Log heuristic fallback primes

PerfectNumbers.Core/PrimeOrderCalculator.Wide.cs

@@ -79,6 +79,7 @@ internal static partial class PrimeOrderCalculator
         PartialFactorResult128 phiFactors = PartialFactorWide(phi, config);
         if (phiFactors.Factors is null)
         {
+            HeuristicFailureLog.Record(prime, null, HeuristicFailureReason.PhiPartialFactorizationFailed);
             return FinishStrictlyWide(prime, divisorData, config.Mode);
         }
 
@@ -108,6 +109,7 @@ internal static partial class PrimeOrderCalculator
 
         if (config.Mode == PrimeOrderMode.Strict)
         {
+            HeuristicFailureLog.Record(prime, candidateOrder, HeuristicFailureReason.StrictModeRequested);
             return FinishStrictlyWide(prime, divisorData, PrimeOrderMode.Strict);
         }
 
@@ -116,6 +118,7 @@ internal static partial class PrimeOrderCalculator
             return new PrimeOrderResultWide(PrimeOrderStatus.Found, order);
         }
 
+        HeuristicFailureLog.Record(prime, candidateOrder, HeuristicFailureReason.HeuristicPipelineUnresolved);
         return FinishStrictlyWide(prime, divisorData, config.Mode);
     }