新增首页前置加载页并等待模型就绪

src/components/navigation/GuideMapShell.vue

@@ -26,6 +26,8 @@
           @selection-clear="handleSelectionClear"
           @target-focus="handleTargetFocus"
           @auto-switch="handleAutoSwitch"
+          @initial-model-ready="handleInitialModelReady"
+          @initial-model-failed="handleInitialModelFailed"
         />
         <!-- #endif -->
         <!-- #ifndef H5 -->
@@ -401,6 +403,8 @@ const emit = defineEmits<{
   selectionClear: []
   targetFocus: [result: TargetPoiFocusResult]
   autoSwitch: [event: { from: 'overview' | 'floor'; to: 'overview' | 'floor'; trigger: string; distance: number }]
+  initialModelReady: [event: { view: IndoorViewMode; floorId?: string; elapsedMs?: number }]
+  initialModelFailed: [event: { view: IndoorViewMode; floorId?: string; message: string; elapsedMs?: number }]
   mapTap: [location: { latitude: number; longitude: number }]
 }>()
 
@@ -706,6 +710,14 @@ const handleAutoSwitch = (event: { from: 'overview' | 'floor'; to: 'overview' |
   emit('autoSwitch', event)
 }
 
+const handleInitialModelReady = (event: { view: IndoorViewMode; floorId?: string; elapsedMs?: number }) => {
+  emit('initialModelReady', event)
+}
+
+const handleInitialModelFailed = (event: { view: IndoorViewMode; floorId?: string; message: string; elapsedMs?: number }) => {
+  emit('initialModelFailed', event)
+}
+
 const handleMapTap = (location: { latitude?: number; longitude?: number }) => {
   const { latitude, longitude } = location
   if (latitude !== undefined && longitude !== undefined) {