Fix modelling regressions and reconcile WIP UI work

crates/ui-egui/src/scenario.rs

@@ -245,6 +245,15 @@ impl Harness {
     }
 
     pub fn call(&mut self, method: &str, params: Value) -> Value {
+        if method == "ui.resize"
+            && let (Some(w), Some(h)) = (params["width"].as_f64(), params["height"].as_f64())
+            && w.is_finite()
+            && h.is_finite()
+            && w > 0.0
+            && h > 0.0
+        {
+            self.size = egui::vec2(w as f32, h as f32);
+        }
         let (req, _rx) = ControlRequest::new(method, params);
         let out = match handle(&mut self.app, &self.ctx, &req) {
             Outcome::Done(v) => v,