diff --git a/.hermes/shared-memory/decision-log.md b/.hermes/shared-memory/decision-log.md
index 32626c48..4ac34916 100644
--- a/.hermes/shared-memory/decision-log.md
+++ b/.hermes/shared-memory/decision-log.md
@@ -1265,6 +1265,14 @@
 - 验证方式：`npm run test -- src/components/rpg-entry/rpgEntryPublicGalleryViewModel.test.ts`、`npm run test -- src/components/rpg-entry/RpgEntryHomeView.recharge.test.tsx -t "category"`、针对变更文件执行 ESLint、`npm run typecheck`、`npm run check:encoding`。
 - 关联文档：`docs/technical/【前端架构】PublicGalleryViewModel收口计划-2026-06-03.md`。
 
+## 2026-06-03 Match3D Runtime Profile 收口
+
+- 背景：`PlatformEntryFlowShellImpl.tsx` 内仍直接承载抓大鹅公开详情转 work、session draft 转 profile、生成背景资产提升、runtime active profile 选择和 run / profile / public detail 素材优先级，平台壳需要理解抓大鹅生成素材内部结构。
+- 决策：新增 `src/components/platform-entry/platformMatch3DRuntimeProfile.ts` 作为抓大鹅 runtime profile Module，Interface 收口 `mapPublicWorkDetailToMatch3DWork`、`buildMatch3DProfileFromSession`、`normalizeMatch3DWorkForRuntimeUi`、`mapMatch3DWorksForRuntimeUi`、`promoteMatch3DGeneratedBackgroundAsset`、`hasMatch3DRuntimeAsset`、`hasMatch3DRuntimeBackgroundAsset`、`resolveActiveMatch3DRuntimeProfile` 与 runtime item/background/backgroundImage 解析函数；平台壳只保留启动 run、预加载、路由、错误和 state 编排。
+- 影响范围：抓大鹅作品架、公开详情试玩、推荐 runtime、正式 runtime 与草稿结果页试玩前素材规范化。
+- 验证方式：`npm run test -- src/components/platform-entry/platformMatch3DRuntimeProfile.test.ts`、`npm run test -- src/components/rpg-entry/RpgEntryFlowShell.agent.interaction.test.tsx -t "match3d|抓大鹅"`、针对新 Module 执行 ESLint、`npm run typecheck`、`npm run check:encoding`。
+- 关联文档：`docs/technical/【前端架构】Match3DRuntimeProfile收口计划-2026-06-03.md`。
+
 ## 2026-06-03 Public Work Presentation 收口
 
 - 背景：作品卡、推荐 runtime meta、排行项、分类项、搜索结果和桌面 hero 共用玩法类型 label 与紧凑计数格式，但规则仍在 `RpgEntryHomeView.tsx` 页面 Implementation 内。
diff --git a/docs/README.md b/docs/README.md
index 8f3b7c0e..b4d20565 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -45,6 +45,8 @@ AI 文字游戏模板接入以 [AI_NATIVE_TEXT_GAME_TEMPLATE_MOKU_REFERENCE_PRD_
 
 小游戏 runtime client 的路径编码、JSON 请求、runtime guest auth 与 retry 选项收口到 `src/services/runtimeRequest.ts`，Match3D、SquareHole、Big Fish、Bark Battle、Puzzle 公开 / 推荐运行态请求、Jump Hop / Wooden Fish 正式 run 请求和 Visual Novel 局部 JSON runtime 请求已先迁移，规则见 [【前端架构】RuntimeClientFamily收口计划-2026-06-03.md](./technical/%E3%80%90%E5%89%8D%E7%AB%AF%E6%9E%B6%E6%9E%84%E3%80%91RuntimeClientFamily%E6%94%B6%E5%8F%A3%E8%AE%A1%E5%88%92-2026-06-03.md)。
 
+抓大鹅 runtime profile 的公开详情转 work、session draft 转 profile、生成背景资产提升和 run/profile/public detail 素材优先级收口到 `src/components/platform-entry/platformMatch3DRuntimeProfile.ts`，规则见 [【前端架构】Match3DRuntimeProfile收口计划-2026-06-03.md](./technical/%E3%80%90%E5%89%8D%E7%AB%AF%E6%9E%B6%E6%9E%84%E3%80%91Match3DRuntimeProfile%E6%94%B6%E5%8F%A3%E8%AE%A1%E5%88%92-2026-06-03.md)。
+
 公开作品分类选项、搜索、跨来源去重、今日筛选、排行排序和时间戳解析收口到 `src/components/rpg-entry/rpgEntryPublicGalleryViewModel.ts`，规则见 [【前端架构】PublicGalleryViewModel收口计划-2026-06-03.md](./technical/%E3%80%90%E5%89%8D%E7%AB%AF%E6%9E%B6%E6%9E%84%E3%80%91PublicGalleryViewModel%E6%94%B6%E5%8F%A3%E8%AE%A1%E5%88%92-2026-06-03.md)。
 
 公开作品的玩法类型 label、公开作者 lookup 与游玩 / 改造 / 点赞等紧凑计数格式收口到 `src/components/rpg-entry/rpgEntryWorldPresentation.ts`，规则见 [【前端架构】PublicWorkPresentation收口计划-2026-06-03.md](./technical/%E3%80%90%E5%89%8D%E7%AB%AF%E6%9E%B6%E6%9E%84%E3%80%91PublicWorkPresentation%E6%94%B6%E5%8F%A3%E8%AE%A1%E5%88%92-2026-06-03.md)。
diff --git a/docs/technical/【前端架构】Match3DRuntimeProfile收口计划-2026-06-03.md b/docs/technical/【前端架构】Match3DRuntimeProfile收口计划-2026-06-03.md
new file mode 100644
index 00000000..a39d835b
--- /dev/null
+++ b/docs/technical/【前端架构】Match3DRuntimeProfile收口计划-2026-06-03.md
@@ -0,0 +1,34 @@
+# 【前端架构】Match3D Runtime Profile 收口计划
+
+## 背景
+
+`PlatformEntryFlowShellImpl.tsx` 同时编排抓大鹅创作、作品详情、推荐 runtime 和正式 runtime。运行态启动前的 profile 规范化、公开详情转 work、生成背景资产提升、run / profile / public detail 优先级和 runtime 素材选择原本都在平台壳 **Implementation** 内，导致平台壳必须理解抓大鹅生成素材的内部结构。
+
+## 决策
+
+新增 `src/components/platform-entry/platformMatch3DRuntimeProfile.ts`，作为抓大鹅 runtime profile **Module**。该 **Module** 的 **Interface** 收口为：
+
+- `mapPublicWorkDetailToMatch3DWork(entry)`：把公开作品详情映射为可启动 runtime 的 Match3D work，并补齐生成背景资产。
+- `buildMatch3DProfileFromSession(session)`：从创作 session draft 生成 runtime profile。
