Global apparatus boundary

apparatus boundary{ Theorems thm:locality and thm:transport certify the finite carrier and control network. The global field operations $W_{A_i}$ remain admitted global apparatuses. Their assignment to an externally scheduled experiment does not prove that their action on local field observables lies inside a compact spacetime region.

No local causal-support theorem for those global apparatuses, no within-tick SWAP Hamiltonian, and no compact system–probe field interaction is inferred. A full causal field implementation would require an additional same-model construction.}