The hooks subsystem lets users extend the agent at lifecycle points the way Claude Code and Codex do — by pointing a bridge plugin at an existing `hooks.json` (or settings) so those external shell hooks run faithfully. The canonical extension surface itself is the harness's typed interception points ([the interception extension-points Agent Note](../../.agents/notes/implemented/feature/2026-06-30-interception-extension-points.md)); a "native hook" is just an ordinary Cordis plugin on those extension points. These packages are the **bridges** that translate the external shell-hook protocol onto that same surface, plus the shared wire-protocol library they build on.
