Docs sidebar nav not displaying -- can't navigate to doc pages.

The docs site seems to have lost the contextual doc-page links in the side menu.

Previously, when navigating to a docs page like

• https://tanstack.com/db/latest/docs/overview
• https://tanstack.com/ai/latest/docs/getting-started/overview

I was able to navigate between docs pages using the left hand side navigation. For example, when in the DB docs, I could see a LHS nav for guide pages, reference pages etc.

Now even if I expand the left hand side nav, it doesn't contain the actual doc pages:

I don't see the left hand side navigation, so I can't find any of the pages and the docs are fairly unusable / have terrible discovery.

在报告的 DB 和 AI 文档 URL 上重现缺失的侧边栏导航，然后检查文档站点的侧边栏入口点及相关导航配置。当在这些页面上展开左侧导航时，可以看到并使用上下文指南和参考页面链接，即表示完成。