diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..8c79588
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,3 @@
+# 腾讯地图 API Key
+# 请到 https://lbs.qq.com/index.html 申请
+VITE_TENCENT_MAP_KEY=your_tencent_map_key_here
diff --git a/docs/superpowers/plans/2026-06-25-sgs-sdk-data-switch-viewmodels.md b/docs/superpowers/plans/2026-06-25-sgs-sdk-data-switch-viewmodels.md
new file mode 100644
index 0000000..84666ef
--- /dev/null
+++ b/docs/superpowers/plans/2026-06-25-sgs-sdk-data-switch-viewmodels.md
@@ -0,0 +1,870 @@
+# SGS SDK Data Switch ViewModel Convergence Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Complete the SGS SDK data-source switch by keeping `static/api/sdk` mode behavior intact while moving remaining page-level mapping into the existing adapter/view-model middle layers.
+
+**Architecture:** Keep the existing split: providers/adapters map source payloads to domain models, repositories/use cases expose business operations, and `src/view-models/*` maps domain models into presentation props. The implementation does not rewrite the SGS provider, repository, renderer, or pages; it only closes remaining mapping leaks and adds observable mode diagnostics.
+
+**Tech Stack:** uni-app H5, Vue 3 `<script setup>`, TypeScript, `vue-tsc`, ESLint, existing `GuideUseCase`, `GuideRepository`, `GuideMapShell`, `ThreeMap`, and `SgsMapRenderer`.
+
+---
+
+## Current State Summary
+
+Already present and should be preserved:
+
+```text
+VITE_DATA_SOURCE_MODE=static -> StaticGuideRepository + ThreeMap
+VITE_DATA_SOURCE_MODE=api    -> SgsSdkGuideRepository + ThreeMap
+VITE_DATA_SOURCE_MODE=sdk    -> SgsSdkGuideRepository + SgsMapRenderer
+```
+
+Evidence from source audit:
+
+- `src/config/dataSource.ts` supports `static | api | sdk` and centralizes SGS API/SDK config.
+- `src/repositories/createGuideRepository.ts` selects `SgsSdkGuideRepository` for `api` and `sdk`.
+- `src/components/navigation/GuideMapShell.vue` selects `SgsMapRenderer` only when `isSgsSdkMode()` is true.
+- `src/data/adapters/sgsSdkGuideAdapter.ts` maps SGS payloads to `MuseumFloor`, `MuseumPoi`, diagnostics, and route readiness.
+- `src/view-models/guideViewModels.ts` and `src/view-models/explainViewModels.ts` already exist, but `src/pages/index/index.vue` still owns some route/explain/card mapping.
+
+## File Structure
+
+Modify these files only:
+
+- `src/view-models/guideViewModels.ts`
+  - Add guide presentation view models for selected POI cards and route-point picker options.
+  - Add conversion helpers so pages do not build route picker props from domain models inline.
+
+- `src/view-models/explainViewModels.ts`
+  - Move explain hall selector item mapping from `src/pages/index/index.vue` into the view-model layer.
+
+- `src/components/navigation/RoutePointPicker.vue`
+  - Consume `RoutePointOptionViewModel` from `src/view-models/guideViewModels.ts` and re-export it as `RoutePointOption` for existing imports.
+
+- `src/components/navigation/RoutePlannerPanel.vue`
+  - Consume the same `RoutePointOption` alias exported by `RoutePointPicker.vue`; no behavior change.
+
+- `src/components/explain/ExplainHallSelect.vue`
+  - Consume `ExplainHallSelectItem` from `src/view-models/explainViewModels.ts` instead of defining presentation item shape locally.
+
+- `src/pages/index/index.vue`
+  - Replace inline mapping helpers with imports from view-models.
+  - Keep page state and user interactions in the page.
+  - Keep the existing `GuideUseCase`/`guideRouteUseCase` calls.
+
+- `src/config/dataSource.ts`
+  - Add a small diagnostics helper that reports selected data source and renderer mode.
+
+- `src/components/navigation/GuideMapShell.vue`
+  - Log the mode diagnostic once in dev/H5 so QA can confirm `static/api/sdk` mode without inspecting code.
