iris: move text state into shared resources

app/src/desktop/app.rs

@@ -290,19 +290,19 @@ impl Client {
         let in_progress = self
             .screen
             .as_ref()
-            .map(|screen| screen.composer.field.edit(rsc).text.text().to_string())
+            .map(|screen| (screen.composer.field)(rsc).text().to_string())
             .filter(|t| !t.is_empty());
 
         let rows = group_tool_runs(&self.items);
         let (screen, tree) = crate::ui::build_tree(rsc, rows);
 
         if let Some(text) = in_progress {
-            screen.composer.field.edit(rsc).set(&text);
+            (screen.composer.field)(rsc).set(&text);
         }
         if let Some(session_id) = self.selected.clone() {
             let field = screen.composer.field;
             rsc.register_event(field, Submit, move |ctx, rsc| {
-                let text = field.edit(rsc).take();
+                let text = field(rsc).take();
                 let text = text.trim().to_string();
                 if !text.is_empty() {
                     ctx.state.send_message(session_id.clone(), text);