Seems the only SW owners manual i have that states not to dry fire would be for the compact 22 which makes sense.
To be honest and maybe i am in the minority but i dont dry fire any of my MP’s. I prefer to work on everything while at the range, from trigger to grip to follow up. But this is also a hobby so range time is something i look forward to.
Back on point if something breaks and the manual did not specify dry fire was not allowed then i would think the manu would have to cover any repair. Only my .02