OptionalatOptionalauthorAuthoring metadata (which user added this op).
Boolean operator applied between the previous accumulator and operandGeomId.
geomId of the operand — points into the same Y.Doc geometry map.
Stable per-op UUID. We push (op) records, not (op, payload) pairs.
OptionaltransformOptional transform applied to the operand before the boolean.
Wall-clock authoring time.