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-no-tool-calls.sh

@@ -0,0 +1,20 @@
+#!/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 "== Spend last 15m =="
+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, total_tokens, completion_tokens,
+       left(coalesce(metadata->'error_information'->>'error_message',''), 120) AS er
+FROM \"LiteLLM_SpendLogs\"
+ORDER BY \"startTime\" DESC LIMIT 15;
+"
+echo "== Router =="
+docker service logs --since 15m ai-router_router 2>&1 \
+  | grep -iE 'executor|tool_calls|finish|no_tool|408|escalate|hierarchical_agent|a-medium-code|b-complex' \
+  | tail -40
+REMOTE