nx_lifecycle_gate.nx

nx_lifecycle_gate.nx -- GATE: the wear/repair/ETERNAL lifecycle twin on the refrigerator. Parts carry wear-life (days), part cost, labor cost, replaceable: 0 Compressor(5475d) 1 DoorSeal(1825d) 2 ControlBoard(3650d) 3 SteelShell(10950d). T1 ETERNAL -- all parts replaceable -> the fridge is eternal (swap each as it wears, forever). T2 LIMITED -- make the shell non-replaceable -> not eternal; system life capped at the shell's 10950 days. T3 REPLACE-DAY-- compressor labor($80) > part($45) -> replace at wear-out (X=5475d); a cheap-labor part -> replace early at 80%. T4 EVOLVING -- replacing the control board with a better one each cycle: cap 100 -> 200 over 4 cycles. T5 MAINT-COST -- over a 30-year (10950d) horizon the compressor is replaced 2x = 25000c of parts+labor. T6 NEVER-BRICK-- deterministic. GREEN iff all. Sovereign nx_cc->nxasm. expect_exit: 0 license_tier: ORIGINAL