Cosmological Implications of the Causal-Machian Time Field

Building on the causal-Machian emergent time theory Jaster2026a, Jaster2026b, we examine the cosmological implications of the scalar time field (x) 0, 1. In exactly homogeneous FLRW spacetime =1 identically and standard cosmology is fully reproduced. In the inhomogeneous universe, deviates from unity only at the level imposed by the causal horizon averaging; because a typical cosmic void occupies a volume fraction 410^-7 of the causal horizon, the resulting deviation 1- ₕ₎₈₃ is exponentially suppressed by the flat C^ saturation function S_ and is quantitatively negligible in the present epoch. The phenomenological consequences of <1 in voids -- including possible contributions to the ₈ tension, the modified ISW effect, void clocks, and -shell lensing -- are therefore of unmeasurably small amplitude and are discussed as conceptual predictions only. The CMB hemispheric asymmetry has a possible structural source in the directional properties of UH^, independently of <1. The model does not resolve the Hubble tension; in the heuristic background-level treatment any correction would have the wrong sign, but its amplitude is negligible. The cosmological constant remains necessary. Two conceptual solution classes are identified: timeless solutions and -shells. Spacetimes with closed timelike curves are structurally excluded from the regular sector. Planck-mass black hole remnants are possible dark matter candidates if Planck-scale smearing halts evaporation.