+
+Do not modify:
+
+- `src/data/providers/sgsSdkApiProvider.ts`
+- `src/data/adapters/sgsSdkGuideAdapter.ts`
+- `src/repositories/GuideRepository.ts`
+- `src/repositories/createGuideRepository.ts`
+- `src/components/map/SgsMapRenderer.vue`
+- `src/services/sgs/SgsMapService.ts`
+- `src/services/sgs/SgsMapScriptLoader.ts`
+
+---
+
+### Task 1: Add Guide ViewModel Mappers
+
+**Files:**
+- Modify: `src/view-models/guideViewModels.ts`
+
+- [ ] **Step 1: Add imports for route target and renderer POI types**
+
+At the top of `src/view-models/guideViewModels.ts`, replace the existing imports with:
+
+```ts
+import type {
+  GuideLocationPreview,
+  GuideLocationPreviewPlan,
+  GuideRouteTarget,
+  MuseumFloor,
+  MuseumPoi
+} from '@/domain/museum'
+import type {
+  GuideRenderPoi
+} from '@/domain/guideModel'
+```
+
+Expected: the existing `GuideLocationPreview`, `GuideLocationPreviewPlan`, and `MuseumPoi` usages still compile, and the file can now define route picker and selected POI card mappers.
+
+- [ ] **Step 2: Add route point and selected POI card view-model interfaces**
+
+After `TargetPoiFocusRequestViewModel`, add:
+
+```ts
+export interface RoutePointOptionViewModel {
+  poiId: string
+  name: string
+  floorId: string
+  floorLabel: string
+  categoryLabel?: string
+}
+
+export interface SelectedGuidePoiCardViewModel {
+  id: string
+  name: string
+  subtitle: string
+  collapsedSubtitle: string
+}
+```
+
+Expected: these types become the presentation contract for `RoutePointPicker`, `RoutePlannerPanel`, and the selected POI card in `src/pages/index/index.vue`.
+
+- [ ] **Step 3: Add mappers for route targets and selected POI cards**
+
+After `toTargetFocusRequestViewModel`, add:
+
+```ts
+export const toRoutePointOptionViewModel = (target: GuideRouteTarget): RoutePointOptionViewModel => ({
+  poiId: target.poiId,
+  name: target.name,
+  floorId: target.floorId,
+  floorLabel: target.floorLabel,
+  categoryLabel: target.categoryLabel
+})
+
+export const toSelectedGuidePoiCardViewModel = (
+  poi: GuideRenderPoi,
+  floors: MuseumFloor[]
+): SelectedGuidePoiCardViewModel => {
+  const floor = floors.find((item) => item.id === poi.floorId)
+  const floorLabel = floor?.label || poi.floorId
+  const categoryLabel = poi.primaryCategoryZh || '位置预览'
+
+  return {
+    id: poi.id,
+    name: poi.name,
+    subtitle: `${floorLabel} · ${categoryLabel}`,
+    collapsedSubtitle: '位置预览 · 点按展开操作'
+  }
+}
+```
+
+Expected: `src/pages/index/index.vue` no longer needs to know how to format selected POI subtitles or route-point picker items.
+
+- [ ] **Step 4: Run type-check for this isolated change**
+
+Run:
+
+```powershell
+pnpm type-check
+```
+
+Expected: PASS. If it fails because imports are unused, continue to Task 2 and Task 5 before re-running.
+
+- [ ] **Step 5: Commit if authorized**
+
+Do not commit unless the user explicitly authorizes commits in this session. If authorized, run:
+
+```powershell
+git add src/view-models/guideViewModels.ts
+git commit -m @'
+refactor: add guide presentation view models
+
+Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
+'@
+```
+
+Expected: one commit containing only `src/view-models/guideViewModels.ts`.
+
+---
+
+### Task 2: Move Route Picker Presentation Type To ViewModel Layer
+
+**Files:**
+- Modify: `src/components/navigation/RoutePointPicker.vue`
+- Modify: `src/components/navigation/RoutePlannerPanel.vue`
+
+- [ ] **Step 1: Update RoutePointPicker type source**
+
+In `src/components/navigation/RoutePointPicker.vue`, replace the local `RoutePointOption` interface with this import/export block immediately after `import { computed, ref, watch } from 'vue'`:
+
+```ts
+import type {
+  RoutePointOptionViewModel
+} from '@/view-models/guideViewModels'
+
+export type RoutePointOption = RoutePointOptionViewModel
+```
+
+Remove this old block from the same file:
+
+```ts
+export interface RoutePointOption {
+  poiId: string
+  name: string
+  floorId: string
+  floorLabel: string
+  categoryLabel?: string
+}
+```
+
+Expected: `RoutePointPicker` still accepts the same prop shape, but the contract is owned by `src/view-models/guideViewModels.ts`.
