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-fails4.sh

@@ -0,0 +1,17 @@
+#!/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
+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 \"startTime\", status, model, call_type,
+       left(coalesce(metadata::text,''), 400) AS metadata,
+       left(coalesce(response::text,''), 300) AS response
+FROM \"LiteLLM_SpendLogs\"
+ORDER BY \"startTime\" DESC
+LIMIT 15;
+"
+REMOTE