local helper = jarvis.context.command_path .. "\\_media_helper.ps1"
local cmd = string.format(
    'powershell -NoProfile -ExecutionPolicy Bypass -File "%s" -Action prev',
    helper
)
local res = jarvis.system.exec(cmd)
if res.success then
    jarvis.audio.play_ok()
else
    jarvis.log("error", "media prev failed: " .. tostring(res.stderr))
    jarvis.audio.play_error()
end
return { chain = false }