Fixed title rendering to use the vanilla name tag transform (EntityRenderer#renderNameTag), so scaling/hitbox changes (e.g., Pehkui) no longer shift titles.

Fixed title placement by deriving Y from the vanilla name tag baseline with a constant pixel gap; the deadmau5 offset is respected.

Fixed visibility so titles only render when the vanilla name tag renders (distance, teams, invisibility, spectator rules).

Fixed client title cache leakage between worlds/servers by clearing cached titles on logout.

Fixed revoke so an active displayed title is removed immediately when that title is revoked.

NeoForge 1.21.1: switched to the modern name tag render path and removed the old RenderLivingEvent renderer.