4-signal matcher: category (0.2), keywords (0.2), zone (0.3),
scenario similarity (0.3). Scenario signal extracts action words
(eingeklemmt vs herabfallend vs durchschlaegt) to differentiate
similar-looking hazards at the same component.
Split benchmark_synonyms.go (70 lines) from benchmark_matcher.go
(516→450 lines) to stay under 500-line cap.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Benjamin Admin