Located defects surfaced from the segmenter (unclosed, unbalanced-close,
unterminated-string) plus over-depth when a bounded traversal abstained,
and defects raised inside a block body. A caller must not treat resolutions
as confident while a NON-POSITIONAL defect is present — isPositionalFact
in defects.ts is that test.
Q3 result: bracket resolutions plus any structural / over-depth defects.