* Replace eval with safe expression parser in calculator tool example
Update the calculator tool example in the CLI template to use
ast.parse instead of eval for expression evaluation.
Co-authored-by: Vinicius Brasil <vini@hey.com>
* Replace calculator example with practical file reader tool
* Use word count example - safe, no file/eval risk
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Co-authored-by: Vinicius Brasil <vini@hey.com>