Constant SHELL_COMMAND_TOOLS 

pub const SHELL_COMMAND_TOOLS: &[&str];

Tools whose arguments carry a model-authored shell command.

The dialect guidance is worth its tokens exactly when the model writes a command that a shell will parse. That is not only the shell tool: the cron and schedule tools take a command argument that runs through the same interpreter and the same dialect validation, so an agent holding only those still needs to be told which language to write.