nx_init_live.nx

nx_init_live.nx -- GATE: REAL process supervision. Reworks nx_init (dependency-ordered start, Kahn topo) + nx_supervise (restart-with-give-up-cap) onto ACTUAL forked child processes with wait4(WNOHANG) liveness -- closing the INIT-SERVICES census gap ("real fork/wait liveness wiring"). Grounded on the banked field research (pp_init/ pp_wait/pp_zombie/pp_systemd/pp_runit): PID1 reaps children; a supervisor detects death via wait4 and restarts with backoff + a give-up cap (no restart storm). The liveness primitive is proven (nx_initlive_probe: real fork + wait4 WNOHANG detects death w/ exit code, distinguishes alive). Services (dependency-ordered): base(healthy) <- worker(crashy, the cap demo) & logger(healthy). T1 dependency-ordered start (topo): base starts before its dependents; order respected. T2 healthy services (base+logger) stay ALIVE with 0 restarts -- wait4 WNOHANG reported alive every tick (REAL). T3 the crashy worker is DETECTED dead + re-forked until the cap -> gaveup (real death-detection + restart loop). T4 teeth: the worker's (cap+1) spawns are ALL DISTINCT pids (genuine new processes) + restarts NEVER exceed cap. T5 teardown: the healthy children are blocking-reaped (real pids, no zombie left). expect_exit: 0 Sovereign: nx_syscalls (fork/wait4/poll). NEVER-BRICK: forks+reaps userspace procs, 0 firmware.