sisu-markup/.envrc-git-init, branch upstream

sisu-markup/.envrc-git-init, branch upstream SiSU markup samples sisu nix package/config updates, ruby on nix current 2025-01-29T20:17:28+00:00 Ralph Amissah ralph.amissah@gmail.com 2025-01-29T20:17:17+00:00 a31b6c8270e141f09f56d52e5f11c80880573d25 - current is at ruby 3.3.6 - next is at ruby 3.4.1 - much tidying required - markup unaffected

- current is at ruby 3.3.6
- next is at ruby 3.4.1
- much tidying required
- markup unaffected