Support onboarding on mobile to a given HS + room by correlating sessions from web->mobile

[ara4n]

From the internal matrix.to room:

i see that Google and others have finally cracked the web->mobile onboarding flow challenge if you don’t have google photos installed and you click on a link, it prompts you to install the app and then it prompts you to copy an id to your clipboard which then it prompts you to paste in the app once installed so you can correlate the flows genius! and a really great UX we should do it :D

[ara4n]

Just had a good experience with KLM doing the same thing:

This seems to be using https://firebase.google.com/docs/dynamic-links which is predictably killed-by-google; however we'd want to run our own solution anyway obviously