Extract UTF-8 CLI parser helper

PerfectNumbers.Core/MersenneNumberTester.cs

@@ -19,19 +19,17 @@ public sealed class MersenneNumberTester(
     bool useIncremental = true,
     bool useOrderCache = false,
     GpuKernelType kernelType = GpuKernelType.Incremental,
-    bool useModuloWorkaround = false,
     bool useOrder = false,
     bool useGpuLucas = true,
     bool useGpuScan = true,
     bool useGpuOrder = true,
-        bool useResidue = true,
+    bool useResidue = true,
     ulong maxK = 5_000_000UL)
 {
     private readonly bool _useResidue = useResidue;
     private readonly bool _useIncremental = useIncremental && !useResidue;
         private readonly ulong _maxK = maxK;
 	private readonly GpuKernelType _kernelType = kernelType;
-    private readonly bool _useModuloWorkaround = useModuloWorkaround;
     private readonly bool _useGpuLucas = useGpuLucas;
     private readonly bool _useGpuScan = useGpuScan;     // device for pow2mod/incremental scanning
     private readonly bool _useGpuOrder = useGpuOrder;   // device for order computations

PerfectNumbers.Core/ThreadStaticPools.cs

@@ -77,6 +77,18 @@ namespace PerfectNumbers.Core
             }
         }
 
+        [ThreadStatic]
+        private static ArrayPool<byte>? _bytePool;
+
+        public static ArrayPool<byte> BytePool
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get
+            {
+                return _bytePool ??= ArrayPool<byte>.Create();
+            }
+        }
+
         [ThreadStatic]
         private static ArrayPool<int>? _intPool;