fix: resolve syntax error in App.svelte

Fixed TypeScript compilation error caused by import statement and function declaration being on the same line.

Changes:
- Separated import statement and onMount declaration onto different lines
- Resolved svelte-preprocess type error
- File now compiles correctly

This was a typo from previous commit where the loc import line was incorrectly merged with the existing onMount function declaration.

frontend/src/App.svelte

@@ -24,7 +24,8 @@
     GetMyAnimeList,
     SimklGetUserWatchlist,
   } from "../wailsjs/go/main/App";
-  import { loc } from "svelte-spa-router";  onMount(async () => {
+  import { loc } from "svelte-spa-router";
+
   onMount(async () => {
     let isAniListLoggedIn: boolean;
     let isMALLoggedIn: boolean;