1. Create MySQL/MariaDB database prime_plastics.
2. Create a restricted database user.
3. Import database/migrations/001_core_schema.sql.
4. Configure PHP/server-side API and keep DB credentials outside public_html.
5. Protect storage/ from public access.
6. Enable HTTPS.
7. Configure authentication, sessions, roles, CSRF and server-side validation.
8. Configure automated database backups and test restore.
9. Keep current Supabase system live during migration.
10. Migrate and verify existing data before switching production.