Running Kiln

Kiln takes a folder to open as its argument, resolved against your shell's working directory:

Kiln .            # open the repo you're standing in
Kiln ../sibling   # open a neighbour
Kiln ~/code/proj  # an absolute path

With no argument it restores the last session.

You can also launch Kiln like any other Mac app, from Spotlight, Launchpad, or the Dock, then open a folder from inside. The Kiln command is there for when you're already in a terminal and want to open the folder you're standing in.