Pre-upgrade checklist

Run through this checklist before applying the v2.0.0 migration scripts. Each item links to the page that explains why it matters.

• Full logical backup with pg_dump:

  ```bash
  pg_dump --no-owner --no-privileges -Fc -f cypex-pre-v2.dump cypex
  ```
  

• Filesystem snapshot of the PostgreSQL data directory, if your infrastructure supports it.