New option to specify header/name of the candidates list

[asok]

Problem
I'm writing a script that will allow me to browse the filesystem and to choose file/directory. By using option --passthrough-keybindings I'm able to recursively call my script and go up or down in the filesystem tree.
It would be nice to have the current directory printed instead of "STDIN".

Feature
Add a new option to specify the header/name of the candidates list.

Examples

This is my script:

#! /bin/sh

path="${1}/"

while :
do
output=$(ls -1pha ${path}. | sed 1,2d | tv --preview "if [[ -d ${path}{0} ]] ; then ls ${path}{0} ; else bat -n --color=never --line-range=:20 ${path}{0}; fi" --passthrough-keybindings "ctrl-h,ctrl-l,ctrl-g,esc")
    results=(${output// / })

    case ${results[0]} in
        "ctrl-l")
        if [[ -d "${path}${results[1]}" ]] ;
        then path="${path}${results[1]}" ;
        else
            output=${results[1]}
            break;
        fi
        ;;
        "ctrl-h")
        path="${path}../"
        ;;
        "ctrl-g")
        exit
        ;;
        "esc")
        exit
        ;;
        *)
        output=${results[0]}
        break
        ;;
    esac
done

echo "${path}${output}"

Additional context
This is how it looks in Zed editor:

If I'm not mistaked fzf heas option --header which does something similar.