Test Post: New Editor + Media Library

This post was created to test the new blog editor.

What changed

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• Real image upload for the Featured Image, instead of only a URL field.
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• A reusable Media Library — browse, reuse, and delete uploaded images.
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• A formatting toolbar above this content box (Bold, Italic, H2, H3, Link, List, Quote, Insert Image).
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If the image below shows up correctly, the upload pipeline is working end to end on production.