I do not see a way to query the spawn chunks in scarpet. I propose adding that information to system_info, seeing that other mutable values (eg. game_difficulty) are already present.

Examples:

// Location of the spawn chunk, in chunk coordinates:
l(cx, cz) = system_info():'spawn_chunk';
// Location of the spawn chunk, in world coordinates:
l(wx, wz) = map(system_info():'spawn_chunk', 16*_);

agree, there should be system_info('world_spawn_point')

chunk_tickets(system_info('world_spawn_point'))