fix: update admin scripts to use PostgreSQL adapter and dotenv

scripts/create-admin-via-api.js

@@ -1,22 +1,42 @@
 const { PrismaClient } = require('@prisma/client');
 const { betterAuth } = require('better-auth');
 const { prismaAdapter } = require('better-auth/adapters/prisma');
+const { PrismaPg } = require('@prisma/adapter-pg');
 
-const prisma = new PrismaClient();
+// Load environment variables from .env file
+require('dotenv').config();
+
+// Check if DATABASE_URL is set
+if (!process.env.DATABASE_URL) {
+  console.error('❌ DATABASE_URL environment variable is not set');
+  console.error('   Please set DATABASE_URL in your environment or .env file');
+  console.error('   Example: DATABASE_URL="postgresql://user:password@localhost:5432/dbname"');
+  process.exit(1);
+}
+
+// Create PrismaClient with adapter (matching src/lib/prisma.ts)
+const adapter = new PrismaPg({ connectionString: process.env.DATABASE_URL });
+const prisma = new PrismaClient({ adapter });
 
 // Create Better Auth instance
 const auth = betterAuth({
   database: prismaAdapter(prisma, {
-    provider: 'sqlite',
+    provider: 'postgresql',
   }),
   emailAndPassword: {
     enabled: true,
   },
   baseURL: process.env.BETTER_AUTH_URL || 'http://localhost:3000',
+  secret: process.env.BETTER_AUTH_SECRET || process.env.NEXTAUTH_SECRET || 'your-secret-key-here-change-this-in-production',
 });
 
 async function main() {
   try {
+    // Test database connection first
+    console.log('Connecting to database...');
+    await prisma.$connect();
+    console.log('✅ Connected to database');
+
     // Check if user exists
     const existing = await prisma.user.findUnique({
       where: { email: 'david@dhg.lol' }