+
+- [ ] **Step 2: Confirm RoutePlannerPanel remains compatible**
+
+Leave this import in `src/components/navigation/RoutePlannerPanel.vue` unchanged:
+
+```ts
+import RoutePointPicker, {
+  type RoutePointOption
+} from '@/components/navigation/RoutePointPicker.vue'
+```
+
+Expected: because `RoutePointPicker.vue` re-exports the view-model alias, no RoutePlannerPanel behavior changes.
+
+- [ ] **Step 3: Run type-check for picker type migration**
+
+Run:
+
+```powershell
+pnpm type-check
+```
+
+Expected: PASS or only failures from later not-yet-updated page imports if Task 5 has not been applied.
+
+- [ ] **Step 4: Commit if authorized**
+
+Do not commit unless the user explicitly authorizes commits in this session. If authorized, run:
+
+```powershell
+git add src/components/navigation/RoutePointPicker.vue src/components/navigation/RoutePlannerPanel.vue
+git commit -m @'
+refactor: route picker uses guide view model type
+
+Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
+'@
+```
+
+Expected: one commit containing the route picker type ownership change.
+
+---
+
+### Task 3: Add Explain Hall Selector ViewModel Mapper
+
+**Files:**
+- Modify: `src/view-models/explainViewModels.ts`
+- Modify: `src/components/explain/ExplainHallSelect.vue`
+
+- [ ] **Step 1: Add ExplainHallSelectItem interface to explain view models**
+
+In `src/view-models/explainViewModels.ts`, after `HallDetailViewModel`, add:
+
+```ts
+export interface ExplainHallSelectItem {
+  id: string
+  name: string
+  floorLabel?: string
+  image?: string
+  explainCount: number
+  searchText: string
+}
+```
+
+Expected: the hall selector item presentation contract is no longer owned by the component file.
+
+- [ ] **Step 2: Add hall-selector mapping helpers**
+
+In `src/view-models/explainViewModels.ts`, after `toExplainSearchResultViewModel`, add:
+
+```ts
+const normalizeExplainKeyword = (value?: string) => (value || '').trim().toLowerCase()
+
+export const toExplainHallSelectItems = (
+  halls: MuseumHall[],
+  exhibits: MuseumExhibit[]
+): ExplainHallSelectItem[] => {
+  const countsByHallId = new Map<string, number>()
+  const countsByHallName = new Map<string, number>()
+  const keywordsByHallId = new Map<string, Set<string>>()
+  const keywordsByHallName = new Map<string, Set<string>>()
+
+  exhibits.forEach((exhibit) => {
+    const keywordParts = [
+      exhibit.name,
+      exhibit.hallName,
+      exhibit.floorLabel,
+      exhibit.description,
+      exhibit.guideTitle,
+      exhibit.guideText,
+      ...(exhibit.tags || [])
+    ].filter(Boolean) as string[]
+
+    if (exhibit.hallId) {
+      countsByHallId.set(exhibit.hallId, (countsByHallId.get(exhibit.hallId) || 0) + 1)
+      const keywords = keywordsByHallId.get(exhibit.hallId) || new Set<string>()
+      keywordParts.forEach((part) => keywords.add(part))
+      keywordsByHallId.set(exhibit.hallId, keywords)
+    }
+
+    if (exhibit.hallName) {
+      countsByHallName.set(exhibit.hallName, (countsByHallName.get(exhibit.hallName) || 0) + 1)
+      const keywords = keywordsByHallName.get(exhibit.hallName) || new Set<string>()
+      keywordParts.forEach((part) => keywords.add(part))
+      keywordsByHallName.set(exhibit.hallName, keywords)
+    }
+  })
+
+  return halls.map((hall) => {
+    const explainCount = countsByHallId.get(hall.id)
+      || countsByHallName.get(hall.name)
+      || hall.exhibitCount
+      || 0
+    const keywordParts = [
+      hall.name,
+      hall.floorLabel,
+      hall.description,
+      hall.area,
+      ...Array.from(keywordsByHallId.get(hall.id) || []),
+      ...Array.from(keywordsByHallName.get(hall.name) || [])
+    ].filter(Boolean) as string[]
+
+    return {
+      id: hall.id,
+      name: hall.name,
+      floorLabel: hall.floorLabel,
+      image: hall.image,
+      explainCount,
+      searchText: normalizeExplainKeyword(keywordParts.join(' '))
+    }
+  })
+}
+```
+
+Expected: the exact logic currently in `src/pages/index/index.vue` is moved without behavior changes.
