For v0:
- Add a standard ApplicationSearch UI to Conpherence somewhere. This could be a hidden URL, like `/conpherence/room/` (tee hee hee).
- By default, it should show only threads with the `isRoom` flag (maybe an ApplicationSearch option lets you search for "all threads chad was on" as an advanced use case -- see also T3165 for content search).
- We should make this work no matter where we go with the UI eventually, because it makes it possible to build dashboards.
- This UI should let you make a "New Room" instead of a "New Message". This is similar to "New Message", except you specify:
- Name of the room.
- View and join policy.
- Edit policy (default: you).
- When created, the thread gets an `isRoom` flag.
For v1:
- Figure out how this integrates into full UI and column UI.