Phase-Locked Readout and Relational Displacement II: The Chirality Gate, Two Realizations, and the Missing Weight Law

Can a phase-locked internal readout encode a change of position that a second observer can measure after the interaction ends? Part I formulates this possibility as a working axiom of the R⁸ framework. It asks how ordinary motion can remain protected while an exceptional displacement can be deliberately accessed. A frozen seven-wall field supports a static groove, and reduced quantum models exhibit transient transfer between cells. A separate two-clock model has a locally elliptic 3:4 orbit and nearby motions at the same energy that reach the gate. A stationary loaded carrier and a quantum transition between these regimes remain open. Part II tests how the direction of a displacement could reveal its mechanism. With two primary readout weights locked, reversing a spare weight selects opposite internal windings. An independent reversal of one inert field component gives four preparations. A calibrated observer reconstructs target and reference positions from local intensities alone. Selection between counterpropagating elastic packets gives an even displacement response and force-free rest at the matched phases. Small phase errors leave a measurable drift. A driven screw with a recoiling material ruler gives an odd response at fine resolution and recurring motion within each late clock period. Two coarse trajectories exceed the preset energy tolerance, leaving the joint verdict unresolved. Connecting either realization to physical motion in the Leaf requires a dynamical law for the readout weights and a reciprocal, spatially calibrated coupling to matter. **Causality and the null energy condition.** Any physical realization of the phase-locked readout proposed in Parts I and II must respect the local light cone of the Leaf. An intervention that changes the internal readout can affect a material detector only within the causal future of that intervention. The local speed of signal propagation must therefore be at most *c*. We also require the total classical stress–energy tensor of the proposed realization to satisfy the pointwise null energy condition (NEC): *T(k, k) ≥ 0* for every null vector *k* at every spacetime point. The reduced models test displacement, recoil and energy balance. Verifying causal propagation and the NEC remains an open task for a relativistic realization of the mechanism.