fix: use node adapter for frontend

frontend/svelte.config.js

@@ -1,4 +1,4 @@
-import adapter from "@sveltejs/adapter-auto";
+import adapter from "@sveltejs/adapter-node";
 import { vitePreprocess } from "@sveltejs/kit/vite";
 
 /** @type {import('@sveltejs/kit').Config} */
@@ -8,9 +8,6 @@ const config = {
   preprocess: vitePreprocess(),
 
   kit: {
-    // adapter-auto only supports some environments, see https://kit.svelte.dev/docs/adapter-auto for a list.
-    // If your environment is not supported or you settled on a specific environment, switch out the adapter.
-    // See https://kit.svelte.dev/docs/adapters for more information about adapters.
     adapter: adapter(),
   },
 };