I wrote an article about Sestriere, MeshCore and why Haiku’s architecture is a natural fit for mesh radio communication.
It covers how BMessage/BLooper maps to async radio packet handling, the MeshCore ecosystem, and a practical scenario of off-grid communication in an alpine valley.
You can read it here: https://www.desktoponfire.com/haikuos/software/830/communicating-without-internet-haiku-os-meshcore-and-an-app-that-smells-of-venice/
Hope you enjoy it, feedback welcome as always!