  width: 110px;
+  height: 110px;
+}
+
 .fallStatusText {
   margin-top: 32px;
   font-size: 44px;

src/pages/device/feature/fall-status-card.tsx

@@ -1,5 +1,8 @@
-import { View, Text } from '@tarojs/components'
+import { View, Text, Image } from '@tarojs/components'
 import { FALL_STATUS_MAP } from '@/constants/enums'
+import fallAlertIcon from '@/assets/event/fall-alert.png'
+import fallSuspectIcon from '@/assets/event/fall-suspect.png'
+import fallClearedIcon from '@/assets/event/fall-cleared.png'
 import styles from './fall-status-card.module.scss'
 
 interface Props {
@@ -19,11 +22,19 @@ const STATUS_CLS: Record<number, string> = {
   3104: 'warning'
 }
 
+// 状态 → 产品状态图：未匹配时（如 3104 驻留、正常、离线）回退到 ⌁ 占位
+const FALL_ICON_MAP: Record<number, string> = {
+  3101: fallAlertIcon,
+  3102: fallSuspectIcon,
+  3103: fallClearedIcon
+}
+
 // ED719 跌倒检测状态卡：实时状态大卡（参考 web 端 DeviceScgDashboard DeviceItem 布局）
 export function FallStatusCard({ alarmType, status, lastTime, version, online }: Props) {
   const code = alarmType ?? status
   const label = FALL_STATUS_MAP[code ?? -1] ?? (online ? '正常' : '离线')
   const level = STATUS_CLS[code ?? -1] ?? (online ? 'normal' : 'offline')
+  const iconSrc = code != null ? FALL_ICON_MAP[code] : undefined
 
   return (
     <View className={`${styles.fallCard} ${styles[`fallCard${cap(level)}`]}`}>
@@ -36,7 +47,11 @@ export function FallStatusCard({ alarmType, status, lastTime, version, online }:
       </View>
 
       <View className={`${styles.fallIconWrap} ${styles[`fallIconWrap${cap(level)}`]}`}>
-        <Text className={styles.fallIcon}>⌁</Text>
+        {iconSrc ? (
+          <Image className={styles.fallIconImg} src={iconSrc} mode="aspectFit" />
+        ) : (
+          <Text className={styles.fallIcon}>⌁</Text>
+        )}
       </View>
       <Text className={`${styles.fallStatusText} ${styles[`fallStatusText${cap(level)}`]}`}>{label}</Text>
       {lastTime && <Text className={styles.fallTime}>更新于 {lastTime}</Text>}