How is the key player in this crisis, Kim Jong-un, going to react to this report and the UN vote tomorrow?

From his standpoint, these UN actions are just more conclusive evidence that most of the world wants to see him removed from power;  that will make Kim very dangerous indeed.

Unless the US drops its insistence on de-nuclearization and the continuance of SK/US war games, then formal diplomatic talks and the reduction of sanctions is a non-starter.  As Putin said: "NK would rather eat grass than give up their nukes."

If sanctions actually are increased or even just enforced, then that would mean an inevitable end to Kim because he depends upon criminal activities to fund his illegal WMD/missile programs which are his raison d'être.

Hence Kim may launch an armed nuclear missile to land in a (hopefully) vacant part of the Pacific as a graphic threat to show what will happen if his regime is pressured further.

Cornering a wounded hyena like Kim Jong-un is always dangerous.