讲解对象列表接入展厅分页接口

2026-07-17 18:27:24 +08:00
parent 7267dfcac1
commit cf6ad02318
18 changed files with 682 additions and 409 deletions
--- a/src/components/explain/ExplainHallSelect.vue
+++ b/src/components/explain/ExplainHallSelect.vue
@@ -12,10 +12,11 @@
      class="explain-scroll"
      :class="{
        'hall-stage': stage === 'hall',
-        'unit-stage': stage === 'unit',
        'stop-stage': stage === 'stop'
      }"
      scroll-y
+      @scroll="handleScroll"
+      @scrolltolower="handleScrollToLower"
      :show-scrollbar="false"
    >
      <view v-if="loading" class="state-block">
@@ -24,8 +25,9 @@
      </view>

      <view v-else-if="error" class="state-block error">
-        <text class="state-title">讲解内容加载失败</text>
+        <text class="state-title">讲解对象加载失败</text>
        <text class="state-desc">{{ error }}</text>
+        <button class="state-retry" @tap="emit('retry')">重新加载</button>
      </view>

      <template v-else>
@@ -75,31 +77,6 @@
          </view>
        </view>

-        <view v-else-if="stage === 'unit' && businessUnits.length" class="hall-list">
-          <view
-            v-for="unit in businessUnits"
-            :key="unit.id"
-            class="hall-card unit-card"
-            @tap="handleBusinessUnitClick(unit.id)"
-          >
-            <image
-              class="unit-thumb"
-              :src="unitPreviewImageUrl(unit)"
-              mode="aspectFill"
-              @error="handleUnitPreviewError(unit.id)"
-            />
-
-            <view class="hall-main">
-              <text class="hall-name">{{ unit.name }}</text>
-              <view class="hall-meta-row">
-                <text class="hall-meta-text">{{ unit.guideStopCount }} 个讲解</text>
-              </view>
-            </view>
-
-            <text class="hall-arrow">›</text>
-          </view>
-        </view>
-
        <view v-else-if="stage === 'stop' && guideStops.length" class="hall-list">
          <view
            v-for="stop in guideStops"
@@ -140,6 +117,14 @@
          <text class="state-title">{{ emptyTitle }}</text>
          <text class="state-desc">{{ emptyDescription }}</text>
        </view>
+        <view v-if="stage === 'stop' && guideStops.length" class="load-more-state">
+          <text v-if="loadingMore" class="state-desc">正在加载更多讲解对象</text>
+          <template v-else-if="loadMoreError">
+            <text class="state-desc">{{ loadMoreError }}</text>
+            <button class="state-retry" @tap="emit('retryMore')">重试加载更多</button>
+          </template>
+          <text v-else-if="!hasMore" class="state-desc">已加载全部讲解对象</text>
+        </view>
      </template>
    </scroll-view>
  </view>
@@ -147,9 +132,6 @@

 <script setup lang="ts">
 import { computed, ref } from 'vue'
-import {
-  EXPLAIN_UNIT_PREVIEW_FALLBACK
-} from '@/utils/explainUnitPreviews'
 import { isEmbeddedInWechatMiniProgram } from '@/utils/hostEnvironment'

 export interface ExplainHallSelectItem {
@@ -158,19 +140,10 @@ export interface ExplainHallSelectItem {
  floorLabel?: string
  image?: string
  explainCount: number
-  businessUnitCount?: number
  guideStopCount?: number
  searchText: string
 }

-export interface ExplainBusinessUnitSelectItem {
-  id: string
-  name: string
-  hallId: string
-  previewImageUrl?: string
-  guideStopCount: number
-}
-
 export interface ExplainGuideStopSelectItem {
  id: string
  name: string
@@ -189,40 +162,42 @@ export interface ExplainGuideStopSelectItem {
  playTargetId?: string
 }

-export type ExplainSelectStage = 'hall' | 'unit' | 'stop'
+export type ExplainSelectStage = 'hall' | 'stop'

 const props = withDefaults(defineProps<{
  halls?: ExplainHallSelectItem[]
-  businessUnits?: ExplainBusinessUnitSelectItem[]
  guideStops?: ExplainGuideStopSelectItem[]
  stage?: ExplainSelectStage
  selectedHallName?: string
-  selectedBusinessUnitName?: string
  loading?: boolean
+  loadingMore?: boolean
+  hasMore?: boolean
  error?: string
+  loadMoreError?: string
 }>(), {
  halls: () => [],
-  businessUnits: () => [],
  guideStops: () => [],
  stage: 'hall',
  selectedHallName: '',
-  selectedBusinessUnitName: '',
  loading: false,
-  error: ''
+  loadingMore: false,
+  hasMore: false,
+  error: '',
+  loadMoreError: ''
 })

 const emit = defineEmits<{
  hallClick: [hallId: string]
-  businessUnitClick: [unitId: string]
  guideStopClick: [stop: ExplainGuideStopSelectItem]
  back: []
+  retry: []
+  retryMore: []
 }>()

 const HALL_PREVIEW_BASE = '/static/explain/hall-previews'
 const HALL_PREVIEW_EAGER_COUNT = 4
 const loadedHallPreviewIds = ref(new Set<string>())
 const failedHallPreviewIds = ref(new Set<string>())
-const failedUnitPreviewIds = ref(new Set<string>())

 const hallPreviewMap: Record<string, string> = {
  宇宙厅: `${HALL_PREVIEW_BASE}/universe.webp`,
@@ -240,28 +215,23 @@ const filteredHalls = computed(() => props.halls)
 const shouldUseHostNavigation = computed(() => isEmbeddedInWechatMiniProgram())
 const showInternalHeader = computed(() => !shouldUseHostNavigation.value)
 const headerTitle = computed(() => {
-  if (props.stage === 'unit') return props.selectedHallName || '选择业务单元'
-  if (props.stage === 'stop') return props.selectedBusinessUnitName || '选择讲解点'
+  if (props.stage === 'stop') return props.selectedHallName || '讲解对象'
  return '讲解'
 })
 const loadingTitle = computed(() => {
-  if (props.stage === 'unit') return '正在加载业务单元'
-  if (props.stage === 'stop') return '正在加载讲解点'
+  if (props.stage === 'stop') return '正在加载讲解对象'
  return '正在加载展厅讲解'
 })
 const loadingDescription = computed(() => {
-  if (props.stage === 'unit') return '正在按讲解点所属 outline 分组生成临时业务单元。'
-  if (props.stage === 'stop') return '稍后将展示该业务单元下的讲解点。'
+  if (props.stage === 'stop') return '稍后将展示该展厅的讲解对象。'
  return '稍后将展示可选择的展厅。'
 })
 const emptyTitle = computed(() => {
-  if (props.stage === 'unit') return '该展厅暂无已标定讲解点'
-  if (props.stage === 'stop') return '该业务单元暂无讲解点'
+  if (props.stage === 'stop') return '该展厅暂无讲解对象'
  return '未找到相关展厅'
 })
 const emptyDescription = computed(() => {
-  if (props.stage === 'unit') return '方案 B 只展示已在地图上标定的讲解点。'
-  if (props.stage === 'stop') return '可返回选择其他业务单元。'
+  if (props.stage === 'stop') return '可返回选择其他展厅。'
  return '暂无可选择的展厅讲解。'
 })

@@ -295,19 +265,9 @@ const handleHallPreviewError = (hallId: string) => {
  }
 }

-const unitPreviewImageUrl = (unit: ExplainBusinessUnitSelectItem) => (
-  failedUnitPreviewIds.value.has(unit.id)
-    ? EXPLAIN_UNIT_PREVIEW_FALLBACK
-    : unit.previewImageUrl || EXPLAIN_UNIT_PREVIEW_FALLBACK
-)
-
-const handleUnitPreviewError = (unitId: string) => {
-  failedUnitPreviewIds.value = new Set([...failedUnitPreviewIds.value, unitId])
-}
-
 const hallMetaText = (hall: ExplainHallSelectItem) => (
-  typeof hall.businessUnitCount === 'number' || typeof hall.guideStopCount === 'number'
-    ? `${hall.businessUnitCount || 0} 个业务单元 · ${hall.guideStopCount || 0} 个讲解点`
+  typeof hall.guideStopCount === 'number'
+    ? `${hall.guideStopCount || 0} 个讲解对象`
    : hall.explainCount > 0 ? `${hall.explainCount} 个展项` : '展厅'
 )