+
+- [ ] **Step 3: Update ExplainHallSelect component type ownership**
+
+In `src/components/explain/ExplainHallSelect.vue`, replace the local `ExplainHallSelectItem` interface with this import/export block after `import { computed } from 'vue'`:
+
+```ts
+import type {
+  ExplainHallSelectItem as ExplainHallSelectItemViewModel
+} from '@/view-models/explainViewModels'
+
+export type ExplainHallSelectItem = ExplainHallSelectItemViewModel
+```
+
+Remove this old interface from the same file:
+
+```ts
+export interface ExplainHallSelectItem {
+  id: string
+  name: string
+  floorLabel?: string
+  image?: string
+  explainCount: number
+  searchText: string
+}
+```
+
+Expected: component props retain the same shape, but the presentation contract is defined in `src/view-models/explainViewModels.ts`.
+
+- [ ] **Step 4: Run type-check for explain view-model migration**
+
+Run:
+
+```powershell
+pnpm type-check
+```
+
+Expected: PASS or only failures from `src/pages/index/index.vue` until Task 5 is applied.
+
+- [ ] **Step 5: Commit if authorized**
+
+Do not commit unless the user explicitly authorizes commits in this session. If authorized, run:
+
+```powershell
+git add src/view-models/explainViewModels.ts src/components/explain/ExplainHallSelect.vue
+git commit -m @'
+refactor: move explain hall selector mapping to view models
+
+Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
+'@
+```
+
+Expected: one commit containing explain hall selector view-model ownership.
+
+---
+
+### Task 4: Add Data-Source Mode Diagnostics
+
+**Files:**
+- Modify: `src/config/dataSource.ts`
+- Modify: `src/components/navigation/GuideMapShell.vue`
+
+- [ ] **Step 1: Add diagnostics helper to dataSource config**
+
+At the end of `src/config/dataSource.ts`, after `getSgsMapTargetOrigin`, add:
+
+```ts
+export const getGuideDataSourceDiagnostics = () => {
+  const usesSgsRepository = dataSourceConfig.mode === 'api' || dataSourceConfig.mode === 'sdk'
+  const usesSgsRenderer = dataSourceConfig.mode === 'sdk'
+
+  return {
+    mode: dataSourceConfig.mode,
+    guideRepository: usesSgsRepository ? 'SgsSdkGuideRepository' : 'StaticGuideRepository',
+    mapRenderer: usesSgsRenderer ? 'SgsMapRenderer' : 'ThreeMap',
+    apiBaseUrl: usesSgsRepository ? dataSourceConfig.sgsApiBaseUrl : '',
+    mapId: usesSgsRepository ? dataSourceConfig.sgsMapId : '',
+    sdkScriptUrl: usesSgsRenderer ? dataSourceConfig.sgsSdkScriptUrl : '',
+    sdkEngineUrl: usesSgsRenderer ? dataSourceConfig.sgsMapEngineUrl : ''
+  }
+}
+```
+
+Expected: diagnostics are centralized with mode parsing and do not read raw env vars in page/component code.
+
+- [ ] **Step 2: Import diagnostics helper in GuideMapShell**
+
+In `src/components/navigation/GuideMapShell.vue`, change the H5 config import from:
+
+```ts
+import {
+  isSgsSdkMode
+} from '@/config/dataSource'
+```
+
+to:
+
+```ts
+import {
+  getGuideDataSourceDiagnostics,
+  isSgsSdkMode
+} from '@/config/dataSource'
+```
+
+Also change the Vue import from:
+
+```ts
+import { computed, ref } from 'vue'
+```
+
+to:
+
+```ts
+import { computed, onMounted, ref } from 'vue'
+```
+
+Expected: `GuideMapShell` can log diagnostics in H5 without changing mode-selection behavior.
