Add error handling for failed /proc/stat read in CPU usage script

Author: isontheline

_posts/2025-05-10-cpu-usage.md

@@ -73,6 +73,8 @@ script: |
 
     // Check if the command was successful
     if (!procStatContent) {
+      console.error('Failed to read /proc/stat');
+      // If the command fails, return empty label and default icon
       return { 
         label: '',
         icon: 'tachometer'