fix: await searchParams and params for Next.js 15 async API, compute totalPages in all-users page

thoughts-frontend/app/thoughts/[thoughtId]/page.tsx

@@ -11,7 +11,7 @@ import { ThoughtThread } from "@/components/thought-thread";
 import { notFound } from "next/navigation";
 
 interface ThoughtPageProps {
-  params: { thoughtId: string };
+  params: Promise<{ thoughtId: string }>;
 }
 
 function collectAuthors(thread: ThoughtThreadType): string[] {
@@ -23,7 +23,7 @@ function collectAuthors(thread: ThoughtThreadType): string[] {
 }
 
 export default async function ThoughtPage({ params }: ThoughtPageProps) {
-  const { thoughtId } = params;
+  const { thoughtId } = await params;
   const token = (await cookies()).get("auth_token")?.value ?? null;
 
   const [threadResult, meResult] = await Promise.allSettled([