fix: remove duplicate tournament variable definitions in admin pages

src/app/admin/tournaments/[id]/results/page.tsx

@@ -2,7 +2,7 @@ import { prisma } from "@/lib/prisma"
 import Navigation from "@/components/Navigation"
 import Link from "next/link"
 import { notFound, redirect } from "next/navigation"
-import { getSession } from "@/lib/auth-simple"
+import { canManageTournament } from "@/lib/permissions"
 import MatchEditor from "@/components/MatchEditor"
 
 interface PageProps {
@@ -12,14 +12,14 @@ interface PageProps {
 }
 
 export default async function TournamentResultsPage({ params }: PageProps) {
-  const session = await getSession()
-
-  if (!session || session.user?.role !== "club_admin") {
+  const tournamentId = parseInt(params.id)
+  
+  // Check if user can manage this tournament
+  const permission = await canManageTournament(tournamentId)
+  if (!permission.allowed) {
     redirect("/auth/login")
   }
 
-  const tournamentId = parseInt(params.id)
-
   const tournament = await prisma.event.findUnique({
     where: { id: tournamentId },
   })