docs consolidation and others

src/AdvisoryAI/__Tests/StellaOps.AdvisoryAI.Tests/SignedModelBundleManagerTests.cs

@@ -36,7 +36,9 @@ public class SignedModelBundleManagerTests
 
             var envelopePath = Path.Combine(tempRoot, "signature.dsse");
             var envelopeJson = await File.ReadAllTextAsync(envelopePath, CancellationToken.None);
-            var envelope = JsonSerializer.Deserialize<ModelBundleSignatureEnvelope>(envelopeJson);
+            var envelope = JsonSerializer.Deserialize<ModelBundleSignatureEnvelope>(
+                envelopeJson,
+                new JsonSerializerOptions { PropertyNamingPolicy = JsonNamingPolicy.SnakeCaseLower });
             Assert.NotNull(envelope);
 
             var payloadJson = Encoding.UTF8.GetString(Convert.FromBase64String(envelope!.Payload));