Multi-root workspace should use active file's folder

Question

Claude always uses the first folder in a multi-root workspace, even if I'm editing a file from another folder.

Steps:
- Workspace with `backend` and `frontend` folders
- Open a file in `frontend`
- Ask Claude "pwd?"
- Returns `backend` path

Would be nice if it picked up the folder based on the active file, so each project's `.claude/` and `CLAUDE.md` get used correctly.

For now I just use separate windows.