prep docs and service updates

src/Signals/StellaOps.Signals/Models/CallgraphNode.cs

@@ -1,12 +1,21 @@
-namespace StellaOps.Signals.Models;
+using System.Collections.Generic;
+
+namespace StellaOps.Signals.Models;
 
 /// <summary>
 /// Normalized callgraph node.
 /// </summary>
-public sealed record CallgraphNode(
-    string Id,
-    string Name,
-    string Kind,
-    string? Namespace,
-    string? File,
-    int? Line);
+public sealed record CallgraphNode(
+    string Id,
+    string Name,
+    string Kind,
+    string? Namespace,
+    string? File,
+    int? Line,
+    string? Purl = null,
+    string? SymbolDigest = null,
+    string? BuildId = null,
+    string? Language = null,
+    IReadOnlyList<string>? Evidence = null,
+    IReadOnlyDictionary<string, string?>? Analyzer = null,
+    string? CodeId = null);