SSR을 비활성화하여 SPA로 전환

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

package.json

@@ -5,6 +5,7 @@
   "type": "module",
   "scripts": {
     "dev": "vite dev",
+    "dev:remote": "__VITE_ADDITIONAL_SERVER_ALLOWED_HOSTS=.ts.net vite dev --host 0.0.0.0",
     "build": "vite build",
     "preview": "vite preview",
     "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",