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+# Distinct poster and merge executor control
+
+Non-product fixture for merge-message behavior measurement.
+
+The pull request poster and commit author are mos. The intended merge executor is fred. The proposed measurement supplies a plain, non-trailer-shaped merge title and message through the reviewed merge tooling.
+
+No outcome is asserted before inspecting the resulting commit. Preserve the exact request, source head and resulting commit as evidence. No credentials are shared. Existing review and CI gates remain required.