Just thought I would share some work I have been doing recently on a C# parser for ADL archetypes.
When I say I, I mainly mean Claude Code 
The repo is at GitHub - clarotech/openEHR_ADL_Parser: A C# implementation for parsing ADL 1.4 archetypes from openEHR · GitHub. It’s open source, so feel free to take a good look around if you are interested. There are some usage details in the README.md file.
I need to do more testing, so I can not guarantee it’s perfect. I am still tinkering, so it will probably evolve as and when I get time.