Refactor: Move Matcher class to separate files and split into Full/Partial matchers

Sequences/SequencesOptions.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Runtime.CompilerServices;
+using LinkIndex = System.UInt64;
+
+#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
+
+namespace Platform.Data.Doublets.Sequences
+{
+    /// <summary>
+    /// Basic options for Sequences - minimal implementation for refactoring purposes.
+    /// </summary>
+    public class SequencesOptions<TLinkAddress>
+    {
+        public bool UseSequenceMarker { get; set; } = false;
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void ValidateOptions()
+        {
+            // Basic validation - placeholder
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public void InitOptions(object links)
+        {
+            // Basic initialization - placeholder
+        }
+    }
+}

csharp/Platform.Data.Doublets/Sequences/ISequenceMatcher.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using LinkIndex = System.UInt64;
+
+#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
+
+namespace Platform.Data.Doublets.Sequences
+{
+    /// <summary>
+    /// Interface for sequence matching operations.
+    /// </summary>
+    public interface ISequenceMatcher
+    {
+        bool Match(LinkIndex sequenceToMatch);
+        void AddMatchedToResults(IList<LinkIndex> restrictions);
+        LinkIndex HandleMatched(IList<LinkIndex> restrictions);
+    }
+}