Bind sockets ourselves and pass them to uvicorn (Server.serve(sockets) or the
ChangeReload/Multiprocess supervisors, same API uvicorn.run uses). localhost
expands to 127.0.0.1 and ::1 so clients reach the server regardless of how
localhost resolves; individual bind failures degrade with a warning. Reload
mode now serves all endpoints instead of only the first, multi-endpoint
configs no longer run lifespan twice, and unix sockets are cleaned up on
exit.
LeoVasanko