@@ -315,10 +275,6 @@ const handleHallClick = (hallId: string) => {
  emit('hallClick', hallId)
 }

-const handleBusinessUnitClick = (unitId: string) => {
-  emit('businessUnitClick', unitId)
-}
-
 const handleGuideStopClick = (stopId: string) => {
  const stop = props.guideStops.find((item) => item.id === stopId)
  if (stop) {
@@ -326,6 +282,21 @@ const handleGuideStopClick = (stopId: string) => {
  }
 }

+const handleScrollToLower = () => {
+  requestMore()
+}
+
+const requestMore = () => {
+  if (props.stage === 'stop' && props.hasMore && !props.loading && !props.loadingMore && !props.loadMoreError) {
+    emit('retryMore')
+  }
+}
+
+const handleScroll = (event: Event) => {
+  const target = event.target as HTMLElement | null
+  if (target && target.scrollTop + target.clientHeight >= target.scrollHeight - 8) requestMore()
+}
+
 const handleBack = () => {
  emit('back')
 }
@@ -351,7 +322,6 @@ const handleBack = () => {
  overflow: hidden;
 }

-.explain-scroll.unit-stage,
 .explain-scroll.stop-stage {
  padding-bottom: 0;
 }
@@ -553,17 +523,6 @@ const handleBack = () => {
  color: #83927a;
 }

-.unit-thumb {
-  flex-shrink: 0;
-  width: 84px;
-  height: 58px;
-  border-radius: 8px;
-  background: #eef0e4;
-  border: 1px solid rgba(36, 49, 42, 0.06);
-  box-sizing: border-box;
-  object-fit: cover;
-}
-
 .hall-main {
  flex: 1;
  min-width: 0;
@@ -734,4 +693,21 @@ const handleBack = () => {
  border-color: #e5c2c2;
  background: #fff7f7;
 }
+
+.load-more-state {
+  min-height: 52px;
+  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
+  text-align: center;
+}
+
+.state-retry {
+  margin-top: 12px;
+  padding: 0 14px;
+  font-size: 13px;
+  line-height: 32px;
+  color: #151713;
+  background: #e0df00;
+  border: 0;
+  border-radius: 6px;
+}
 </style>
--- a/src/data/providers/backendExplainContentProvider.ts
+++ b/src/data/providers/backendExplainContentProvider.ts
@@ -1,6 +1,7 @@
 import type {
  ExplainBusinessUnit,
  ExplainGuideStop,
+  ExplainGuideStopPage,
  MuseumExhibit,
  MuseumHall
 } from '@/domain/museum'
@@ -84,6 +85,11 @@ interface TimedCacheEntry<T> {
  expiresAt: number
 }

+interface BackendCatalogStopPage {
+  list?: BackendCatalogStopItem[]
+  total?: number
+}
+
 const requireArrayData = <T>(response: CommonResult<T[]>, message: string) => {
  if (response.code !== 0) {
    throw new Error(response.msg || message)
@@ -92,6 +98,14 @@ const requireArrayData = <T>(response: CommonResult<T[]>, message: string) => {
  return Array.isArray(response.data) ? response.data : []
 }

+const requirePageData = (response: CommonResult<BackendCatalogStopPage>, message: string) => {
+  if (response.code !== 0) throw new Error(response.msg || message)
+  return {
+    list: Array.isArray(response.data?.list) ? response.data.list : [],
+    total: Math.max(0, Number(response.data?.total || 0))
+  }
+}
+
 export class BackendExplainContentProvider implements ExplainContentProvider {
  private readonly explainExhibitCache = new Map<string, TimedCacheEntry<MuseumExhibit[]>>()
  private readonly explainExhibitInflight = new Map<string, Promise<MuseumExhibit[]>>()
@@ -100,6 +114,8 @@ export class BackendExplainContentProvider implements ExplainContentProvider {
  private readonly hallListInflight = new Map<string, Promise<MuseumHall[]>>()
  private readonly guideStopCache = new Map<string, TimedCacheEntry<ExplainGuideStop[]>>()
  private readonly guideStopInflight = new Map<string, Promise<ExplainGuideStop[]>>()
+  private readonly guideStopPageCache = new Map<string, TimedCacheEntry<ExplainGuideStopPage>>()
+  private readonly guideStopPageInflight = new Map<string, Promise<ExplainGuideStopPage>>()
  private readonly outlineCache = new Map<string, TimedCacheEntry<BackendCatalogOutlineItem[]>>()
  private readonly outlineInflight = new Map<string, Promise<BackendCatalogOutlineItem[]>>()
  private readonly businessUnitCache = new Map<string, TimedCacheEntry<ExplainBusinessUnit[]>>()
@@ -222,11 +238,51 @@ export class BackendExplainContentProvider implements ExplainContentProvider {
    }
  }

+  private async requestCatalogStopsPageByHall(hallId: string, pageNo: number, pageSize: number): Promise<ExplainGuideStopPage> {
+    const normalizedHallId = hallId.trim()
+    const normalizedPageNo = Math.max(1, Math.floor(pageNo) || 1)
+    const normalizedPageSize = Math.min(100, Math.max(1, Math.floor(pageSize) || 20))
+    if (!normalizedHallId) return { items: [], total: 0, pageNo: normalizedPageNo, pageSize: normalizedPageSize, hasMore: false }
+
+    const key = cacheKey('hall', normalizedHallId, 'stops', 'page', String(normalizedPageNo), String(normalizedPageSize))
+    const cached = this.getCached(this.guideStopPageCache, key)
+    if (cached) return cached
+
+    const inflight = this.guideStopPageInflight.get(key)
+    if (inflight) return inflight
+
+    const promise = (async () => {
+      const halls = await this.requestCatalogHalls()
+      const hall = halls.find((item) => item.id === normalizedHallId) || null
+      const params = new URLSearchParams({ lang: catalogLang(), pageNo: String(normalizedPageNo), pageSize: String(normalizedPageSize) })
+      const url = `${resolveAppApiBaseUrl()}/gis/guide/catalog/halls/${encodeURIComponent(normalizedHallId)}/stops/page?${params.toString()}`
+      const data = requirePageData(await requestJson<CommonResult<BackendCatalogStopPage>>(url), '讲解对象目录加载失败')
+      const items = data.list
+        .map((item) => toCatalogGuideStop(item, hall, null))
+        .filter(Boolean) as ExplainGuideStop[]
+      const page = {
+        items,
+        total: data.total,
+        pageNo: normalizedPageNo,
+        pageSize: normalizedPageSize,
+        hasMore: normalizedPageNo * normalizedPageSize < data.total
+      }
+      this.setCached(this.guideStopPageCache, key, page)
+      return page
+    })()
+
+    this.guideStopPageInflight.set(key, promise)
+    try {
+      return await promise
+    } finally {
+      this.guideStopPageInflight.delete(key)
+    }
+  }
+
  private async requestCatalogStopsByHall(hallId: string) {
    const normalizedHallId = hallId.trim()
    if (!normalizedHallId) return []
-
-    const key = cacheKey('hall', normalizedHallId, 'stops')
+    const key = cacheKey('hall', normalizedHallId, 'stops', 'all')
    const cached = this.getCached(this.guideStopCache, key)
    if (cached) return cached

