chore: freeze guide and explain update

src/domain/guideReadiness.ts

@@ -1,11 +1,15 @@
+import type {
+  GuideRouteReadiness
+} from '@/domain/museum'
+
 export const NAV_ROUTE_GRAPH_READY = false
 
-export const NAV_ROUTE_UNAVAILABLE_MESSAGE = '正式路线数据尚未接入，可先查看馆内三维位置'
+export const NAV_ROUTE_UNAVAILABLE_MESSAGE = '当前支持位置预览、三维位置预览与室外入口参考'
 
-export const NAV_ROUTE_READINESS = {
+export const NAV_ROUTE_READINESS: GuideRouteReadiness = {
   ready: NAV_ROUTE_GRAPH_READY,
   message: NAV_ROUTE_UNAVAILABLE_MESSAGE,
   requiredData: ['route_graph', 'nav_data']
-} as const
+}
 
-export const NAV_ASSET_BASE_URL = '/static/nav-assets/app_nav_assets_v2_clean_20260611_093623'
+export const NAV_ASSET_BASE_URL = '/static/nav-assets/codex_nav_20260621_175310_museum_default_centerline_finalxy'