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/admin/articles/new/+page.svelte

@@ -21,7 +21,7 @@
   let imageId = $state<string | null>(null);
   let saving = $state(false);
 
-  let preview = $derived(content ? marked.parse(content) as string : "");
+  let preview = $derived(content ? (marked.parse(content) as string) : "");
 
   function generateSlug(t: string) {
     return t
@@ -87,7 +87,9 @@
         <Input
           id="title"
           bind:value={title}
-          oninput={() => { if (!slug) slug = generateSlug(title); }}
+          oninput={() => {
+            if (!slug) slug = generateSlug(title);
+          }}
           placeholder="Article title"
         />
       </div>
@@ -125,11 +127,7 @@
 
     <div class="space-y-1.5">
       <Label>Cover image</Label>
-      <FileDropZone
-        accept="image/*"
-        maxFileSize={10 * MEGABYTE}
-        onUpload={handleImageUpload}
-      />
+      <FileDropZone accept="image/*" maxFileSize={10 * MEGABYTE} onUpload={handleImageUpload} />
       {#if imageId}<p class="text-xs text-green-600 mt-1">Image uploaded ✓</p>{/if}
     </div>