@@ -234,28 +290,18 @@ export class BackendExplainContentProvider implements ExplainContentProvider {
    if (inflight) return inflight

    const promise = (async () => {
-      const [halls, outlines] = await Promise.all([
-        this.requestCatalogHalls(),
-        this.requestCatalogOutlinesByHall(normalizedHallId).catch(() => [])
-      ])
-      const hall = halls.find((item) => item.id === normalizedHallId) || null
-      const outlineById = new Map(flattenCatalogOutlines(outlines).map((outline) => [String(outline.id || ''), outline]))
-
-      const params = new URLSearchParams({ lang: catalogLang() })
-      const url = `${resolveAppApiBaseUrl()}/gis/guide/catalog/halls/${encodeURIComponent(normalizedHallId)}/stops?${params.toString()}`
-      const response = await requestJson<CommonResult<BackendCatalogStopItem[]>>(url)
-      const stops = requireArrayData(response, '讲解点目录加载失败')
-        .map((item) => {
-          const outline = outlineById.get(String(item.outlineId || ''))
-          return toCatalogGuideStop(item, hall, outline
-            ? {
-              id: String(outline.id || ''),
-              name: String(outline.name || '')
+      const stops: ExplainGuideStop[] = []
+      const seen = new Set<string>()
+      for (let pageNo = 1; ; pageNo += 1) {
+        const page = await this.requestCatalogStopsPageByHall(normalizedHallId, pageNo, 100)
+        page.items.forEach((stop) => {
+          if (!seen.has(stop.id)) {
+            seen.add(stop.id)
+            stops.push(stop)
          }
-            : null)
        })
-        .filter(Boolean) as ExplainGuideStop[]
-
+        if (!page.hasMore || stops.length >= page.total) break
+      }
      this.setCached(this.guideStopCache, key, stops)
      return stops
    })()
@@ -416,6 +462,17 @@ export class BackendExplainContentProvider implements ExplainContentProvider {
    }
  }

+  async listGuideStopsPageByHall(hallId: string, pageNo: number, pageSize: number) {
+    try {
+      return await this.requestCatalogStopsPageByHall(hallId, pageNo, pageSize)
+    } catch (error) {
+      return this.fallbackOrThrow(error, '讲解对象目录加载失败', async () => (
+        this.fallbackProvider?.listGuideStopsPageByHall?.(hallId, pageNo, pageSize)
+          || { items: [], total: 0, pageNo, pageSize, hasMore: false }
+      ))
+    }
+  }
+
  async listExplainExhibitsByHall(hallId: string) {
    const [halls, stops] = await Promise.all([
      this.listHalls(),
--- a/src/data/providers/staticMuseumContentProvider.ts
+++ b/src/data/providers/staticMuseumContentProvider.ts
@@ -1,6 +1,7 @@
 import type {
  ExplainBusinessUnit,
  ExplainGuideStop,
+  ExplainGuideStopPage,
  ExplainTrack,
  MediaAsset,
  MuseumExhibit,
@@ -44,6 +45,7 @@ export interface ExplainContentProvider extends MuseumContentProvider {
  listExplainExhibitsByHall?(hallId: string): Promise<MuseumExhibit[]>
  searchExplainExhibits?(keyword?: string): Promise<MuseumExhibit[]>
  listGuideStopsByHall?(hallId: string): Promise<ExplainGuideStop[]>
+  listGuideStopsPageByHall?(hallId: string, pageNo: number, pageSize: number): Promise<ExplainGuideStopPage>
  listGuideStopsByBusinessUnit?(hallId: string, unitId: string): Promise<ExplainGuideStop[]>
  listTemporaryBusinessUnitsByHall?(hallId: string): Promise<ExplainBusinessUnit[]>
  listTracks(): Promise<ExplainTrack[]>
@@ -161,6 +163,20 @@ export class StaticGuideContentProvider implements ExplainContentProvider {
    return adapter.guideStops.filter((stop) => stop.hallId === hallId)
  }

+  async listGuideStopsPageByHall(hallId: string, pageNo: number, pageSize: number) {
+    const stops = await this.listGuideStopsByHall(hallId)
+    const normalizedPageNo = Math.max(1, Math.floor(pageNo) || 1)
+    const normalizedPageSize = Math.max(1, Math.floor(pageSize) || 20)
+    const offset = (normalizedPageNo - 1) * normalizedPageSize
+    return {
+      items: stops.slice(offset, offset + normalizedPageSize),
+      total: stops.length,
+      pageNo: normalizedPageNo,
+      pageSize: normalizedPageSize,
+      hasMore: offset + normalizedPageSize < stops.length
+    }
+  }
+
  async listTemporaryBusinessUnitsByHall(hallId: string) {
    const adapter = await this.loadExplainNavigationAdapter()
    return adapter.businessUnitsByHallId[hallId] || []
--- a/src/domain/museum.ts
+++ b/src/domain/museum.ts
@@ -244,6 +244,14 @@ export interface ExplainGuideStop {
  playTargetId?: string
 }

