Update guide presentation and route preview gating

src/usecases/guideRouteUseCase.ts

@@ -8,6 +8,9 @@ import {
   guideRouteRepository,
   type GuideRouteRepository
 } from '@/repositories/GuideRouteRepository'
+import {
+  applyRouteReadinessGate
+} from '@/domain/guideReadiness'
 
 const toSearchText = (target: GuideRouteTarget) => [
   target.name,
@@ -38,7 +41,7 @@ export class GuideRouteUseCase {
   async getRouteReadiness() {
     if (this.readinessCache) return this.readinessCache
 
-    this.readinessCache = await this.repository.getRouteReadiness()
+    this.readinessCache = applyRouteReadinessGate(await this.repository.getRouteReadiness())
     return this.readinessCache
   }
 
@@ -64,7 +67,7 @@ export class GuideRouteUseCase {
       if (!readiness.ready) {
         return {
           route: null,
-          error: readiness.message || '路线数据暂不可用'
+          error: readiness.message || '当前暂不支持正式导航，可查看位置预览和路线示意'
         }
       }
 

src/usecases/guideUseCase.ts

@@ -14,6 +14,7 @@ import {
   type GuideModelRepository
 } from '@/repositories/GuideModelRepository'
 import {
+  applyRouteReadinessGate,
   NAV_ROUTE_READINESS
 } from '@/domain/guideReadiness'
 
@@ -81,12 +82,12 @@ export class GuideUseCase {
 
     const routeReadiness = await this.guide.getRouteReadiness()
       .catch(() => NAV_ROUTE_READINESS)
-    this.routeReadinessCache = NAV_ROUTE_READINESS.ready ? routeReadiness : NAV_ROUTE_READINESS
+    this.routeReadinessCache = applyRouteReadinessGate(routeReadiness)
     return this.routeReadinessCache
   }
 
   getRouteReadinessSnapshot(): GuideRouteReadiness {
-    return this.routeReadinessCache || NAV_ROUTE_READINESS
+    return this.routeReadinessCache || applyRouteReadinessGate(NAV_ROUTE_READINESS)
   }
 
   getFloors() {