Concept Skill Bundle

<!-- Canonical one-paragraph definition. Edit here; reuse via {{#include}}. -->

Skill bundle. A skill bundle is a reusable group of skills attached to an agent or channel by alias. It controls which skills load and from where: a source directory plus optional include and exclude lists. Skills themselves are reusable instructions and optional tool definitions. In the config a bundle lives at [skill_bundles.<alias>]. See Tools → Skills.