I’m gathering from research that generally smart fan control switches are single pole only. We have wiring for a 3-way switched fan/light fixture.
Do 3-way smart fan switches exist?
Do intrinsically smart fan/light fixtures with 3-way switches included exist?
If neither 1 nor 2 are true, do we have other options besides just converting the wiring to 1 way?
You say “3-way” but what you actually want is control of the fan/light in two places. You’re not married to the idea of using dumb, plain “3-way” switches in the second location.
Generally with smart switches, when you’re dealing with anything more than a plain on/off switch, the primary location is handled by a smart-switch master, and then secondary locations are handled by a smart switch remote. They don’t reuse the legacy on/off switches, because they have more to do than just on/off, and they want to provide the full suite of controls at each location.
Some will provide some degree of support for it, but obviously the remote being a simple on/off switch will not give access to all abilities.
Generally the master switch needs to be as close as possible to the lamp/fan, so if the 3-way arrangement is power -> switch 1 -> switch 2 -> fan, the master goes in the switch 2 location, and you don’t get a choice to that.