Development record

A lapsed_at carrying a nested map (an empty same-line value followed by an indented block) is read as absent by the committed-ledger gate because the lenient scanner yields an empty value and the null test passes, while capture's reader builds a map and refuses the record as not a string; on a non-lapse category the gate is green and the record is skipped invisibly. Sibling of the closed list case: when the same-line value is empty, look ahead for an indented continuation (blockSequenceAt already exists for the shape) and treat it as present and malformed.