Prisma Postgres Upgrade: Prisma ORM 6 or 7 to Prisma 8

Move a Node.js server on Prisma ORM 6 or 7 and PostgreSQL to Prisma 8 in one pass. The schema, the database and its data stay, and the app keeps running wherever it runs today.

This skill is the bridge. It covers only what is specific to leaving Prisma ORM 6 or 7. Prisma 8 itself (the contract, migrations, queries, errors) is covered by the prisma-8 skill that ships inside @prisma/orm-postgres, which step 2 installs. Follow it for anything Prisma 8 specific; it matches the installed version, and this skill does not.

prisma-8 says it does not apply to a project that still has schema.prisma and @prisma/client. That is expected mid-upgrade: this skill keeps both until step 5, and prisma7Schema(...) reads that schema.prisma. Use prisma-8 for the Prisma 8 side anyway.

The Prisma ORM 6 or 7 to 8 (PostgreSQL) guide is the source of truth for the steps.

Never do either of these: