Looks like dragon tongue. Which is a determinate, French bean iirc.
I grew them a couple times from an heirloom company. Definitely more of a hybrid between dry bean/ and a fresh cut. Was a bit stringy and lost its tenderness before it got the cool splotches, which also didn't stand up to cooking. I let some go to dry beans and they were far better that way, but in a small garden allotment, just not going to get enough to make it meaningful.
I think you may have grown a different bean. I grow Dragon Tongue beans every year as garden snacks and they look pretty different than the OP picture.
Check out the upper right. Might be more than one variety, but the more mature bean in the UR does sure looks like dragons tougne. I think we might have less mature or second flush beans in the foreground.
Thats also the company I got my seeds from (your link) , and they looked like the one in the UR.