Console: ensure packaged builds are reproducible

I ran a quick experiment to see whether a `npm run build` is reproducible (it's not, every build produces a different output in the `dist/` folder).

I'm absolutely not experienced in the npm or ts area, but I've seen people mentioning "Nix" in the context of reproducible builds. Exploring that might be an option. https://github.com/jetify-com/devbox looks interesting.

Start by running npm run build twice and comparing the generated files in dist/ to confirm which outputs differ. Read the console build configuration and package metadata to identify the sources of nondeterminism; done means repeated packaged builds produce identical dist/ contents. The issue also suggests investigating Nix or Devbox as possible approaches.

Written by the indexing model from the issue text.