Use direct smartctl with CAP_SYS_RAWIO instead of sudo

agent/src/collectors/disk.rs

@@ -426,8 +426,9 @@ impl DiskCollector {
     async fn get_smart_data(&self, drive_name: &str) -> Result<SmartData, CollectorError> {
         use tracing::info;
 
-        let output = Command::new("sudo")
-            .args(&["smartctl", "-a", &format!("/dev/{}", drive_name)])
+        // Use direct smartctl (no sudo) - service has CAP_SYS_RAWIO capability
+        let output = Command::new("smartctl")
+            .args(&["-a", &format!("/dev/{}", drive_name)])
             .output()
             .map_err(|e| CollectorError::SystemRead {
                 path: format!("SMART data for {}", drive_name),