Another vibe-coded one-shot.
I was struggling to compare my env vars across envs — I like to have everything at a glance. Didn't find anything that did it, and didn't want to subscribe to yet another service.
How to run:
npx envmatrix .env.local .env.dev .env.prod
Opens a local server with a side-by-side matrix of every key across every file. Same values share a color so divergences pop visually. Edits in the UI write back to disk.
I could have made the color diff only per line...