nx_gauge_gate.nx

nx_gauge_gate.nx -- CE9 (codeeffectiveness sm_gauge_alarm): the gauge-heartbeat ruler proven on planted stamps. In-process over nx_gauge_lib (the ONE classifier the writing beat and the /compare emitter both use), so a stale gauge is proven to read STALE and never zero, a blind axis to read BLIND, an absent stamp ABSENT, a future stamp STALE (clock skew is never fresh), the value present ONLY on a FRESH row, and an unpinned cadence STALE by construction. Every parsed field is -1 when absent, never 0. Rows written with real bytes under /tmp. exit: 0 GREEN . 1 RED . 3 SKIP license_tier: ORIGINAL No hw writes.