feat(agent): hierarchical executor with path resolve, runtime probe, quiet UI

Make Zed Agent closer to Cursor: deterministic DevOps path index, live Traefik
port probe before blind edits, stop-after-edit, and quieter Russian progress.

scripts/check-observer-live.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ssh -o BatchMode=yes eventhub-ift bash -s <<'REMOTE'
+set -euo pipefail
+echo "== curl observer =="
+curl -sS -o /tmp/obs.body -w "http=%{http_code} time=%{time_total}\n" \
+  --max-time 15 -k https://observer.ift.calentiq.com/ || true
+head -c 400 /tmp/obs.body; echo
+echo "== swarm observer_web =="
+docker service ls 2>/dev/null | grep -i observer || true
+docker service ps $(docker service ls -q --filter name=observer 2>/dev/null | head -1) --no-trunc 2>/dev/null | head -8 || \
+  docker ps -a --filter name=observer --format '{{.Names}} {{.Status}}' | head -10
+echo "== network aliases =="
+docker network inspect eventhub-ift-net --format '{{range .Containers}}{{.Name}} {{.IPv4Address}}{{"\n"}}{{end}}' 2>/dev/null | grep -i observer || true
+REMOTE