//! Skill subsystem.
//!
//! A *skill* is a directory containing a `SKILL.md` manifest + optional
//! shell scripts. Skills extend the agent with shell-backed tools.
//!
//! Public API surface:
//! - `SkillRegistry` — loaded skills, keyed by slug
//! - `load_skills()` — scan directories, apply config enable/disable
//! - `run_tool()` — execute a skill tool command
//! - `ClawhubClient` — download/install skills from clawhub.ai
//! - `LockFile` — `.clawhub/lock.json` read/write
pub use ;
pub use ;
pub use ;
pub use ;