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

src/Scanner/__Libraries/StellaOps.Scanner.Evidence/FuncProofBuilder.cs

@@ -299,6 +299,15 @@ public sealed class FuncProofBuilder
         var hash = SHA256.HashData(data);
         return Convert.ToHexString(hash).ToLowerInvariant();
     }
+
+    /// <summary>
+    /// Computes a BLAKE3-style hash for section content.
+    /// Uses ICryptoHash for regional compliance if set, otherwise uses SHA-256 as fallback.
+    /// </summary>
+    private string ComputeBlake3Hash(byte[] content)
+    {
+        return ComputeHashForGraph(content, _cryptoHash);
+    }
 }
 
 /// <summary>