feat(docker): prepare portable images with runtime hotel configuration

src/app/manifest.ts

@@ -2,6 +2,9 @@ import type { MetadataRoute } from "next";
 import { resolveHotelName } from "@/lib/hotel-name";
 import { siteSettings } from "@/lib/services/site-settings";
 
+// Installation metadata must be resolved from the running container.
+export const dynamic = "force-dynamic";
+
 // Web app manifest — makes the hotel installable as a PWA (AtomCMS exposed PWA
 // settings but the rewrite ships a real, themeable manifest). Name + theme
 // colour follow the live website_settings; falls back to defaults with no DB.