继续沉淀结果页返回按钮

新增共享 PlatformBackActionButton 承接结果页轻量返回入口
将拼图方洞拼消消视觉小说等结果页返回按钮收口到共享组件
将拼消消跳一跳敲木鱼宝贝识物结果页返回按钮收口到共享组件
补充对应测试并更新 PlatformUiKit 收口计划与共享决策记录

src/components/edutainment-result/BabyObjectMatchResultView.test.tsx

@@ -235,3 +235,29 @@ test('baby object result blocks placeholder assets and exposes regeneration', as
   expect(onPublish).not.toHaveBeenCalled();
   expect(onStartTestRun).not.toHaveBeenCalled();
 });
+
+test('baby object result header back button reuses shared compact back action button', async () => {
+  const user = userEvent.setup();
+  const onBack = vi.fn();
+
+  render(
+    <BabyObjectMatchResultView
+      draft={createGeneratedDraft()}
+      isBusy
+      onBack={onBack}
+    />,
+  );
+
+  const backButton = screen.getByRole('button', { name: '返回' });
+
+  expect(backButton.className).toContain('platform-button--ghost');
+  expect(backButton.className).toContain('text-[11px]');
+  expect(backButton.className).toContain('gap-1.5');
+  expect(backButton.className).toContain('px-3');
+  expect(backButton.querySelector('svg')?.className.baseVal).toContain('h-3.5');
+  expect((backButton as HTMLButtonElement).disabled).toBe(true);
+
+  await user.click(backButton);
+
+  expect(onBack).not.toHaveBeenCalled();
+});

src/components/edutainment-result/BabyObjectMatchResultView.tsx

@@ -1,5 +1,4 @@
 import {
-  ArrowLeft,
   CheckCircle2,
   Loader2,
   Play,
@@ -16,6 +15,7 @@ import {
   normalizeBabyObjectMatchTags,
 } from '../../../packages/shared/src/contracts/edutainmentBabyObject';
 import { PlatformActionButton } from '../common/PlatformActionButton';
+import { PlatformBackActionButton } from '../common/PlatformBackActionButton';
 import { PlatformMediaFrame } from '../common/PlatformMediaFrame';
 import { PlatformOverlayBadge } from '../common/PlatformOverlayBadge';
 import { PlatformPillBadge } from '../common/PlatformPillBadge';
@@ -87,16 +87,11 @@ export function BabyObjectMatchResultView({
     <div className="platform-page-stage platform-remap-surface flex h-full min-h-0 flex-col overflow-hidden px-3 pb-3 pt-3 sm:px-4 sm:pt-4 xl:px-5 xl:pb-4 xl:pt-4">
       <div className="mx-auto flex h-full min-h-0 w-full max-w-5xl flex-col">
         <div className="mb-3 flex shrink-0 items-center justify-between gap-3">
-          <PlatformActionButton
+          <PlatformBackActionButton
             onClick={onBack}
             disabled={isBusy}
-            tone="ghost"
-            size="xs"
-            className="min-h-0 gap-2 px-3 py-1.5 text-[11px]"
-          >
-            <ArrowLeft className="h-3.5 w-3.5" />
-            返回
-          </PlatformActionButton>
+            className="px-3"
+          />
           <div className="flex min-w-0 items-center gap-2">
             <PlatformPillBadge
               tone={isPublished ? 'success' : 'neutral'}