BASE 44 ORDER: Build breakthrough_cache table with phi_hash, JSONB, BRIN index and 5-min prune timer — E8 Intelligence Research

Andrew's order (Base 44 console): [SELF-BUILD from enhancement #1341] Create breakthrough_cache table with phi_hash BIGINT, payload JSONB, BRIN index. Implement Python cache-check/insert using golden-ratio hash. Add systemd timer running SQL to prune stale entries every 5 minutes. Wire into lookup path before main query. MERLIN: Understood. I will create the breakthrough_cache table with phi_hash BIGINT, payload JSONB, and a BRIN index, then implement the Python cache-check/insert using the golden-ratio hash. I will also add a systemd timer to run the SQL prune every 5 minutes and wire the cache into the lookup path before the main query. Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com