This source/framework preprint develops the nullity and paradox layer of a larger τ-Logic program in progress. Its central claim is not that zero is unreal, but that zero-readouts and structured absences are regime-bound and do not by themselves license inference to absolute ontological nullity. The paper uses a two-coordinate diagnostic to show how paradox pressure can arise when a visible one-dimensional readout is detached from the relational structure that makes it meaningful. Appendix D provides completed local demonstrations for selected zero/projection cases, and Appendix F gives bounded readout-collapse blocking results for Russell, Liar, and Yablo under declared regimes. Broader reconstructions, including Gödel, probability, entropy, and physics-facing calibration, remain companion or future theorem-level work rather than claims completed here.