+- `normalizeMatch3DWorkForRuntimeUi(profile)` / `mapMatch3DWorksForRuntimeUi(profiles)`：统一作品列表进入 UI / runtime 前的素材规范化。
+- `promoteMatch3DGeneratedBackgroundAsset(profile)`：从 `generatedBackgroundAsset` 或 `generatedItemAssets[].backgroundAsset` 提升背景图、对象 key 与 prompt。
+- `hasMatch3DRuntimeAsset(profile.generatedItemAssets)` / `hasMatch3DRuntimeBackgroundAsset(profile)`：统一判断 runtime 是否具备物品与背景素材。
+- `resolveActiveMatch3DRuntimeProfile(run, runtimeProfile, profile)`：按 run 的 `profileId` 选择当前 profile，避免切屏时误用旧草稿。
+- `resolveMatch3DRuntimeGeneratedItemAssets(...)`、`resolveMatch3DRuntimeGeneratedBackgroundAsset(...)`、`resolveMatch3DRuntimeBackgroundImageSrc(...)`：统一 run / profile / public detail 的素材优先级。
+
+`PlatformEntryFlowShellImpl.tsx` 只保留启动 run、预加载、路由、错误和 state 编排；抓大鹅素材规则集中到该 **Module**，提升 **Locality** 与测试 **Leverage**。
+
+## 约定
+
+- 公开详情补 runtime 素材时，只有 `profileId` 与 run 匹配才优先使用公开详情；错配时不得污染当前 run。
+- 当前启动时拿到的 `runtimeProfile` 优先于旧草稿 profile；若 run 指向旧草稿 profile，才使用草稿 profile。
+- 背景资产提升不得覆盖已有显式 `backgroundImageSrc` / `backgroundImageObjectKey` / `generatedBackgroundAsset`，只补缺。
+- 本 **Module** 只放纯 profile / asset 规则，不引入启动 run、预加载、URL、状态机或 UI 副作用。
+
+## 验证
+
+- `npm run test -- src/components/platform-entry/platformMatch3DRuntimeProfile.test.ts`
+- `npm run test -- src/components/rpg-entry/RpgEntryFlowShell.agent.interaction.test.tsx -t "match3d|抓大鹅"`
+- `npm run typecheck`
+- `npm run check:encoding`
+- 针对新 Module 与测试执行 ESLint；`PlatformEntryFlowShellImpl.tsx` 保留既有 hook dependency warnings，不在本切片扩大处理。
diff --git a/src/components/platform-entry/PlatformEntryFlowShellImpl.tsx b/src/components/platform-entry/PlatformEntryFlowShellImpl.tsx
index e7ee35c6..48e7019c 100644
--- a/src/components/platform-entry/PlatformEntryFlowShellImpl.tsx
+++ b/src/components/platform-entry/PlatformEntryFlowShellImpl.tsx
@@ -49,7 +49,6 @@ import type {
 } from '../../../packages/shared/src/contracts/match3dAgent';
 import type { Match3DRunSnapshot } from '../../../packages/shared/src/contracts/match3dRuntime';
 import type {
-  Match3DGeneratedBackgroundAsset,
   Match3DGeneratedItemAsset,
   Match3DWorkProfile,
   Match3DWorkSummary,
@@ -202,7 +201,6 @@ import {
   listMatch3DWorks,
 } from '../../services/match3d-works';
 import {
-  hasMatch3DGeneratedImageAsset,
   mergeMatch3DGeneratedItemAssetsForRuntime,
   normalizeMatch3DGeneratedItemAssetsForRuntime,
   preloadMatch3DGeneratedRuntimeAssets,
@@ -442,6 +440,19 @@ import {
   type PlatformErrorDialogPayload,
 } from './PlatformErrorDialog';
 import { PlatformFeedbackView } from './PlatformFeedbackView';
+import {
+  buildMatch3DProfileFromSession,
+  hasMatch3DRuntimeAsset,
+  hasMatch3DRuntimeBackgroundAsset,
+  mapMatch3DWorksForRuntimeUi,
+  mapPublicWorkDetailToMatch3DWork,
+  normalizeMatch3DWorkForRuntimeUi,
+  promoteMatch3DGeneratedBackgroundAsset,
+  resolveActiveMatch3DRuntimeProfile,
+  resolveMatch3DRuntimeBackgroundImageSrc,
+  resolveMatch3DRuntimeGeneratedBackgroundAsset,
+  resolveMatch3DRuntimeGeneratedItemAssets,
+} from './platformMatch3DRuntimeProfile';
 import {
   getPlatformPublicGalleryEntryKey,
   getPlatformRecommendRuntimeKind,
@@ -811,317 +822,6 @@ function mapVisualNovelWorkDetailToSession(
   };
 }
 
-function mapPublicWorkDetailToMatch3DWork(
-  entry: PlatformPublicGalleryCard,
-): Match3DWorkSummary | null {
-  if (!isMatch3DGalleryEntry(entry)) {
-    return null;
-  }
-
-  return promoteMatch3DGeneratedBackgroundAsset({
-    workId: entry.workId,
-    profileId: entry.profileId,
-    ownerUserId: entry.ownerUserId,
-    sourceSessionId:
-      'sourceSessionId' in entry && typeof entry.sourceSessionId === 'string'
-        ? entry.sourceSessionId
-        : null,
-    gameName: entry.worldName,
-    themeText: entry.themeTags[0] ?? '经典消除',
-    summary: entry.summaryText,
-    tags: entry.themeTags,
-    coverImageSrc: entry.coverImageSrc,
-    referenceImageSrc: null,
-    clearCount: 12,
-    difficulty: 4,
-    publicationStatus: 'published',
-    playCount: entry.playCount ?? 0,
-    updatedAt: entry.updatedAt,
-    publishedAt: entry.publishedAt,
-    publishReady: true,
-    backgroundPrompt: entry.backgroundPrompt ?? null,
-    backgroundImageSrc: entry.backgroundImageSrc ?? null,
-    backgroundImageObjectKey: entry.backgroundImageObjectKey ?? null,
-    generatedBackgroundAsset:
-      entry.generatedBackgroundAsset ??
