Remove RAM and Disk columns from services widget header

Changed header from 4 columns to 2 columns:
- Before: Service, Status, RAM, Disk
- After: Service, Status

Matches the removal of memory_mb and disk_gb fields.

dashboard/src/ui/widgets/services.rs

@@ -429,8 +429,8 @@ impl ServicesWidget {
 
         // Header
         let header = format!(
-            "{:<25} {:<10} {:<8} {:<8}",
-            "Service:", "Status:", "RAM:", "Disk:"
+            "{:<25} {:<10}",
+            "Service:", "Status:"
         );
         let header_para = Paragraph::new(header).style(Typography::muted());
         frame.render_widget(header_para, content_chunks[0]);