优化界面布局

public/js/utils.js

@@ -28,6 +28,15 @@ function formatBandwidth(bytesPerSec, decimals = 2) {
   return value.toFixed(decimals) + ' ' + sizes[i];
 }
 
+/**
+ * Convert bytes per second to MB/s (numeric string)
+ */
+function toMBps(bytesPerSec, decimals = 2) {
+  if (!bytesPerSec || bytesPerSec === 0) return '0.00';
+  const mbps = bytesPerSec / (1024 * 1024);
+  return mbps.toFixed(decimals);
+}
+
 /**
  * Format percentage
  */