Hilarious ~1foot space in bedroom

Am overseas and there was some “oversight” here on the measurements for this closet, it was supposed to be around 2 feet wide, somehow ended up with this. 😂

Before I get them to tear this wall down, is there something I can do? I was considering a pull out “storage closet” with shelving on some biggish wheels would be a pretty cool feature. Is that feasible? Or better to put on rails?