Duh
It's here for download https://support.apple.com/kb/DL1804?locale=en_GB
Not exactly sure what you mean by 'babysitting a GUI app'. The Appstore pretty good at resuming interrupted downloads. Sounds like you want to be angry for the sake of it.
... Whereas you could be quite reasonably angry about them not providing patches for Lion, Mountain Lion and Mavericks.
Biting the hand that feeds IT