+export interface ExplainGuideStopPage {
+  items: ExplainGuideStop[]
+  total: number
+  pageNo: number
+  pageSize: number
+  hasMore: boolean
+}
+
 export interface ExplainBusinessUnit {
  id: string
  name: string
--- a/src/pages.json
+++ b/src/pages.json
@@ -30,18 +30,10 @@
        "navigationStyle": "custom"
      }
    },
-    {
-      "path": "pages/explain/business-unit-list",
-      "style": {
-        "navigationBarTitleText": "业务单元",
-        "navigationBarBackgroundColor": "#FFFFFF",
-        "navigationStyle": "custom"
-      }
-    },
    {
      "path": "pages/explain/guide-stop-list",
      "style": {
-        "navigationBarTitleText": "讲解点",
+        "navigationBarTitleText": "讲解对象",
        "navigationBarBackgroundColor": "#FFFFFF",
        "navigationStyle": "custom"
      }
--- a/src/pages/explain/business-unit-list.vue
+++ b/src/pages/explain/business-unit-list.vue
@@ -1,137 +0,0 @@
-<template>
-  <GuidePageFrame
-    active-tab="explain"
-    variant="static"
-    :show-top-tabs="false"
-    @tab-change="handleTopTabChange"
-    @back="handleBack"
-  >
-    <view class="explain-business-unit-page">
-      <ExplainHallSelect
-        :business-units="explainBusinessUnitItems"
-        stage="unit"
-        :selected-hall-name="selectedExplainHallName"
-        :loading="explainLoading"
-        :error="explainError"
-        @business-unit-click="handleExplainBusinessUnitClick"
-        @back="handleBack"
-      />
-    </view>
-  </GuidePageFrame>
-</template>
-
-<script setup lang="ts">
-import { computed, ref } from 'vue'
-import { onLoad } from '@dcloudio/uni-app'
-import GuidePageFrame from '@/components/navigation/GuidePageFrame.vue'
-import ExplainHallSelect, {
-  type ExplainBusinessUnitSelectItem
-} from '@/components/explain/ExplainHallSelect.vue'
-import {
-  explainUseCase
-} from '@/usecases/explainUseCase'
-import type {
-  ExplainBusinessUnit
-} from '@/domain/museum'
-import {
-  navigateToGuideTopTab,
-  type GuideTopTab
-} from '@/utils/guideTopTabs'
-
-const selectedExplainHallId = ref('')
-const selectedExplainHallName = ref('')
-const explainBusinessUnits = ref<ExplainBusinessUnit[]>([])
-const explainLoading = ref(false)
-const explainError = ref('')
-
-const explainBusinessUnitItems = computed<ExplainBusinessUnitSelectItem[]>(() => (
-  explainBusinessUnits.value.map((unit) => ({
-    id: unit.id,
-    name: unit.name,
-    hallId: unit.hallId,
-    previewImageUrl: unit.previewImageUrl,
-    guideStopCount: unit.guideStopCount
-  }))
-))
-
-const syncPageTitle = (title: string) => {
-  uni.setNavigationBarTitle({ title })
-  if (typeof document !== 'undefined') document.title = title
-}
-
-onLoad(async (options: any = {}) => {
-  const hallId = Array.isArray(options.hallId) ? options.hallId[0] : options.hallId
-  const hallName = Array.isArray(options.hallName) ? options.hallName[0] : options.hallName
-
-  selectedExplainHallId.value = hallId || ''
-  selectedExplainHallName.value = hallName || '业务单元'
-  syncPageTitle(selectedExplainHallName.value)
-
-  if (!selectedExplainHallId.value) {
-    explainError.value = '缺少展厅参数，请返回讲解列表后重试'
-    return
-  }
-
-  explainLoading.value = true
-  try {
-    explainBusinessUnits.value = await explainUseCase.loadTemporaryBusinessUnitsByHall(selectedExplainHallId.value)
-  } catch (error) {
-    explainError.value = '展厅讲解点加载失败，请稍后重试'
-  } finally {
-    explainLoading.value = false
-  }
-})
-
-const handleExplainBusinessUnitClick = (unitId: string) => {
-  const unit = explainBusinessUnits.value.find((item) => item.id === unitId)
-  const params = new URLSearchParams({
-    hallId: selectedExplainHallId.value,
-    hallName: selectedExplainHallName.value,
-    unitId,
-    unitName: unit?.name || '讲解点'
-  })
-
-  uni.navigateTo({
-    url: `/pages/explain/guide-stop-list?${params.toString()}`
-  })
-}
-
-const goBackToExplainHallList = () => {
-  uni.redirectTo({
-    url: '/pages/explain/list',
-    fail: () => {
-      uni.reLaunch({ url: '/pages/explain/list' })
-    }
-  })
-}
-
-const handleBack = () => {
-  const pages = getCurrentPages()
-  const previousPage = pages.length >= 2 ? pages[pages.length - 2] : null
-
-  if (
-    previousPage?.route === 'pages/explain/list'
-    || previousPage?.route === 'pages/index/index'
-  ) {
-    uni.navigateBack({
-      delta: 1,
-      fail: goBackToExplainHallList
-    })
-    return
-  }
-
-  goBackToExplainHallList()
-}
-
-const handleTopTabChange = (tab: GuideTopTab) => {
-  navigateToGuideTopTab(tab)
-}
-</script>
-
-<style scoped lang="scss">
-.explain-business-unit-page {
-  position: absolute;
-  inset: 0;
-  background: #edf0ea;
-}
-</style>
--- a/src/pages/explain/guide-stop-list.vue
+++ b/src/pages/explain/guide-stop-list.vue
@@ -1,19 +1,18 @@
 <template>
-  <GuidePageFrame
-    active-tab="explain"
-    variant="static"
-    :show-top-tabs="false"
-    @tab-change="handleTopTabChange"
-    @back="handleBack"
-  >
+  <GuidePageFrame active-tab="explain" variant="static" :show-top-tabs="false" @tab-change="handleTopTabChange" @back="handleBack">
    <view class="explain-guide-stop-page">
      <ExplainHallSelect
        :guide-stops="explainGuideStopItems"
        stage="stop"
-        :selected-business-unit-name="selectedExplainBusinessUnitName"
+        :selected-hall-name="selectedExplainHallName"
        :loading="explainLoading"
+        :loading-more="loadingMore"
+        :has-more="hasMore"
        :error="explainError"
+        :load-more-error="loadMoreError"
        @guide-stop-click="handleExplainGuideStopClick"
+        @retry="reloadFirstPage"
+        @retry-more="loadNextPage"
        @back="handleBack"
      />
    </view>
@@ -21,36 +20,29 @@
 </template>

 <script setup lang="ts">
-import { ref } from 'vue'
+import { onUnmounted, ref } from 'vue'
 import { onLoad } from '@dcloudio/uni-app'
 import GuidePageFrame from '@/components/navigation/GuidePageFrame.vue'
-import ExplainHallSelect, {
-  type ExplainGuideStopSelectItem
-} from '@/components/explain/ExplainHallSelect.vue'
-import {
-  explainUseCase
-} from '@/usecases/explainUseCase'
-import type {
-  ExplainGuideStop
-} from '@/domain/museum'
-import {
-  normalizeExplainDetailTargetFromGuideStop
-} from '@/domain/explainDetailTarget'
-import {
-  navigateToGuideTopTab,
-  type GuideTopTab
-} from '@/utils/guideTopTabs'
+import ExplainHallSelect, { type ExplainGuideStopSelectItem } from '@/components/explain/ExplainHallSelect.vue'
+import { explainUseCase } from '@/usecases/explainUseCase'
+import type { ExplainGuideStop } from '@/domain/museum'
+import { normalizeExplainDetailTargetFromGuideStop } from '@/domain/explainDetailTarget'
+import { navigateToGuideTopTab, type GuideTopTab } from '@/utils/guideTopTabs'

+const PAGE_SIZE = 20
 const selectedExplainHallId = ref('')
 const selectedExplainHallName = ref('')
-const selectedExplainBusinessUnitId = ref('')
-const selectedExplainBusinessUnitName = ref('')
 const explainGuideStopItems = ref<ExplainGuideStopSelectItem[]>([])
 const explainLoading = ref(false)
+const loadingMore = ref(false)
 const explainError = ref('')
+const loadMoreError = ref('')
+const hasMore = ref(false)
+const nextPageNo = ref(1)
+let requestVersion = 0
+let disposed = false

-const toGuideStopItems = (stops: ExplainGuideStop[]): ExplainGuideStopSelectItem[] => (
-  stops.map((stop) => ({
+const toGuideStopItems = (stops: ExplainGuideStop[]): ExplainGuideStopSelectItem[] => stops.map((stop) => ({
  id: stop.id,
  name: stop.name,
  hallId: stop.hallId,
@@ -59,7 +51,7 @@ const toGuideStopItems = (stops: ExplainGuideStop[]): ExplainGuideStopSelectItem
  poiId: stop.poiId,
  mapX: stop.mapX,
  mapY: stop.mapY,
-    coverImageUrl: stop.coverImageUrl,
+  coverImageUrl: stop.imageStatus === 'MISSING' ? undefined : stop.coverImageUrl,
  description: stop.description,
  hasAudio: stop.hasAudio,
  audioStatus: stop.audioStatus,
@@ -67,101 +59,119 @@ const toGuideStopItems = (stops: ExplainGuideStop[]): ExplainGuideStopSelectItem
  playTargetType: stop.playTargetType,
  playTargetId: stop.playTargetId
 }))
-)

 const syncPageTitle = (title: string) => {
  uni.setNavigationBarTitle({ title })
  if (typeof document !== 'undefined') document.title = title
 }

