nx_field_beat.nx

nx_field_beat.nx -- THE OFF-PEAK FIELD BEAT (/compare/fieldwatch FW4, 2026-09-05): re-runs nx_field_discover for every domain on regen.list that carries a .seeds file, so the discovered field is LIVING -- re-read on a beat, never authored once. "Not during peak times" (operator, 2026-09-05) is MEASURED, not guessed: the clock row `fieldbeat` is listed in knowledge/status/clock_heavy.conf, so nx_clock_tickless defers it through clk_storm_defer while nx_ioadmit_lib reports zero spawn budget (the same D-state line /api/build refuses on); a wall-clock window would be a magic number that dispatches into a storm at 03:00 and idles a quiet afternoon. Stamp: knowledge/status/fieldbeat.stamp, truncate-written LAST (ts= domains= ran= ok= failed= skipped_no_seeds= sum= candidates_total= drifted_total= capped= verdict=GREEN|RED|EMPTY); a non-default list stamps <list>.stamp so a trial run can never forge the production heartbeat. Journal: knowledge/status/fieldbeat.jrnl, one row per domain per run (append). The decisions live in nx_field_beat_lib (gated in-process); the first production stamp is the wire's witness. fw_beat is the FW4 watch symbol: it IS the loop, not a name written to flip a cell. fw_refetch_drift is the FW5 watch symbol: the discover organ re-fetches every seed on every run and reports drifted= (a mirror whose bytes changed since the previous fetch); this beat sums it into drifted_total= -- a COUNT, never an alarm, because a dynamic page carrying a per-request nonce drifts every beat; the alarm is the .field diff FW9 raises when a rival appears or vanishes. Usage: nx_field_beat [list-path] default buildroot/knowledge/compare/regen.list Exits: 0 every domain with seeds ran OK | 1 at least one domain FAILED (stamp written, verdict=RED) | 2 usage | 3 refused: list unreadable or names no domain (NO stamp), or no domain carried seeds (stamp verdict=EMPTY) license_tier: ORIGINAL No hw writes (Rule 26). expect_exit: 0