Update dotnet example

[andreloureiro88]

Updated example project

[Copilot]

Pull Request Overview

Updates the CastleDemo project from .NET 6.0 to .NET 9.0 and modernizes the application architecture by migrating from the Startup.cs pattern to the minimal hosting model. The changes also update Castle SDK configuration and implement proper test token usage.

• Migrated from .NET 6.0 to .NET 9.0 framework
• Replaced Startup.cs with modern minimal hosting pattern in Program.cs
• Updated Castle SDK configuration to use test tokens instead of hardcoded values

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
CastleDemo.csproj	Updated target framework to .NET 9.0 and Castle SDK version
Program.cs	Complete rewrite from old hosting model to minimal hosting with modern service configuration
Startup.cs	Removed entire file as part of migration to minimal hosting
appsettings*.json	Updated Castle configuration with API secret and test request token
Risk/Log/Filter pages	Updated to use configuration-based test tokens instead of hardcoded values
_Layout.cshtml	Removed client-side Castle fingerprinting script
README.md	Updated documentation to reflect .NET 9.0 and configuration changes

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