I spend a lot of time writing quality gates to enforce invariants in my software. For weeks, my test runner stayed green. Every guard was in place, every check passed, and every test suite reported clean execution. Then I asked an uncomfortable question: are these gates actually measuring anything, or are they just executing without complaining? To find out, I wrote a script to sabotage my own engine. The tool parses the source code, finds every fail() assertion call in the engine, disab...