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/lib/logger.ts

@@ -26,7 +26,17 @@ function createLogger(bindings: Record<string, unknown> = {}, initialLevel: LogL
       message = arg;
     } else if (arg !== null && typeof arg === "object") {
       // Pino-style: log(obj, msg?) — strip internal pino keys
-      const { msg: m, level: _l, time: _t, pid: _p, hostname: _h, req: _req, res: _res, reqId, ...rest } = arg as Record<string, unknown>;
+      const {
+        msg: m,
+        level: _l,
+        time: _t,
+        pid: _p,
+        hostname: _h,
+        req: _req,
+        res: _res,
+        reqId,
+        ...rest
+      } = arg as Record<string, unknown>;
       message = msg || (typeof m === "string" ? m : "");
       if (reqId) meta.reqId = reqId;
       Object.assign(meta, rest);