Fix null RT correction selection path - #771

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache@v4, actions/checkout@v4, actions/setup-dotnet@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

The event 'DataGridPasteCommand.CanExecuteChanged' is never used

The target framework 'netcoreapp3.1' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.

The target framework 'netcoreapp3.0' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.

The field 'ResponseTag.count' is assigned but its value is never used

The variable 'e' is declared but never used

The variable 'e' is declared but never used

The variable 'output' is assigned but its value is never used

The variable 'ownfilepath' is assigned but its value is never used

The variable 'folderpath' is assigned but its value is never used

The variable 'ex' is declared but never used

The target framework 'netcoreapp3.0' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.