b01c798739
- Implement CommSearchProvider: index_message(), reindex_all() with FTS + vector search - Add migration 0035: search_tsv + embedding columns on comm_messages - Fix DMS group-share: use current_user user_id instead of random uuid4() - Workflows already DB-configurable (seed from onboarding.py, loaded from DB) - Mail salt already dynamic with legacy fallback (migration 0026)