Dangerous examples

[gregmolnar]

@danielwestendorf brought to my attention that your examples are quite dangerous. For instance at the "tools", you have a Calculator example that allows the LLM to call "eval" and if someone passes user controlled messages to the chat, it can be abused for remote code execution. You can see a simple example on the image below.

[CalvinWalzel]

Maybe the example could be updated to use either the dentaku or keisan gems instead?

[crmne]

Hey @gregmolnar and @danielwestendorf. Thanks for flagging this.

The eval was only in the docs and meant only as an example, but we definitely don't want to promote dangerous patterns in the docs. I updated them.