Zeno-Amplified Sidereal Modulation: A Reassessment of a Proposed Laboratory Test for Preferred-Frame Effects

Version 1.0 of this work proposed a laboratory test for preferred-frame effects (kinematic Lorentz invariance violation, LIV) based on the Continuous Quantum Zeno Effect (CQZE), formulated within an effective information-theoretic framework in which a process budget I² + R² + C² = 1 allocates a node's update capacity between internal coherence (I), relocation (R), and environmental coupling (C). Under the identification Γeff = Γ₀\,I, a change in kinematic load R = vpref/c would modulate a Zeno-suppressed decay rate, amplified quadratically by the Zeno factor Z = Γ₀/Γeff. This version (v1.1) reassesses that proposal. A subsequent analysis of the substrate node dynamics shows that the amplification requires the continuous measurement to tap the proper-time-bearing internal (Compton-scale) generator, whereas the measurement channel selected by the substrate's octahedral (Oₕ) symmetry is block-scalar in the internal-mode basis and hence commutes with that generator — it is quantum-non-demolition with respect to the internal clock and does not directly freeze its Hamiltonian evolution. Within the reassessed framework dynamics, this QND channel additionally co-dilates with the internal process and therefore does not rescale the clock relative to a comoving reference. The ordinary strongly-monitored CQZE setups considered here therefore couple through the commuting (Born-type) face of the crosstalk channel and are not expected to produce the proposed Z²-amplified signal even if the framework is correct; such a null result would be inconclusive rather than a clean falsification. We accordingly withdraw the Z²-amplified detection as a promising near-term test in its originally proposed form. The withdrawal concerns the originally proposed physical realization rather than the conditional algebra: the Z² relation and the sidereal preferred-frame-discriminator logic remain mathematically consistent under the shared-budget closure assumption. On the accessible platforms, commutation with the internal generator removes the specific shared-root mechanism responsible for the proposed Z² amplification. Any residual response is therefore not predicted to receive that amplification; under an order-unity power-law response it would remain at the base kinematic scale ~10⁻⁹, while under the framework's universal co-dilation it vanishes exactly, producing a structural, self-veiled null. Any realization that could reopen the channel would have to produce a differential response not removed by this co-dilation — for which no mechanism is presently known within the framework — so we regard the channel as plausibly closed in principle, while stopping short of a formal no-go theorem. Read this way, the negative experimental verdict is a positive illustration of how completely the substrate hides uniform absolute motion. For the scientific record we retain, as a conditional reconstruction under the original shared-budget closure assumption, the derivation of the predicted modulation (ΔΓ/Γ ≈ 3.6 × 10⁻⁵ at $Z = 100$, equatorial CMB-frame estimate), the sidereal/Z² discriminators, and the Quantum Zeno Anemometer extraction protocol. Section 8.4 gives the reasoning; Section 6 states the revised empirical status.