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/square-hole-result/SquareHoleResultView.test.tsx

@@ -98,6 +98,12 @@ test('square hole result view exposes test run and publish actions', async () =>
 
   expect(screen.getByRole('button', { name: '试玩' })).toBeTruthy();
   expect(screen.getByRole('button', { name: '发布' })).toBeTruthy();
+  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.querySelector('svg')?.className.baseVal).toContain('h-3.5');
 
   await user.clear(screen.getByLabelText('游戏名称'));
   await user.type(screen.getByLabelText('游戏名称'), '几何新挑战');
@@ -109,7 +115,7 @@ test('square hole result view exposes test run and publish actions', async () =>
   await user.type(holePromptInput, '圆形洞口贴图');
   await user.click(screen.getByRole('button', { name: '试玩' }));
   await user.click(screen.getByRole('button', { name: '发布' }));
-  await user.click(screen.getByRole('button', { name: '返回' }));
+  await user.click(backButton);
 
   await waitFor(() => {
     expect(onStartTestRun).toHaveBeenCalledTimes(1);

src/components/square-hole-result/SquareHoleResultView.tsx

@@ -1,5 +1,4 @@
 import {
-  ArrowLeft,
   CheckCircle2,
   ImagePlus,
   Images,
@@ -30,6 +29,7 @@ import {
 } from '../../services/square-hole-works';
 import { useAuthUi } from '../auth/AuthUiContext';
 import { PlatformActionButton } from '../common/PlatformActionButton';
+import { PlatformBackActionButton } from '../common/PlatformBackActionButton';
 import { PlatformAssetPickerGrid } from '../common/PlatformAssetPickerCard';
 import { PlatformFieldLabel } from '../common/PlatformFieldLabel';
 import { PlatformIconButton } from '../common/PlatformIconButton';
@@ -467,16 +467,11 @@ function SquareHoleResultHeader({
 
   return (
     <div className="mb-4 flex items-center justify-between gap-3">
-      <PlatformActionButton
+      <PlatformBackActionButton
         onClick={onBack}
         disabled={isBusy}
-        tone="ghost"
-        size="xs"
-        className="min-h-0 self-start gap-1.5 px-3 py-1.5 text-[11px]"
-      >
-        <ArrowLeft className="h-3.5 w-3.5" />
-        返回
-      </PlatformActionButton>
+        variant="compact"
+      />
       {badge}
     </div>
   );