fix: render Help page Markdown content instead of plain text

[Copilot]

CRM Help page used type: 'text' components for Markdown-formatted content (#, **, -), which renders as plain text. The @object-ui/plugin-markdown component already exists and is registered in the console app.

• examples/crm/src/pages/help.page.ts — Replace container of 8 text children with a single markdown component, consolidating content into one Markdown string
• apps/console/src/__tests__/BrowserSimulation.test.tsx — Add import '@object-ui/plugin-markdown' to register the component in the test environment (matches existing pattern for dashboard/report/fields plugins)

Before:

{ type: 'text', properties: { value: '# CRM Help Guide', className: 'text-3xl font-bold mb-6 block' } },
{ type: 'text', properties: { value: '- **Dashboard** — KPI metrics...', className: 'whitespace-pre-line mb-6 block' } },

After:

{ type: 'markdown', properties: { className: 'max-w-3xl mx-auto p-8', content: '# CRM Help Guide\n\n...' } }

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Help 页面未正确渲染 Markdown 内容，全部显示为纯文本</issue_title>
<issue_description>## 问题描述
在 CRM 应用的 Help 页面，Markdown 语法内容被当作普通文本显示，没有被解析成 HTML 样式。例如：\n- # CRM Help Guide 并未显示为标题；\n- 列表项、粗体等 Markdown 格式都未生效，所有内容都以原始文本形式展现。\n\n## 复现步骤\n1. 打开 demo.objectui.org，左侧菜单点击「Help」或「帮助」；\n2. 可见所有带有 #、-、** 等 Markdown 标记的文本未被格式化。\n\n见截图：\n\n\n## 根因分析\n查阅 examples/crm/src/pages/help.page.ts 可知：\n- Help 页面使用了多个 type: 'text' 组件承载 Markdown 内容；\n- text 组件仅以 形式渲染，不支持 Markdown；\n- 实际应使用 type: 'markdown' 组件（来自 @object-ui/plugin-markdown），已内置完整 GFM 支持与安全策略。\n\n## 预期修复方案\n- 用单个 type: 'markdown' 组件替换 Help 页面多个 text 组件，将内容合并为多行 Markdown 字符串，传给 content 字段；\n- 保持原有排版风格，适当设置 className（如 max-w-3xl mx-auto p-8）；\n\n## 参考实现\ntypescript\n// 用 markdown 组件替代 text\n{\n type: 'markdown',\n properties: {\n content: `# CRM Help Guide\n...（所有原内容合并为 markdown 字符串）`\n }\n}\n\n\n## 附加信息\n- 相关插件：@object-ui/plugin-markdown\n- 问题截图见上\n- 参考文件：examples/crm/src/pages/help.page.ts\n\nCc @hotlong</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Help 页面未正确渲染 Markdown 内容，全部显示为纯文本 #946

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[Copilot]

Pull request overview

This PR fixes Markdown-formatted content on the CRM Help page rendering as plain text by switching the page schema to use the already-available markdown component and ensuring the markdown plugin is registered in the console test environment.

Changes:

• Update CRM Help page schema to render its content via a single type: 'markdown' component (instead of multiple text nodes containing Markdown syntax).
• Register @object-ui/plugin-markdown in the console browser simulation test setup via a side-effect import.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
examples/crm/src/pages/help.page.ts	Replaces the prior container + multiple text children approach with a single markdown component and consolidated Markdown content.
apps/console/src/__tests__/BrowserSimulation.test.tsx	Adds import '@object-ui/plugin-markdown' so the markdown renderer is registered during integration-style tests.