Remove entire backend search domain including: - NlSearchController, NlQueryParserService, NlpClient implementations - Rate limiting, properties, DTOs (NlSearchRequest/Response/NlQueryInterpretation) - All domain logic and tests (5 test files deleted) Backend compiles successfully post-deletion. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
9-task TDD plan for persons_tree.py — year extraction, name index, deduplication, SPOUSE_OF/PARENT_OF extraction, CLI + JSON output. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>