audit notes work completed, test fixes work (95% done), new sprints, new data sources setup and configuration

src/Signals/__Tests/StellaOps.Signals.Tests/UnknownsDecayServiceTests.cs

@@ -531,6 +531,11 @@ public class UnknownsDecayServiceTests
     {
         private readonly Dictionary<string, GraphMetrics> _metrics = new();
 
+        public InMemoryGraphMetricsRepository(TimeProvider timeProvider)
+        {
+            // TimeProvider not used in this test implementation
+        }
+
         public void SetMetrics(string symbolId, string callgraphId, GraphMetrics metrics)
         {
             _metrics[$"{symbolId}:{callgraphId}"] = metrics;