-      entry.generatedItemAssets
-        ?.map((asset) => asset.backgroundAsset ?? null)
-        .find(Boolean) ??
-      null,
-    generatedItemAssets: normalizeMatch3DGeneratedItemAssetsForRuntime(
-      entry.generatedItemAssets ?? [],
-    ),
-  });
-}
-
-function findMatch3DGeneratedBackgroundAsset(
-  generatedItemAssets: readonly Match3DGeneratedItemAsset[] | null | undefined,
-): Match3DGeneratedBackgroundAsset | null {
-  return (
-    generatedItemAssets
-      ?.map((asset) => asset.backgroundAsset ?? null)
-      .find(Boolean) ?? null
-  );
-}
-
-function promoteMatch3DGeneratedBackgroundAsset<
-  T extends Pick<
-    Match3DWorkSummary,
-    | 'backgroundPrompt'
-    | 'backgroundImageSrc'
-    | 'backgroundImageObjectKey'
-    | 'generatedBackgroundAsset'
-    | 'generatedItemAssets'
-  >,
->(profile: T): T {
-  const backgroundAsset =
-    profile.generatedBackgroundAsset ??
-    findMatch3DGeneratedBackgroundAsset(profile.generatedItemAssets);
-  if (!backgroundAsset) {
-    return profile;
-  }
-
-  return {
-    ...profile,
-    backgroundPrompt:
-      profile.backgroundPrompt ?? backgroundAsset.prompt ?? null,
-    backgroundImageSrc:
-      profile.backgroundImageSrc ??
-      backgroundAsset.imageSrc ??
-      backgroundAsset.imageObjectKey ??
-      null,
-    backgroundImageObjectKey:
-      profile.backgroundImageObjectKey ??
-      backgroundAsset.imageObjectKey ??
-      backgroundAsset.imageSrc ??
-      null,
-    generatedBackgroundAsset:
-      profile.generatedBackgroundAsset ?? backgroundAsset,
-  };
-}
-
-function normalizeMatch3DWorkForRuntimeUi<T extends Match3DWorkSummary>(
-  profile: T,
-): T {
-  return promoteMatch3DGeneratedBackgroundAsset({
-    ...profile,
-    generatedItemAssets: normalizeMatch3DGeneratedItemAssetsForRuntime(
-      profile.generatedItemAssets,
-    ),
-  });
-}
-
-function mapMatch3DWorksForRuntimeUi<T extends Match3DWorkSummary>(
-  profiles: readonly T[],
-): T[] {
-  return profiles.map(normalizeMatch3DWorkForRuntimeUi);
-}
-
-function buildMatch3DProfileFromSession(
-  session: Match3DAgentSessionSnapshot | null,
-): Match3DWorkProfile | null {
-  const draft = session?.draft;
-  if (!session || !draft?.profileId) {
-    return null;
-  }
-
-  const now = session.updatedAt || new Date().toISOString();
-  const generatedItemAssets = normalizeMatch3DGeneratedItemAssetsForRuntime(
-    draft.generatedItemAssets,
-  );
-  return promoteMatch3DGeneratedBackgroundAsset({
-    workId: draft.profileId,
-    profileId: draft.profileId,
-    ownerUserId: 'current-user',
-    sourceSessionId: session.sessionId,
-    gameName: draft.gameName,
-    themeText: draft.themeText,
-    summary: draft.summary ?? draft.summaryText ?? '',
-    tags: draft.tags,
-    coverImageSrc: draft.coverImageSrc ?? draft.referenceImageSrc ?? null,
-    referenceImageSrc: draft.referenceImageSrc ?? null,
-    clearCount: draft.clearCount,
-    difficulty: draft.difficulty,
-    publicationStatus: 'draft',
-    playCount: 0,
-    updatedAt: now,
-    publishedAt: null,
-    publishReady: Boolean(draft.publishReady),
-    backgroundPrompt: draft.backgroundPrompt ?? null,
-    backgroundImageSrc: draft.backgroundImageSrc ?? null,
-    backgroundImageObjectKey: draft.backgroundImageObjectKey ?? null,
-    generatedBackgroundAsset: draft.generatedBackgroundAsset ?? null,
-    generatedItemAssets,
-  });
-}
-
-function hasMatch3DRuntimeAsset(
-  assets: readonly Match3DGeneratedItemAsset[] | null | undefined,
-) {
-  return hasMatch3DGeneratedImageAsset(assets);
-}
-
-function hasMatch3DRuntimeBackgroundAsset(
-  profile: Pick<
-    Match3DWorkSummary,
-    | 'backgroundImageSrc'
-    | 'backgroundImageObjectKey'
-    | 'generatedBackgroundAsset'
-    | 'generatedItemAssets'
-  >,
-) {
-  return Boolean(
-    profile.backgroundImageSrc?.trim() ||
-      profile.backgroundImageObjectKey?.trim() ||
-      profile.generatedBackgroundAsset?.imageSrc?.trim() ||
-      profile.generatedBackgroundAsset?.imageObjectKey?.trim() ||
-      profile.generatedBackgroundAsset?.containerImageSrc?.trim() ||
-      profile.generatedBackgroundAsset?.containerImageObjectKey?.trim() ||
-      profile.generatedItemAssets?.some(
-        (asset) =>
-          asset.backgroundAsset?.imageSrc?.trim() ||
-          asset.backgroundAsset?.imageObjectKey?.trim() ||
-          asset.backgroundAsset?.containerImageSrc?.trim() ||
-          asset.backgroundAsset?.containerImageObjectKey?.trim(),
-      ),
-  );
-}
-
-function resolveMatch3DRuntimeGeneratedItemAssets(
-  run: Match3DRunSnapshot | null,
-  profile: Match3DWorkProfile | null,
-  publicWorkDetail: PlatformPublicGalleryCard | null,
-) {
-  const runProfileId = run?.profileId?.trim() ?? '';
-  const profileAssets = profile?.generatedItemAssets ?? [];
-  const publicDetailAssets =
-    publicWorkDetail && isMatch3DGalleryEntry(publicWorkDetail)
-      ? (publicWorkDetail.generatedItemAssets ?? [])
-      : [];
-
