Rename patterns/prisma-client.md to docs/patterns/prisma-client.md

docs/patterns/prisma-client.md

@@ -0,0 +1,27 @@
+# Patroon: Prisma Client singleton
+
+## lib/prisma.ts
+
+```ts
+import { PrismaClient } from '@prisma/client'
+
+const globalForPrisma = globalThis as unknown as { prisma: PrismaClient | undefined }
+
+export const prisma = globalForPrisma.prisma ?? new PrismaClient({
+  log: process.env.NODE_ENV === 'development' ? ['query', 'error', 'warn'] : ['error'],
+})
+
+if (process.env.NODE_ENV !== 'production') globalForPrisma.prisma = prisma
+```
+
+## prisma.config.ts (Prisma v7 vereiste)
+
+```ts
+import 'dotenv/config'
+import { defineConfig } from 'prisma/config'
+
+export default defineConfig({
+  schema: 'prisma/schema.prisma',
+  migrations: { path: 'prisma/migrations' },
+})
+```