- attach_command is `herdr --session <server> agent attach <herdr name>`
(`default` written too), built by lib_py.agents.sanitize.attach_command;
create, resume and reconcile all use it. kill_command and start_command
are no longer written, and status --json drops start_command.
- The two raw kill-session hints (create exit 43, id_order's orphan) print a
stop-skill command with --herdr-session instead.
- stop_session.sh closes a session that has no registry row, herdr only and
without --agent, when herdr runs it inside this workspace; another
workspace's session is refused (exit 5), a missing one is exit 1, one that
survives kill-session is exit 6. The registry is not changed.
- Docs: only the SKILL.md lines these changes made wrong; the skill block
pins follow. Tests that asserted the removed fields keep their intent
(issue50: create's own row; issue21: no control-root path in
attach_command; tier2: the new form and the absent fields). S11 pins the
shim to 4243da5, which changed it on purpose.
Refs #71
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>