feat: 应用内通知系统 + 结构化手术史/用药等相关改动

- 新增用户通知 outbox 流水线(EfUserNotificationPipeline)与后台投递 worker
- 通知中心页面及前端通知服务接入
- 健康指标异常、用药/运动提醒等事件统一产出站内通知
- 健康档案结构化手术史、用药提醒扫描、医生/用户端点等配套调整
- AppDbContext 注册通知相关实体

backend/src/Health.Application/HealthArchives/HealthArchiveContracts.cs

@@ -2,12 +2,22 @@ using Health.Domain.Entities;
 
 namespace Health.Application.HealthArchives;
 
+public sealed record HealthArchiveSurgeryDto(
+    Guid Id,
+    string Type,
+    DateOnly? Date);
+
+public sealed record HealthArchiveSurgeryInput(
+    string Type,
+    DateOnly? Date);
+
 public sealed record HealthArchiveDto(
     Guid Id,
     Guid UserId,
     string? Diagnosis,
     string? SurgeryType,
     DateOnly? SurgeryDate,
+    IReadOnlyList<HealthArchiveSurgeryDto> Surgeries,
     IReadOnlyList<string> Allergies,
     IReadOnlyList<string> DietRestrictions,
     IReadOnlyList<string> ChronicDiseases,
@@ -21,7 +31,8 @@ public sealed record HealthArchiveUpdateRequest(
     IReadOnlyList<string>? Allergies,
     IReadOnlyList<string>? DietRestrictions,
     IReadOnlyList<string>? ChronicDiseases,
-    string? FamilyHistory);
+    string? FamilyHistory,
+    IReadOnlyList<HealthArchiveSurgeryInput>? Surgeries = null);
 
 public interface IHealthArchiveService
 {