audit fix and code stability improvement

src/sal/dell_xps_9380.rs

@@ -108,7 +108,6 @@ impl PreflightAuditor for DellXps9380Sal {
             }
         });
 
-        // Tool availability check
         let tool_check = self.fact_sheet.paths.tools.contains_key("dell_fan_ctrl");
         steps.push(AuditStep {
             description: "Dell Fan Control Tool".to_string(),
@@ -125,6 +124,7 @@ impl EnvironmentGuard for DellXps9380Sal {
         let mut suppressed = self.suppressed_services.lock().unwrap();
         for s in services {
             if Command::new("systemctl").args(["is-active", "--quiet", s]).status()?.success() {
+                debug!("Suppressing service: {}", s);
                 Command::new("systemctl").args(["stop", s]).status()?;
                 suppressed.push(s.to_string());
             }