union system updated for McXtrace 3#2282

Draft

ebknudsen wants to merge 10 commits intomccode-dev:mainfrom

ebknudsen:imbibe_HALOupdates

Commits on Dec 19, 2025

Commits on Jan 21, 2026

Transition McXtrace to union-lib
willend
committed

Commits on Jan 24, 2026

Attempt use of mamba to work around seemingly hung conda solver / McXtrace ubuntu
willend
committed