fix: update admin scripts to use PostgreSQL adapter and dotenv

scripts/merge-duplicate-players.js

@@ -7,7 +7,14 @@
  */
 
 const { PrismaClient } = require('@prisma/client');
-const prisma = new PrismaClient();
+const { PrismaPg } = require('@prisma/adapter-pg');
+
+// Load environment variables from .env file
+require('dotenv').config();
+
+// Create PrismaClient with PostgreSQL adapter (matching src/lib/prisma.ts)
+const adapter = new PrismaPg({ connectionString: process.env.DATABASE_URL });
+const prisma = new PrismaClient({ adapter });
 
 // Pattern to extract base name from "Name-Timestamp-RandomString" format
 const NAME_PATTERN = /^(.+?)-(\d{13})-([a-z0-9]{6})$/;