fix: duplicate script setup + unused import

src/App.vue

@@ -1,5 +1,5 @@
 <script setup>
-import { NavigationModel, Nav } from "./components/Index.js";
+import { NavigationModel } from "./components/Index.js";
 
 </script>
 

src/views/muscles/Chest.vue

@@ -1,7 +1,3 @@
-<script setup>
-
-</script>
-
 <template>
   <div class="chest">
     <h1>Chest</h1>