+
+- [ ] **Step 3: Log selected mode once in dev H5**
+
+In `src/components/navigation/GuideMapShell.vue`, after `const useSgsMapRenderer = computed(() => isSgsSdkMode())`, add:
+
+```ts
+onMounted(() => {
+  if (!import.meta.env.DEV) return
+
+  const diagnostics = getGuideDataSourceDiagnostics()
+  console.info('[guide-data-source]', diagnostics)
+})
+```
+
+Expected in dev console:
+
+```text
+[guide-data-source] { mode: 'sdk', guideRepository: 'SgsSdkGuideRepository', mapRenderer: 'SgsMapRenderer', ... }
+```
+
+Expected in production build: no diagnostic log.
+
+- [ ] **Step 4: Run type-check for diagnostics change**
+
+Run:
+
+```powershell
+pnpm type-check
+```
+
+Expected: PASS or only failures from `src/pages/index/index.vue` until Task 5 is applied.
+
+- [ ] **Step 5: Commit if authorized**
+
+Do not commit unless the user explicitly authorizes commits in this session. If authorized, run:
+
+```powershell
+git add src/config/dataSource.ts src/components/navigation/GuideMapShell.vue
+git commit -m @'
+feat: expose guide data source diagnostics
+
+Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
+'@
+```
+
+Expected: one commit containing diagnostics only.
+
+---
+
+### Task 5: Replace Remaining Page-Level Mapping In Index Page
+
+**Files:**
+- Modify: `src/pages/index/index.vue`
+
+- [ ] **Step 1: Update imports**
+
+In `src/pages/index/index.vue`, remove this import block:
+
+```ts
+import type {
+  RoutePointOption
+} from '@/components/navigation/RoutePointPicker.vue'
+import ExplainHallSelect, {
+  type ExplainHallSelectItem
+} from '@/components/explain/ExplainHallSelect.vue'
+```
+
+Replace it with:
+
+```ts
+import type {
+  RoutePointOption
+} from '@/components/navigation/RoutePointPicker.vue'
+import ExplainHallSelect from '@/components/explain/ExplainHallSelect.vue'
+```
+
+Then replace the existing domain import:
+
+```ts
+import type {
+  GuideRouteResult,
+  GuideRouteTarget,
+  MuseumExhibit,
+  MuseumFloor
+} from '@/domain/museum'
+```
+
+with:
+
+```ts
+import type {
+  GuideRouteResult,
+  MuseumFloor
+} from '@/domain/museum'
+```
+
+Finally add this view-model import near the other app imports:
+
+```ts
+import {
+  toExplainHallSelectItems,
+  type ExplainHallSelectItem
+} from '@/view-models/explainViewModels'
+import {
+  toRoutePointOptionViewModel,
+  toSelectedGuidePoiCardViewModel
+} from '@/view-models/guideViewModels'
+```
+
+Expected: page no longer imports `GuideRouteTarget` or `ExplainHallSelectItem` from presentation components.
+
+- [ ] **Step 2: Replace selected POI subtitle computed with card view model**
+
+In `src/pages/index/index.vue`, replace this computed block:
+
+```ts
+const selectedGuidePoiSubtitle = computed(() => {
+  const poi = selectedGuidePoi.value
+  if (!poi) return ''
+  const floor = guideFloors.value.find((item) => item.id === poi.floorId)
+  const floorLabel = floor?.label || poi.floorId
+  return `${floorLabel} · ${poi.primaryCategoryZh || '位置预览'}`
+})
+```
+
+with:
+
+```ts
+const selectedGuidePoiCard = computed(() => (
+  selectedGuidePoi.value
+    ? toSelectedGuidePoiCardViewModel(selectedGuidePoi.value, guideFloors.value)
+    : null
+))
+```
+
+Expected: page still owns selected state, but no longer formats selected POI display text inline.
+
+- [ ] **Step 3: Update selected POI card template bindings**
+
+In the selected POI card template near the top of `src/pages/index/index.vue`, replace:
+
+```vue
+<text class="poi-card-title">{{ selectedGuidePoi.name }}</text>
+<text class="poi-card-subtitle">位置预览 · 点按展开操作</text>
+```
+
+with:
+
+```vue
+<text class="poi-card-title">{{ selectedGuidePoiCard?.name }}</text>
+<text class="poi-card-subtitle">{{ selectedGuidePoiCard?.collapsedSubtitle }}</text>
+```
+
+Also replace:
+
+```vue
+<text class="poi-card-title">{{ selectedGuidePoi.name }}</text>
+<text class="poi-card-subtitle">{{ selectedGuidePoiSubtitle }}</text>
+```
+
+with:
+
+```vue
+<text class="poi-card-title">{{ selectedGuidePoiCard?.name }}</text>
+<text class="poi-card-subtitle">{{ selectedGuidePoiCard?.subtitle }}</text>
+```
+
+Expected: user-facing text remains identical.
