debug: add detailed logging for Chutes API calls

- Log API key prefix to verify key is loaded
- Log full error response from Chutes API
- Log success count when models are fetched

chat/server.js

@@ -7997,17 +7997,31 @@ async function fetchNvidiaModels() {
 
 // Fetch models from Chutes API when API key is configured
 async function fetchChutesModels() {
-  if (!CHUTES_API_KEY) return [];
+  if (!CHUTES_API_KEY) {
+    log('Chutes API key not configured');
+    return [];
+  }
   try {
+    log('Fetching Chutes models', { 
+      url: `${CHUTES_API_URL}/models`,
+      keyPrefix: CHUTES_API_KEY.substring(0, 8) + '...'
+    });
     const res = await fetch(`${CHUTES_API_URL}/models`, {
       headers: { 'Authorization': `Bearer ${CHUTES_API_KEY}` }
     });
     if (!res.ok) {
-      log('Chutes models fetch failed', { status: res.status });
+      const errorText = await res.text().catch(() => '');
+      log('Chutes models fetch failed', { 
+        status: res.status, 
+        statusText: res.statusText,
+        error: errorText.substring(0, 200),
+        keyPrefix: CHUTES_API_KEY.substring(0, 8) + '...'
+      });
       return [];
     }
     const data = await res.json();
     const models = Array.isArray(data?.data) ? data.data : [];
+    log('Chutes models fetched successfully', { count: models.length });
     return models.map((m) => ({
       name: m.id || m.name,
       label: `${m.id || m.name} (Chutes)`,