Opening layout in specific CWD from filepicker

[SethGower]

Does anyone know if it's possible to use the filepicker in a layout file to choose the CWD of the tab?

I have created this layout for my development that I frequently do, and would like to automate it a tab more such that when I open the layout it opens up a file picker to pick the CWD of the main pane (the one with command="nvim". I would also want the filepicker to start with a cwd that isn't /.

layout {
    pane size=1 borderless=true {
        plugin location="zellij:tab-bar"
    }
    pane split_direction="horizontal" {
        pane size="80%" focus=true command="nvim"
        pane split_direction="vertical" {
            pane // terminal access in the cwd
            pane cwd="some/subdir"
            pane cwd="some/other/subdir"
        }
    }
    pane size=1 borderless=true {
        plugin location="zellij:status-bar"
    }
}

The main pane has a cwd of my project root, and opens nvim (which I have session management that will open the session for that project). Then I have three small terminals in vertically split panes along the bottom that have their cwds set in various locations within my project to perform specific functions. If I have to forgo the command="nvim" and start that manually, that's fine.

Bonus points, would it be possible to have the bottom panes change their directory to another project to follow the main pane? So if I drop to a shell in the main pane and then change to another clone of the project (in my workflow, I have multiple branches cloned separately of the same repo, based on what features I am working on at the moment)