Fix build and code structure improvements. New but essential UI functionality. CI improvements. Documentation improvements. AI module improvements.

src/__Libraries/StellaOps.Cryptography/EcdsaSigner.cs

@@ -6,7 +6,7 @@ using Microsoft.IdentityModel.Tokens;
 
 namespace StellaOps.Cryptography;
 
-internal sealed class EcdsaSigner : ICryptoSigner
+public sealed class EcdsaSigner : ICryptoSigner
 {
     private static readonly string[] DefaultKeyOps = { "sign", "verify" };
     private readonly CryptoSigningKey signingKey;