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

.agents/skills/multi-agent-mux-create/scripts/create_session.sh

@@ -283,10 +283,10 @@ if [ "$DRY_RUN" = "1" ]; then
   echo "[dry-run] would spawn: herdr session '$SESSION_NAME' in $WORKSPACE (agent=$AGENT, herdr_session=${HERDR_SESSION_NAME:-default}, herdr_workspace=${MAM_WS_LABEL})"
   exit 0
 fi
-
+# Issue #63: a same-cwd session of this post-discovered agent records its id first (lib.sh mam_id_order_wait).
+mam_id_order_wait "$WORKSPACE" "$AGENT" "$SESSION_NAME" || exit 1
 HERDR_EPOCH=$(date +%s)
 NOW_ISO=$(date -u +'%Y-%m-%dT%H:%M:%SZ')
-
 spawn
 
 # _mark_row_rolled_back <status> <note>