Yes. The biology/infosec fallback to Opus is the jail. Promoting to get around it (in my case accidentally) and have Fabre find exploits is the jailbreak.

Only if you were jailed correctly. Getting out of jail when you shouldn't've been jailed in the first place is not a jailbreak

True. But in the fictional scenario where I had NOT produced the Rust code myself, I could have lied and said I made it (jailbreaking was literally asking it to check the program I had made for program vulnerabilities or readability issues - perhaps the nosie from 'readability' also contributed).