-  if (runProfileId && profile?.profileId === runProfileId) {
-    if (hasMatch3DRuntimeAsset(profileAssets)) {
-      return normalizeMatch3DGeneratedItemAssetsForRuntime(profileAssets);
-    }
-
-    if (
-      publicWorkDetail &&
-      isMatch3DGalleryEntry(publicWorkDetail) &&
-      publicWorkDetail.profileId === runProfileId
-    ) {
-      return hasMatch3DRuntimeAsset(publicDetailAssets)
-        ? mergeMatch3DGeneratedItemAssetsForRuntime(
-            publicDetailAssets,
-            profileAssets,
-          )
-        : normalizeMatch3DGeneratedItemAssetsForRuntime(profileAssets);
-    }
-
-    return normalizeMatch3DGeneratedItemAssetsForRuntime(profileAssets);
-  }
-
-  if (
-    runProfileId &&
-    publicWorkDetail &&
-    isMatch3DGalleryEntry(publicWorkDetail) &&
-    publicWorkDetail.profileId === runProfileId
-  ) {
-    return normalizeMatch3DGeneratedItemAssetsForRuntime(publicDetailAssets);
-  }
-
-  if (hasMatch3DRuntimeAsset(profileAssets)) {
-    return normalizeMatch3DGeneratedItemAssetsForRuntime(profileAssets);
-  }
-  return publicDetailAssets.length > 0
-    ? normalizeMatch3DGeneratedItemAssetsForRuntime(publicDetailAssets)
-    : normalizeMatch3DGeneratedItemAssetsForRuntime(profileAssets);
-}
-
-function resolveMatch3DRuntimeGeneratedBackgroundAsset(
-  run: Match3DRunSnapshot | null,
-  profile: Match3DWorkProfile | null,
-  publicWorkDetail: PlatformPublicGalleryCard | null,
-) {
-  const runProfileId = run?.profileId?.trim() ?? '';
-  const profileBackground = profile
-    ? (promoteMatch3DGeneratedBackgroundAsset(profile)
-        .generatedBackgroundAsset ?? null)
-    : null;
-  const publicBackground =
-    publicWorkDetail && isMatch3DGalleryEntry(publicWorkDetail)
-      ? (promoteMatch3DGeneratedBackgroundAsset(publicWorkDetail)
-          .generatedBackgroundAsset ?? null)
-      : null;
-
-  if (runProfileId && profile?.profileId === runProfileId) {
-    return profileBackground ?? publicBackground;
-  }
-  if (
-    runProfileId &&
-    publicWorkDetail &&
-    isMatch3DGalleryEntry(publicWorkDetail) &&
-    publicWorkDetail.profileId === runProfileId
-  ) {
-    return publicBackground ?? profileBackground;
-  }
-  return profileBackground ?? publicBackground;
-}
-
-function resolveActiveMatch3DRuntimeProfile(
-  run: Match3DRunSnapshot | null,
-  runtimeProfile: Match3DWorkProfile | null,
-  profile: Match3DWorkProfile | null,
-) {
-  const runProfileId = run?.profileId?.trim() ?? '';
-  if (runProfileId && runtimeProfile?.profileId === runProfileId) {
-    return runtimeProfile;
-  }
-  if (runProfileId && profile?.profileId === runProfileId) {
-    return profile;
-  }
-  return runtimeProfile ?? profile;
-}
-
-function resolveMatch3DRuntimeBackgroundImageSrc(
-  run: Match3DRunSnapshot | null,
-  profile: Match3DWorkProfile | null,
-  publicWorkDetail: PlatformPublicGalleryCard | null,
-) {
-  const runProfileId = run?.profileId?.trim() ?? '';
-  const resolvedProfile = profile
-    ? promoteMatch3DGeneratedBackgroundAsset(profile)
-    : null;
-  const resolvedPublicWork =
-    publicWorkDetail && isMatch3DGalleryEntry(publicWorkDetail)
-      ? promoteMatch3DGeneratedBackgroundAsset(publicWorkDetail)
-      : null;
-  const profileBackground =
-    resolvedProfile?.backgroundImageSrc?.trim() ||
-    resolvedProfile?.generatedBackgroundAsset?.imageSrc?.trim() ||
-    resolvedProfile?.backgroundImageObjectKey?.trim() ||
-    resolvedProfile?.generatedBackgroundAsset?.imageObjectKey?.trim() ||
-    '';
-  const publicBackground =
-    resolvedPublicWork?.backgroundImageSrc?.trim() ||
-    resolvedPublicWork?.generatedBackgroundAsset?.imageSrc?.trim() ||
-    resolvedPublicWork?.backgroundImageObjectKey?.trim() ||
-    resolvedPublicWork?.generatedBackgroundAsset?.imageObjectKey?.trim() ||
-    '';
-
-  if (runProfileId && profile?.profileId === runProfileId) {
-    return profileBackground || publicBackground || null;
-  }
-  if (
-    runProfileId &&
-    publicWorkDetail &&
-    isMatch3DGalleryEntry(publicWorkDetail) &&
-    publicWorkDetail.profileId === runProfileId
-  ) {
-    return publicBackground || profileBackground || null;
-  }
-  return profileBackground || publicBackground || null;
-}
-
 function resolveMatch3DGenerationStateFromAssets(
   current: MiniGameDraftGenerationState | null,
   assets: readonly Match3DGeneratedItemAsset[] | null | undefined,
diff --git a/src/components/platform-entry/platformMatch3DRuntimeProfile.test.ts b/src/components/platform-entry/platformMatch3DRuntimeProfile.test.ts
new file mode 100644
index 00000000..56e98a95
--- /dev/null
+++ b/src/components/platform-entry/platformMatch3DRuntimeProfile.test.ts
@@ -0,0 +1,268 @@
+import { expect, test } from 'vitest';
+
+import type { Match3DAgentSessionSnapshot } from '../../../packages/shared/src/contracts/match3dAgent';
+import type { Match3DRunSnapshot } from '../../../packages/shared/src/contracts/match3dRuntime';
+import type {
