feat(create,resume): same-cwd ordering of post-discovered agents (Issue #63)

.agents/skills/multi-agent-mux-resume/scripts/resume_session.sh

@@ -238,6 +238,10 @@ if [ "${DRY_RUN:-0}" = "1" ]; then
   exit 0
 fi
 
+# Issue #63: wait if another same-cwd session of this post-discovered agent
+# is still being created or has not recorded its id yet (lib.sh mam_id_order_wait).
+mam_id_order_wait "$WORKSPACE" "$AGENT" "$SESSION_NAME" "$UUID" || exit 1
+
 if [ "$AGENT" = "opencode" ]; then
   if [ -z "${OPENCODE_PERMISSION:-}" ]; then
     export OPENCODE_PERMISSION='{"*":"allow"}'