fix: update element import in Rust bridge for consistency

bridge/src/lib.rs

@@ -10,7 +10,7 @@ use glam::Mat4;
 use stardust_xr_asteroids as ast; // alias for brevity
 use stardust_xr_asteroids::{
     client::ClientState,
-    elements::{PlaySpace, Spatial, Lines},
+    elements::{PlaySpace, Spatial, Model},
     Migrate, Reify, CustomElement, Projector, Context,
 };
 use stardust_xr_molecules::accent_color::AccentColor;
@@ -18,6 +18,7 @@ use stardust_xr_fusion::objects::connect_client as fusion_connect_client;
 use stardust_xr_fusion::node::NodeType;
 use stardust_xr_fusion::root::RootAspect;
 use tokio::runtime::Runtime;
+use std::path::PathBuf;
 
 #[derive(Clone, serde::Serialize, serde::Deserialize)]
 struct BridgeState {