Refactor test configuration and update type definitions for better compatibility with Prisma

vitest.config.ts

@@ -11,7 +11,6 @@ export default defineConfig({
     passWithNoTests: true,
     teardownTimeout: 5000,
     // Testing environment setup
-    environment: 'jsdom',
     setupFiles: ['./src/test/setup.ts'],
     // Ensure we're using the right environment
     environment: 'node',