feat(member): 删除成员先同步设备再调接口；新增 clearDeviceMembers 方法

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

miniprogram/lefu/service.ts

@@ -399,6 +399,18 @@ class LeFuService {
         }, 2000)
     }
 
+    // ─── 清除设备成员（不下发） ─────────────────────
+    clearDeviceMembers(): Promise<void> {
+        return new Promise((resolve, reject) => {
+            if (!this._activeProtocol) { reject(new Error('设备未连接')); return }
+            const timer = setTimeout(() => reject(new Error('清除设备成员超时')), 15000)
+            this._activeProtocol.codeClearDeviceData('01', (res: number) => {
+                clearTimeout(timer)
+                res === 0 ? resolve() : reject(new Error('清除设备成员失败'))
+            })
+        })
+    }
+
     // ─── 成员同步 ─────────────────────────────────
     syncMembersToDevice(members: DeviceMember[], onProgress?: (current: number, total: number) => void): Promise<void> {
         return new Promise((resolve, reject) => {