-onLoad(async (options: any = {}) => {
-  selectedExplainHallId.value = Array.isArray(options.hallId) ? options.hallId[0] : options.hallId || ''
-  selectedExplainHallName.value = Array.isArray(options.hallName) ? options.hallName[0] : options.hallName || ''
-  selectedExplainBusinessUnitId.value = Array.isArray(options.unitId) ? options.unitId[0] : options.unitId || ''
-  selectedExplainBusinessUnitName.value = Array.isArray(options.unitName) ? options.unitName[0] : options.unitName || '讲解点'
-
-  syncPageTitle(selectedExplainBusinessUnitName.value)
-
-  if (!selectedExplainHallId.value || !selectedExplainBusinessUnitId.value) {
-    explainError.value = '缺少业务单元参数，请返回上一级后重试'
-    return
-  }
-
+const loadPage = async (pageNo: number, replace: boolean) => {
+  const hallId = selectedExplainHallId.value
+  if (!hallId || disposed || (!replace && (loadingMore.value || !hasMore.value))) return
+  const version = ++requestVersion
+  if (replace) {
    explainLoading.value = true
+    explainError.value = ''
+    loadMoreError.value = ''
+  } else {
+    loadingMore.value = true
+    loadMoreError.value = ''
+  }
  try {
-    const unit = await explainUseCase.selectBusinessUnit(
-      selectedExplainHallId.value,
-      selectedExplainBusinessUnitId.value
-    )
-    if (!unit) {
-      explainError.value = '未找到对应业务单元，请返回上一级后重试'
+    const page = await explainUseCase.listGuideStopsPageByHall(hallId, pageNo, PAGE_SIZE)
+    if (disposed || version !== requestVersion || hallId !== selectedExplainHallId.value) return
+    const incoming = toGuideStopItems(page.items)
+    if (replace) {
+      explainGuideStopItems.value = incoming
+    } else {
+      const existingIds = new Set(explainGuideStopItems.value.map((item) => item.id))
+      explainGuideStopItems.value = [...explainGuideStopItems.value, ...incoming.filter((item) => !existingIds.has(item.id))]
+    }
+    nextPageNo.value = page.pageNo + 1
+    hasMore.value = page.hasMore && explainGuideStopItems.value.length < page.total
+  } catch (error) {
+    if (disposed || version !== requestVersion) return
+    if (replace) explainError.value = '讲解对象加载失败，请稍后重试'
+    else loadMoreError.value = '加载更多讲解对象失败，请重试'
+  } finally {
+    if (!disposed && version === requestVersion) {
+      explainLoading.value = false
+      loadingMore.value = false
+    }
+  }
+}
+
+const reloadFirstPage = () => {
+  if (!selectedExplainHallId.value) return
+  nextPageNo.value = 1
+  hasMore.value = false
+  void loadPage(1, true)
+}
+
+const loadNextPage = () => void loadPage(nextPageNo.value, false)
+
+onLoad((options: Record<string, string | string[] | undefined> = {}) => {
+  const first = (value: string | string[] | undefined) => Array.isArray(value) ? value[0] : value
+  selectedExplainHallId.value = first(options.hallId) || ''
+  selectedExplainHallName.value = first(options.hallName) || '讲解对象'
+  syncPageTitle('讲解对象')
+  if (!selectedExplainHallId.value) {
+    explainError.value = '缺少展厅参数，请返回展厅列表后重试'
    return
  }
-    selectedExplainBusinessUnitName.value = unit.name || selectedExplainBusinessUnitName.value
-    syncPageTitle(selectedExplainBusinessUnitName.value)
-    const stops = await explainUseCase.listGuideStopsByBusinessUnit(
-      selectedExplainHallId.value,
-      selectedExplainBusinessUnitId.value
-    )
-    explainGuideStopItems.value = toGuideStopItems(stops)
-  } catch (error) {
-    explainError.value = '讲解点加载失败，请稍后重试'
-  } finally {
-    explainLoading.value = false
-  }
+  reloadFirstPage()
+})
+
+onUnmounted(() => {
+  disposed = true
+  requestVersion += 1
 })

 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
-  })
+  const params = new URLSearchParams({ id: stop.id, tab: 'explain', targetType: target.targetType, targetId: target.targetId })
  if (stop.hallId) params.set('hallId', stop.hallId)
  if (stop.hallName) params.set('hallName', stop.hallName)
  if (stop.floorId) params.set('floorId', stop.floorId)
  if (stop.poiId) params.set('poiId', stop.poiId)
-
-  uni.navigateTo({
-    url: `/pages/exhibit/detail?${params.toString()}`
-  })
+  uni.navigateTo({ url: `/pages/exhibit/detail?${params.toString()}` })
 }

-const goBackToBusinessUnitList = () => {
-  const params = new URLSearchParams({
-    hallId: selectedExplainHallId.value,
-    hallName: selectedExplainHallName.value
-  })
+const fallbackToHallList = () => uni.reLaunch({ url: '/pages/explain/list' })

-  uni.redirectTo({
-    url: `/pages/explain/business-unit-list?${params.toString()}`,
-    fail: () => {
-      uni.reLaunch({ url: `/pages/explain/business-unit-list?${params.toString()}` })
+type ExplainPageStackEntry = {
+  route?: string
+  options?: {
+    tab?: string | string[]
  }
-  })
 }

-const handleBack = () => {
-  uni.navigateBack({
-    delta: 1,
-    fail: goBackToBusinessUnitList
-  })
+const returnToHallList = () => {
+  const pages = getCurrentPages()
+  const previousPage = pages[pages.length - 2] as ExplainPageStackEntry | undefined
+  const previousRoute = previousPage?.route
+  const previousTab = Array.isArray(previousPage?.options?.tab)
+    ? previousPage.options.tab[0]
+    : previousPage?.options?.tab
+  const canNavigateBackToHallList = (
+    previousRoute === 'pages/explain/list'
+    || (previousRoute === 'pages/index/index' && previousTab === 'explain')
+  )
+
+  if (canNavigateBackToHallList) {
+    uni.navigateBack({ delta: 1, fail: fallbackToHallList })
+    return
  }

-const handleTopTabChange = (tab: GuideTopTab) => {
-  navigateToGuideTopTab(tab)
+  fallbackToHallList()
 }
+
+const handleBack = returnToHallList
+const handleTopTabChange = (tab: GuideTopTab) => navigateToGuideTopTab(tab)
 </script>

 <style scoped lang="scss">
-.explain-guide-stop-page {
-  position: absolute;
-  inset: 0;
-  background: #edf0ea;
-}
+.explain-guide-stop-page { position: absolute; inset: 0; background: #edf0ea; }
 </style>
--- a/src/pages/explain/list.vue
+++ b/src/pages/explain/list.vue
@@ -38,6 +38,7 @@ import {
  type GuideTopTab
 } from '@/utils/guideTopTabs'
 import { isEmbeddedInWechatMiniProgram } from '@/utils/hostEnvironment'
+import { explainGuideStopListUrl } from '@/utils/explainNavigation'

 const explainHallItems = ref<ExplainHallSelectItem[]>([])
 const explainLoading = ref(false)
@@ -56,7 +57,6 @@ const buildExplainHallItems = (
    floorLabel: hall.floorLabel,
    image: hall.image,
    explainCount: hall.exhibitCount || 0,
-    businessUnitCount: summaries[hall.id]?.businessUnitCount,
    guideStopCount: summaries[hall.id]?.guideStopCount,
    searchText: normalizeExplainKeyword([
      hall.name,
@@ -225,13 +225,8 @@ const handleTopTabChange = (tab: GuideTopTab) => {

 const handleExplainHallClick = (hallId: string) => {
  const hall = explainHallItems.value.find((item) => item.id === hallId)
-  const params = new URLSearchParams({
-    hallId,
-    hallName: hall?.name || '讲解'
-  })
-
  uni.navigateTo({
-    url: `/pages/explain/business-unit-list?${params.toString()}`
+    url: explainGuideStopListUrl(hallId, hall?.name || '讲解')
  })
 }

--- a/src/pages/index/index.vue
+++ b/src/pages/index/index.vue
@@ -302,6 +302,7 @@ import type {
 import ExplainHallSelect, {
  type ExplainHallSelectItem
 } from '@/components/explain/ExplainHallSelect.vue'
+import { explainGuideStopListUrl } from '@/utils/explainNavigation'
 import {
  getLastGuideLocationPreviewUrl,
  isGuideTopTab,
@@ -990,7 +991,6 @@ const buildExplainHallItems = (
      floorLabel: hall.floorLabel,
      image: hall.image,
      explainCount: hall.exhibitCount || 0,
-      businessUnitCount: summaries[hall.id]?.businessUnitCount,
      guideStopCount: summaries[hall.id]?.guideStopCount,
      searchText: normalizeExplainKeyword(keywordParts.join(' '))
    }
@@ -1725,13 +1725,8 @@ const guideSearchText = computed(() => {
 // 讲解页面处理
 const handleExplainHallClick = async (hallId: string) => {
  const hall = explainHallItems.value.find((item) => item.id === hallId)
-  const params = new URLSearchParams({
-    hallId,
-    hallName: hall?.name || '讲解'
-  })
-
  uni.navigateTo({
-    url: `/pages/explain/business-unit-list?${params.toString()}`
+    url: explainGuideStopListUrl(hallId, hall?.name || '讲解')
  })
 }

