save audit remarks applications progress

src/Scanner/StellaOps.Scanner.WebService/Endpoints/SmartDiffEndpoints.cs

@@ -270,6 +270,7 @@ internal static class SmartDiffEndpoints
         string candidateId,
         ReviewRequest request,
         IVexCandidateStore store,
+        TimeProvider timeProvider,
         HttpContext httpContext,
         CancellationToken ct = default)
     {
@@ -282,7 +283,7 @@ internal static class SmartDiffEndpoints
         var review = new VexCandidateReview(
             Action: action,
             Reviewer: reviewer,
-            ReviewedAt: DateTimeOffset.UtcNow,
+            ReviewedAt: timeProvider.GetUtcNow(),
             Comment: request.Comment);
 
         var success = await store.ReviewCandidateAsync(candidateId, review, ct);