This capability (almost) already exists. It did exist at one point in the past, with a list of sessions on the document's main page, but people found that too noisy. You can see it now (but without links) on the history tab of a document - look for "Added to session" in https://datatracker.ietf.org/doc/draft-ietf-core-href/history/ for example.

It requires chairs telling the datatracker which drafts are relevant to a meeting. There is an Internet-Drafts section of the meeting materials page where I-Ds can be added or removed for each session. For any session in the future, the meeting will show on the document's main page right now - it's the past sessions that were taken away. We could look into providing a less intrusive bit of UI that would let you get to them.

Note that this does not do anything like attempt to heuristically scrape agendas. Chairs have to be explicit in attaching a draft to a session.

Considering the amount of information already on a document's main page (most of which I never use), I find it a bit surprising/ironic that people could feel that this extremely relevant information is "noisy". To each their own, I suppose.

Perhaps a suitable UI would be an extra tab, alongside 'history' -- something like 'discussions'? There you could link to each meeting the document was discussed in. Perhaps even allowing someone to give a direct link to the appropriate portion of the minutes?

If it were possible to use an API to associate a meeting with a document -- ideally for past meetings as well as current ones -- that would be most useful; writing a local tool to do the scraping would be trivial.

It strikes me that this could be hacked in already using Additional Resources -- but I suspect that might make some unhappy :)

Absolutely! This feature would greatly enhance traceability and streamline the process. Integrating meeting references directly with drafts can save a lot of time and effort for everyone involved. Plus, it ensures nothing gets lost in the shuffle.