refactor: resolve hotel name directly from HOTEL_NAME env

resolveHotelName() now returns env.HOTEL_NAME directly — the single source
of truth. The CMS hotel_name site setting and its DEFAULTS entry are removed
as dead code since they no longer influence the displayed name.

Call sites are unchanged (still await resolveHotelName()); only the lookup
behind it is gone, so the public site always shows the configured env name
with no DB round-trip and no preset.

src/lib/hotel-name.ts

@@ -1,16 +1,12 @@
 import "server-only";
 
 import { env } from "@/env";
-import { siteSettings } from "@/lib/services/site-settings";
 
 /**
- * Resolve the public hotel name: CMS `hotel_name` setting, falling back to the
- * required HOTEL_NAME env var. There is no hardcoded preset — the site must be
- * configured, otherwise HOTEL_NAME fails validation at startup.
+ * The public hotel name is read directly from the required HOTEL_NAME env var.
+ * There is no CMS override or hardcoded preset — the site must be configured,
+ * otherwise HOTEL_NAME fails validation at startup.
  */
 export async function resolveHotelName(): Promise<string> {
-	const fromSettings = (
-		await siteSettings.get("hotel_name", env.HOTEL_NAME)
-	)?.trim();
-	return fromSettings || env.HOTEL_NAME;
+	return env.HOTEL_NAME;
 }