refactor(app): better error handling

src/main.rs

@@ -45,6 +45,12 @@ fn main() {
         Box::new(system_monitor_adapter),
         Box::new(formatter),
     );
-    service.alert_on_threshold_violation();
-    service.send_all_metrics_notification();
+    
+    if let Err(e) = service.alert_on_threshold_violation() {
+        eprintln!("Error during threshold violation check: {}", e);
+    }
+    
+    if let Err(e) = service.send_all_metrics_notification() {
+        eprintln!("Error sending final notification: {}", e);
+    }
 }