RED. The fixture is handwritten and carries no sentence from any corpus: one
source document, one broad section titled with the question's subject alone,
one narrower section adding a qualifier the question never uses, one
known-negative whose title shares four leading characters with the subject,
and twelve fillers.
Measured on the fixture at HEAD (02f9876):
1 bb-narrow 0.04918 lex 4 'Temporary anchoring'
2 cc-prefix 0.04918 lex 4 'Anchorage'
3 aa-broad 0.04866 lex 3 'Anchoring'
which is the same shape as the three R761 misses. pytest -q on this file:
4 failed, 1 passed. The one that passes is the characterisation the rule
stands on -- with one source document the third signal takes ONE distinct
value over the whole bundle, so a third of the fusion carries no information.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
