收口前端平台组件能力

新增 PlatformAsyncStatePanel 统一 profile 异步状态骨架
扩展 PlatformSegmentedTabs 支持滚动 tab 并接入创作入口与发现页
统一 PixelCloseButton 复用 PlatformModalCloseButton 像素关闭能力
抽取平台入口泥点前置提示弹层并收紧阻断语义
补充组件收口文档与共享决策记录

src/components/platform-entry/PlatformDraftGenerationPointNoticeDialog.test.tsx

@@ -0,0 +1,49 @@
+/* @vitest-environment jsdom */
+
+import { fireEvent, render, screen } from '@testing-library/react';
+import { expect, test, vi } from 'vitest';
+
+import {
+  PlatformDraftGenerationPointNoticeDialog,
+} from './PlatformDraftGenerationPointNoticeDialog';
+
+test('renders the insufficient-points notice with the shared blocking copy', () => {
+  const onClose = vi.fn();
+
+  render(
+    <PlatformDraftGenerationPointNoticeDialog
+      notice={{
+        kind: 'insufficient-points',
+        requiredPoints: 30,
+        currentPoints: 12,
+      }}
+      onClose={onClose}
+    />,
+  );
+
+  expect(screen.getByRole('dialog', { name: '泥点不足' })).toBeTruthy();
+  expect(screen.getByText('本次需要 30 泥点，当前 12 泥点。')).toBeTruthy();
+  expect(
+    screen.getByText('当前表单不会丢失，关闭后可继续编辑或补足泥点再继续。'),
+  ).toBeTruthy();
+
+  fireEvent.click(screen.getByRole('button', { name: '知道了' }));
+  expect(onClose).toHaveBeenCalledTimes(1);
+});
+
+test('renders the balance-load-failed notice without the amber icon override', () => {
+  render(
+    <PlatformDraftGenerationPointNoticeDialog
+      notice={{ kind: 'balance-load-failed' }}
+      onClose={() => {}}
+    />,
+  );
+
+  const dialog = screen.getByRole('dialog', { name: '读取泥点余额失败' });
+
+  expect(screen.getByText('请稍后重试。')).toBeTruthy();
+  expect(
+    screen.getByText('当前表单不会丢失，关闭后可继续编辑，稍后再试。'),
+  ).toBeTruthy();
+  expect(dialog.innerHTML).not.toContain('bg-amber-100/80');
+});