Built a self-hosted personal AI OS — PostgreSQL + pgvector at the center.
Notes, emails, calendar, contacts, files, diary, photos in one DB. Knowledge graph via recursive CTEs (no Neo4j). Heat scoring with exponential decay. Hybrid search fusing 4 signals via RRF.
A 2B local model extracts entities. Background jobs discover connections while you sleep.
dev.to/micelclaw — 9 posts on the architecture.
