feat: display other image missing errors

src/main.rs

@@ -81,21 +81,25 @@ impl State {
                 }
 
                 Key::Character("r") => {
-                    let Some(image) = self.image.as_ref() else {
-                        eprintln!("no image to rotate");
-                        return Task::none();
-                    };
+                    match self.image.as_ref() {
+                        None => self.error = Some("no image to rotate".into()),
+                        Some(image) => {
+                            self.error = None;
                             self.image = Some(imageops::rotate90(image));
                             return self.allocate_image();
                         }
-                Key::Character("i") => {
-                    let Some(image) = self.image.as_mut() else {
-                        eprintln!("no image to invert");
-                        return Task::none();
                     };
+                }
+                Key::Character("i") => {
+                    match self.image.as_mut() {
+                        None => self.error = Some("no image to invert".into()),
+                        Some(image) => {
+                            self.error = None;
                             imageops::invert(image);
                             return self.allocate_image();
                         }
+                    };
+                }
 
                 Key::Character("s") => {
                     self.error = self.save_image();
@@ -141,7 +145,9 @@ impl State {
                             path.display()
                         ));
                     }
-                    Err(e) => return Some(format!("faled to decode '{}' {e}", path.display())),
+                    Err(e) => {
+                        return Some(format!("failed to decode jxl '{}': {e}", path.display()));
+                    }
                 }
             }