fix(avbeat): noStore() on homepage so hero actually re-renders

dynamic='force-dynamic' + revalidate=0 on the page weren't enough because
FeaturedBentoFromDb -> pickAds() -> fetch in src/lib/ads.ts:98 sets
next:{revalidate:30}. Next.js takes the lowest positive revalidate from
the render tree and opts the whole route into 30-second ISR (visible in
.next/prerender-manifest.json: '/' initialRevalidateSeconds: 30), masking
the page-level force-dynamic directive.

unstable_noStore() called at the top of the HomePage component body
forces an unambiguous, child-tree-overriding opt-out so the Telycam
hero swap (and any future DB-driven hero change) renders on every
request. lib/ads.ts caching is left alone — its revalidate is fine for
ad rotation; we just stop it from poisoning the page-level cache.

src/app/home-page/page.tsx

@@ -1,5 +1,6 @@
 import React, { Suspense } from "react";
 import type { Metadata } from "next";
+import { unstable_noStore as noStore } from "next/cache";
 import Header from "@/components/Header";
 import Footer from "@/components/Footer";
 import FeaturedBentoFromDb from '@/components/FeaturedBentoFromDb';
@@ -137,6 +138,14 @@ function FeedSkeleton() {
 }
 
 export default function HomePage() {
+  // Hard opt-out of all caching for this route. Without this, a child
+  // server component (FeaturedBentoFromDb -> pickAds -> fetch in lib/ads.ts
+  // with `next: { revalidate: 30 }`) pulls the whole page into 30-second
+  // ISR — Next.js takes the lowest positive revalidate it sees in the tree
+  // and ignores `dynamic = 'force-dynamic'` at the page level. noStore()
+  // is the unambiguous, child-tree-overriding opt-out and is what the
+  // hero swap needs to render fresh on every request.
+  noStore();
   return (
     <div className="min-h-screen bg-background">
       {/* Sticky top bar + nav */}