Their goal is clear: to prevent Puget Sound’s iconic Southern Resident killer whales from going extinct. Solving that problem is anything but simple. The task force convened by Gov. Jay Inslee to save the orcas added 13 new recommendations this week, at its final meeting. The additions to the group’s so-called “Year 2 Report” cover more than 100 pages, adding climate change and population growth to the list of issues complicating orca recovery.