I think it's very interesting to think about new OS-level primitives! One common pattern is that they transcend the "app"—they're more about services, infrastructure. Contacts autocomplete in emails; calendar events are created from messages; etc.
Really like this. I've hacked something similar together with xcallback for a few apps where I want to resurface things, but this is far broader & more powerful.Going to experiment with it for myself. Popularizing SRS & broadening scope feels like the first step in this direction