Pull request for mintlify/document-unused-pages-feature-2968

[mintlify]

The mintlify agent's changes for pull request mintlify/document-unused-pages-feature-2968

---

Note

Introduces documentation for managing "Unused pages" and adding existing files in the web editor, plus a small linting vocabulary tweak.

• Adds "Add existing files" section to editor/navigation.mdx, with steps and reference to dragging from Unused pages
• Expands editor/pages.mdx with "View unused pages" and "Add unused pages to navigation" sections; clarifies navigation interactions and hide-to-unused behavior
• Minor copy edits ("files" -> "pages", filename wording)
• Vale vocabulary: accept case-insensitive frontmatter in .vale/styles/config/vocabularies/Mintlify/accept.txt

^{Written by Cursor Bugbot for commit c5a03ab. This will update automatically on new commits. Configure here.}

[tembo]

Small typo in the dark-mode image alt text.

Suggested change

	<img src="/images/editor/add-existing-file-menu-dark.png" alt="Add existing file menu expandeda." className="hidden dark:block" />
	<img src="/images/editor/add-existing-file-menu-dark.png" alt="Add existing file menu expanded." className="hidden dark:block" />

[tembo]

Minor: this line has trailing whitespace (can trigger markdown/vale lint in some setups).

Suggested change

	- Click navigation elements to expand or collapse them.
	- Click navigation elements to expand or collapse them.

[tembo]

After Add existing file, it might help to add the selection step so the procedure is complete.

Suggested change

	1. Click **Add existing file**.
	1. Click the plus button, <Icon icon="plus" />, where you want to add the file.
	1. Click **Add existing file**.
	1. Search for and select the file.