diff --git a/src/components/vital-wave/index.tsx b/src/components/vital-wave/index.tsx
index 550fc04..1f625ed 100644
--- a/src/components/vital-wave/index.tsx
+++ b/src/components/vital-wave/index.tsx
@@ -4,6 +4,9 @@ import Taro from '@tarojs/taro'
 
 const V_PADDING = 8
 const HEIGHT = 110
+// 纵轴最小跨度（BPM）：心率生理波动常只有个位数，若按 min/max 归一化会把
+// 数 BPM 的微小起伏放大成满幅曲线，视觉误导为剧烈波动
+const MIN_SPAN = 20
 
 interface Props {
   points: number[]
@@ -63,8 +66,13 @@ export function VitalWave({ points, canvasId = 'vitalWave' }: Props) {
 
 function drawWave(canvasId: string, w: number, h: number, pts: number[]) {
   const ctx = Taro.createCanvasContext(canvasId)
-  const min = Math.min(...pts)
-  const max = Math.max(...pts)
+  let min = Math.min(...pts)
+  let max = Math.max(...pts)
+  if (max - min < MIN_SPAN) {
+    const mid = (min + max) / 2
+    min = mid - MIN_SPAN / 2
+    max = mid + MIN_SPAN / 2
+  }
   const span = max - min || 1
   const xAt = (i: number) => (pts.length <= 1 ? 0 : (i / (pts.length - 1)) * w)
   const yAt = (v: number) => h - V_PADDING - ((v - min) / span) * (h - V_PADDING * 2)
diff --git a/src/pages/device/feature/add.tsx b/src/pages/device/feature/add.tsx
index 54dda95..9ca9627 100644
--- a/src/pages/device/feature/add.tsx
+++ b/src/pages/device/feature/add.tsx
@@ -8,6 +8,7 @@ import { StateView } from '@/components/state-view'
 import { addHomeDevice } from '@/api/homeDevice'
 import { getHomeList, type HomeInfo } from '@/api/home'
 import { getRoomList, type HomeRoom } from '@/api/homeRoom'
+import { resolveCurrentHome, setCurrentHomeId } from '@/store/currentHome'
 import { showToast } from '@/utils/toast'
 import { navigateBack } from '@/utils/navigation'
 import styles from './add.module.scss'
@@ -33,9 +34,10 @@ export default function DeviceAdd() {
     setLoadError(false)
     getHomeList()
       .then(async (list) => {
-        const first = list[0] ?? null
+        const first = resolveCurrentHome(list)
         if (cancelled) return
         setHome(first)
+        if (first) setCurrentHomeId(first.homeId)
         if (!first) return
         const roomList = await getRoomList(first.homeId)
         if (cancelled) return
diff --git a/src/pages/device/feature/detail.tsx b/src/pages/device/feature/detail.tsx
index 497b752..d6c4d0d 100644
--- a/src/pages/device/feature/detail.tsx
+++ b/src/pages/device/feature/detail.tsx
@@ -86,7 +86,7 @@ export default function Detail() {
   const fmt = (v: number | undefined): string => (v === undefined || v === null ? '--' : String(v))
 
   const goBleConfig = () => navigateTo(ROUTES.DEVICE_BLE_CONFIG)
-  const goWifiConfig = () => navigateTo(ROUTES.DEVICE_BLE_CONFIG)
+  void goBleConfig
 