--- a/src/repositories/ExplainRepository.ts
+++ b/src/repositories/ExplainRepository.ts
@@ -1,6 +1,7 @@
 import type {
  ExplainBusinessUnit,
  ExplainGuideStop,
+  ExplainGuideStopPage,
  ExplainTrack,
  MuseumExhibit,
  MuseumHall,
@@ -27,6 +28,7 @@ export interface ExplainRepository {
  listHalls(): Promise<MuseumHall[]>
  getHallById(id: string): Promise<MuseumHall | null>
  listGuideStopsByHall(hallId: string): Promise<ExplainGuideStop[]>
+  listGuideStopsPageByHall(hallId: string, pageNo: number, pageSize: number): Promise<ExplainGuideStopPage>
  listGuideStopsByBusinessUnit(hallId: string, unitId: string): Promise<ExplainGuideStop[]>
  listTemporaryBusinessUnitsByHall(hallId: string): Promise<ExplainBusinessUnit[]>
  listTracks(): Promise<ExplainTrack[]>
@@ -73,7 +75,36 @@ export class DefaultExplainRepository implements ExplainRepository {
  }

  async listGuideStopsByHall(hallId: string) {
-    return this.explainContent.listGuideStopsByHall?.(hallId) || []
+    const pageSize = 100
+    const items: ExplainGuideStop[] = []
+    const seen = new Set<string>()
+    for (let pageNo = 1; ; pageNo += 1) {
+      const page = await this.listGuideStopsPageByHall(hallId, pageNo, pageSize)
+      page.items.forEach((item) => {
+        if (!seen.has(item.id)) {
+          seen.add(item.id)
+          items.push(item)
+        }
+      })
+      if (!page.hasMore || items.length >= page.total) return items
+    }
+  }
+
+  async listGuideStopsPageByHall(hallId: string, pageNo: number, pageSize: number) {
+    if (this.explainContent.listGuideStopsPageByHall) {
+      return this.explainContent.listGuideStopsPageByHall(hallId, pageNo, pageSize)
+    }
+    const items = await this.explainContent.listGuideStopsByHall?.(hallId) || []
+    const normalizedPageNo = Math.max(1, Math.floor(pageNo) || 1)
+    const normalizedPageSize = Math.max(1, Math.floor(pageSize) || 20)
+    const offset = (normalizedPageNo - 1) * normalizedPageSize
+    return {
+      items: items.slice(offset, offset + normalizedPageSize),
+      total: items.length,
+      pageNo: normalizedPageNo,
+      pageSize: normalizedPageSize,
+      hasMore: offset + normalizedPageSize < items.length
+    }
  }

  async listGuideStopsByBusinessUnit(hallId: string, unitId: string) {
--- a/src/usecases/explainUseCase.ts
+++ b/src/usecases/explainUseCase.ts
@@ -2,6 +2,7 @@ import type {
  AudioPlayTargetType,
  ExplainBusinessUnit,
  ExplainGuideStop,
+  ExplainGuideStopPage,
  ExplainTrack,
  MediaAsset,
  MuseumExhibit,
@@ -67,7 +68,6 @@ export interface ExhibitDetailAudioOptions {

 export interface ExplainHallSummary {
  hallId: string
-  businessUnitCount: number
  guideStopCount: number
 }

@@ -487,24 +487,20 @@ export class ExplainUseCase {
      if (hall && (typeof hall.outlineCount === 'number' || typeof hall.stopCount === 'number')) {
        return [hallId, {
          hallId,
-          businessUnitCount: hall.outlineCount || 0,
          guideStopCount: hall.stopCount || 0
        }] as const
      }

      try {
-        const units = await this.loadTemporaryBusinessUnitsByHall(hallId)
-        const guideStopCount = units.reduce((total, unit) => total + unit.guideStopCount, 0)
+        const page = await this.listGuideStopsPageByHall(hallId, 1, 1)
        return [hallId, {
          hallId,
-          businessUnitCount: units.length,
-          guideStopCount
+          guideStopCount: page.total
        }] as const
      } catch (error) {
        console.warn('讲解展厅统计加载失败:', hallId, error)
        return [hallId, {
          hallId,
-          businessUnitCount: 0,
          guideStopCount: 0
        }] as const
      }
@@ -513,6 +509,10 @@ export class ExplainUseCase {
    return Object.fromEntries(entries)
  }

