If it's anything of significant importance, it should be documented in a place that is meant, by design, for documentation.

The challenge we have found is that amazing technical documentation is often born from ephemeral conversations. I would love a solution that eliminated the toil required to clip out those comments into a long-term store.

The flip-side to the challenge is that moving our team from Slack to another platform better suited to long-term technical Q&A requires a significant cultural shift that may not be practical.