Missing: A search bar for communities. Why dig through Digg?

There's no way to search within a community, only across the whole site. That could make it frustrating when looking for something you know you saw a few days ago, or just trying to discover related conversations in one place. A simple search bar scoped to the current community would make a huge difference for usability. Anyone else feel this friction? Would love to hear if there's a workaround, or if this is on the roadmap.