Declarations

level. The free algebra is a formal algebra of compactly smeared linear fields and finite products. No Hilbert-space representation or state is selected.

level. Initial and final data specify causal inverses. No independent boundary algebra, BRST boundary charge, or admission topology is constructed.

level. The switched stress-tensor vertex remains a named classical interaction. It is not used in any contraction with the ramp dressing and is not included in $s_0$.

. No successful pdflatex execution, proof-assistant verification, executed symbolic computation, independent referee review, or journal acceptance is asserted.