+  Match3DGeneratedBackgroundAsset,
+  Match3DGeneratedItemAsset,
+  Match3DWorkProfile,
+} from '../../../packages/shared/src/contracts/match3dWorks';
+import type { PlatformMatch3DGalleryCard } from '../rpg-entry/rpgEntryWorldPresentation';
+import {
+  buildMatch3DProfileFromSession,
+  mapPublicWorkDetailToMatch3DWork,
+  resolveActiveMatch3DRuntimeProfile,
+  resolveMatch3DRuntimeBackgroundImageSrc,
+  resolveMatch3DRuntimeGeneratedBackgroundAsset,
+  resolveMatch3DRuntimeGeneratedItemAssets,
+} from './platformMatch3DRuntimeProfile';
+
+function buildBackgroundAsset(
+  overrides: Partial<Match3DGeneratedBackgroundAsset> = {},
+): Match3DGeneratedBackgroundAsset {
+  return {
+    prompt: '森林棋盘',
+    imageSrc: '/generated/match3d/background.png',
+    imageObjectKey: null,
+    status: 'ready',
+    ...overrides,
+  };
+}
+
+function buildItemAsset(
+  overrides: Partial<Match3DGeneratedItemAsset> = {},
+): Match3DGeneratedItemAsset {
+  return {
+    itemId: 'item-1',
+    itemName: '蘑菇',
+    imageSrc: '/generated/match3d/item.png',
+    imageObjectKey: null,
+    status: 'image_ready',
+    ...overrides,
+  };
+}
+
+function buildProfile(
+  overrides: Partial<Match3DWorkProfile> = {},
+): Match3DWorkProfile {
+  return {
+    workId: 'match3d-work-1',
+    profileId: 'match3d-profile-1',
+    ownerUserId: 'user-1',
+    sourceSessionId: 'match3d-session-1',
+    gameName: '森林抓鹅',
+    themeText: '森林',
+    summary: '找出蘑菇。',
+    tags: ['森林', '蘑菇'],
+    coverImageSrc: '/cover.png',
+    referenceImageSrc: null,
+    clearCount: 12,
+    difficulty: 4,
+    publicationStatus: 'published',
+    playCount: 1,
+    updatedAt: '2026-05-20T00:00:00.000Z',
+    publishedAt: '2026-05-20T00:00:00.000Z',
+    publishReady: true,
+    backgroundPrompt: null,
+    backgroundImageSrc: null,
+    backgroundImageObjectKey: null,
+    generatedBackgroundAsset: null,
+    generatedItemAssets: [buildItemAsset()],
+    ...overrides,
+  };
+}
+
+function buildRun(overrides: Partial<Match3DRunSnapshot> = {}): Match3DRunSnapshot {
+  return {
+    runId: 'match3d-run-1',
+    profileId: 'match3d-profile-1',
+    status: 'running',
+    snapshotVersion: 1,
+    startedAtMs: 1000,
+    durationLimitMs: 60000,
+    remainingMs: 55000,
+    clearCount: 12,
+    totalItemCount: 12,
+    clearedItemCount: 0,
+    items: [],
+    traySlots: [],
+    ...overrides,
+  };
+}
+
+function buildPublicWork(
+  overrides: Partial<PlatformMatch3DGalleryCard> = {},
+): PlatformMatch3DGalleryCard {
+  return {
+    sourceType: 'match3d',
+    workId: 'match3d-work-1',
+    profileId: 'match3d-profile-1',
+    sourceSessionId: 'match3d-session-1',
+    publicWorkCode: 'M3D-00000001',
+    ownerUserId: 'user-1',
+    authorDisplayName: '玩家',
+    worldName: '森林抓鹅',
+    subtitle: '抓大鹅',
+    summaryText: '找出蘑菇。',
+    coverImageSrc: '/cover.png',
+    backgroundPrompt: null,
+    backgroundImageSrc: null,
+    backgroundImageObjectKey: null,
+    generatedBackgroundAsset: null,
+    generatedItemAssets: [buildItemAsset()],
+    themeTags: ['森林', '蘑菇'],
+    visibility: 'published',
+    publishedAt: '2026-05-20T00:00:00.000Z',
+    updatedAt: '2026-05-20T00:00:00.000Z',
+    ...overrides,
+  };
+}
+
+test('Match3D runtime profile maps public detail and promotes item background asset', () => {
+  const backgroundAsset = buildBackgroundAsset({
+    imageSrc: '/generated/match3d/background-from-item.png',
+    imageObjectKey: 'oss/background-from-item.png',
+  });
+  const work = mapPublicWorkDetailToMatch3DWork(
+    buildPublicWork({
+      generatedBackgroundAsset: null,
+      backgroundImageSrc: null,
+      generatedItemAssets: [
+        buildItemAsset({
+          backgroundAsset,
+        }),
+      ],
+    }),
+  );
+
+  expect(work?.generatedBackgroundAsset).toEqual(backgroundAsset);
+  expect(work?.backgroundImageSrc).toBe(
+    '/generated/match3d/background-from-item.png',
+  );
+  expect(work?.backgroundImageObjectKey).toBe('oss/background-from-item.png');
+});
+
+test('Match3D runtime profile builds draft profile from session snapshot', () => {
+  const backgroundAsset = buildBackgroundAsset({
+    imageSrc: '/generated/match3d/draft-background.png',
+  });
+  const session: Match3DAgentSessionSnapshot = {
+    sessionId: 'match3d-session-draft',
+    currentTurn: 2,
+    progressPercent: 100,
+    stage: 'draft_compiled',
+    anchorPack: {
+      theme: { key: 'theme', label: '主题', value: '森林', status: 'confirmed' },
+      clearCount: {
+        key: 'clearCount',
+        label: '消除数',
+        value: '12',
+        status: 'confirmed',
+      },
+      difficulty: {
+        key: 'difficulty',
+        label: '难度',
+        value: '4',
+        status: 'confirmed',
+      },
+    },
+    messages: [],
+    lastAssistantReply: null,
+    updatedAt: '2026-05-21T00:00:00.000Z',
+    draft: {
+      profileId: 'match3d-draft-profile',
+      gameName: '草稿抓鹅',
+      themeText: '森林',
+      summaryText: '草稿摘要',
