The idea
A pin icon on each source in your library. Click it and the source floats to the top of the list, regardless of whatever sort order you're using. Unpin it and it drops back to its normal position. Simple, predictable, fast.
Why it matters
Most papers lean heavily on five to ten core sources. You cite them repeatedly, refer back to them for key claims, and check their metadata more than anything else in your library. Right now, finding them means searching or scrolling every time. Pinning eliminates that friction: your most important sources are always right where you need them.
Where we are
Not built yet. Small feature, clear use case, and the kind of thing that can ship quickly once it's prioritized. In the meantime, the closest thing is reading priority: give your core sources a high priority in the library and sort by priority.
Upvote this if it's on your wishlist. It helps us prioritize.