Refresh agent instruction files

.claude/rules/repo-boundary.md

@@ -1,6 +1,8 @@
 ## Repo boundary
 
-This repo owns **tunnel lifecycle management only**. It does not own:
-- State hub code → `the-custodian/state-hub/`
-- SSH key management → `railiance-infra/` (S1) or user dotfiles
-- Ansible/provisioning → `railiance-infra/`
+This repo owns **ops-bridge** only. It does not own:
+
+<!-- TODO: List what belongs in adjacent repos, e.g.:
+- SSH key management → railiance-infra/
+- State hub code     → state-hub/
+-->