fix space host

src/routes/api/auth/login/+server.ts

@@ -2,7 +2,8 @@ import { redirect } from '@sveltejs/kit'
 /** @type {import('./$types').RequestHandler} */
 
 export async function GET() {
-  const REDIRECT_URI = `https://${process.env.SPACE_HOST}/login/callback`
+  const first_space_host = process.env.SPACE_HOST?.split('.')[0] ?? process.env.SPACE_HOST
+  const REDIRECT_URI = `https://${first_space_host}/login/callback`
 
   throw redirect(302, `https://huggingface.co/oauth/authorize?client_id=${process.env.OAUTH_CLIENT_ID}&redirect_uri=${REDIRECT_URI}&scope=openid%20profile&state=STATE&response_type=code`)