本阶段迁移已完成。

Excel：班级、账号、考生、缴费、考场、成绩、志愿、录取、报到及正式录取名册均改为 ClosedXML 原生处理，支持模板、校验、筛选和导入预检。[SystemWorkbook.cs](C:\\Users\\BI\\Documents\\EIS-dotnet\\src\\Eis.Infrastructure\\Spreadsheets\\SystemWorkbook.cs)
文书：录取通知书模板、成绩单/准考证/通知书业务数据与防伪验真已脱离 Node；保留现有前端排版导出效果。[AdminAdmissionService.Documents.cs](C:\\Users\\BI\\Documents\\EIS-dotnet\\src\\Eis.Infrastructure\\Administration\\AdminAdmissionService.Documents.cs)
缓存：完成 Redis 命名空间版本缓存、有界本地回退、请求合并和并发失效保护；公开数据及成绩写入后立即失效。[ApplicationCache.cs](C:\\Users\\BI\\Documents\\EIS-dotnet\\src\\Eis.Infrastructure\\Caching\\ApplicationCache.cs)
迁移清单已更新为完成。[MIGRATION.md](C:\\Users\\BI\\Documents\\EIS-dotnet\\MIGRATION.md)

scripts/smoke-dotnet-migration.ps1

@@ -1111,6 +1111,37 @@ try {
         $resultExport.RawContentLength -lt 1000) {
         throw 'Native result workbook export is invalid'
     }
+    foreach ($excelResource in @('classes', 'class_admins', 'account_quotas', 'candidates', 'payments', 'centers')) {
+        $excelExport = Invoke-WebRequest -Uri "$nativeAuthBaseUrl/api/admin/excel/$excelResource" -WebSession $nativeSession
+        if ($excelExport.Headers['X-EIS-Implementation'] -ne 'aspnet-core' -or
+            $excelExport.Headers['Content-Type'] -notmatch 'spreadsheetml' -or
+            $excelExport.RawContentLength -lt 1000) {
+            throw "Native '$excelResource' workbook export is invalid"
+        }
+    }
+    $accountResultTemplate = Invoke-WebRequest -Uri "$nativeAuthBaseUrl/api/admin/excel/account_results?template=1" -WebSession $nativeSession
+    if ($accountResultTemplate.Headers['X-EIS-Implementation'] -ne 'aspnet-core' -or
+        $accountResultTemplate.Headers['Content-Type'] -notmatch 'spreadsheetml' -or
+        $accountResultTemplate.RawContentLength -lt 1000) {
+        throw "Native 'account_results' workbook template is invalid"
+    }
+    foreach ($ledgerKind in @('preferences', 'placements')) {
+        $ledgerExport = Invoke-WebRequest -Uri "$nativeAuthBaseUrl/api/admin/admissions/$ledgerKind/export" -WebSession $nativeSession
+        if ($ledgerExport.Headers['X-EIS-Implementation'] -ne 'aspnet-core' -or
+            $ledgerExport.Headers['Content-Type'] -notmatch 'spreadsheetml' -or
+            $ledgerExport.RawContentLength -lt 1000) {
+            throw "Native admission '$ledgerKind' ledger workbook export is invalid"
+        }
+    }
+    $admissionSchoolSession = [Microsoft.PowerShell.Commands.WebRequestSession]::new()
+    $admissionSchoolLoginBody = @{ username = 'admission_1_admin'; password = '12345678' } | ConvertTo-Json -Compress
+    Invoke-RestMethod -Uri "$nativeAuthBaseUrl/api/auth/login" -Method Post -ContentType 'application/json' -Body $admissionSchoolLoginBody -WebSession $admissionSchoolSession | Out-Null
+    foreach ($admissionSchoolRoute in @('notice-template', 'reporting', 'placements')) {
+        $admissionSchoolResponse = Invoke-WebRequest -Uri "$nativeAuthBaseUrl/api/admission/$admissionSchoolRoute" -WebSession $admissionSchoolSession
+        if ($admissionSchoolResponse.Headers['X-EIS-Implementation'] -ne 'aspnet-core') {
+            throw "Native admission-school route '$admissionSchoolRoute' did not use ASP.NET Core"
+        }
+    }
     $legacyResultsAfterWrites = Invoke-WebRequest -Uri "$legacyBaseUrl$resultsUri" -WebSession $session
     $nativeResultsAfterWrites = Invoke-WebRequest -Uri "$nativeAuthBaseUrl$resultsUri" -WebSession $nativeSession
     Assert-JsonEquivalent -Expected $legacyResultsAfterWrites.Content -Actual $nativeResultsAfterWrites.Content -Label 'Result writes follow-up'