feat:人脸机器实时增量更新

lib/common/api/user_api.dart

@@ -75,6 +75,22 @@ abstract class UserApi {
         .toList();
   }
 
+  /// 按固定主键上界游标读取本部门及子部门的 V3 人脸权威快照。
+  static Future<ServiceFaceSyncSnapshot> getFaceSyncSnapshot(
+    Map<String, dynamic> requestBody,
+  ) async {
+    final res = await HttpManage().dio.post(
+          "/admin/user-face/ad/v3/sync-snapshot",
+          data: requestBody,
+        );
+    if (res.data is! Map) {
+      throw const FormatException('服务端未返回有效的人脸快照');
+    }
+    return ServiceFaceSyncSnapshot.fromJson(
+      Map<String, dynamic>.from(res.data as Map),
+    );
+  }
+
   /// 获取租户列表
   static Future<List<ServiceTenant>?> getTenantList() async {
     final res = await HttpManage().dio.get("/admin/tenant/list");