The Endpoint Response Merge Is Not Generated by Known Local Source Moves
The typed local presentation groupoid on the thirty-two legal signed Moore presentations has four connected components of size eight: two endpoint components and two through-going polarity components.
The reflection response merges the two endpoint components and preserves the through-going polarity split. None of the tested local source-authorized moves generates the endpoint identification. Therefore the three-state response port is not yet locally source-generated.
The remaining explanation gap is precise: derive a legal source correspondence between the two endpoint components, or classify their equal response as observation-specific coincidence.
Evidence:
research/strominger/the-endpoint-response-merge-is-not-generated-by-known-local-source-moves.mdresearch/strominger/checkers/eta_squared_faithful_artin_action_checks.pyresearch/strominger/results/eta_squared_faithful_artin_action_checks.json
Verification: sixty-four of sixty-four exact gates pass.