Вытащил солюшен на уровень выше, чтобы прощё было дотнетить

Infrastructure/Common/DateTimeProvider.cs

@@ -0,0 +1,9 @@
+using ApplicationLayer.InfrastructureServicesInterfaces;
+
+namespace Infrastructure.Common;
+
+/// Implements <see cref="IDateTimeProvider"/>
+public class DateTimeProvider : IDateTimeProvider
+{
+    DateTime IDateTimeProvider.Now() => DateTime.Now;
+}

Infrastructure/Common/UserIdProvider.cs

@@ -0,0 +1,18 @@
+using System.Security.Claims;
+using ApplicationLayer.InfrastructureServicesInterfaces;
+using Microsoft.AspNetCore.Http;
+
+namespace Infrastructure.Common;
+
+public class UserIdProvider(IHttpContextAccessor contextAccessor) : IUserIdProvider
+{
+    Guid IUserIdProvider.GetUserId()
+    {
+            var claim = contextAccessor.HttpContext!.User.Claims.SingleOrDefault(claim => claim.Type == ClaimTypes.NameIdentifier);
+            if (claim is null)
+            {
+                throw new InvalidOperationException("UserIdProvider call for request with no authorization");
+            }
+            return Guid.Parse(claim.Value);
+        }
+}