Fix: Define githubToken before use

app/api/github-upload/route.ts

@@ -5,6 +5,7 @@ import path from 'path';
 
 export async function POST(req: NextRequest) {
   const { repo, branch } = await req.json();
+  const githubToken = process.env.GITHUB_TOKEN;
   const blabladorApiKey = process.env.BLABLADOR_API_KEY;
 
   if (!githubToken) {