Exact release

release{ Constructed: one connected quantum response at first source order; its complete ambiguity in a stated prescription class; an exactly evaluated nonzero invariant test; a delayed source/readout realization; and the general descent and stability results.

Explicit restriction: the affirmative result is for a local free massless scalar benchmark with fixed vacuum, calibrated field and composite normalization, and no physical spacetime boundary.

Not constructed: an embedding of VII-D's reflected triangle in a complete interacting response; the inherited gravitational characteristic quantum coefficient; an interacting gravitational Ward identity; or a measurement instrument for that coefficient.

The benchmark demonstrates the proposed logical sequence without claiming to close an unrelated analytic gate.}