> Project context signals (repo/PRs? issues? tasks? calendar? a “project doc”?)

There's a cost to recording what you're working on, so usually the only people who track it in a fine grained way are those that need exact numbers for billing. It's not worth the time otherwise.

There are hints to what people are working on. Connecting to a database means SQL may happen, but maybe not.

It's a big issue with personal assistant ideas in general. It's very difficult to get any real context on things. Even data that seems firm like calendar appointments, isn't in practice. Look at people's calendars, and you'll see them triple booked.