From the developer perspective I never felt the inspect CSS gets me much over the design documents that I got in the past, that included the systems definitions and rules to follow. To be honest, I prefer the latter and find a lot of the "modern", interactive tools fiddly and ineffective to use (e.g the generated css giving me a html code instead of a variable name even if its a defined design color).

That said, I never felt implementing a design once is the hard part, but keeping them maintained and in sync. What are things that worked for you in that regard? E.g. as an engineer, how do I quicky figure out what I need to adapt when a design has changed? I quickly looked at Figma, and while there is a version history, it just seems to switch completly between versions without anymore detail. So I'm bound to miss changes and completly am reliant on the designer annotating manually.