Agreed. Having a deployment pipeline in place dramatically reduces the friction of returning to an old project.
I have a back-burner project that touch very infrequently, but I can jump in, make a quick change, and have it deployed to "production" in just a few seconds.
Are there any good tools available for version control and/or diffing of spreadsheets?
If my coworker updates a formula in cell E3 and emails it to be, is there any way for me to know what changed?