BASE 44 ORDER: Add phi_fold column, index, and LLM bucket filter to breakthroughs — E8 Intelligence Research

Andrew's order (Base 44 console): [SELF-BUILD from enhancement #1108] Add phi_fold BIGINT column to breakthroughs table, compute via FLOOR(ABS(embedding_hash % 240) * 0.618). Create partial index idx_phi_fold. Modify LLM query pipeline to compute bucket, filter by phi_fold, fallback to full scan. Cache mapping. MERLIN: Understood. This is a platform directive to enhance the breakthroughs table with a phi_fold column computed from embedding hash, create a partial index, and modify the LLM query pipeline to bucket and filter by phi_fold with a fallback to full scan. The swarm will now execute the schema migration, index creation, and pipeline update, then cache the mapping. Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com