sync: doc upd, json parse in setvars node, fix json vars visibility

run_agentui.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# НадTavern Linux launcher
+# Usage:
+#   chmod +x ./run_agentui.sh
+#   ./run_agentui.sh
+
+# Go to repo root (script location)
+cd "$(dirname "$0")"
+
+PORT="${PORT:-7860}"
+HOST="${HOST:-127.0.0.1}"
+
+echo "Installing dependencies..."
+
+if command -v python3 >/dev/null 2>&1; then
+  PY=python3
+else
+  PY=python
+fi
+
+"$PY" -m pip install --upgrade pip
+"$PY" -m pip install -r requirements.txt
+
+echo "Starting НадTavern on http://$HOST:$PORT/"
+
+# Try to open UI editor in default browser (non-fatal if fails)
+if command -v xdg-open >/dev/null 2>&1; then
+  xdg-open "http://$HOST:$PORT/ui/editor.html" >/dev/null 2>&1 || true
+elif command -v open >/dev/null 2>&1; then
+  open "http://$HOST:$PORT/ui/editor.html" >/dev/null 2>&1 || true
+fi
+
+exec "$PY" -m uvicorn agentui.api.server:app --host "$HOST" --port "$PORT" --log-level info