refactor: move SVGs and style.css to static/assets/ and update references

templates/components/footer.gohtml

@@ -2,7 +2,7 @@
 <footer class="mt-auto border-t border-border bg-background-sidebar py-8 px-6 md:px-12">
   <div class="flex flex-col items-center justify-between gap-6 sm:flex-row">
     <div class="flex items-center gap-3">
-      <img src="/static/readme-logo-light.svg" alt="MAL" class="h-6 w-6" />
+      <img src="/static/assets/readme-logo-light.svg" alt="MAL" class="h-6 w-6" />
       <span class="text-foreground-muted font-semibold text-lg tracking-tight">MyAnimeList</span>
     </div>
     <div class="flex items-center gap-6">