A really simple Minetest mod that makes the default wood and steel trapdoors climbable.
By default the mod only makes the "open" version climbable.
To make both the open and closed trapdoors climbable, go to the init.lua
file and change MAKE_CLOSED_DOORS_CLIMBABLE
to true
The mod will also check if the xpanes
Steel Bar Trapdoor is present, and if so will apply the same climbable state to it as well.