feat: 后端架构重构 — Endpoint→Service→Repository分层 + AI确认机制 + 异步任务持久化

- 核心业务拆分为 Endpoint → Application Service → Repository 三层
- AI写入操作必须用户确认后才写库(确认卡片机制)
- 报告/饮食/用药分析改为持久化任务队列(原子领取/重试/重启恢复)
- 运动计划修复: 连续真实日期替代周模板
- 用药提醒去重 + 通知Outbox预留
- 认证收拢到AuthService, 管理员收拢到AdminService
- AI会话加用户归属校验防串号
- 提示词调整为患者视角
- 开发假数据已关闭
- 21/21测试通过, 0警告0错误

backend/src/Health.Application/Reports/ReportService.cs

@@ -0,0 +1,122 @@
+using Health.Domain.Entities;
+using Health.Domain.Enums;
+
+namespace Health.Application.Reports;
+
+public sealed class ReportService(
+    IReportRepository reports,
+    IReportFileStorage fileStorage,
+    IReportAnalysisQueue queue) : IReportService
+{
+    private const long MaxReportImageBytes = 10 * 1024 * 1024;
+    private static readonly HashSet<string> AllowedExtensions = new(StringComparer.OrdinalIgnoreCase)
+    {
+        ".jpg", ".jpeg", ".png", ".webp"
+    };
+
+    private readonly IReportRepository _reports = reports;
+    private readonly IReportFileStorage _fileStorage = fileStorage;
+    private readonly IReportAnalysisQueue _queue = queue;
+
+    public async Task<IReadOnlyList<ReportDto>> GetReportsAsync(Guid userId, CancellationToken ct)
+    {
+        var result = await _reports.ListAsync(userId, ct);
+        return result.Select(ToDto).ToList();
+    }
+
+    public async Task<ReportDto?> GetReportAsync(Guid userId, Guid reportId, CancellationToken ct)
+    {
+        var report = await _reports.GetOwnedAsync(userId, reportId, ct);
+        return report == null ? null : ToDto(report);
+    }
+
+    public async Task<ReportUploadResult> UploadReportAsync(Guid userId, ReportUploadFile file, CancellationToken ct)
+    {
+        if (file.Length <= 0)
+            return Fail(400, "未上传文件");
+
+        if (file.Length > MaxReportImageBytes)
+            return Fail(400, "报告图片不能超过 10MB，请压缩后重新上传");
+
+        var ext = Path.GetExtension(file.FileName).ToLowerInvariant();
+        if (!AllowedExtensions.Contains(ext))
+            return Fail(400, "目前仅支持上传 JPG、PNG、WEBP 格式的报告图片");
+
+        var storedFile = await _fileStorage.SaveAsync(file, ext, ct);
+        var report = new Report
+        {
+            Id = Guid.NewGuid(),
+            UserId = userId,
+            FileUrl = storedFile.FileUrl,
+            FileType = ReportFileType.Image,
+            Category = ReportCategory.Other,
+            Status = ReportStatus.Analyzing,
+            AiSummary = null,
+            AiIndicators = null,
+            CreatedAt = DateTime.UtcNow,
+        };
+
+        await _reports.AddAsync(report, ct);
+        await _queue.EnqueueAsync(new ReportAnalysisJob(Guid.NewGuid(), report.Id, storedFile.FilePath), ct);
+
+        return new ReportUploadResult(true, 0, "报告已上传，AI 正在分析中", ToDto(report));
+    }
+
+    public async Task<bool> DeleteReportAsync(Guid userId, Guid reportId, CancellationToken ct)
+    {
+        var report = await _reports.GetOwnedAsync(userId, reportId, ct);
+        if (report == null) return false;
+
+        var filePath = _fileStorage.GetLocalFilePath(report.FileUrl);
+        if (_fileStorage.Exists(filePath))
+            _fileStorage.Delete(filePath);
+
+        _reports.Delete(report);
+        await _reports.SaveChangesAsync(ct);
+        return true;
+    }
+
+    public async Task<bool> ReanalyzeReportAsync(Guid userId, Guid reportId, CancellationToken ct)
+    {
+        var report = await _reports.GetOwnedAsync(userId, reportId, ct);
+        if (report == null) return false;
+
+        var filePath = _fileStorage.GetLocalFilePath(report.FileUrl);
+        if (!_fileStorage.Exists(filePath)) return false;
+
+        report.Status = ReportStatus.Analyzing;
+        report.AiSummary = null;
+        report.AiIndicators = null;
+        await _queue.EnqueueAsync(new ReportAnalysisJob(Guid.NewGuid(), report.Id, filePath), ct);
+        return true;
+    }
+
+    public static ReportDto ToDto(Report report) => new(
+        report.Id,
+        report.UserId,
+        report.FileUrl,
+        report.FileType.ToString(),
+        report.Category.ToString(),
+        report.Status.ToString(),
+        ToAiStatus(report),
+        report.Status == ReportStatus.DoctorReviewed ? "Reviewed" : "Pending",
+        report.Severity,
+        report.AiSummary,
+        report.AiIndicators,
+        report.DoctorComment,
+        report.DoctorRecommendation,
+        report.DoctorName,
+        report.ReviewedAt,
+        report.CreatedAt);
+
+    private static string ToAiStatus(Report report) => report.Status switch
+    {
+        ReportStatus.Analyzing => "Analyzing",
+        ReportStatus.AnalysisFailed => "Failed",
+        _ when string.IsNullOrWhiteSpace(report.AiSummary) => "Analyzing",
+        _ => "Succeeded"
+    };
+
+    private static ReportUploadResult Fail(int code, string message) =>
+        new(false, code, message, null);
+}