I looked around in the data files. The cheat codes are listed inside MainStrings.txt.
Code:
DC_Main 8 := allsysseen
DC_Main 9 := allempseen
DC_Main 10 := omni
DC_Main 11 := money
DC_Main 12 := research
DC_Main 13 := alltech
DC_Main 14 := fastbuild
DC_Main 15 := nomaint
DC_Main 16 := intel
DC_Main 17 := restoresupplies
DC_Main 18 := collisiongrid
DC_Main 19 := showstats
DC_Main 20 := retrofit
DC_Main 21 := repair