本批迁移已完成：

原生化后台只读接口：GET /api/admin/candidates
GET /api/admin/registrations
GET /api/admin/payments

保持超级、校级、班级管理员的数据范围一致。
保持证件号脱敏、审批流、考试科目、缴费信息及座位号前导零兼容。
新增灰度开关：ADMIN_NATIVE_OPERATIONAL_READS_ENABLED=true
归档、审核、缴费更新等写操作暂时继续转发 Node。

tests/Eis.Infrastructure.Tests/Administration/AdminMigrationOptionsTests.cs

@@ -166,6 +166,21 @@ public sealed class AdminMigrationOptionsTests
         }, centersEnabled: "true");
     }
 
+    [Fact]
+    public void EnablesOperationalReadsWithBaseReadsAndSharedSessions()
+    {
+        WithEnvironment("true", null, null, () =>
+        {
+            var options = AdminMigrationOptions.FromEnvironment(
+                configuredNativeReadsEnabled: false,
+                authenticationNativeEnabled: true,
+                sharesLegacySessions: true);
+
+            Assert.True(options.NativeReadsEnabled);
+            Assert.True(options.NativeOperationalReadsEnabled);
+        }, operationalReadsEnabled: "true");
+    }
+
     private static void WithEnvironment(
         string? nativeReadsEnabled,
         string? nativeOrganizationWritesEnabled,
@@ -175,7 +190,8 @@ public sealed class AdminMigrationOptionsTests
         string? configurationEnabled = null,
         string? noticeManagementEnabled = null,
         string? legacyNoticeWritesEnabled = null,
-        string? centersEnabled = null)
+        string? centersEnabled = null,
+        string? operationalReadsEnabled = null)
     {
         var previousNativeReadsEnabled = Environment.GetEnvironmentVariable("ADMIN_NATIVE_READS_ENABLED");
         var previousNativeOrganizationWritesEnabled = Environment.GetEnvironmentVariable("ADMIN_NATIVE_ORGANIZATION_WRITES_ENABLED");
@@ -184,6 +200,7 @@ public sealed class AdminMigrationOptionsTests
         var previousNoticeManagementEnabled = Environment.GetEnvironmentVariable("ADMIN_NATIVE_NOTICE_MANAGEMENT_ENABLED");
         var previousLegacyNoticeWritesEnabled = Environment.GetEnvironmentVariable("ADMIN_NATIVE_NOTICE_WRITES_ENABLED");
         var previousCentersEnabled = Environment.GetEnvironmentVariable("ADMIN_NATIVE_CENTERS_ENABLED");
+        var previousOperationalReadsEnabled = Environment.GetEnvironmentVariable("ADMIN_NATIVE_OPERATIONAL_READS_ENABLED");
         var previousAllowMemory = Environment.GetEnvironmentVariable("ADMIN_NATIVE_ALLOW_MEMORY");
         try
         {
@@ -194,6 +211,7 @@ public sealed class AdminMigrationOptionsTests
             Environment.SetEnvironmentVariable("ADMIN_NATIVE_NOTICE_MANAGEMENT_ENABLED", noticeManagementEnabled);
             Environment.SetEnvironmentVariable("ADMIN_NATIVE_NOTICE_WRITES_ENABLED", legacyNoticeWritesEnabled);
             Environment.SetEnvironmentVariable("ADMIN_NATIVE_CENTERS_ENABLED", centersEnabled);
+            Environment.SetEnvironmentVariable("ADMIN_NATIVE_OPERATIONAL_READS_ENABLED", operationalReadsEnabled);
             Environment.SetEnvironmentVariable("ADMIN_NATIVE_ALLOW_MEMORY", allowMemory);
             test();
         }
@@ -206,6 +224,7 @@ public sealed class AdminMigrationOptionsTests
             Environment.SetEnvironmentVariable("ADMIN_NATIVE_NOTICE_MANAGEMENT_ENABLED", previousNoticeManagementEnabled);
             Environment.SetEnvironmentVariable("ADMIN_NATIVE_NOTICE_WRITES_ENABLED", previousLegacyNoticeWritesEnabled);
             Environment.SetEnvironmentVariable("ADMIN_NATIVE_CENTERS_ENABLED", previousCentersEnabled);
+            Environment.SetEnvironmentVariable("ADMIN_NATIVE_OPERATIONAL_READS_ENABLED", previousOperationalReadsEnabled);
             Environment.SetEnvironmentVariable("ADMIN_NATIVE_ALLOW_MEMORY", previousAllowMemory);
         }
     }