Articles can now be scheduled, kept private, or marked pending

Article status used to be binary: draft or published. We've expanded that into a proper editorial workflow with three new statuses:

• Scheduled — a published article with a future publish date. It stays invisible to readers until the date hits, then goes live automatically.
• Private — a finished article that you can preview at its real URL but that readers cannot reach. Useful for sharing with collaborators or selling private content.
• Pending — a draft that's been sent up for editorial review. Slots cleanly into a multi-author workflow.

The marketing site got a parallel refresh: new article feature images, refreshed CTA and hero sections, and updated copy reflecting the expanded editorial story. If you write with collaborators or want time-locked launches, this release is for you.