同步移动端源码并修复小程序嵌入标题

src/components/map/WeakNetworkGuideFallback.vue

@@ -110,7 +110,7 @@
         >
           <view class="weak-network-marker-anchor">
             <svg class="weak-network-marker-anchor-icon" viewBox="0 0 32 32" aria-hidden="true">
-              <use :href="marker.iconHref"></use>
+              <use :href="marker.iconHref" :xlink:href="marker.iconHref"></use>
             </svg>
           </view>
           <view
@@ -119,7 +119,7 @@
             :data-testid="`weak-network-marker-label-${marker.poi.id}`"
           >
             <svg class="weak-network-marker-label-icon" viewBox="0 0 32 32" aria-hidden="true">
-              <use :href="marker.iconHref"></use>
+              <use :href="marker.iconHref" :xlink:href="marker.iconHref"></use>
             </svg>
             <text class="weak-network-marker-label-title">{{ marker.label }}</text>
           </view>
@@ -153,7 +153,12 @@ import {
   type AmbientFacilityKind,
   type PoiDisplayPolicy
 } from '@/domain/poiDisplay'
-import { getPoiIconHref, resolvePoiIconKey, type PoiIconKey } from '@/domain/poiCategories'
+import {
+  ensurePoiIconSprite,
+  getPoiIconHref,
+  resolvePoiIconKey,
+  type PoiIconKey
+} from '@/domain/poiCategories'
 import {
   getOverviewMapLabelDefinition,
   OVERVIEW_MAP_LABEL_DEFINITIONS
@@ -239,6 +244,10 @@ type SceneView = 'overview' | 'floor'
 const MAX_WEAK_MAP_MARKERS = 72
 const DEFAULT_VIEWPORT_WIDTH = 390
 const DEFAULT_VIEWPORT_HEIGHT = 844
+// Exterior WebP maps have a deliberately compact zoom-out range. Reserve the
+// final step for the semantic handoff so one accidental zoom-out does not
+// immediately replace the indoor exterior with Tencent Map.
+const OUTDOOR_MAP_EXIT_VISIBLE_SPAN_RATIO = 0.975
 const ROUTE_START_SNAP_RADIUS_PX = 44
 const ROUTE_NAVIGATION_ENTRY_MS = 460
 const MIN_ROUTE_SEGMENT_DURATION_MS = 6000
@@ -307,6 +316,7 @@ const emit = defineEmits<{
     boundaryAttempt: boolean
     referenceVisibleWorldSpan: number | null
     thresholdReached: boolean
+    outdoorExitReached: boolean
     viewport: GuideViewportState
   }]
   viewportChange: [event: {
@@ -359,6 +369,7 @@ const updateSurfaceSize = () => {
 }
 
 onMounted(() => {
+  ensurePoiIconSprite()
   updateSurfaceSize()
   const surfaceElement = getSurfaceElement()
   if (typeof ResizeObserver !== 'undefined' && surfaceElement) {
@@ -861,6 +872,20 @@ const referenceVisibleWorldSpan = computed<number | null>(() => {
   return Number.isFinite(span) && span > 0 ? span : null
 })
 
+const hasReachedOutdoorMapExitBoundary = (viewport: GuideViewportState) => {
+  if (viewport.scene !== 'overview') return false
+
+  const maximumViewport = clampGuideViewport({
+    ...viewport,
+    visibleWorldSpan: Number.MAX_SAFE_INTEGER
+  }, activeWorldBounds.value, surfaceSize.value)
+  const maximumVisibleWorldSpan = maximumViewport.visibleWorldSpan
+
+  return Number.isFinite(maximumVisibleWorldSpan)
+    && maximumVisibleWorldSpan > 0
+    && viewport.visibleWorldSpan >= maximumVisibleWorldSpan * OUTDOOR_MAP_EXIT_VISIBLE_SPAN_RATIO
+}
+
 const poiVisibilityTier = computed(() => getPoiVisibilityTier(
   referenceVisibleWorldSpan.value
     ? (localViewport.value?.visibleWorldSpan || referenceVisibleWorldSpan.value)
@@ -1053,6 +1078,7 @@ const emitZoomIntent = (
       currentVisibleWorldSpan: viewport.visibleWorldSpan,
       referenceVisibleWorldSpan: referenceSpan
     }),
+    outdoorExitReached: direction === 'out' && hasReachedOutdoorMapExitBoundary(viewport),
     viewport
   })
 }