When you open the media browser from inside a thread, it now shows that thread's own files first. Files you've uploaded to the conversation appear at the top of the Uploads tab, and anything the assistant has generated in that thread, along with the thread's connected Imagination, lead the Generations tab. Everything else you've created in your workspace is still there below, just no longer mixed in ahead of what's actually relevant to the conversation you're in.
How to use it
Open any thread that has attachments or AI-generated media in it.
Open the media browser from within the thread.
Check the Uploads tab: files you attached to this thread appear first, followed by your other workspace uploads.
Check the Generations tab: outputs created in this thread, plus media from the thread's linked Imagination, appear first, followed by your remaining generations.
Select any file as you normally would to reuse it in the conversation.
Tips
Files are matched to the thread automatically. You don't need to tag or move anything for it to show up first.
If a generation already appears at the top because it belongs to the thread, it won't be duplicated further down the list.
This prioritisation only applies when you open the media browser from inside a thread. Opening it elsewhere in your workspace shows your full library in the usual order.