stabilizaiton work - projects rework for maintenanceability and ui livening

src/__Libraries/StellaOps.ReachGraph.Persistence/ReplayDivergence.cs

@@ -0,0 +1,12 @@
+// Licensed to StellaOps under the BUSL-1.1 license.
+namespace StellaOps.ReachGraph.Persistence;
+
+/// <summary>
+/// Describes divergence when replay doesn't match.
+/// </summary>
+public sealed record ReplayDivergence
+{
+    public required int NodesAdded { get; init; }
+    public required int NodesRemoved { get; init; }
+    public required int EdgesChanged { get; init; }
+}