DB migrations and schema changes (letta-cloud core)

Use this skill whenever you need to change the database schema or debug Alembic migrations in apps/core of the letta-cloud repo.

This skill assumes:

• Working directory: apps/core
• Migrations: Alembic in apps/core/alembic
• Python runner: uv
• Helper: just ready for environment + DB setup

Quick start

1. Ensure environment is ready:
   • just ready
2. For Postgres migrations, set:
   • export LETTA_PG_URI=postgresql+pg8000://postgres:postgres@localhost:5432/letta-core
3. Make your ORM/schema change.
4. Autogenerate migration: