Function skills_to_tools 

pub fn skills_to_tools(
    skills: &[Skill],
    security: Arc<SecurityPolicy>,
) -> Vec<Box<dyn Tool>>

Convert skill tools into callable Tool trait objects.

Each skill’s [[tools]] entries are converted to either SkillShellTool (for shell/script kinds), SkillHttpTool (for http kind), or SkillBuiltinTool (for builtin kind), enabling them to appear as first-class callable tool specs rather than only as XML in the system prompt.

The builtin kind requires the unfiltered tool registry. Use skills_to_tools_with_context to register that kind.