+
+- [ ] **Step 4: Remove inline route point mapper**
+
+Delete this function from `src/pages/index/index.vue`:
+
+```ts
+const toRoutePointOption = (target: GuideRouteTarget): RoutePointOption => ({
+  poiId: target.poiId,
+  name: target.name,
+  floorId: target.floorId,
+  floorLabel: target.floorLabel,
+  categoryLabel: target.categoryLabel
+})
+```
+
+Expected: route-point option mapping comes from `src/view-models/guideViewModels.ts`.
+
+- [ ] **Step 5: Use guide view-model route mapper**
+
+In `src/pages/index/index.vue`, replace:
+
+```ts
+const options = targets.map(toRoutePointOption)
+```
+
+with:
+
+```ts
+const options: RoutePointOption[] = targets.map(toRoutePointOptionViewModel)
+```
+
+Expected: route planner point list remains unchanged.
+
+- [ ] **Step 6: Remove inline explain hall mapper helpers**
+
+Delete these functions from `src/pages/index/index.vue`:
+
+```ts
+const normalizeExplainKeyword = (value?: string) => (value || '').trim().toLowerCase()
+
+const buildExplainHallItems = (
+  halls: Awaited<ReturnType<typeof explainUseCase.listHalls>>,
+  exhibits: MuseumExhibit[]
+): ExplainHallSelectItem[] => {
+  const countsByHallId = new Map<string, number>()
+  const countsByHallName = new Map<string, number>()
+  const keywordsByHallId = new Map<string, Set<string>>()
+  const keywordsByHallName = new Map<string, Set<string>>()
+
+  exhibits.forEach((exhibit) => {
+    const keywordParts = [
+      exhibit.name,
+      exhibit.hallName,
+      exhibit.floorLabel,
+      exhibit.description,
+      exhibit.guideTitle,
+      exhibit.guideText,
+      ...(exhibit.tags || [])
+    ].filter(Boolean) as string[]
+
+    if (exhibit.hallId) {
+      countsByHallId.set(exhibit.hallId, (countsByHallId.get(exhibit.hallId) || 0) + 1)
+      const keywords = keywordsByHallId.get(exhibit.hallId) || new Set<string>()
+      keywordParts.forEach((part) => keywords.add(part))
+      keywordsByHallId.set(exhibit.hallId, keywords)
+    }
+
+    if (exhibit.hallName) {
+      countsByHallName.set(exhibit.hallName, (countsByHallName.get(exhibit.hallName) || 0) + 1)
+      const keywords = keywordsByHallName.get(exhibit.hallName) || new Set<string>()
+      keywordParts.forEach((part) => keywords.add(part))
+      keywordsByHallName.set(exhibit.hallName, keywords)
+    }
+  })
+
+  return halls.map((hall) => {
+    const explainCount = countsByHallId.get(hall.id)
+      || countsByHallName.get(hall.name)
+      || hall.exhibitCount
+      || 0
+    const keywordParts = [
+      hall.name,
+      hall.floorLabel,
+      hall.description,
+      hall.area,
+      ...Array.from(keywordsByHallId.get(hall.id) || []),
+      ...Array.from(keywordsByHallName.get(hall.name) || [])
+    ].filter(Boolean) as string[]
+
+    return {
+      id: hall.id,
+      name: hall.name,
+      floorLabel: hall.floorLabel,
+      image: hall.image,
+      explainCount,
+      searchText: normalizeExplainKeyword(keywordParts.join(' '))
+    }
+  })
+}
+```
+
+Expected: `src/pages/index/index.vue` no longer owns explain hall card mapping.
+
+- [ ] **Step 7: Use explain view-model hall mapper**
+
+In `loadExplainExhibits`, replace:
+
+```ts
+explainHallItems.value = buildExplainHallItems(halls, exhibits)
+```
+
+with:
+
+```ts
+explainHallItems.value = toExplainHallSelectItems(halls, exhibits)
+```
+
+Expected: explain hall selector still shows the same halls and counts.
+
+- [ ] **Step 8: Run type-check after index page migration**
+
+Run:
+
+```powershell
+pnpm type-check
+```
+
+Expected: PASS.
