feat(home): intro + outro animations

app/components/Home/BottomScreen/Background.vue

@@ -1,9 +1,12 @@
 <script setup lang="ts">
+const store = useHomeStore();
+
 const backgroundImage = useTemplateRef("backgroundImage");
 
 useRender((ctx) => {
   if (!backgroundImage.value) return;
 
+  ctx.globalAlpha = store.intro.stage1Opacity;
   ctx.drawImage(backgroundImage.value, 0, 0);
 });
 </script>