收口前端平台组件库能力

新增 PlatformUiKit 通用弹窗、按钮、状态、空态、媒体、表单和标签等公共组件
迁移结果页、创作工作台、认证入口、RPG 暗色面板和运行态弹窗的重复 UI chrome
补充组件测试、页面回归测试、技术文档和 Hermes 共享决策记录

src/components/common/PlatformInfoBlock.test.tsx

@@ -0,0 +1,78 @@
+/* @vitest-environment jsdom */
+
+import { render, screen } from '@testing-library/react';
+import { expect, test } from 'vitest';
+
+import { PlatformInfoBlock } from './PlatformInfoBlock';
+
+test('renders platform info block label and value chrome', () => {
+  render(<PlatformInfoBlock label="来源">拼图草稿</PlatformInfoBlock>);
+
+  const label = screen.getByText('来源');
+  const value = screen.getByText('拼图草稿');
+  const block = label.closest('div')?.parentElement;
+
+  expect(block?.className).toContain('bg-white/72');
+  expect(block?.className).toContain('rounded-[1rem]');
+  expect(value.className).toContain('font-semibold');
+  expect(value.className).toContain('leading-5');
+});
+
+test('supports multiline value layout and class overrides', () => {
+  render(
+    <PlatformInfoBlock
+      label="错误"
+      multiline
+      className="custom-block"
+      labelClassName="custom-label"
+      valueClassName="custom-value"
+    >
+      第一行{'\n'}第二行
+    </PlatformInfoBlock>,
+  );
+
+  const value = screen.getByText(/第一行/u);
+  const block = value.closest('div')?.parentElement;
+
+  expect(block?.className).toContain('custom-block');
+  expect(screen.getByText('错误').className).toContain('custom-label');
+  expect(value.className).toContain('whitespace-pre-wrap');
+  expect(value.className).toContain('leading-6');
+  expect(value.className).toContain('custom-value');
+});
+
+test('supports plain multiline value without a visible label', () => {
+  render(
+    <PlatformInfoBlock multiline className="rounded-[1.25rem]">
+      分享正文
+    </PlatformInfoBlock>,
+  );
+
+  const value = screen.getByText('分享正文');
+  const block = value.closest('div')?.parentElement;
+
+  expect(block?.className).toContain('bg-white/72');
+  expect(block?.className).toContain('rounded-[1.25rem]');
+  expect(value.className.split(/\s+/u)).not.toContain('mt-1');
+  expect(value.className).toContain('whitespace-pre-wrap');
+});
+
+test('supports compact row variant for dense preview metadata', () => {
+  render(
+    <PlatformInfoBlock label="场景" variant="compactRow">
+      霓虹公园擂台
+    </PlatformInfoBlock>,
+  );
+
+  const label = screen.getByText('场景');
+  const value = screen.getByText('霓虹公园擂台');
+  const block = label.closest('div')?.parentElement;
+
+  expect(block?.className).toContain('bg-white/74');
+  expect(block?.className).toContain('rounded-[0.85rem]');
+  expect(block?.className).toContain('sm:px-3');
+  expect(label.className).toContain('text-[var(--platform-text-muted)]');
+  expect(value.className).toContain('text-right');
+  expect(value.className).toContain('font-black');
+  expect(value.className.split(/\s+/u)).not.toContain('mt-1');
+});