_map_service_contract_to_rows now carries the two v2 fields onto exam_questions
ghost rows (command_word on leaf parts, preamble jsonb). Requires supabase
migration 78; applied to dev .94.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GruxHXxfdp4kZCgAMVFgvV