+  listGuideStopsPageByHall(hallId: string, pageNo: number, pageSize: number): Promise<ExplainGuideStopPage> {
+    return this.explain.listGuideStopsPageByHall(hallId, pageNo, pageSize)
+  }
+
  getHallById(id: string) {
    return this.explain.getHallById(id)
  }
--- a/src/utils/explainNavigation.ts
+++ b/src/utils/explainNavigation.ts
@@ -0,0 +1,4 @@
+export const explainGuideStopListUrl = (hallId: string, hallName = '讲解') => {
+  const params = new URLSearchParams({ hallId, hallName })
+  return `/pages/explain/guide-stop-list?${params.toString()}`
+}
--- a/tests/e2e/explain-hall-page.spec.ts
+++ b/tests/e2e/explain-hall-page.spec.ts
@@ -0,0 +1,40 @@
+import { expect, test } from '@playwright/test'
+
+const stops = Array.from({ length: 21 }, (_, index) => ({
+  stopId: `stop-${index + 1}`,
+  name: `讲解对象${index + 1}`,
+  imageStatus: index === 0 ? 'READY' : 'MISSING',
+  coverImageUrl: index === 0 ? '/one.jpg' : undefined,
+  playTargetType: 'STOP' as const,
+  playTargetId: `target-${index + 1}`
+}))
+
+test('hall goes directly to paged guide objects without outline requests', async ({ page }) => {
+  const requests: string[] = []
+  await page.route('**/app-api/gis/guide/catalog/**', async (route) => {
+    const url = route.request().url()
+    requests.push(url)
+    if (url.includes('/catalog/halls?')) {
+      await route.fulfill({ json: { code: 0, data: [{ id: 'hall-1', name: '恐龙厅', floorId: 'L1', stopCount: 21 }] } })
+      return
+    }
+    if (url.includes('/halls/hall-1/stops/page')) {
+      const pageNo = new URL(url).searchParams.get('pageNo')
+      await route.fulfill({ json: { code: 0, data: { total: 21, list: pageNo === '1' ? stops.slice(0, 20) : stops.slice(20) } } })
+      return
+    }
+    await route.fulfill({ status: 404, json: { code: 404, msg: 'unexpected request' } })
+  })
+
+  await page.goto('/#/pages/explain/list')
+  await page.getByText('恐龙厅', { exact: true }).click()
+  await expect(page).toHaveURL(/guide-stop-list\?hallId=hall-1/)
+  await expect(page.getByText('讲解对象1', { exact: true })).toBeVisible()
+  await page.locator('.explain-scroll').hover()
+  await page.mouse.wheel(0, 10000)
+  await expect(page.getByText('讲解对象21', { exact: true })).toBeVisible()
+  await page.getByText('讲解对象1', { exact: true }).click()
+  await expect(page).toHaveURL(/pages\/exhibit\/detail\?.*targetType=STOP.*targetId=target-1/)
+  expect(requests.some((url) => url.includes('/outlines'))).toBe(false)
+  expect(requests.filter((url) => url.includes('/stops/page')).map((url) => new URL(url).searchParams.get('pageNo'))).toEqual(['1', '2'])
+})
--- a/tests/unit/BackendExplainContentProvider.spec.ts
+++ b/tests/unit/BackendExplainContentProvider.spec.ts
@@ -0,0 +1,57 @@
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { BackendExplainContentProvider } from '@/data/providers/backendExplainContentProvider'
+
+const installRequest = (handler: (url: string) => unknown) => {
+  vi.stubGlobal('uni', {
+    request: ({ url, success }: { url: string, success: (response: unknown) => void }) => {
+      success({ statusCode: 200, data: handler(url) })
+    }
+  })
+}
+
+describe('BackendExplainContentProvider hall stop paging', () => {
+  afterEach(() => vi.unstubAllGlobals())
+
+  it('uses the paged hall endpoint and maps independent pages without outlines', async () => {
+    const requests: string[] = []
+    installRequest((url) => {
+      requests.push(url)
+      if (url.includes('/catalog/halls?')) return { code: 0, data: [{ id: 'hall-1', name: '恐龙厅', floorId: 'f1' }] }
+      const pageNo = new URL(url, 'http://localhost').searchParams.get('pageNo')
+      return {
+        code: 0,
+        data: {
+          total: 30,
+          list: pageNo === '1'
+            ? [{ stopId: 'stop-1', name: '对象一', imageStatus: 'READY', coverImageUrl: '/one.jpg', playTargetType: 'STOP', playTargetId: 'target-1' }]
+            : [{ stopId: 'stop-2', name: '对象二', imageStatus: 'MISSING', playTargetType: 'STOP', playTargetId: 'target-2' }]
+        }
+      }
+    })
+    const provider = new BackendExplainContentProvider()
+    const [first, second] = await Promise.all([
+      provider.listGuideStopsPageByHall('hall-1', 1, 20),
+      provider.listGuideStopsPageByHall('hall-1', 2, 20)
+    ])
+
+    expect(first).toMatchObject({ total: 30, pageNo: 1, pageSize: 20, hasMore: true })
+    expect(first.items[0]).toMatchObject({ id: 'stop-1', hallName: '恐龙厅', playTargetId: 'target-1' })
+    expect(second.items.map((item) => item.id)).toEqual(['stop-2'])
+    expect(requests.filter((url) => url.includes('/stops/page'))).toHaveLength(2)
+    expect(requests.some((url) => url.includes('/outlines'))).toBe(false)
+    expect(requests.find((url) => url.includes('pageNo=1') && url.includes('pageSize=20') && url.includes('lang=zh-CN'))).toBeTruthy()
+  })
+
+  it('clears failed inflight requests so the page can be retried', async () => {
+    let attempts = 0
+    installRequest((url) => {
+      if (url.includes('/catalog/halls?')) return { code: 0, data: [{ id: 'hall-1', name: '恐龙厅' }] }
+      attempts += 1
+      return attempts === 1 ? { code: 500, msg: 'temporary failure' } : { code: 0, data: { list: [], total: 0 } }
+    })
+    const provider = new BackendExplainContentProvider()
+    await expect(provider.listGuideStopsPageByHall('hall-1', 1, 20)).rejects.toThrow('temporary failure')
+    await expect(provider.listGuideStopsPageByHall('hall-1', 1, 20)).resolves.toMatchObject({ items: [], total: 0, hasMore: false })
+    expect(attempts).toBe(2)
+  })
+})
--- a/tests/unit/ExplainGuideStopListNavigation.spec.ts
+++ b/tests/unit/ExplainGuideStopListNavigation.spec.ts
@@ -0,0 +1,122 @@
+// @vitest-environment happy-dom
+
+import { defineComponent } from 'vue'
+import { flushPromises, mount } from '@vue/test-utils'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import ExplainGuideStopListPage from '@/pages/explain/guide-stop-list.vue'
+
+const testState = vi.hoisted(() => ({
+  onLoadHandler: null as null | ((options?: Record<string, string>) => void)
+}))
+
+vi.mock('@dcloudio/uni-app', () => ({
+  onLoad: (handler: (options?: Record<string, string>) => void) => {
+    testState.onLoadHandler = handler
+  }
+}))
+
+vi.mock('@/usecases/explainUseCase', () => ({
+  explainUseCase: {
+    listGuideStopsPageByHall: vi.fn().mockResolvedValue({
+      items: [], total: 0, pageNo: 1, pageSize: 20, hasMore: false
+    })
+  }
+}))
+
+const GuidePageFrameStub = defineComponent({
+  name: 'GuidePageFrame',
+  emits: ['back'],
+  template: '<main><button data-testid="frame-back" @click="$emit(\'back\')">返回</button><slot /></main>'
+})
+
+const ExplainHallSelectStub = defineComponent({
+  name: 'ExplainHallSelect',
+  emits: ['back'],
+  template: '<button data-testid="list-back" @click="$emit(\'back\')">返回</button>'
+})
+
+const mountGuideStopList = () => mount(ExplainGuideStopListPage, {
+  global: {
+    stubs: {
+      GuidePageFrame: GuidePageFrameStub,
+      ExplainHallSelect: ExplainHallSelectStub
+    }
+  }
+})
+
+beforeEach(() => {
+  testState.onLoadHandler = null
+  vi.stubGlobal('uni', {
+    navigateBack: vi.fn(),
+    reLaunch: vi.fn(),
+    navigateTo: vi.fn(),
+    setNavigationBarTitle: vi.fn()
+  })
+  vi.stubGlobal('getCurrentPages', vi.fn(() => []))
+})
+
+afterEach(() => {
+  vi.restoreAllMocks()
+  vi.unstubAllGlobals()
+})
+
+describe('讲解对象列表返回', () => {
+  it('上一页是独立展厅列表时回到该列表', async () => {
+    vi.stubGlobal('getCurrentPages', vi.fn(() => [
+      { route: 'pages/explain/list', options: {} },
+      { route: 'pages/explain/guide-stop-list', options: {} }
+    ]))
+    const wrapper = mountGuideStopList()
+    testState.onLoadHandler?.({ hallId: 'hall-1', hallName: '恐龙厅' })
+    await flushPromises()
+
+    await wrapper.get('[data-testid="frame-back"]').trigger('click')
+
+    expect(uni.navigateBack).toHaveBeenCalledWith(expect.objectContaining({ delta: 1 }))
+    expect(uni.reLaunch).not.toHaveBeenCalled()
+    wrapper.unmount()
+  })
+
+  it('上一页是首页讲解 Tab 时回到首页中的展厅列表', async () => {
+    vi.stubGlobal('getCurrentPages', vi.fn(() => [
+      { route: 'pages/index/index', options: { tab: 'explain' } },
+      { route: 'pages/explain/guide-stop-list', options: {} }
+    ]))
+    const wrapper = mountGuideStopList()
+
+    await wrapper.get('[data-testid="list-back"]').trigger('click')
+
+    expect(uni.navigateBack).toHaveBeenCalledWith(expect.objectContaining({ delta: 1 }))
+    expect(uni.reLaunch).not.toHaveBeenCalled()
+    wrapper.unmount()
+  })
+
+  it('深链或不相关上一页直接回退至独立展厅列表', async () => {
+    const wrapper = mountGuideStopList()
+
+    await wrapper.get('[data-testid="list-back"]').trigger('click')
+
+    expect(uni.navigateBack).not.toHaveBeenCalled()
+    expect(uni.reLaunch).toHaveBeenCalledWith({ url: '/pages/explain/list' })
+    wrapper.unmount()
+  })
+
+  it('页面栈返回失败时回退至独立展厅列表', async () => {
+    vi.stubGlobal('getCurrentPages', vi.fn(() => [
+      { route: 'pages/explain/list', options: {} },
+      { route: 'pages/explain/guide-stop-list', options: {} }
+    ]))
+    vi.stubGlobal('uni', {
+      navigateBack: vi.fn((options: { fail?: () => void }) => options.fail?.()),
+      reLaunch: vi.fn(),
+      navigateTo: vi.fn(),
+      setNavigationBarTitle: vi.fn()
+    })
+    const wrapper = mountGuideStopList()
+
+    await wrapper.get('[data-testid="list-back"]').trigger('click')
+
+    expect(uni.reLaunch).toHaveBeenCalledWith({ url: '/pages/explain/list' })
+    wrapper.unmount()
+  })
+})
--- a/tests/unit/ExplainHallSelect.spec.ts
+++ b/tests/unit/ExplainHallSelect.spec.ts
@@ -9,38 +9,30 @@ vi.mock('@/utils/hostEnvironment', () => ({
 }))

 describe('讲解展厅选择列表', () => {
-  it('业务单元卡片不显示业务单元标签，并保留讲解数量和点击事件', async () => {
+  it('展厅卡片只显示讲解对象数量，不暴露业务单元契约', async () => {
    const wrapper = mount(ExplainHallSelect, {
      props: {
-        stage: 'unit',
-        businessUnits: [
+        stage: 'hall',
+        halls: [
          {
-            id: 'unit-evolution',
-            name: '生命演化',
-            hallId: 'hall-evolution',
-            guideStopCount: 6
-          },
-          {
-            id: 'unit-dinosaur',
-            name: '恐龙世界',
-            hallId: 'hall-dinosaur',
-            guideStopCount: 4
+            id: 'hall-evolution',
+            name: '生命演化厅',
+            explainCount: 6,
+            guideStopCount: 6,
+            searchText: '生命演化厅'
          }
        ]
      }
    })

