feat(miniprogram): BLE 增强层 — DataBuffer + GenericBleAdapter + DataSyncScheduler

- DataBuffer: 离线持久化缓冲（分桶存储 + 去重 + 容量管理）
- GenericBleAdapter: 基于 Bluetooth SIG 标准 Health Profile 的通用适配器
  (Heart Rate 0x180D / Health Thermometer 0x1809 / Blood Pressure 0x1810)
- DataSyncScheduler: 定时自动同步调度（基于时间间隔判断是否需要同步）
- BLEManager: 集成 DataBuffer 替换简单 Storage 缓存
- device-sync 页面: 注册 CustomBandAdapter + 自动同步 + 状态显示
- 新增 vitest 单元测试配置，30 个测试全部通过

apps/miniprogram/src/pages/device-sync/index.tsx

@@ -1,10 +1,12 @@
-import { useState, useCallback } from 'react';
+import { useState, useCallback, useMemo } from 'react';
 import { View, Text } from '@tarojs/components';
 import Taro, { useDidShow, useRouter } from '@tarojs/taro';
 import { BLEManager } from '@/services/ble/BLEManager';
 import { XiaomiBandAdapter } from '@/services/ble/adapters/XiaomiBandAdapter';
 import { BloodPressureAdapter } from '@/services/ble/adapters/BloodPressureAdapter';
 import { GlucoseMeterAdapter } from '@/services/ble/adapters/GlucoseMeterAdapter';
+import { CustomBandAdapter } from '@/services/ble/adapters/GenericBleAdapter';
+import { DataSyncScheduler } from '@/services/ble/DataSyncScheduler';
 import { uploadReadings } from '@/services/device-sync';
 import { useAuthStore } from '@/stores/auth';
 import type { BLEDevice, NormalizedReading } from '@/services/ble/types';
@@ -14,6 +16,7 @@ const bleManager = new BLEManager({ scanTimeout: 10000, retryCount: 3 });
 bleManager.registerAdapter(XiaomiBandAdapter);
 bleManager.registerAdapter(BloodPressureAdapter);
 bleManager.registerAdapter(GlucoseMeterAdapter);
+bleManager.registerAdapter(CustomBandAdapter);
 
 type PageState = 'idle' | 'scanning' | 'connecting' | 'connected' | 'syncing' | 'done' | 'error';
 
@@ -27,6 +30,12 @@ export default function DeviceSync() {
   const [liveReadings, setLiveReadings] = useState<NormalizedReading[]>([]);
   const [syncCount, setSyncCount] = useState(0);
   const [errorMsg, setErrorMsg] = useState('');
+  const [lastSyncAt, setLastSyncAt] = useState<number | null>(null);
+  const [pendingCount, setPendingCount] = useState(0);
+
+  const scheduler = useMemo(() => new DataSyncScheduler({
+    intervalMs: 60 * 60 * 1000,
+  }), []);
 
   useDidShow(() => {
     bleManager.setOnConnectionChange(() => {});
@@ -34,7 +43,29 @@ export default function DeviceSync() {
       setLiveReadings((prev) => [...prev, ...readings]);
     });
 
+    // 显示上次同步时间
+    setLastSyncAt(scheduler.getLastSyncAt());
+
+    // 检查是否有未上传的缓冲数据
+    const buffer = (bleManager as any).dataBuffer;
+    if (buffer) {
+      setPendingCount(buffer.size());
+    }
+
+    // 自动同步：超过间隔时尝试上传缓冲数据
+    if (currentPatient && scheduler.needsSync()) {
+      scheduler.tryAutoSync(async () => {
+        const count = await bleManager.flushPendingReadings(async (readings) => {
+          return uploadReadings(currentPatient.id, 'buffered', undefined, readings);
+        });
+        setLastSyncAt(Date.now());
+        setPendingCount(0);
+        return { success: count > 0, uploadedCount: count };
+      });
+    }
+
     return () => {
+      scheduler.destroy();
       bleManager.destroy();
     };
   });
@@ -87,6 +118,7 @@ export default function DeviceSync() {
 
       if (result.success) {
         setSyncCount(result.uploadedCount);
+        setLastSyncAt(Date.now());
         setPageState('done');
 
         // 如果从体征录入页跳转而来，将最新读数写入 storage 供回填
@@ -136,6 +168,21 @@ export default function DeviceSync() {
         <Text className="sync-hero-desc">连接智能手环、血压计、血糖仪，自动采集健康数据</Text>
       </View>
 
+      {(lastSyncAt || pendingCount > 0) && (
+        <View className="sync-status-info">
+          {lastSyncAt && (
+            <Text className="sync-status-time">
+              上次同步: {new Date(lastSyncAt).toLocaleTimeString()}
+            </Text>
+          )}
+          {pendingCount > 0 && (
+            <Text className="sync-status-pending">
+              {pendingCount} 条数据待上传
+            </Text>
+          )}
+        </View>
+      )}
+
       <View className="sync-action" onClick={handleScan}>
         <Text className="sync-action-text">扫描设备</Text>
       </View>