+      tags: ['森林'],
+      coverImageSrc: null,
+      referenceImageSrc: '/reference.png',
+      clearCount: 12,
+      difficulty: 4,
+      publishReady: true,
+      generatedItemAssets: [
+        buildItemAsset({
+          backgroundAsset,
+        }),
+      ],
+    },
+  };
+
+  const profile = buildMatch3DProfileFromSession(session);
+
+  expect(profile?.profileId).toBe('match3d-draft-profile');
+  expect(profile?.sourceSessionId).toBe('match3d-session-draft');
+  expect(profile?.publicationStatus).toBe('draft');
+  expect(profile?.coverImageSrc).toBe('/reference.png');
+  expect(profile?.generatedBackgroundAsset).toEqual(backgroundAsset);
+  expect(profile?.backgroundImageSrc).toBe(
+    '/generated/match3d/draft-background.png',
+  );
+});
+
+test('Match3D runtime profile selects active profile by run profile id', () => {
+  const runtimeProfile = buildProfile({
+    profileId: 'runtime-profile',
+    gameName: '运行态抓鹅',
+  });
+  const draftProfile = buildProfile({
+    profileId: 'draft-profile',
+    gameName: '旧草稿抓鹅',
+  });
+
+  expect(
+    resolveActiveMatch3DRuntimeProfile(
+      buildRun({ profileId: 'runtime-profile' }),
+      runtimeProfile,
+      draftProfile,
+    ),
+  ).toBe(runtimeProfile);
+  expect(
+    resolveActiveMatch3DRuntimeProfile(
+      buildRun({ profileId: 'draft-profile' }),
+      runtimeProfile,
+      draftProfile,
+    ),
+  ).toBe(draftProfile);
+});
+
+test('Match3D runtime profile resolves generated assets from matching public detail', () => {
+  const staleProfile = buildProfile({
+    profileId: 'stale-profile',
+    generatedBackgroundAsset: buildBackgroundAsset({
+      imageSrc: '/generated/match3d/stale-background.png',
+    }),
+    generatedItemAssets: [
+      buildItemAsset({
+        itemId: 'stale-item',
+        imageSrc: '/generated/match3d/stale-item.png',
+      }),
+    ],
+  });
+  const publicBackground = buildBackgroundAsset({
+    imageSrc: '/generated/match3d/public-background.png',
+  });
+  const publicWork = buildPublicWork({
+    profileId: 'public-profile',
+    generatedBackgroundAsset: publicBackground,
+    generatedItemAssets: [
+      buildItemAsset({
+        itemId: 'public-item',
+        imageSrc: '/generated/match3d/public-item.png',
+      }),
+    ],
+  });
+  const run = buildRun({ profileId: 'public-profile' });
+
+  expect(
+    resolveMatch3DRuntimeGeneratedItemAssets(run, staleProfile, publicWork).some(
+      (asset) => asset.imageSrc === '/generated/match3d/public-item.png',
+    ),
+  ).toBe(true);
+  expect(
+    resolveMatch3DRuntimeGeneratedBackgroundAsset(run, staleProfile, publicWork),
+  ).toEqual(publicBackground);
+  expect(resolveMatch3DRuntimeBackgroundImageSrc(run, staleProfile, publicWork)).toBe(
+    '/generated/match3d/public-background.png',
+  );
+});
diff --git a/src/components/platform-entry/platformMatch3DRuntimeProfile.ts b/src/components/platform-entry/platformMatch3DRuntimeProfile.ts
new file mode 100644
index 00000000..4f0325ce
--- /dev/null
+++ b/src/components/platform-entry/platformMatch3DRuntimeProfile.ts
@@ -0,0 +1,326 @@
+import type { Match3DAgentSessionSnapshot } from '../../../packages/shared/src/contracts/match3dAgent';
+import type { Match3DRunSnapshot } from '../../../packages/shared/src/contracts/match3dRuntime';
+import type {
+  Match3DGeneratedBackgroundAsset,
+  Match3DGeneratedItemAsset,
+  Match3DWorkProfile,
+  Match3DWorkSummary,
+} from '../../../packages/shared/src/contracts/match3dWorks';
+import {
+  hasMatch3DGeneratedImageAsset,
+  mergeMatch3DGeneratedItemAssetsForRuntime,
+  normalizeMatch3DGeneratedItemAssetsForRuntime,
+} from '../../services/match3dGeneratedModelCache';
+import {
+  isMatch3DGalleryEntry,
+  type PlatformPublicGalleryCard,
+} from '../rpg-entry/rpgEntryWorldPresentation';
+
+export function mapPublicWorkDetailToMatch3DWork(
+  entry: PlatformPublicGalleryCard,
+): Match3DWorkSummary | null {
+  if (!isMatch3DGalleryEntry(entry)) {
+    return null;
+  }
+
+  return promoteMatch3DGeneratedBackgroundAsset({
+    workId: entry.workId,
+    profileId: entry.profileId,
+    ownerUserId: entry.ownerUserId,
+    sourceSessionId:
+      'sourceSessionId' in entry && typeof entry.sourceSessionId === 'string'
+        ? entry.sourceSessionId
+        : null,
+    gameName: entry.worldName,
+    themeText: entry.themeTags[0] ?? '经典消除',
+    summary: entry.summaryText,
+    tags: entry.themeTags,
+    coverImageSrc: entry.coverImageSrc,
+    referenceImageSrc: null,
+    clearCount: 12,
+    difficulty: 4,
+    publicationStatus: 'published',
+    playCount: entry.playCount ?? 0,
+    updatedAt: entry.updatedAt,
+    publishedAt: entry.publishedAt,
+    publishReady: true,
+    backgroundPrompt: entry.backgroundPrompt ?? null,
+    backgroundImageSrc: entry.backgroundImageSrc ?? null,
+    backgroundImageObjectKey: entry.backgroundImageObjectKey ?? null,
+    generatedBackgroundAsset:
+      entry.generatedBackgroundAsset ??
