Adapt mounted canvas tests to installed renderer and workflow APIs

crates/oa-desktop/src/behavior/canvas_workspace/tests.rs

@@ -265,7 +265,8 @@ impl Mounted {
             mouse::Cursor::Unavailable,
         );
         self.cache = ui.into_cache();
-        self.renderer.screenshot(
+        Headless::screenshot(
+            &mut self.renderer,
             Size::new(app.window_size.width as u32, app.window_size.height as u32),
             1.,
             crate::style::BG,

crates/oa-desktop/src/behavior/topology/layout_tests.rs

@@ -723,7 +723,7 @@ async fn production_canvas_keyboard_and_delayed_tasks_respect_real_chooser_and_r
             panic!("actual Review dialog opens");
         };
         let message = state.address_event(row);
-        let task = app.update(Message::Workflow(crate::workflow::Event::Semantic(message)));
+        let task = app.update(Message::Workflow(crate::workflow::Event::semantic(message)));
         mounted.perform(&mut app, task).await;
     }
     let Some(crate::workflow::Workflow::Semantic(state)) = app.workflow.as_ref() else {