docs: add protected Spaces visibility documentation (#2303)
* docs: add protected Spaces visibility documentation
- Add 'Space visibility' section to spaces-overview.md with comparison table
for public, protected, and private visibility levels
- Update repositories-settings.md to reflect the three-option visibility
dropdown for Spaces (public/protected/private)
- Update spaces-custom-domain.md to remove 'coming soon' note and document
protected visibility as supported
- Update spaces-embed.md to note protected Spaces are embeddable
- Add changelog entry for the protected Spaces feature
Co-authored-by: Eliott C. <coyotte508@users.noreply.github.com>
* docs: remove ambiguous 'Shows in search results' row from visibility table
Co-authored-by: Eliott C. <coyotte508@users.noreply.github.com>
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Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: Eliott C. <coyotte508@users.noreply.github.com>
