Simplify Iris app initialization and task updates

app/examples/phone.rs

@@ -52,7 +52,7 @@ impl DesktopAppState for Client {
             ))
     }
 
-    fn new(mut ui_state: DesktopUiState, rsc: &mut StdRsc<Self>, _: Proxy<Self::Event>) -> Self {
+    fn new(mut ui_state: DesktopUiState, rsc: &mut StdRsc<Self>) -> Self {
         let screen = match ai_app::ui::fixture::open(rsc, &mut ui_state) {
             Ok(opened) => {
                 if let Some(message) = message_argv() {
@@ -60,7 +60,6 @@ impl DesktopAppState for Client {
                 }
                 if let Some(text) = typed_argv() {
                     let field = opened.screen.composer.field;
-                    let redraw = rsc.tasks.redraw_handle();
                     rsc.spawn_task(async move |mut ctx| {
                         for ch in text.chars() {
                             tokio::time::sleep(std::time::Duration::from_millis(100)).await;
@@ -73,7 +72,6 @@ impl DesktopAppState for Client {
                                 }
                                 edit.insert(&ch.to_string());
                             });
-                            redraw.request_redraw();
                         }
                     });
                 }