saveeditonline.com
%USERPROFILE%\AppData\Roaming\RenPy\TheDeLucaFamily
Am a front-end web developer, a variable is a variable. Back up your save if you feel you need too, but changing basic stats like your money and character stats such as "pc > intelligence" shouldn't be an issue. Cheat away, as long as you keep it simple you should be able to ignore the fear mongering.
People usually break their saves when they start manipulating boolean values for scenario flags. I cheated and my save was perfectly fine.
I won't state my job title, presumably that was done as an attempt to make what you say seem to carry more merit.
It's not fear mongering.
It's proven to break the game when people use cheat mods.
Look through the thread, there is a bucket load of evidence of people actually doing so.
Events get triggered incorrectly and subsequent events then cannot be triggered.
Promotion event not triggering, so no gun package being collected.
Gun equipped doesn't recognise as being equipped, so final mission cannot begin.
There are many, many instances of these game breaking issues and most are due to mod use.
Money shouldn't break anything, but character stats for the girls romantic interest will.