fix: add PrismaPg adapter for PostgreSQL and fix GRANT statements

e2e/global.setup.ts

@@ -5,6 +5,7 @@
 
 import { chromium, type FullConfig } from '@playwright/test';
 import { PrismaClient } from '@prisma/client';
+import { PrismaPg } from '@prisma/adapter-pg';
 import path from 'path';
 import fs from 'fs';
 
@@ -40,6 +41,13 @@ if (isProductionDatabase()) {
   process.exit(1);
 }
 
+function createPrismaClient() {
+  const databaseUrl = process.env.DATABASE_URL;
+  if (!databaseUrl) throw new Error('DATABASE_URL is required');
+  const adapter = new PrismaPg({ connectionString: databaseUrl });
+  return new PrismaClient({ adapter });
+}
+
 async function resetDatabaseSchema(prisma: PrismaClient) {
   console.log('Resetting database schema...');
   
@@ -52,8 +60,6 @@ async function resetDatabaseSchema(prisma: PrismaClient) {
     await prisma.$executeRawUnsafe(`
       DROP SCHEMA public CASCADE;
       CREATE SCHEMA public;
-      GRANT ALL ON SCHEMA public TO postgres;
-      GRANT ALL ON SCHEMA public TO public;
     `);
     console.log(`Dropped ${tables.length} tables`);
   }
@@ -133,7 +139,7 @@ async function createTestUsers(config: FullConfig) {
 
     await page.waitForTimeout(2000);
 
-    const prisma = new PrismaClient();
+    const prisma = createPrismaClient();
     const user = await prisma.user.findUnique({ where: { email: adminEmail } });
     
     if (user) {
@@ -169,7 +175,7 @@ export default async function globalSetup(config: FullConfig) {
 
   if (isCIDatabase()) {
     console.log('CI environment detected - will reset database schema');
-    const prisma = new PrismaClient();
+    const prisma = createPrismaClient();
     await resetDatabaseSchema(prisma);
     await prisma.$disconnect();
   } else if (!isProductionDatabase()) {