Refactor Prisma client usage and enhance service integration for improved connection management

prisma/prisma.ts

@@ -1,8 +1,8 @@
 // prisma.ts
-import { PrismaClient } from '@prisma/client';
+// Re-export from the main singleton for consistency
+import { prisma } from '../src/common/database/prisma.client';
 
-// The DATABASE_URL environment variable will be automatically used
-export const prisma = new PrismaClient();
+export { prisma };
 
 process.on('SIGINT', async () => {
   await prisma.$disconnect();