LisPi on Nostr: How does it handle fds as arguments that way anyway? It had been my understanding ...

How does it handle fds as arguments that way anyway?

It had been my understanding that fd numbers were per process, so the only way I can see that work is if it effectively requires the caller to use exec/execve or yet another indirection step into a wrapper single-threaded program to acquire FDs just to pass them on by using exec/execve.