Abstract

We combine three supplied manuscripts on partitioned quantum dynamics with a preceding snapshot–channel comparison, separating proved discrete results, geometric scaling results, and additional operational and algebraic requirements. Complete hybrid instruments admit equivalent snapshot-factorization and Heisenberg-support descriptions. This gives an order-theoretic domain of dependence, its exact metric envelope, and invariance under legal reorderings of one finite causal network. Scheduled ancestry bounds influence but need not equal it.

We give a self-contained increasing-stencil construction and a uniform shape estimate

The changing word metrics therefore have Euclidean limiting cone envelopes, while admissible relays have limiting speed $c$ in every direction. For an explicitly defined, full-tail, fixed-wire outcome-law theory, matched modifications satisfy continuum domain of dependence, operational no-signalling, and sharp maximal speed $c$.

The supplied transport manuscript is not treated as an unchecked premise. Its common-final-tick readout convention is incompatible with its asserted boost action, and its spatial routing estimates do not establish the required spacetime support estimates. Additional normalization, scheduling, and algebraic issues are isolated. A corrected transport contract yields, conditionally, a Poincare action on the coarse relational theory in every $D\ge 1$. Observable-algebra microcausality requires a separate localized, product-preserving realization; commuting channels alone do not supply it. Unrestricted device resynchronization closure remains withdrawn because it excludes ordinary bidirectional relays. No instrument-level scaling limit, relativistic field theory, gravitational dynamics, or invariant physical speed is derived.