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If elements ever shift unexpectedly by a few pixels during an animation and you can’t figure out why, try using the `will-change` CSS property.It promotes the element to its own GPU compositing layer. Use it sparingly though, since overusing it can hurt performance.

Tracing an artifact to its code proves the pipeline ran inside your system. That is provenance, and provenance you manage is weaker than verification anyone can run. Reproducibility is an adversarial property. It counts only when someone who doesn't trust you rebuilds the result in an environment you don't control and gets your number anyway. The reproducibility crisis was never a tooling gap inside one lab but it was always a gap between labs and closed tooling does not close it.