Sync stage and rail ambient media

src/entities/service/media.ts

@@ -0,0 +1,11 @@
+import type { LauncherServiceView, MediaKind } from "./types";
+
+export const DEFAULT_AMBIENT_MEDIA = "/storage/default.gif";
+export const DEFAULT_AMBIENT_MEDIA_KIND: MediaKind = "gif";
+
+export function resolveAmbientMedia(service?: LauncherServiceView): { src: string; kind: MediaKind } {
+  return {
+    src: service?.media.ambientVideo ?? DEFAULT_AMBIENT_MEDIA,
+    kind: service?.media.ambientKind ?? DEFAULT_AMBIENT_MEDIA_KIND,
+  };
+}