New Issue: Stabilize transmute

28239, "lydia-duncan", "Stabilize transmute", "2025-12-19T17:16:18Z"

Motivated by Damian's Discourse post and #28188

I haven't thought deeply about what stabilizing it would entail, but I suspect it may move out of ChapelBase and into another module (probably AutoMath, per Damian's thinking, as that seems like a reasonable sorting for it thematically, and that would maintain its automatically-included status).

This has not sounded like a high priority, mostly filing so it doesn't get forgotten