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/diag-litellm-fails.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ssh -o BatchMode=yes eventhub-ift bash -s <<'REMOTE'
+set -euo pipefail
+cd /opt/ai-router-stack
+set -a; source .env; set +a
+
+echo "== Services =="
+docker stack services ai-router --format '{{.Name}} {{.Replicas}} {{.Image}}' | grep -E 'litellm|postgres|router' || true
+
+echo "== Health =="
+curl -sS -o /tmp/llh.txt -w "liveliness:%{http_code}\n" --max-time 10 https://litellm.ift.calentiq.com/health/liveliness || true
+curl -sS -o /tmp/llr.txt -w "readiness:%{http_code}\n" --max-time 10 https://litellm.ift.calentiq.com/health/readiness || true
+head -c 300 /tmp/llh.txt; echo; head -c 500 /tmp/llr.txt; echo
+
+echo "== Recent litellm logs (errors) =="
+docker service logs --tail 120 ai-router_litellm 2>&1 \
+  | grep -iE 'error|exception|fail|traceback|500|401|prisma|database|budget|key|warning' \
+  | tail -60 || true
+
+echo "== Last 40 lines raw =="
+docker service logs --tail 40 ai-router_litellm 2>&1 | tail -40
+
+echo "== Postgres quick =="
+PG=$(docker ps -q -f name=ai-router_postgres | head -1)
+docker exec -e PGPASSWORD="$POSTGRES_PASSWORD" "$PG" \
+  psql -U "${POSTGRES_USER:-litellm}" -d "${POSTGRES_DB:-litellm}" -c \
+  "SELECT count(*) AS spend FROM \"LiteLLM_SpendLogs\"; SELECT count(*) AS users FROM \"LiteLLM_UserTable\"; SELECT count(*) AS tokens FROM \"LiteLLM_VerificationToken\";"
+
+echo "== UI/home probe =="
+curl -sS -o /tmp/ui.txt -w "ui:%{http_code}\n" --max-time 15 https://litellm.ift.calentiq.com/ui/ || true
+curl -sS -o /tmp/models.txt -w "models:%{http_code}\n" --max-time 20 \
+  -H "Authorization: Bearer ${LITELLM_MASTER_KEY}" \
+  https://litellm.ift.calentiq.com/v1/models || true
+head -c 200 /tmp/models.txt; echo
+REMOTE