-    const cards = wrapper.findAll('.unit-card')
-    expect(cards).toHaveLength(2)
-    expect(wrapper.text()).toContain('生命演化')
-    expect(wrapper.text()).toContain('恐龙世界')
-    expect(wrapper.text()).toContain('6 个讲解')
-    expect(wrapper.text()).toContain('4 个讲解')
-    expect(cards.map((card) => card.text()).join('')).not.toContain('业务单元')
-    expect(cards[0]?.find('.floor-badge').exists()).toBe(false)
+    const cards = wrapper.findAll('.hall-card')
+    expect(cards).toHaveLength(1)
+    expect(wrapper.text()).toContain('生命演化厅')
+    expect(wrapper.text()).toContain('6 个讲解对象')
+    expect(wrapper.text()).not.toContain('业务单元')

    await cards[0]?.trigger('tap')
-    expect(wrapper.emitted('businessUnitClick')).toEqual([['unit-evolution']])
+    expect(wrapper.emitted('hallClick')).toEqual([['hall-evolution']])
  })

  it('READY 讲解点不显示可讲解标签，非 READY 讲解点保留图文标签和点击事件', async () => {
--- a/tests/unit/ExplainNavigation.spec.ts
+++ b/tests/unit/ExplainNavigation.spec.ts
@@ -0,0 +1,13 @@
+import { describe, expect, it } from 'vitest'
+import { explainGuideStopListUrl } from '@/utils/explainNavigation'
+
+describe('explain navigation', () => {
+  it('builds the hall-only guide-object URL', () => {
+    const url = explainGuideStopListUrl('hall-1', '恐龙厅')
+    expect(url.split('?')[0]).toBe('/pages/explain/guide-stop-list')
+    const params = new URLSearchParams(url.split('?')[1])
+    expect(params.get('hallId')).toBe('hall-1')
+    expect(params.get('hallName')).toBe('恐龙厅')
+    expect(params.has('unitId')).toBe(false)
+  })
+})
--- a/tests/unit/ExplainUseCase.spec.ts
+++ b/tests/unit/ExplainUseCase.spec.ts
@@ -0,0 +1,102 @@
+import { describe, expect, it, vi } from 'vitest'
+import type { GuideStopInfo } from '@/data/adapters/guideStopInfoAdapter'
+import type { AudioPlayInfoRepository } from '@/repositories/AudioPlayInfoRepository'
+import type { ExplainRepository } from '@/repositories/ExplainRepository'
+import { ExplainUseCase } from '@/usecases/explainUseCase'
+import { dataSourceConfig } from '@/config/dataSource'
+
+const createStopInfo = (overrides: Partial<GuideStopInfo> = {}): GuideStopInfo => ({
+  available: true,
+  targetType: 'STOP',
+  targetId: 'stop-1',
+  lang: 'zh-CN',
+  title: 'Guide stop',
+  galleryUrls: [],
+  imageStatus: 'MISSING',
+  linkedExhibits: [
+    {
+      id: 'exhibit-1',
+      name: 'Linked exhibit',
+      coverImageUrl: '/linked-exhibit.jpg'
+    }
+  ],
+  playTargetType: 'STOP',
+  playTargetId: 'stop-1',
+  hasAudio: false,
+  hasText: false,
+  supportedLanguages: [],
+  audioStatus: 'MISSING',
+  ...overrides
+})
+
+const createUseCase = (stopInfo: GuideStopInfo) => {
+  const explain = {
+    getExhibitById: vi.fn().mockResolvedValue(null),
+    listExplainExhibits: vi.fn().mockResolvedValue([])
+  } as unknown as ExplainRepository
+  const audioPlayInfo = {
+    getStopInfo: vi.fn().mockResolvedValue(stopInfo)
+  } as unknown as AudioPlayInfoRepository
+
+  return new ExplainUseCase(explain, audioPlayInfo)
+}
+
+describe('ExplainUseCase stop image policy', () => {
+  it('uses stop-info first in remote mode without requesting a catalog fallback', async () => {
+    const originalMode = dataSourceConfig.explainContentMode
+    Object.assign(dataSourceConfig, { explainContentMode: 'remote' })
+    const explain = {
+      getExhibitById: vi.fn(),
+      listExplainExhibits: vi.fn(),
+      listExplainExhibitsByHall: vi.fn()
+    } as unknown as ExplainRepository
+    const audio = { getStopInfo: vi.fn().mockResolvedValue(createStopInfo()) } as unknown as AudioPlayInfoRepository
+
+    await new ExplainUseCase(explain, audio).enterExplainDetail({
+      exhibitId: 'stop-1', targetType: 'STOP', targetId: 'stop-1', hallName: '宇宙厅'
+    })
+
+    expect(audio.getStopInfo).toHaveBeenCalledTimes(1)
+    expect(explain.getExhibitById).not.toHaveBeenCalled()
+    expect(explain.listExplainExhibits).not.toHaveBeenCalled()
+    Object.assign(dataSourceConfig, { explainContentMode: originalMode })
+  })
+
+  it('delegates hall exhibits and business-unit stops without loading full exhibits', async () => {
+    const explain = {
+      listExplainExhibitsByHall: vi.fn().mockResolvedValue([]),
+      listGuideStopsByBusinessUnit: vi.fn().mockResolvedValue([])
+    } as unknown as ExplainRepository
+    const useCase = new ExplainUseCase(explain, {} as AudioPlayInfoRepository)
+    await useCase.listExhibitsByHallId('hall-1')
+    await useCase.listGuideStopsByBusinessUnit('hall-1', 'outline-1')
+    expect(explain.listExplainExhibitsByHall).toHaveBeenCalledWith('hall-1')
+    expect(explain.listGuideStopsByBusinessUnit).toHaveBeenCalledWith('hall-1', 'outline-1')
+  })
+  it('does not use linked exhibit images when stop-info reports MISSING', async () => {
+    const detail = await createUseCase(createStopInfo()).enterExplainDetail({
+      exhibitId: 'stop-1',
+      targetType: 'STOP',
+      targetId: 'stop-1'
+    })
+
+    expect(detail.image).toBeUndefined()
+    expect(detail.galleryUrls).toEqual([])
+    expect(detail.linkedExhibits?.[0]?.coverImageUrl).toBe('/linked-exhibit.jpg')
+  })
+
+  it('uses the stop image when stop-info reports READY', async () => {
+    const detail = await createUseCase(createStopInfo({
+      imageStatus: 'READY',
+      coverImageUrl: '/guide-stop.jpg',
+      galleryUrls: ['/guide-stop-gallery.jpg']
+    })).enterExplainDetail({
+      exhibitId: 'stop-1',
+      targetType: 'STOP',
+      targetId: 'stop-1'
+    })
+
+    expect(detail.image).toBe('/guide-stop.jpg')
+    expect(detail.galleryUrls).toEqual(['/guide-stop-gallery.jpg'])
+  })
+})