feat: clean up agent config

docs/constellation-work.md

@@ -85,7 +85,7 @@ coherent commit before starting unrelated work.
   archived plan, with interactive preview restoration/visual behavior unproven.
 - **Agents:** Herdr is selected; agent-deck and tmux remain installed alongside it.
   Codex has agent-deck notifications and hooks enabled. Shared Context7/NixOS skills
-  live under `.agents/skills`; a Nix-managed marketplace exposes Ponytail.
+  live under `.agents/skills`.
   Zellij is also declared on workstations. Further project workflow work is deferred.
 - **SharePoint:** Zenith declares an hourly service syncing `company-sharepoint:`
   into `~/.local/share/yookr-reference/sharepoint/Algemeen` and