fix: resolve lint errors from ACL/admin implementation

- Remove unused requireOwnerOrAdmin import from videos.ts
- Remove unused requireAuth import from users.ts
- Remove unused GraphQLError import from articles.ts
- Replace URLSearchParams with SvelteURLSearchParams in admin users page
- Apply prettier formatting to all changed files

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/frontend/src/routes/sitemap.xml/+server.ts

@@ -7,7 +7,9 @@ export const GET = async () => {
     excludeRoutePatterns: ["^/signup/verify", "^/password/reset", "^/me", "^/play", "^/tags/.+"],
     paramValues: {
       "/magazine/[slug]": (await getArticles(fetch)).map((a) => a.slug),
-      "/models/[slug]": (await getModels(fetch)).map((a) => a.slug).filter((s): s is string => s !== null),
+      "/models/[slug]": (await getModels(fetch))
+        .map((a) => a.slug)
+        .filter((s): s is string => s !== null),
       "/videos/[slug]": (await getVideos(fetch)).map((a) => a.slug),
     },
     defaultChangefreq: "always",