feat(mp): BLE 血氧仪支持 + 服务发现增强

- 新增 Pulse Oximeter Service (0x1822) 支持，含 SFLOAT 解析
- 连接后自动扫描全部服务，发现并订阅已知健康 UUID
- 设备同步页展示已发现的服务和可用数据类型标签
- 新增 BLEDiscoveredService / BLEDiscoveredCharacteristic 类型

apps/miniprogram/src/pages/pkg-health/device-sync/index.scss

@@ -927,3 +927,62 @@
   font-size: var(--tk-font-body-lg);
   color: $tx2;
 }
+
+// ─── 服务发现信息 ───
+.ds-services-info {
+  margin-bottom: var(--tk-gap-md) !important;
+}
+
+.ds-services-info__title {
+  display: block;
+  font-size: var(--tk-font-body-sm);
+  font-weight: 600;
+  color: $tx;
+  margin-bottom: var(--tk-gap-sm);
+}
+
+.ds-services-info__caps {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+}
+
+.ds-cap-tag {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  padding: 4px 10px;
+  border-radius: $r-xs;
+  font-size: var(--tk-font-cap);
+
+  &--on {
+    background: rgba($acc, 0.08);
+    color: $acc;
+  }
+
+  &--off {
+    background: $surface-alt;
+    color: $tx3;
+  }
+}
+
+.ds-cap-tag__dot {
+  font-size: 10px;
+}
+
+.ds-cap-tag__text {
+  font-size: var(--tk-font-cap);
+}
+
+.ds-services-info__hint {
+  margin-top: var(--tk-gap-sm);
+  background: $wrn-l;
+  border-radius: $r-xs;
+  padding: 8px 12px;
+}
+
+.ds-services-info__hint-text {
+  font-size: var(--tk-font-cap);
+  color: $wrn;
+  line-height: 1.5;
+}

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

@@ -10,7 +10,7 @@ import { CustomBandAdapter, HuaweiBandAdapter, FallbackAdapter } from '@/service
 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';
+import type { BLEDevice, NormalizedReading, BLEDiscoveredService } from '@/services/ble/types';
 import { useElderClass } from '@/hooks/useElderClass';
 import PageShell from '@/components/ui/PageShell';
 import ContentCard from '@/components/ui/ContentCard';
@@ -80,6 +80,7 @@ export default function DeviceSync() {
   const [errorMsg, setErrorMsg] = useState('');
   const [lastSyncAt, setLastSyncAt] = useState<number | null>(null);
   const [pendingCount, setPendingCount] = useState(0);
+  const [discoveredServices, setDiscoveredServices] = useState<BLEDiscoveredService[]>([]);
 
   const scheduler = useMemo(() => new DataSyncScheduler({ intervalMs: 60 * 60 * 1000 }), []);
 
@@ -163,6 +164,8 @@ export default function DeviceSync() {
     setErrorMsg('');
     try {
       await getBleManager().connect(device);
+      const conn = getBleManager().getConnection();
+      setDiscoveredServices(conn?.discoveredServices ?? []);
       setPageState('connected');
     } catch (e: unknown) {
       setErrorMsg(e instanceof Error ? e.message : '连接失败');
@@ -217,6 +220,7 @@ export default function DeviceSync() {
     setLiveReadings([]);
     setSyncCount(0);
     setErrorMsg('');
+    setDiscoveredServices([]);
   }, []);
 
   const latestReading = liveReadings.length > 0 ? liveReadings[liveReadings.length - 1] : null;
@@ -359,6 +363,54 @@ export default function DeviceSync() {
     </View>
   );
 
+  /** 渲染 BLE 服务发现信息 */
+  const renderServiceDiscovery = () => {
+    if (discoveredServices.length === 0) return null;
+
+    // 检查各类健康数据是否在已发现的 UUID 中可用
+    const hasCharShort = (short: string) =>
+      discoveredServices.some((s) =>
+        s.characteristics.some((c) =>
+          c.uuid.toUpperCase().replace(/-/g, '').slice(-4) === short,
+        ),
+      );
+
+    const capabilities = [
+      { key: '2A37', label: '心率', available: hasCharShort('2A37') },
+      { key: '2A5F', label: '血氧(实时)', available: hasCharShort('2A5F') },
+      { key: '2A5E', label: '血氧(单次)', available: hasCharShort('2A5E') },
+      { key: '2A1C', label: '体温', available: hasCharShort('2A1C') },
+      { key: '2A35', label: '血压', available: hasCharShort('2A35') },
+    ];
+
+    const availableCount = capabilities.filter((c) => c.available).length;
+
+    return (
+      <ContentCard variant="outlined" padding="md" margin="none" className="ds-services-info">
+        <Text className="ds-services-info__title">
+          设备服务 ({discoveredServices.length} 个服务, {availableCount} 种可用数据)
+        </Text>
+        <View className="ds-services-info__caps">
+          {capabilities.map((cap) => (
+            <View key={cap.key} className={`ds-cap-tag ${cap.available ? 'ds-cap-tag--on' : 'ds-cap-tag--off'}`}>
+              <Text className="ds-cap-tag__dot">{cap.available ? '●' : '○'}</Text>
+              <Text className="ds-cap-tag__text">{cap.label}</Text>
+            </View>
+          ))}
+        </View>
+        {availableCount <= 1 && (
+          <View className="ds-services-info__hint">
+            <Text className="ds-services-info__hint-text">
+              {selectedDevice?.name?.includes('HUAWEI') || selectedDevice?.name?.includes('HW')
+                ? '华为手环的睡眠/步数/压力数据使用私有协议，需要华为运动健康 App 同步'
+                : '此设备仅暴露少量标准健康服务，更多数据请使用设备官方 App 同步'}
+            </Text>
+          </View>
+        )}
+      </ContentCard>
+    );
+  };
+
   const renderLatestReading = () => {
     if (!latestReading) return null;
     return (
@@ -525,6 +577,7 @@ export default function DeviceSync() {
       {pageState === 'connected' && (
         <View className="ds-body">
           {renderConnectedStatus()}
+          {renderServiceDiscovery()}
           {renderLatestReading()}
           {renderReadingsHistory()}
           {renderConnectedActions()}