fix: load .env.development in test setup files

vitest.setup.ts

@@ -1,4 +1,6 @@
 import '@testing-library/jest-dom'
+import path from 'path'
+import fs from 'fs'
 
 /**
  * Vitest Setup File
@@ -8,6 +10,20 @@ import '@testing-library/jest-dom'
  * to prevent accidental data corruption.
  */
 
+// Load .env file first, then .env.development (which will override .env)
+const envPath = path.resolve(process.cwd(), '.env');
+const envDevPath = path.resolve(process.cwd(), '.env.development');
+
+// Load base .env file
+if (fs.existsSync(envPath)) {
+  require('dotenv').config({ path: envPath });
+}
+
+// Load .env.development file (will override .env settings)
+if (fs.existsSync(envDevPath)) {
+  require('dotenv').config({ path: envDevPath, override: true });
+}
+
 // Check if DATABASE_URL is set and points to dev database
 const databaseUrl = process.env.DATABASE_URL;