Fix 401 error: Add authenticated API proxy for private datasets

src/app/api/hf-proxy/route.ts

@@ -39,13 +39,13 @@ async function handleRequest(request: NextRequest, method: 'GET' | 'HEAD') {
     const envKeys = Object.keys(process.env).filter(k => 
       k.includes('HF') || k.includes('TOKEN') || k.includes('HUGGING')
     );
-    console.error('❌ HF_TOKEN not found!');
+    console.error('HF_TOKEN not found!');
     console.error('Checked: HF_TOKEN, HUGGINGFACE_TOKEN, HF_API_TOKEN, HUGGING_FACE_HUB_TOKEN');
     console.error('Available env vars with HF/TOKEN:', envKeys.length > 0 ? envKeys.join(', ') : 'NONE');
     console.error('⚠️  Requests to private repos will fail with 401');
     console.error('💡 Make sure HF_TOKEN secret is added in Space Settings → Variables and secrets');
   } else {
-    console.log('✓ HF_TOKEN found (length:', token.length, 'chars, starts with:', token.substring(0, 5) + '...')');
+    console.log('HF_TOKEN found (length:', token.length, 'chars, starts with:', token.substring(0, 5) + '...)');
   }
 
   try {