One Field: Gravity, Dark Matter, Dark Energy, and the Arrow of Time in Event Density

Claimed: a conditional, falsifiable, structurally economical unification — the weak-field Einstein metric with its classical tests; the khronometric class with the arrow as its single deviation from GR; the MOND sector as that scalar’s deep regime, lensing-correct without additions; the cosmological sector sequestered, dust-capable, and carrying the Λ-scale — all from one field whose origin (the arrow) predates all of its jobs. Not claimed: that GR is “cracked” or re-derived from nothing (the Planck scale ℓ_P and the cosmic rate H_0 are the inherited scales; G = (c^3ℓ_P^2 P) /ℏ and a0 = (cH_0)/2π are derived coefficients of those scales, not independent inputs; one postulate and one matching are labeled and loadbearing); that dark matter or dark energy are “solved” (the clusters/CMB debt is addressable, not discharged; no Λ value is derived — the matching transports the inherited tier, it does not upgrade it); that the matter-sector cosmological-constant problem is touched; or that any of this is confirmed. The five-filter dial is unset. (The preferred-frame numbers, formerly uncomputed, are computed and suppressed in GR-IV — see the kill-switch note above.) The deep question — why the substrate’s response goes geometric-mean below the cosmic rate — is deliberately left open rather than reverse-engineered.