fix: await params in Next.js 16 routes and pages for TypeScript compatibility

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

@@ -12,7 +12,9 @@ interface PageProps {
 }
 
 export default async function EditTournamentPage({ params }: PageProps) {
-  const tournamentId = parseInt(params.id, 10)
+  // Next.js 16 requires awaiting params
+  const { id } = await params
+  const tournamentId = parseInt(id, 10)
   
   if (isNaN(tournamentId)) {
     notFound()

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

@@ -31,23 +31,41 @@ interface GameEntry {
   score2: number
 }
 
-export default function TournamentEntryPage({ params }: { params: { id: string } }) {
+export default function TournamentEntryPage({ params }: { params: Promise<{ id: string }> }) {
   const router = useRouter()
   const [tournament, setTournament] = useState<Tournament | null>(null)
+  const [tournamentId, setTournamentId] = useState<number | null>(null)
   const [gameText, setGameText] = useState("")
   const [parsedGames, setParsedGames] = useState<GameEntry[]>([])
   const [error, setError] = useState("")
   const [success, setSuccess] = useState("")
   const [isLoading, setIsLoading] = useState(false)
 
+  // Parse params and validate tournamentId
   useEffect(() => {
-    loadTournament()
+    async function parseParams() {
+      const { id } = await params
+      const parsedId = parseInt(id, 10)
+      if (isNaN(parsedId)) {
+        router.push('/admin/tournaments')
+      } else {
+        setTournamentId(parsedId)
+      }
+    }
+    parseParams()
+  }, [params, router])
+
+  // Load tournament when tournamentId is available
+  useEffect(() => {
+    if (tournamentId) {
+      loadTournament()
+    }
     // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [])
+  }, [tournamentId])
 
   const loadTournament = async () => {
     try {
-      const response = await fetch(`/api/tournaments/${params.id}`)
+      const response = await fetch(`/api/tournaments/${tournamentId}`)
       const data = await response.json()
       if (response.ok) {
         setTournament(data.tournament)
@@ -103,7 +121,7 @@ export default function TournamentEntryPage({ params }: { params: { id: string }
     setIsLoading(true)
 
     try {
-      const response = await fetch(`/api/tournaments/${params.id}/games/bulk`, {
+      const response = await fetch(`/api/tournaments/${tournamentId}/games/bulk`, {
         method: "POST",
         headers: {
           "Content-Type": "application/json",
@@ -154,7 +172,7 @@ export default function TournamentEntryPage({ params }: { params: { id: string }
         <div className="px-4 py-6 sm:px-0">
           <div className="mb-6">
             <button
-              onClick={() => router.push(`/admin/tournaments/${params.id}`)}
+              onClick={() => router.push(`/admin/tournaments/${tournamentId}`)}
               className="text-green-600 hover:text-green-800 mb-4"
             >
               ← Back to Tournament
@@ -281,7 +299,7 @@ export default function TournamentEntryPage({ params }: { params: { id: string }
 
                 <div className="flex justify-end space-x-3">
                   <button
-                    onClick={() => router.push(`/admin/tournaments/${params.id}`)}
+              onClick={() => router.push(`/admin/tournaments/${tournamentId}`)}
                     className="px-4 py-2 border border-gray-300 rounded-md shadow-sm text-sm font-medium text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-green-500"
                   >
                     Cancel

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

@@ -13,7 +13,9 @@ interface PageProps {
 }
 
 export default async function TournamentDetailPage({ params }: PageProps) {
-  const tournamentId = parseInt(params.id, 10)
+  // Next.js 16 requires awaiting params
+  const { id } = await params
+  const tournamentId = parseInt(id, 10)
   
   if (isNaN(tournamentId)) {
     notFound()

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

@@ -12,7 +12,9 @@ interface PageProps {
 }
 
 export default async function TournamentResultsPage({ params }: PageProps) {
-  const tournamentId = parseInt(params.id, 10)
+  // Next.js 16 requires awaiting params
+  const { id } = await params
+  const tournamentId = parseInt(id, 10)
   
   if (isNaN(tournamentId)) {
     notFound()