Struct Spawned 

struct Spawned {
    name: String,
    kind: String,
    child: Child,
    pid: u32,
    pgid: u32,
}

Fields

name: String

kind: String

“system_builtin” | “system_package” | “primitive” | “service”

child: Child

pid: u32

pgid: u32

Process group id. Each child is spawned with process_group(0) so it becomes the leader of a new PGID == its own PID. Tear-down signals -PGID to take the whole subtree (rbnx start wrapper + inner interpreter + any docker-exec wrappers it forked).