fix(drizzle): avoid runtime import in migration config

drizzle.config.ts

@@ -1,12 +1,10 @@
-import { defineConfig } from 'drizzle-kit';
-
 const databaseUrl = process.env.DATABASE_URL?.trim();
 
 if (!databaseUrl) {
   throw new Error('DATABASE_URL is required to run Drizzle migrations.');
 }
 
-export default defineConfig({
+export default {
   schema: './lib/server/db/schema.ts',
   out: './drizzle',
   dialect: 'postgresql',
@@ -15,4 +13,4 @@ export default defineConfig({
   },
   strict: true,
   verbose: true
-});
+};