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@evan hot take, why not just use the opengraph namespace/iris directly?

if the goal is to reduce duplication of data, i'd probably recommend the following

- og:title = as:name
- og:type = og:type (no way to map this one)
- og:url = as:url
- og:image = as:image

for optional ones:

- og:description = as:summary

all the other ones i'd just use ogp.me iris directly