Imho you would have an easier sell if you separate knowledge into tiers: 1)overall design 2) coding standards 3) reasoning that lead to design 4) components and their individual structure 5) your current issue 6) etc

Your project becomes progressively more valuable the further you go down the list. The overall design should be documented and curated to onboard new hires. Documenting current issues is a waste of time compared to capturing live discussion, so Recall is super useful here.