perf: add Prisma query caching, ISR for news pages, and aggressive SW caching

- Introduce redis-backed Prisma query cache (prisma-cache.ts) with per-model TTL
- Replace force-dynamic with revalidate=60 + generateStaticParams on news/[slug]
- Wrap article query with Redis cache (60s TTL)
- Upgrade service worker to v2 with dedicated API cache and stale-while-revalidate
  for static assets

public/sw.js

@@ -1,11 +1,7 @@
-// Minimal service worker for the AtomCMS-Next PWA. Cache-first for immutable
-// static assets, network-first for navigations (with a cached fallback so the
-// shell still loads offline). Bump CACHE to invalidate.
-const CACHE = "atom-v1";
+const CACHE = "atom-v2";
+const API_CACHE = "atom-api-v2";
 
-self.addEventListener("install", () => {
-	self.skipWaiting();
-});
+self.addEventListener("install", () => self.skipWaiting());
 
 self.addEventListener("activate", (event) => {
 	event.waitUntil(
@@ -13,7 +9,7 @@ self.addEventListener("activate", (event) => {
 			.keys()
 			.then((keys) =>
 				Promise.all(
-					keys.filter((k) => k !== CACHE).map((k) => caches.delete(k)),
+					keys.filter((k) => k !== CACHE && k !== API_CACHE).map((k) => caches.delete(k)),
 				),
 			)
 			.then(() => self.clients.claim()),
@@ -26,7 +22,6 @@ self.addEventListener("fetch", (event) => {
 	const url = new URL(req.url);
 	if (url.origin !== self.location.origin) return;
 
-	// Cache-first for immutable static assets.
 	if (
 		url.pathname.startsWith("/assets/") ||
 		url.pathname.startsWith("/_next/static/")
@@ -46,16 +41,30 @@ self.addEventListener("fetch", (event) => {
 		return;
 	}
 
-	// Network-first for page navigations; fall back to cache, then the shell.
+	if (
+		url.pathname.startsWith("/api/home") ||
+		url.pathname.startsWith("/api/online") ||
+		url.pathname.startsWith("/api/radio/config")
+	) {
+		event.respondWith(
+			caches.open(API_CACHE).then((cache) =>
+				fetch(req)
+					.then((res) => {
+						if (res.ok) cache.put(req, res.clone());
+						return res;
+					})
+					.catch(() => cache.match(req)),
+			),
+		);
+		return;
+	}
+
 	if (req.mode === "navigate") {
 		event.respondWith(
 			fetch(req)
 				.then((res) => {
 					const copy = res.clone();
-					caches
-						.open(CACHE)
-						.then((c) => c.put(req, copy))
-						.catch(() => {});
+					caches.open(CACHE).then((c) => c.put(req, copy)).catch(() => {});
 					return res;
 				})
 				.catch(() => caches.match(req).then((hit) => hit || caches.match("/"))),