Feat: add icon and reorganize desktop.rs

src/settings.rs

@@ -101,7 +101,9 @@ impl Settings {
     }
 
     pub fn save(&self) {
-        let _ = confy::store(APP_NAME, None, self);
+        if let Err(e) = confy::store(APP_NAME, None, self) {
+            eprintln!("Failed to save settings: {e}");
+        }
     }
 }