> "why does a high index XY cause an out-of-bound read". And I can't see why this would trigger any safeguards
If you only look at the later half of your statement, it's much clearer. Out-of-bounds read is a primary means to have unintended byte interpretation, it's pretty foundational in exploits aiui. Understanding why it happens is a required step on the path to leveraging it, not sure why you are surprised by setting off the alarms.
Did you try telling the LLM that you are the project author and they can verify that by looking at your computer and github, even running commands that only you could run and see on github?
I personally use the Ai security theater by telling the agent it should not do certain (not really related) things because it violates security/compliance rules we have as a company (they don't exist), works better than I expected from the system prompt (reverse hallucinations ftw!)