The controller that merged (mesh-controller #116) dropped the staged seat and
marked both verbs optional, stored in the seat's row and read back optional.
Design 33 said a seat's verbs change additively, and section 3 made each
one a condition of holding, so a verb added in the controller and served
from the catalogue could land in neither order. It happened three times on
2026-10-07. Section 7 now says the three steps and how each is checked.