refactor: centralize hotel name fallback via FALLBACK_HOTEL_NAME

Route all user-facing Atom hotel defaults through resolveHotelName (settings then HOTEL_NAME env then brand constant). Exclude Playwright e2e from tsconfig until deps are installed.

Co-authored-by: Cursor <[email protected]>

src/app/(site)/maintenance/page.tsx

@@ -1,5 +1,6 @@
 import { getTranslations } from "next-intl/server";
 import { ContentCard } from "@/components/public/ui";
+import { resolveHotelName } from "@/lib/hotel-name";
 import { siteSettings } from "@/lib/services/site-settings";
 
 export const revalidate = 300;
@@ -7,7 +8,7 @@ export const revalidate = 300;
 export default async function MaintenancePage() {
 	const t = await getTranslations("pages.maintenance");
 	const [hotel, message] = await Promise.all([
-		siteSettings.get("hotel_name", "Atom"),
+		resolveHotelName(),
 		siteSettings.get(
 			"maintenance_message",
 			"We are currently performing maintenance. Please check back soon.",
@@ -18,7 +19,7 @@ export default async function MaintenancePage() {
 		<main style={{ maxWidth: 560, margin: "2rem auto" }}>
 			<ContentCard
 				icon="🛠️"
-				title={t("title", { hotel: hotel ?? "Atom" })}
+				title={t("title", { hotel })}
 				subtitle={t("subtitle")}
 			>
 				<p style={{ marginTop: 0 }}>{message}</p>