Polish public error and 404 screens with brand atmosphere.

Shared ErrorScreen composition, i18n for en/nl/it, Sentry on route errors, and a self-contained global-error fallback that matches the hotel gold theme.

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

src/messages/en.json

@@ -40,6 +40,23 @@
 		"darkMode": "Dark mode"
 	},
 	"pages": {
+		"error": {
+			"code": "Error",
+			"title": "Something went wrong",
+			"subtitle": "The hotel hit an unexpected snag.",
+			"body": "Try again in a moment. If it keeps happening, contact staff with the reference below.",
+			"tryAgain": "Try again",
+			"backHome": "Back home",
+			"reference": "Reference: {digest}"
+		},
+		"notFound": {
+			"code": "404",
+			"title": "Page not found",
+			"subtitle": "This room doesn’t exist — or the furniture was moved.",
+			"body": "Check the link, or head back to the lobby.",
+			"backHome": "Back home",
+			"latestNews": "Latest news"
+		},
 		"staff": {
 			"title": "Staff",
 			"subtitle": "The team behind the hotel",