refac: chat navbar menu

src/lib/stores/index.ts

@@ -80,8 +80,10 @@ export const showOverview = writable(false);
 export const showArtifacts = writable(false);
 export const showCallOverlay = writable(false);
 
-export const embed = writable(null);
 export const artifactCode = writable(null);
+export const artifactContents = writable(null);
+
+export const embed = writable(null);
 
 export const temporaryChatEnabled = writable(false);
 export const scrollPaginationEnabled = writable(false);