本轮完成“考点与考场变更审批”原生迁移：

GET/POST/PATCH /api/admin/centers
PATCH /api/admin/center-change-requests/{id}
校级数据范围、班级管理员禁用
省市区县及结构化考场校验
正式档案和待审申请代码去重
多级工作流分配、通过与拒绝
终审时原子更新流程、审计、考点及考场
新增开关 ADMIN_NATIVE_CENTERS_ENABLED=false

src/Eis.Web/Program.cs

@@ -49,7 +49,8 @@ var adminMigrationOptions = AdminMigrationOptions.FromEnvironment(
     builder.Configuration.GetValue<bool>("AdminMigration:NativeOrganizationWritesEnabled"),
     builder.Configuration.GetValue<bool>("AdminMigration:NativeAccountBatchesEnabled"),
     builder.Configuration.GetValue<bool>("AdminMigration:NativeConfigurationEnabled"),
-    builder.Configuration.GetValue<bool>("AdminMigration:NativeNoticeManagementEnabled"));
+    builder.Configuration.GetValue<bool>("AdminMigration:NativeNoticeManagementEnabled"),
+    builder.Configuration.GetValue<bool>("AdminMigration:NativeCentersEnabled"));
 builder.Services.AddEisInfrastructure(
     DatabaseOptions.FromEnvironment(applicationRoot, builder.Environment.IsProduction()),
     DocumentVerificationOptions.FromEnvironment(builder.Environment.IsProduction()),
@@ -108,6 +109,7 @@ app.MapGet("/health/migration", async (LegacyApiProxy proxy, CancellationToken c
             nativeAccountBatchesEnabled = adminMigrationOptions.NativeAccountBatchesEnabled,
             nativeConfigurationEnabled = adminMigrationOptions.NativeConfigurationEnabled,
             nativeNoticeManagementEnabled = adminMigrationOptions.NativeNoticeManagementEnabled,
+            nativeCentersEnabled = adminMigrationOptions.NativeCentersEnabled,
             nativeRoutes = (adminMigrationOptions.NativeReadsEnabled
                     ? new[] { "GET context", "GET dashboard", "GET schools", "GET school-organization", "GET admins", "GET exams" }
                     : [])
@@ -127,6 +129,9 @@ app.MapGet("/health/migration", async (LegacyApiProxy proxy, CancellationToken c
                 .Concat(adminMigrationOptions.NativeNoticeManagementEnabled
                     ? new[] { "GET/POST/PATCH notices", "PATCH system publications" }
                     : [])
+                .Concat(adminMigrationOptions.NativeCentersEnabled
+                    ? new[] { "GET/POST/PATCH centers", "PATCH center-change-requests" }
+                    : [])
                 .ToArray()
         },
         features = MigrationFeatureCatalog.Current(authenticationOptions.NativeEnabled, candidateMigrationOptions.NativeEnabled)