ops(scripts): dispatch, queue gating, heartbeat, quota probe

dispatch-turn.sh (headless turn launcher with TURN_MODEL routing),
queue-after.sh (serial gate chain + quota-wall guard), pmo-heartbeat.sh
(PMO wake loop), quota-probe-then-chain.sh (post-wall relaunch).

scripts/root-rename-inbox.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+# root-rename-inbox.sh — rename /home/_crossfeed/inbox/founder -> inbox/rceo
+# (Charles dislikes "founder" as a name for himself.) Idempotent. Root runs:
+#   sudo bash ~/.coordinate/scripts/root-rename-inbox.sh
+set -euo pipefail
+[[ $EUID -eq 0 ]] || { echo "run as root: sudo bash $0"; exit 1; }
+src=/home/_crossfeed/inbox/founder
+dst=/home/_crossfeed/inbox/rceo
+if [[ -d $src && ! -e $dst ]]; then
+    mv "$src" "$dst"
+elif [[ -d $dst ]]; then
+    echo "already renamed"
+else
+    echo "source missing: $src"; ls -la /home/_crossfeed/inbox/; exit 1
+fi
+chown reachableceo:users "$dst"
+chmod 3775 "$dst"
+ls -ld "$dst"
+echo "OK. Remind PMO to update PROTOCOL.md path references."