Question: Connecting vents below flood height of highest fixture?

Non plumber here. My rough in failed inspection today because of this statement printed on the inspector's report:

Vents should be 6” above flood-level rim of fixture before offsetting horizontally. Vents shall rise to 6” above flood-level rim of fixture served before being connected to any other vent.

After doing some research, I understand the issue at hand, which is the vent is running horizontal and could possibly cause an issue in case of a clog. However, I cannot figure out a solution. This is a freestanding clawfoot tub with no walls within a few feet of the drain. So it's not like I can just extend the drain upward to vent. Can someone please explain a fix on how I can reroute the lines to make this code compliant? I'm in OKC. Thanks.

https://imgur.com/2irWmcJ

 

I presume that wye is in the horizontal plane.

Stick a lavatory above that pipe above the ladder. Then you will have a proper wet vent, which can go horizontal. Insulate to prevent the lavatory plumbing from freezing.

If you need that to be a dry vent and putting a lavatory in won't work for you, I think there could be an alternative from somebody else.