K3-17's known-negative as a mechanism, on a hand-written fixture in an
invented setting. The question names a long section by four of its title
tokens and happens to contain the whole of a neighbour's one-token title.
The fusion reads the long section first; round 16's partition lifts the
covered one-token title over it, because the partition states the covered
title's precision and never compares it with what the title above answers.
Two tests are red on 7cca9e0 and are the defect:
test_a_covered_short_title_does_not_pass_a_title_answering_more_of_the_question
test_a_blocked_covered_title_leaves_the_payload_as_the_fusion_built_it
Five are green and guard the repair's shape: the fusion order without the
rule, the group of one, round 16's upside past a narrower neighbour, the
blocker count by EQUALITY (a prefix-only match must not block), and
invariance to words no title holds (why the repair is not a share of the
question).
pytest -q on 7cca9e0 + this file: 2 failed, 1598 passed, 1 skipped.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