   return (
     <View className={styles.page}>
@@ -157,8 +157,10 @@ export default function Detail() {
           <ListRow label="设备型号" value={deviceModel || '-'} />
           <ListRow label="设备 ID" value={installId || '-'} />
           <ListRow label="安装房间" value={device?.roomName ?? '-'} />
+          {/* BLE 配置流程联调未完成，暂隐藏两个配置入口
           <ListRow label="网络配置" arrow onClick={goWifiConfig} />
           <ListRow label="设备配置" arrow onClick={goBleConfig} />
+          */}
         </ListRowGroup>
       </View>
     </View>
diff --git a/src/pages/device/index.tsx b/src/pages/device/index.tsx
index bef8ded..6651f5b 100644
--- a/src/pages/device/index.tsx
+++ b/src/pages/device/index.tsx
@@ -9,6 +9,7 @@ import { BottomSheet } from '@/components/bottom-sheet'
 import { getHomeDeviceList, unbindHomeDevice, type HomeDevice } from '@/api/homeDevice'
 import { getRoomList, type HomeRoom } from '@/api/homeRoom'
 import { getHomeList, type HomeInfo } from '@/api/home'
+import { resolveCurrentHome, setCurrentHomeId } from '@/store/currentHome'
 import { ROUTES } from '@/constants/routes'
 import { navigateTo } from '@/utils/navigation'
 import { showToast } from '@/utils/toast'
@@ -61,10 +62,11 @@ export default function DeviceList() {
     try {
       const list = await getHomeList()
       setFamilies(list)
-      // 若当前未选中，默认选第一条
+      // 未选中时按持久化的 homeId 恢复，失效则回落第一条
       setCurrentFamily((prev) => {
-        const next = prev ?? list[0] ?? null
+        const next = prev ?? resolveCurrentHome(list)
         if (next && next.homeId !== prev?.homeId) {
+          setCurrentHomeId(next.homeId)
           setFilterRoomId('')
           loadDevices(next.homeId)
           loadRooms(next.homeId)
@@ -154,6 +156,7 @@ export default function DeviceList() {
   const confirmFamilySheet = () => {
     if (pendingFamily && pendingFamily.homeId !== currentFamily?.homeId) {
       setCurrentFamily(pendingFamily)
+      setCurrentHomeId(pendingFamily.homeId)
       setFilterRoomId('')
       loadDevices(pendingFamily.homeId)
       loadRooms(pendingFamily.homeId)
diff --git a/src/pages/scene/select.tsx b/src/pages/scene/select.tsx
index f47e207..df2a3fe 100644
--- a/src/pages/scene/select.tsx
+++ b/src/pages/scene/select.tsx
@@ -7,6 +7,7 @@ import { Empty } from '@/components/empty'
 import { StateView } from '@/components/state-view'
 import { BottomSheet } from '@/components/bottom-sheet'
 import { getHomeList, type HomeInfo } from '@/api/home'
+import { resolveCurrentHome, setCurrentHomeId } from '@/store/currentHome'
 import {
   getRoomList, addRoom, updateRoom, deleteRoom, ROOM_SENCE_MAP, type HomeRoom
 } from '@/api/homeRoom'
@@ -45,8 +46,9 @@ export default function SceneSelect() {
     setLoadError(false)
     try {
       const homes = await getHomeList()
-      const first = homes[0] ?? null
+      const first = resolveCurrentHome(homes)
       setHome(first)
+      if (first) setCurrentHomeId(first.homeId)
       if (!first) {
         setList([])
         return
diff --git a/src/store/currentHome.ts b/src/store/currentHome.ts
new file mode 100644
index 0000000..8fa2c0e
--- /dev/null
+++ b/src/store/currentHome.ts
@@ -0,0 +1,18 @@
+import { storage } from '@/utils/storage'
+import type { HomeInfo } from '@/api/home'
+
+// 当前选中家庭持久化 key：设备列表 / 房间管理 / 添加设备三页共享
+const KEY = 'currentHomeId'
+
+export function setCurrentHomeId(homeId: string): void {
+  storage.set(KEY, homeId)
+}
+
+// 从家庭列表解析当前家庭：优先已持久化的选择，失效（不在列表，如切换账号）时回落第一条并重新落盘
+export function resolveCurrentHome(homes: HomeInfo[]): HomeInfo | null {
+  if (homes.length === 0) return null
+  const stored = storage.get<string>(KEY)
+  const next = homes.find((h) => h.homeId === stored) ?? homes[0]
+  storage.set(KEY, next.homeId)
+  return next
+}