nx_frame_pacing_gate.nx

nx_frame_pacing_gate.nx -- THE PACING REFEREE (gameengine GE15 pf_referee + GE32 perf_frame, 2026-09-02). Two subjects in one gate, both through nx_perf_lib (the ONE frame-budget ruler the wasm engine, the served HUD, the telemetry sink and this gate all share): (1) the RULER: nearest-rank percentiles, spike count, worst-ever and over-budget counters, the ring window, the clamp and the self-heal -- exact fixtures whose answers are arithmetic, plus a referee over synthetic traces with a planted stall (the anti-vacuity tooth: a referee that passes the stall is not a referee). (2) the LIVE WINDOW: the latest frametrace- plane row for the beach world (written by nx_world_telemetry from a real visitor's beacon) judged against knowledge/frame_pacing.conf -- a NAMED SKIP through gv_need when either is absent, never a green. The plane is read through nx_frame_pacing_lib (fpc_plane_latest / fpc_row_frames), the same reader the sink's peers use; no file format of its own. Bands are conf rows, never literals here. license_tier: ORIGINAL No hw writes (Rule 26). expect_exit: 0