Eliminates full table scans on all text search queries by enabling
pg_trgm extension and creating GIN indexes with gin_trgm_ops on
every column used in LIKE/ILIKE '%text%' patterns.
Changes:
- Add pg_trgm extension to schema.sql
- Add 10 GIN trigram indexes: contacts (full_name, first_name,
last_name, nickname, organization, email::text, phone::text),
calendar_events (summary), files (name), folders (name)
- Unify all LOWER(col) LIKE patterns to col ILIKE — eliminates
.to_lowercase() allocation in Rust and ensures index match
- Add minimum 3-char guard on search queries so PostgreSQL uses
the trigram index instead of falling back to sequential scan
- Add migration 004 with CONCURRENTLY for zero-downtime upgrades
Expected improvement: 100-500x faster text searches on large
datasets (e.g. 100K contacts: ~1.5s → ~3ms).
https://claude.ai/code/session_01QpWV7HXAagdZfyefUw6wKC
Claude
282c3b437c