Have you looked at zinc cladding? I have no idea costs but it has the look

You might consider Hardie Board vertical siding panels, which can be applied board and batten style. The Hardie Board is a fiber cement panel which is impervious to woodpeckers, bats, etc. It's smooth and can be painted any color. I have it on my house with rough cedar battens spaced at 1' intervals. My house is over 20 years old and the Hardie Board is still pristine:

Pull the siding, soffits etc. and cover the house with thin sheet metal. Replace siding.

Omg really? brilliant! im going to look into this!!

Yes! we are very pro bat, just can’t live with the histoplasmosis risk, being immune compromised.

If/ when I find a bat in HERE? I'M MOVING........: )

Relocating them (far enough!) sounds like a way to go to me. Hope it'll go well!

I think most are 'pro-bat' until they have one IN their home. We have had them often. One summer it was almost a once a week event. It's a bit unsettling to not know if you can step out of your bedroom w/o finding one flying about!! Our Bat Man guaranteed he could get them out FOREVER, but our issue was the fireplace.

Likewise, arcy. Fireplaces and chimneys are great places for them to get in. Our last two homes had those, and bats occasionally. Pretty unsettling.

The building I work in had a bat infestation a few years ago. Nothing could be done at the time as it was mating season, and they are endangered. Had to wait until the babies could fly out, then the holes they were coming in were closed up. Yes, we had bats flying around the inside of the building....one wanted to get in the elevator with me. Could be sitting at my desk and one would come swooping overhead! And the smell of the guano was horrible! Had to get duct cleaners in to clean everything.

around here the standard approach for closing holes is to install a device that enables the bats to fly out but not back in - leave those in place for a week or so, then they come back and close up holes (don't ask me how I know 😖)

My bat mitigation included what la_la Girl mentioned: “one way out” device installed at likely point(s) of entry, followed by wire mesh screens installed around exterior vents, chimney and along roof ridge line. Also removal/replacement of guano stained insulation. Your cabin is beautiful, not sure what siding replacement would be mot appropriate for your climate and budget. Good luck!