Fix: Update Hugging Face Inference API endpoint to router.huggingface.co and stabilize auth

backend/controllers/ai.js

@@ -154,7 +154,7 @@ exports.chat = asyncHandler(async (req, res, next) => {
         const prompt = message.replace(/make me an image|generate an image|create an image|visualize/gi, "").trim();
         const hfToken = process.env.HF_TOKEN;
         const response = await axios.post(
-            `https://api-inference.huggingface.co/models/${MODELS['Codex Vision']}`,
+            `https://router.huggingface.co/hf-inference/models/${MODELS['Codex Vision']}`,
             { inputs: prompt },
             { headers: { Authorization: `Bearer ${hfToken}` }, responseType: 'arraybuffer' }
         );

backend/public/auth.html

@@ -112,6 +112,7 @@
                 
                 if (data.success) {
                     if (isLogin) {
+                        console.log("Neural Token Received. Length:", data.token.length);
                         localStorage.setItem('token', data.token);
                         window.location.href = '/chat';
                     } else {