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)

src/Eis.Infrastructure/Candidate/CandidateService.Results.cs

@@ -1,6 +1,7 @@
 using System.Globalization;
 using System.Text.Json.Nodes;
 using Eis.Application.Candidate;
+using Eis.Infrastructure.Authentication;
 using Eis.Infrastructure.Security;
 using QRCoder;
 
@@ -21,6 +22,20 @@ internal sealed partial class CandidateService
 
         var user = context.User!;
         var profile = context.Profile!;
+        var body = await cache.RememberJsonAsync(
+            "results",
+            $"candidate:{Uri.EscapeDataString(user.Id)}",
+            () => LoadResultsAsync(user, profile, verificationBaseUrl, cancellationToken),
+            PositiveInteger(Environment.GetEnvironmentVariable("REDIS_RESULTS_CACHE_TTL_SECONDS"), 86400));
+        return Success(body);
+    }
+
+    private async Task<JsonObject> LoadResultsAsync(
+        AuthenticationUser user,
+        JsonObject profile,
+        string verificationBaseUrl,
+        CancellationToken cancellationToken)
+    {
         var snapshot = await snapshotLoader.LoadAsync(user.Id, cancellationToken, includeCohort: true);
         var registrationById = snapshot.Registrations.ToDictionary(item => item.Id, StringComparer.Ordinal);
         var results = snapshot.Results
@@ -46,7 +61,7 @@ internal sealed partial class CandidateService
             summaries.Add(summary);
         }
 
-        return Success(new JsonObject
+        return new JsonObject
         {
             ["ok"] = true,
             ["results"] = new JsonArray(results),
@@ -56,9 +71,12 @@ internal sealed partial class CandidateService
                 ["name"] = Text(profile, "name").Length > 0 ? Text(profile, "name") : user.DisplayName,
                 ["candidateNumber"] = user.CandidateNumber ?? string.Empty
             }
-        });
+        };
     }
 
+    private static int PositiveInteger(string? value, int fallback) =>
+        int.TryParse(value, out var parsed) && parsed > 0 ? Math.Min(parsed, 86400) : fallback;
+
     public async Task<CandidateEndpointResult> CreateScoreAppealAsync(
         string sessionToken,
         string resultId,