SQLite/Turso Migration

STATUS: DRAFT — This skill is planned but not yet fully implemented.

What This Does

Provides a step-by-step migration pattern for moving Prisma-managed PostgreSQL schemas to SQLite (local) or Turso (edge-replicated SQLite). Handles the key incompatibilities between Postgres and SQLite: no arrays (→ JSON columns), no enums (→ text with check constraints), no UUID type (→ text), and different auto-increment semantics. Includes a validation harness to verify data integrity post-migration.

Planned Capabilities

• Prisma schema converter: Postgres dialect → SQLite-compatible schema
• Data migration script with batched upserts and progress reporting
• Turso connection adapter for Prisma (via @prisma/adapter-libsql)
• Type mapping reference: Postgres → SQLite equivalents
• Rollback procedure with dual-write transition period
• Integration tests comparing query results across both databases

When To Use

• Moving a low-traffic AI app from Supabase/Neon/Railway Postgres to Turso to cut costs
• Building local-first apps that sync to Turso for multi-device access
• Migrating from Drizzle/Prisma Postgres to a SQLite-compatible edge setup
• Reducing database cold-start latency by switching from hosted Postgres to embedded SQLite