Accounting-Companion/TallyConnector ? reverse-engineered prompt

Build me a C# library that makes it easy to connect desktop or mobile apps to Tally and work with the Tally XML API without having to manually build or parse XML all the time.

I want a simple, friendly API where I can connect to a local Tally instance, fetch things like ledgers, and generally interact with Tally using normal C# objects instead of raw XML. It should support the newer Tally Prime versions, and work on .NET 8, 9, and 10.

Please include the core library, the models, and a few practical examples so I can see how to use it right away. If it makes sense, also set up the source generator part that helps create TDL reports automatically and keeps requests efficient by only pulling the fields needed. Make the code clean, well organized, and ready to publish as a NuGet package. If you need to check current docs or behavior, look them up online.