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/backend/src/graphql/resolvers/videos.ts

@@ -15,7 +15,7 @@ import {
   files,
 } from "../../db/schema/index";
 import { eq, and, lte, desc, inArray, count } from "drizzle-orm";
-import { requireRole, requireOwnerOrAdmin } from "../../lib/acl";
+import { requireRole } from "../../lib/acl";
 
 async function enrichVideo(db: any, video: any) {
   // Fetch models
@@ -433,10 +433,7 @@ builder.queryField("adminListVideos", (t) =>
     type: [VideoType],
     resolve: async (_root, _args, ctx) => {
       requireRole(ctx, "admin");
-      const rows = await ctx.db
-        .select()
-        .from(videos)
-        .orderBy(desc(videos.upload_date));
+      const rows = await ctx.db.select().from(videos).orderBy(desc(videos.upload_date));
       return Promise.all(rows.map((v: any) => enrichVideo(ctx.db, v)));
     },
   }),