refactor: split explain hall entry from home tab

src/pages/index/index.vue

@@ -247,16 +247,10 @@
     <view v-else-if="currentTab === 'explain'" class="explain-page">
       <ExplainHallSelect
         :halls="explainHallItems"
-        :business-units="explainBusinessUnitItems"
-        :guide-stops="explainGuideStopItems"
-        :stage="explainStage"
-        :selected-hall-name="selectedExplainHallName"
-        :selected-business-unit-name="selectedExplainBusinessUnitName"
+        stage="hall"
         :loading="explainLoading"
         :error="explainError"
         @hall-click="handleExplainHallClick"
-        @business-unit-click="handleExplainBusinessUnitClick"
-        @guide-stop-click="handleExplainGuideStopClick"
         @back="handleExplainBack"
       />
     </view>
@@ -317,9 +311,6 @@ import type {
   RoutePointOption
 } from '@/components/navigation/RoutePointPicker.vue'
 import ExplainHallSelect, {
-  type ExplainBusinessUnitSelectItem,
-  type ExplainGuideStopSelectItem,
-  type ExplainSelectStage,
   type ExplainHallSelectItem
 } from '@/components/explain/ExplainHallSelect.vue'
 import {
@@ -350,7 +341,6 @@ import {
 import type {
   GuideRouteResult,
   GuideRouteTarget,
-  ExplainBusinessUnit,
   MuseumFloor,
   MuseumHall
 } from '@/domain/museum'
@@ -749,48 +739,10 @@ const routeSimulationStepText = computed(() => {
 })
 
 const explainHallItems = ref<ExplainHallSelectItem[]>([])
-const explainBusinessUnits = ref<ExplainBusinessUnit[]>([])
-const explainStage = ref<ExplainSelectStage>('hall')
-const selectedExplainHallId = ref('')
-const selectedExplainHallName = ref('')
-const selectedExplainBusinessUnitId = ref('')
-const selectedExplainBusinessUnitName = ref('')
 const explainLoading = ref(false)
 const explainError = ref('')
 let explainLoadPromise: Promise<void> | null = null
 
-const selectedExplainBusinessUnit = computed(() => (
-  explainBusinessUnits.value.find((unit) => unit.id === selectedExplainBusinessUnitId.value) || null
-))
-const explainBusinessUnitItems = computed<ExplainBusinessUnitSelectItem[]>(() => (
-  explainBusinessUnits.value.map((unit) => ({
-    id: unit.id,
-    name: unit.name,
-    hallId: unit.hallId,
-    previewImageUrl: unit.previewImageUrl,
-    guideStopCount: unit.guideStopCount
-  }))
-))
-const explainGuideStopItems = computed<ExplainGuideStopSelectItem[]>(() => (
-  selectedExplainBusinessUnit.value?.stops.map((stop) => ({
-    id: stop.id,
-    name: stop.name,
-    hallId: stop.hallId,
-    hallName: stop.hallName,
-    floorId: stop.floorId,
-    poiId: stop.poiId,
-    mapX: stop.mapX,
-    mapY: stop.mapY,
-    coverImageUrl: stop.coverImageUrl,
-    description: stop.description,
-    hasAudio: stop.hasAudio,
-    audioStatus: stop.audioStatus,
-    guideLevel: stop.guideLevel,
-    playTargetType: stop.playTargetType,
-    playTargetId: stop.playTargetId
-  })) || []
-))
-
 // Tab 切换处理
 const syncTopTabToUrl = (tabId: GuideTopTab) => {
   if (typeof window === 'undefined') return
@@ -1456,71 +1408,17 @@ const guideSearchText = computed(() => {
 // 讲解页面处理
 const handleExplainHallClick = async (hallId: string) => {
   const hall = explainHallItems.value.find((item) => item.id === hallId)
-  selectedExplainHallId.value = hallId
-  selectedExplainHallName.value = hall?.name || '业务单元'
-  selectedExplainBusinessUnitId.value = ''
-  selectedExplainBusinessUnitName.value = ''
-  explainBusinessUnits.value = []
-  explainError.value = ''
-  explainLoading.value = true
-
-  try {
-    explainBusinessUnits.value = await explainUseCase.loadTemporaryBusinessUnitsByHall(hallId)
-    explainStage.value = 'unit'
-  } catch (error) {
-    console.error('加载展厅讲解点失败:', error)
-    explainError.value = '展厅讲解点加载失败，请稍后重试'
-    explainStage.value = 'unit'
-  } finally {
-    explainLoading.value = false
-  }
-}
-
-const handleExplainBusinessUnitClick = (unitId: string) => {
-  const unit = explainBusinessUnits.value.find((item) => item.id === unitId)
-  selectedExplainBusinessUnitId.value = unitId
-  selectedExplainBusinessUnitName.value = unit?.name || '讲解点'
-  explainStage.value = 'stop'
-}
-
-const handleExplainGuideStopClick = (stop: ExplainGuideStopSelectItem) => {
-  const target = stop.playTargetType && stop.playTargetId
-    ? {
-      targetType: stop.playTargetType,
-      targetId: stop.playTargetId
-    }
-    : normalizeExplainDetailTargetFromGuideStop({ id: stop.id })
   const params = new URLSearchParams({
-    id: stop.id,
-    tab: 'explain',
-    targetType: target.targetType,
-    targetId: target.targetId
+    hallId,
+    hallName: hall?.name || '讲解'
   })
+
   uni.navigateTo({
-    url: `/pages/exhibit/detail?${params.toString()}`
+    url: `/pages/explain/business-unit-list?${params.toString()}`
   })
 }
 
 const handleExplainBack = () => {
-  if (explainStage.value === 'stop') {
-    explainStage.value = 'unit'
-    selectedExplainBusinessUnitId.value = ''
-    selectedExplainBusinessUnitName.value = ''
-    explainError.value = ''
-    return
-  }
-
-  if (explainStage.value === 'unit') {
-    explainStage.value = 'hall'
-    selectedExplainHallId.value = ''
-    selectedExplainHallName.value = ''
-    selectedExplainBusinessUnitId.value = ''
-    selectedExplainBusinessUnitName.value = ''
-    explainBusinessUnits.value = []
-    explainError.value = ''
-    return
-  }
-
   currentTab.value = 'guide'
   syncTopTabToUrl('guide')
   loadTopTabData('guide')