Add Policy DSL Validator, Schema Exporter, and Simulation Smoke tools

- Implemented PolicyDslValidator with command-line options for strict mode and JSON output.
- Created PolicySchemaExporter to generate JSON schemas for policy-related models.
- Developed PolicySimulationSmoke tool to validate policy simulations against expected outcomes.
- Added project files and necessary dependencies for each tool.
- Ensured proper error handling and usage instructions across tools.

src/StellaOps.Cryptography/Audit/AuthEventRecord.cs

@@ -43,6 +43,11 @@ public sealed record AuthEventRecord
     /// </summary>
     public AuthEventClient? Client { get; init; }
 
+    /// <summary>
+    /// Tenant identifier associated with the authenticated principal or client.
+    /// </summary>
+    public ClassifiedString Tenant { get; init; } = ClassifiedString.Empty;
+
     /// <summary>
     /// Granted or requested scopes tied to the event.
     /// </summary>

src/StellaOps.Cryptography/StellaOps.Cryptography.csproj

@@ -11,6 +11,6 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Konscious.Security.Cryptography.Argon2" Version="1.3.1" />
-    <PackageReference Include="Microsoft.IdentityModel.Tokens" Version="7.5.1" />
+    <PackageReference Include="Microsoft.IdentityModel.Tokens" Version="8.14.0" />
   </ItemGroup>
 </Project>