init python:
    for label in renpy.get_all_labels():
        renpy.game.persistent._seen_ever[label] = True
        renpy.game.seen_session[label] = True
    for obj in renpy.game.script.all_stmts:
        if isinstance(obj, renpy.ast.Image):
            image_name = obj.imgname
            if not isinstance(image_name, tuple):
                image_name = tuple(image_name.split())
            renpy.game.persistent._seen_images[image_name] = True