stabilizaiton work - projects rework for maintenanceability and ui livening

src/__Libraries/StellaOps.HybridLogicalClock.Tests/HlcTimestampTests.Format.cs

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+// <copyright file="HlcTimestampTests.Format.cs" company="StellaOps">
+// Copyright (c) StellaOps. Licensed under BUSL-1.1.
+// </copyright>
+using FluentAssertions;
+using Xunit;
+
+namespace StellaOps.HybridLogicalClock.Tests;
+
+public sealed partial class HlcTimestampTests
+{
+    [Fact]
+    public void ToSortableString_FormatsCorrectly()
+    {
+        var timestamp = CreateTimestamp(1704067200000, "scheduler-east-1", 42);
+
+        var result = timestamp.ToSortableString();
+
+        result.Should().Be("1704067200000-scheduler-east-1-000042");
+    }
+
+    [Fact]
+    public void ToString_ReturnsSortableString()
+    {
+        var timestamp = CreateTimestamp(1704067200000, "node1", 42);
+
+        var result = timestamp.ToString();
+
+        result.Should().Be(timestamp.ToSortableString());
+    }
+}