Nearly three decades after Princess Diana's death in a Paris tunnel, the grief and grievances of those left behind continue to surface in ways that resist resolution. Earl Spencer's forthcoming memoir reignites a long-smoldering dispute with King Charles III, alleging words spoken in the raw hours after loss that the palace now gently attributes to the distortions of sorrow rather than the record of fact. The living, it seems, are still negotiating the meaning of a death that reshaped a monarchy and transfixed a world — even as that same king prepares to counsel the architects of artificial in