+      findMatch3DGeneratedBackgroundAsset(entry.generatedItemAssets) ??
+      null,
+    generatedItemAssets: normalizeMatch3DGeneratedItemAssetsForRuntime(
+      entry.generatedItemAssets ?? [],
+    ),
+  });
+}
+
+export function findMatch3DGeneratedBackgroundAsset(
+  generatedItemAssets: readonly Match3DGeneratedItemAsset[] | null | undefined,
+): Match3DGeneratedBackgroundAsset | null {
+  return (
+    generatedItemAssets
+      ?.map((asset) => asset.backgroundAsset ?? null)
+      .find(Boolean) ?? null
+  );
+}
+
+export function promoteMatch3DGeneratedBackgroundAsset<
+  T extends Pick<
+    Match3DWorkSummary,
+    | 'backgroundPrompt'
+    | 'backgroundImageSrc'
+    | 'backgroundImageObjectKey'
+    | 'generatedBackgroundAsset'
+    | 'generatedItemAssets'
+  >,
+>(profile: T): T {
+  const backgroundAsset =
+    profile.generatedBackgroundAsset ??
+    findMatch3DGeneratedBackgroundAsset(profile.generatedItemAssets);
+  if (!backgroundAsset) {
+    return profile;
+  }
+
+  return {
+    ...profile,
+    backgroundPrompt:
+      profile.backgroundPrompt ?? backgroundAsset.prompt ?? null,
+    backgroundImageSrc:
+      profile.backgroundImageSrc ??
+      backgroundAsset.imageSrc ??
+      backgroundAsset.imageObjectKey ??
+      null,
+    backgroundImageObjectKey:
+      profile.backgroundImageObjectKey ??
+      backgroundAsset.imageObjectKey ??
+      backgroundAsset.imageSrc ??
+      null,
+    generatedBackgroundAsset:
+      profile.generatedBackgroundAsset ?? backgroundAsset,
+  };
+}
+
+export function normalizeMatch3DWorkForRuntimeUi<T extends Match3DWorkSummary>(
+  profile: T,
+): T {
+  return promoteMatch3DGeneratedBackgroundAsset({
+    ...profile,
+    generatedItemAssets: normalizeMatch3DGeneratedItemAssetsForRuntime(
+      profile.generatedItemAssets,
+    ),
+  });
+}
+
+export function mapMatch3DWorksForRuntimeUi<T extends Match3DWorkSummary>(
+  profiles: readonly T[],
+): T[] {
+  return profiles.map(normalizeMatch3DWorkForRuntimeUi);
+}
+
+export function buildMatch3DProfileFromSession(
+  session: Match3DAgentSessionSnapshot | null,
+): Match3DWorkProfile | null {
+  const draft = session?.draft;
+  if (!session || !draft?.profileId) {
+    return null;
+  }
+
+  const now = session.updatedAt || new Date().toISOString();
+  const generatedItemAssets = normalizeMatch3DGeneratedItemAssetsForRuntime(
+    draft.generatedItemAssets,
+  );
+  return promoteMatch3DGeneratedBackgroundAsset({
+    workId: draft.profileId,
+    profileId: draft.profileId,
+    ownerUserId: 'current-user',
+    sourceSessionId: session.sessionId,
+    gameName: draft.gameName,
+    themeText: draft.themeText,
+    summary: draft.summary ?? draft.summaryText ?? '',
+    tags: draft.tags,
+    coverImageSrc: draft.coverImageSrc ?? draft.referenceImageSrc ?? null,
+    referenceImageSrc: draft.referenceImageSrc ?? null,
+    clearCount: draft.clearCount,
+    difficulty: draft.difficulty,
+    publicationStatus: 'draft',
+    playCount: 0,
+    updatedAt: now,
+    publishedAt: null,
+    publishReady: Boolean(draft.publishReady),
+    backgroundPrompt: draft.backgroundPrompt ?? null,
+    backgroundImageSrc: draft.backgroundImageSrc ?? null,
+    backgroundImageObjectKey: draft.backgroundImageObjectKey ?? null,
+    generatedBackgroundAsset: draft.generatedBackgroundAsset ?? null,
+    generatedItemAssets,
+  });
+}
+
+export function hasMatch3DRuntimeAsset(
+  assets: readonly Match3DGeneratedItemAsset[] | null | undefined,
+) {
+  return hasMatch3DGeneratedImageAsset(assets);
+}
+
+export function hasMatch3DRuntimeBackgroundAsset(
+  profile: Pick<
+    Match3DWorkSummary,
+    | 'backgroundImageSrc'
+    | 'backgroundImageObjectKey'
+    | 'generatedBackgroundAsset'
+    | 'generatedItemAssets'
+  >,
+) {
+  return Boolean(
+    profile.backgroundImageSrc?.trim() ||
+      profile.backgroundImageObjectKey?.trim() ||
+      profile.generatedBackgroundAsset?.imageSrc?.trim() ||
+      profile.generatedBackgroundAsset?.imageObjectKey?.trim() ||
+      profile.generatedBackgroundAsset?.containerImageSrc?.trim() ||
+      profile.generatedBackgroundAsset?.containerImageObjectKey?.trim() ||
+      profile.generatedItemAssets?.some(
+        (asset) =>
+          asset.backgroundAsset?.imageSrc?.trim() ||
+          asset.backgroundAsset?.imageObjectKey?.trim() ||
+          asset.backgroundAsset?.containerImageSrc?.trim() ||
+          asset.backgroundAsset?.containerImageObjectKey?.trim(),
+      ),
+  );
+}
+
+export function resolveMatch3DRuntimeGeneratedItemAssets(
+  run: Match3DRunSnapshot | null,
