This PR:

• closes TML-1529
• refactors the @prisma/extension-read-replicas extension to support Prisma 7.0+
• refactors the tests to and demo to use PrismaPg
• removes support for urls in readReplicas' input
  • now, the only input options available are:

      type ReplicasOptions = {
          replicas: PrismaClient[]
      }

    This is necessary due to Prisma 7's architectural changes.
• updates the README

Prisma 7 Compatibility

• Driver adapter support: The extension now works with Prisma 7's driver adapter pattern (e.g., @prisma/adapter-pg)
• Accelerate URL support: Added support for Prisma Accelerate URLs as an alternative to driver adapters
• Updated extension imports: Changed from @prisma/client to @prisma/client/extension.js for proper Prisma 7 compatibility

Breaking Changes

⚠️ This update requires Prisma 7.0+ and is not compatible with Prisma 6.x or earlier versions.

You can use @prisma/extension-read-replicas as follows:

import { readReplicas } from '@prisma/extension-read-replicas'
import { PrismaPg } from '@prisma/adapter-pg'
import { PrismaClient } from './generated/prisma/client'

const mainAdapter = new PrismaPg({
  connectionString: process.env.DATABASE_URL!,
})

const mainClient = new PrismaClient({ adapter: mainAdapter })

const replicaAdapter = new PrismaPg({
  connectionString: process.env.REPLICA_URL!,
})

const replicaClient = new PrismaClient({ adapter: replicaAdapter })

const replicaAccelerateClient = = new PrismaClient({ accelerateUrl: process.env.REPLICA_ACCELERATE_URL!, })

const client = new PrismaClient({ adapter: mainAdapter })
  .$extends(readReplicas({ replicas: [replicaClient, replicaAccelerateClient] }))