[BUG] `404 Not_Found` in theme `obsidian`

**Describe the bug**

https://meta-hexo-starter-custom-n4t36re5b-metanetwork.vercel.app/page/
404 Not_Found
**To Reproduce**
Steps to reproduce the behavior:
1. Go to 'https://meta-hexo-starter-custom-n4t36re5b-metanetwork.vercel.app'
2. Click on 'PAGE'
3. See error

**Expected behavior**
Make sure the `PAGE` navigation to a valid page.For example:
[Demo](https://obsidian.tridiamond.tech/)

**Screenshots**

**Desktop (please complete the following information):**
- OS: [macOS]
- Browser [firefox]
- Version [[e.g. 22](https://meta-hexo-starter-custom-n4t36re5b-metanetwork.vercel.app)]

**Smartphone (please complete the following information):**
- Device: [e.g. iPhone6]
- OS: [e.g. iOS8.1]
- Browser [e.g. stock browser, safari]
- Version [e.g. 22]

**Additional context**
Add any other context about the problem here.

Start by opening the reported deployment URL, selecting the PAGE navigation, and comparing the result with the linked Obsidian demo. Trace the PAGE navigation entry in the obsidian theme and verify that it resolves to a valid page rather than /page/ returning 404.

Written by the indexing model from the issue text.