update evidence bundle to include new evidence types and implement ProofSpine integration

src/Signals/StellaOps.Signals/Services/UnknownsIngestionService.cs

@@ -78,7 +78,9 @@ internal sealed class UnknownsIngestionService : IUnknownsIngestionService
                 EdgeFrom = entry.EdgeFrom?.Trim(),
                 EdgeTo = entry.EdgeTo?.Trim(),
                 Reason = entry.Reason?.Trim(),
-                CreatedAt = now
+                CreatedAt = now,
+                UpdatedAt = now,
+                LastAnalyzedAt = now
             });
         }