chore: SQLite verwijderd — alleen PostgreSQL via Neon

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lib/prisma.ts

@@ -1,5 +1,4 @@
 import { PrismaClient } from '@prisma/client'
-import { PrismaBetterSqlite3 } from '@prisma/adapter-better-sqlite3'
 import { Pool } from 'pg'
 import { PrismaPg } from '@prisma/adapter-pg'
 
@@ -7,14 +6,6 @@ function createPrismaClient() {
   const url = process.env.DATABASE_URL
   if (!url) throw new Error('DATABASE_URL is not set')
 
-  if (url.startsWith('file:')) {
-    const adapter = new PrismaBetterSqlite3({ url })
-    return new PrismaClient({
-      adapter,
-      log: process.env.NODE_ENV === 'development' ? ['error', 'warn'] : ['error'],
-    })
-  }
-
   const pool = new Pool({ connectionString: url })
   const adapter = new PrismaPg(pool)
   return new PrismaClient({