fix: update highlights API route params to Next.js 15 async format

app/api/highlights/[id]/route.ts

@@ -6,8 +6,9 @@ import { verifyToken } from '@/lib/auth'
 // DELETE /api/highlights/[id]?locale=en - Delete highlight
 export async function PUT(
   req: NextRequest,
-  { params }: { params: { id: string } }
+  context: { params: Promise<{ id: string }> }
 ) {
+  const params = await context.params
   try {
     const authHeader = req.headers.get('authorization')
     if (!authHeader) {
@@ -50,8 +51,9 @@ export async function PUT(
 
 export async function DELETE(
   req: NextRequest,
-  { params }: { params: { id: string } }
+  context: { params: Promise<{ id: string }> }
 ) {
+  const params = await context.params
   try {
     const authHeader = req.headers.get('authorization')
     if (!authHeader) {