+
+- [ ] **Step 9: Commit if authorized**
+
+Do not commit unless the user explicitly authorizes commits in this session. If authorized, run:
+
+```powershell
+git add src/pages/index/index.vue
+git commit -m @'
+refactor: use view models on guide index page
+
+Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
+'@
+```
+
+Expected: one commit containing only index page mapping removal.
+
+---
+
+### Task 6: Verify Data-Source Switch Modes
+
+**Files:**
+- No source edits expected.
+
+- [ ] **Step 1: Verify no forbidden page imports exist**
+
+Run these searches:
+
+```powershell
+Select-String -Path "src/pages/**/*.vue" -Pattern "SGSMapSDK|SgsMapService|sgsSdkApiProvider|/app-api/gis/sdk" -CaseSensitive
+Select-String -Path "src/components/**/*.vue" -Pattern "sgsSdkApiProvider|/app-api/gis/sdk" -CaseSensitive
+```
+
+Expected: no matches in pages. Component matches should not include generic UI components; `SgsMapRenderer.vue` may import `SgsMapService`, which is allowed because it is the SDK renderer boundary.
+
+- [ ] **Step 2: Verify mode switch source code**
+
+Run:
+
+```powershell
+Select-String -Path "src/repositories/createGuideRepository.ts","src/components/navigation/GuideMapShell.vue","src/config/dataSource.ts" -Pattern "dataSourceConfig.mode|isSgsSdkMode|SgsSdkGuideRepository|StaticGuideRepository|SgsMapRenderer|ThreeMap" -CaseSensitive
+```
+
+Expected evidence:
+
+```text
+createGuideRepository.ts: api/sdk -> SgsSdkGuideRepository, static -> StaticGuideRepository
+GuideMapShell.vue: sdk -> SgsMapRenderer, otherwise -> ThreeMap
+config/dataSource.ts: mode supports static/api/sdk
+```
+
+- [ ] **Step 3: Run type-check**
+
+Run:
+
+```powershell
+pnpm type-check
+```
+
+Expected: PASS.
+
+- [ ] **Step 4: Run lint because shell/page/view-model files changed**
+
+Run:
+
+```powershell
+pnpm lint
+```
+
+Expected: PASS. If warnings appear but exit code is 0, record them as debt in the final report.
+
+- [ ] **Step 5: Run H5 build because shell/page UI files changed**
+
+This command writes `dist`.
+
+Run:
+
+```powershell
+pnpm build:h5
+```
+
+Expected: PASS and `dist/build/h5` or the project’s configured H5 output is updated.
+
+- [ ] **Step 6: Commit verification-related source edits if authorized**
+
+If Task 6 made no source edits, do not commit. If a small verification fix was required and the user has authorized commits, run:
+
+```powershell
+git add src
+git commit -m @'
+chore: verify guide data source switching
+
+Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
+'@
+```
+
+Expected: commit only source fixes made during verification.
+
+---
+
+## Acceptance Criteria
+
+- `VITE_DATA_SOURCE_MODE=static` continues to use `StaticGuideRepository` and `ThreeMap`.
+- `VITE_DATA_SOURCE_MODE=api` continues to use `SgsSdkGuideRepository` and `ThreeMap`.
+- `VITE_DATA_SOURCE_MODE=sdk` continues to use `SgsSdkGuideRepository` and `SgsMapRenderer`.
+- Pages and ordinary presentation components do not directly import `SGSMapSDK`, `SgsMapService`, `sgsSdkApiProvider`, or raw `/app-api/gis/sdk/*` URLs.
+- Remaining route picker, selected POI card, and explain hall selector mapping is owned by `src/view-models/*` instead of `src/pages/index/index.vue`.
+- Route readiness gate remains unchanged; no user-facing copy claims certified route navigation.
+- `pnpm type-check` passes.
+- `pnpm lint` passes.
+- `pnpm build:h5` passes.
+
+## Self-Review
+
+- Spec coverage: plan covers data-source switching, renderer switching preservation, middle-layer/view-model convergence, forbidden direct imports, diagnostics, and quality gates.
+- Placeholder scan: no TBD/TODO/fill-in-later instructions remain; all code snippets are concrete.
+- Type consistency: `RoutePointOptionViewModel` is aliased as `RoutePointOption`, `ExplainHallSelectItem` is exported from the view-model layer and aliased by the component, and the page imports the mapper names defined in the tasks.