Drafts live at the top of Studio. A draft is a brief you haven't generated yet, so it costs nothing and keeps as long as you like.
Your Library holds everything you've generated:
Finished videos, ready to publish or download.
Every music track from every video.
Every visual and thumbnail.
Reuse is the point. When writing a new brief, type @ to pull in something from your Library, like a track you want back. Reused tracks don't cost credits again.
Deleting something from your Library removes it from Chillframe only. Videos already on YouTube are never touched, and a video that's been published can't be deleted from your Library at all.
If something you generated isn't showing up in your Library, email [email protected] and a human will read it.