- Add deduplicateResults() to search-legislation and build-legal-stance - Upgrade fts-query with stemming, boolean passthrough, LIKE fallback, OR tier - Use resolveDocumentId() for document_id parameter in search tools - Disclose query_strategy and note in metadata on broadened/failed queries - Add note and query_strategy optional fields to ResponseMetadata interface Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>