7abe92eb1c
- check_verbatim now computes n-gram overlap for BOTH question_text and correct_option vs source texts, returning max(question_ratio, option_ratio). Extracted _ngram_overlap_ratio helper for reuse. - Added 4 missing blacklist patterns: 'this segment', 'this frame', 'the current frame', 'frame summary'. - Added 5 new test cases covering the above changes. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>