Follow-up to last hour's whd findings. "The main GUI still independently calculated marking-hole X/count/pitch/Y while the Engine's real IndicatorBox MARKING scene generated the same pattern." Other PRs remove a GUI copy of part-identity logic and stop the engine from replacing corrupt inputs with a default group "or fabricating 1mm physical Door/BasePlate sizes for invalid geometry." Agent-written PRs, each starting with a SOURCE_READ_EVIDENCE block listing what was read first, which is its own interesting habit.