fix fetch data in signal page and the backtest export excel issue

templates/index.html

@@ -255,7 +255,9 @@
                 // --- 3. Construct Row ---
                 htmlContent += `
                     <tr>
-                        <td>${item.symbol}</td>
+                        <td>
+                            <div class="fw-bold">${item.name || item.symbol}</div>                            
+                        </td>
                         <td><span class="${dateStyle}" style="font-size: 0.75rem; padding: 2px 5px; border-radius: 4px;">${displayDate}</span></td>
                         <td class="fw-bold">${item.last_close}</td>
                         <td class="${item.change_pct >= 0 ? 'text-up' : 'text-down'}">
@@ -330,7 +332,7 @@
         }
     }
 
-    setInterval(checkStatus, 30000); 
+    setInterval(checkStatus, 300000); 
     checkStatus(); // Initial check
 
     // --- 5. Initial Load ---