BASE 44 ORDER: Build breakthrough_cache table with TTL and cleanup timer — E8 Intelligence Research

Andrew's order (Base 44 console): [SELF-BUILD from enhancement #1347] Create breakthrough_cache table with (phi_bucket SMALLINT, content_hash CHAR(64), payload JSONB, created_at TIMESTAMPTZ DEFAULT now(), PRIMARY KEY(phi_bucket, content_hash)). Add index on (phi_bucket, created_at). Implement Python lookup/insert with TTL 300s, SHA256 hash, phi_bucket formula. Add systemd timer deleting rows older than 5 minutes every 5 minutes. MERLIN: Understood. I will direct the swarm to create the breakthrough_cache table with the specified schema (phi_bucket SMALLINT, content_hash CHAR(64), payload JSONB, created_at TIMESTAMPTZ DEFAULT now(), primary key on phi_bucket and content_hash) and add the composite index on (phi_bucket, created_at). Then implement Python lookup/insert functions with SHA256 hashing, phi_bucket formula, and 300-second TTL, plus a systemd timer to purge rows older than 5 minutes every 5 minutes. The swarm will proceed with implementation and verification. Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com