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)/help/[category]/page.tsx

@@ -5,7 +5,7 @@ import { ContentCard } from "@/components/public/ui";
 import { prisma } from "@/lib/prisma";
 import { sanitize } from "@/lib/sanitize";
 import { SanitizedHtml } from "@/components/shared/sanitized-html";
-import { siteSettings } from "@/lib/services/site-settings";
+import { resolveHotelName } from "@/lib/hotel-name";
 
 export const revalidate = 300;
 
@@ -75,7 +75,7 @@ export default async function HelpCategoryPage({
 
 	if (!cat) notFound();
 
-	const hotelName = (await siteSettings.get("hotel_name", "Atom")) ?? "Atom";
+	const hotelName = await resolveHotelName();
 
 	// Sibling help topics, so the reader can jump between categories. Isolated
 	// query: a DB hiccup degrades this list to empty rather than 500-ing.