finish secrets finding work and audit remarks work save

src/Scanner/__Libraries/StellaOps.Scanner.Explainability/Assumptions/IAssumptionCollector.cs

@@ -50,6 +50,12 @@ public interface IAssumptionCollector
 public sealed class AssumptionCollector : IAssumptionCollector
 {
     private readonly Dictionary<(AssumptionCategory, string), Assumption> _assumptions = new();
+    private readonly TimeProvider _timeProvider;
+
+    public AssumptionCollector(TimeProvider? timeProvider = null)
+    {
+        _timeProvider = timeProvider ?? TimeProvider.System;
+    }
 
     /// <inheritdoc />
     public void Record(
@@ -107,7 +113,7 @@ public sealed class AssumptionCollector : IAssumptionCollector
         {
             Id = Guid.NewGuid().ToString("N"),
             Assumptions = [.. _assumptions.Values],
-            CreatedAt = DateTimeOffset.UtcNow,
+            CreatedAt = _timeProvider.GetUtcNow(),
             ContextId = contextId
         };
     }