Commits
* wip
* some fixes
* get basic mentions working
* proxy mention service requests through pds
* add embed to mention services and fix some behavior
* wip change lexicon name and some other stuff i forget
* update parts.page lexicons
* fix opening at mentions
* more scoping stuff
* render labels and descriptions
* support aspect ratio for embeds
* handle aspect ratios for mention embeds
* support iframe pages and basic iframe channel
* WIP capn web
* wip
* remove some logging
* add colors and lexicon for embed ctx
* wip
* some fixes
* get basic mentions working
* proxy mention service requests through pds
* add embed to mention services and fix some behavior
* wip change lexicon name and some other stuff i forget
* update parts.page lexicons
* fix opening at mentions
* more scoping stuff
* render labels and descriptions
* support aspect ratio for embeds
* handle aspect ratios for mention embeds
* support iframe pages and basic iframe channel
* WIP capn web
* wip
* remove some logging
* add colors and lexicon for embed ctx