The reality of karma suggests that intentional energy has no “expiration date.” Does intentional energy seek manifestation, and continue to seek manifestation until it is transformed and neutralized by sufficient intentional energy of an opposite nature?

This is literally quite true. Thoughts are things; their energy is birthed into existence and will continue to exist. The universe is designed to funnel consciousness into a collective that is a repository of human thought. This has utility because it is often quite helpful to know what others are thinking, what others are wanting to see happen, what one is a part of, in effect, so you can get some feedback intuitively about where you stand, where you might fit in, and where you might be at variance with the tenor of the times and what is being pondered or feared, as the case might be. This is a way people can influence one another indirectly and, in a sense, contribute to the collective experience of life and help to make a difference, as well as being a negative influence on the part of some who might be causing great disturbances due to extreme negativity and perhaps hostile intentions, as the case may be. But these repositories of consciousness have an elegance as well as a purpose; the thoughts carry with them an energetic signature, and there is an interplay with the akashic records as well because the information on record of what everyone does has much to do with intention, whether on the part of you in carrying out an action of some kind or launching an intention of some kind, or intentions launched by a recipient of your influence who may take offense or be wounded by your negativity, or be uplifted and enhanced in some way. This is what the Law of Karma will assess from moment to moment, day to day, and so on, because the energies are assigned to who creates them—that keeps everything orderly. So, unwelcome and harmful intentions you have launched can be recalled by you if you put your mind to it and create an intention to do so. This can have healing potential of great significance and will happen when people reach greater levels of maturity and begin to reflect on all they have been a part of, and may begin to have second thoughts or regrets about prior misconduct or missed opportunities and want to set things right. Sending those intentions forth can help to undo the problems of the past by, in effect, launching a healing effort that will go out and recall prior negativity and neutralize it. This is simply a way of cleaning up one’s own mess that will help your fellow members of the human family.