继续收口平台分段与泥点确认

新增泥点确认状态机共享 hook 并接入拼图与抓大鹅工作台

将首页发现页与个人中心剩余切换条收口到 PlatformSegmentedTabs

统一平台弹窗 header 关闭入口并补齐相关测试

更新前端组件收口文档与团队决策记录

src/components/unified-creation/shared/PuzzleHistoryAssetPickerDialog.test.tsx

@@ -68,7 +68,7 @@ test('selects a history asset from the picker', async () => {
   );
 
   const historyButton = await screen.findByRole('button', {
-    name: /选择.*历史图片/u,
+    name: /选择.*的历史图片$/u,
   });
   fireEvent.click(historyButton);
 

src/components/unified-creation/shared/PuzzleHistoryAssetPickerDialog.tsx

@@ -1,4 +1,3 @@
-import { X } from 'lucide-react';
 import { useEffect, useState } from 'react';
 import { createPortal } from 'react-dom';
 
@@ -9,7 +8,7 @@ import {
 import { formatPuzzleHistoryAssetCreatedAt } from '../../../services/puzzle-works/puzzleHistoryAsset';
 import { useAuthUi } from '../../auth/AuthUiContext';
 import { PlatformAssetPickerGrid } from '../../common/PlatformAssetPickerCard';
-import { PlatformIconButton } from '../../common/PlatformIconButton';
+import { PlatformModalCloseButton } from '../../common/PlatformModalCloseButton';
 
 type PuzzleHistoryAssetPickerDialogProps = {
   isBusy: boolean;
@@ -82,10 +81,10 @@ export function PuzzleHistoryAssetPickerDialog({
           <div className="text-base font-semibold text-[var(--platform-text-strong)]">
             选择历史图片
           </div>
-          <PlatformIconButton
+          <PlatformModalCloseButton
+            variant="platformIcon"
+            label="关闭历史图片选择器"
             onClick={onClose}
-            label="关闭"
-            icon={<X className="h-4 w-4" />}
           />
         </div>