+  profile: Match3DWorkProfile | null,
+  publicWorkDetail: PlatformPublicGalleryCard | null,
+) {
+  const runProfileId = run?.profileId?.trim() ?? '';
+  const profileAssets = profile?.generatedItemAssets ?? [];
+  const publicDetailAssets =
+    publicWorkDetail && isMatch3DGalleryEntry(publicWorkDetail)
+      ? (publicWorkDetail.generatedItemAssets ?? [])
+      : [];
+
+  if (runProfileId && profile?.profileId === runProfileId) {
+    if (hasMatch3DRuntimeAsset(profileAssets)) {
+      return normalizeMatch3DGeneratedItemAssetsForRuntime(profileAssets);
+    }
+
+    if (
+      publicWorkDetail &&
+      isMatch3DGalleryEntry(publicWorkDetail) &&
+      publicWorkDetail.profileId === runProfileId
+    ) {
+      return hasMatch3DRuntimeAsset(publicDetailAssets)
+        ? mergeMatch3DGeneratedItemAssetsForRuntime(
+            publicDetailAssets,
+            profileAssets,
+          )
+        : normalizeMatch3DGeneratedItemAssetsForRuntime(profileAssets);
+    }
+
+    return normalizeMatch3DGeneratedItemAssetsForRuntime(profileAssets);
+  }
+
+  if (
+    runProfileId &&
+    publicWorkDetail &&
+    isMatch3DGalleryEntry(publicWorkDetail) &&
+    publicWorkDetail.profileId === runProfileId
+  ) {
+    return normalizeMatch3DGeneratedItemAssetsForRuntime(publicDetailAssets);
+  }
+
+  if (hasMatch3DRuntimeAsset(profileAssets)) {
+    return normalizeMatch3DGeneratedItemAssetsForRuntime(profileAssets);
+  }
+  return publicDetailAssets.length > 0
+    ? normalizeMatch3DGeneratedItemAssetsForRuntime(publicDetailAssets)
+    : normalizeMatch3DGeneratedItemAssetsForRuntime(profileAssets);
+}
+
+export function resolveMatch3DRuntimeGeneratedBackgroundAsset(
+  run: Match3DRunSnapshot | null,
+  profile: Match3DWorkProfile | null,
+  publicWorkDetail: PlatformPublicGalleryCard | null,
+) {
+  const runProfileId = run?.profileId?.trim() ?? '';
+  const profileBackground = profile
+    ? (promoteMatch3DGeneratedBackgroundAsset(profile)
+        .generatedBackgroundAsset ?? null)
+    : null;
+  const publicBackground =
+    publicWorkDetail && isMatch3DGalleryEntry(publicWorkDetail)
+      ? (promoteMatch3DGeneratedBackgroundAsset(publicWorkDetail)
+          .generatedBackgroundAsset ?? null)
+      : null;
+
+  if (runProfileId && profile?.profileId === runProfileId) {
+    return profileBackground ?? publicBackground;
+  }
+  if (
+    runProfileId &&
+    publicWorkDetail &&
+    isMatch3DGalleryEntry(publicWorkDetail) &&
+    publicWorkDetail.profileId === runProfileId
+  ) {
+    return publicBackground ?? profileBackground;
+  }
+  return profileBackground ?? publicBackground;
+}
+
+export function resolveActiveMatch3DRuntimeProfile(
+  run: Match3DRunSnapshot | null,
+  runtimeProfile: Match3DWorkProfile | null,
+  profile: Match3DWorkProfile | null,
+) {
+  const runProfileId = run?.profileId?.trim() ?? '';
+  if (runProfileId && runtimeProfile?.profileId === runProfileId) {
+    return runtimeProfile;
+  }
+  if (runProfileId && profile?.profileId === runProfileId) {
+    return profile;
+  }
+  return runtimeProfile ?? profile;
+}
+
+export function resolveMatch3DRuntimeBackgroundImageSrc(
+  run: Match3DRunSnapshot | null,
+  profile: Match3DWorkProfile | null,
+  publicWorkDetail: PlatformPublicGalleryCard | null,
+) {
+  const runProfileId = run?.profileId?.trim() ?? '';
+  const resolvedProfile = profile
+    ? promoteMatch3DGeneratedBackgroundAsset(profile)
+    : null;
+  const resolvedPublicWork =
+    publicWorkDetail && isMatch3DGalleryEntry(publicWorkDetail)
+      ? promoteMatch3DGeneratedBackgroundAsset(publicWorkDetail)
+      : null;
+  const profileBackground =
+    resolvedProfile?.backgroundImageSrc?.trim() ||
+    resolvedProfile?.generatedBackgroundAsset?.imageSrc?.trim() ||
+    resolvedProfile?.backgroundImageObjectKey?.trim() ||
+    resolvedProfile?.generatedBackgroundAsset?.imageObjectKey?.trim() ||
+    '';
+  const publicBackground =
+    resolvedPublicWork?.backgroundImageSrc?.trim() ||
+    resolvedPublicWork?.generatedBackgroundAsset?.imageSrc?.trim() ||
+    resolvedPublicWork?.backgroundImageObjectKey?.trim() ||
+    resolvedPublicWork?.generatedBackgroundAsset?.imageObjectKey?.trim() ||
+    '';
+
+  if (runProfileId && profile?.profileId === runProfileId) {
+    return profileBackground || publicBackground || null;
+  }
+  if (
+    runProfileId &&
+    publicWorkDetail &&
+    isMatch3DGalleryEntry(publicWorkDetail) &&
+    publicWorkDetail.profileId === runProfileId
+  ) {
+    return publicBackground || profileBackground || null;
+  }
+  return profileBackground || publicBackground || null;
+}