{"service": "hologram-agent-backend", "version": "0.1.0", "endpoints": {"websocket": "/session/{session_id}?token=...", "health": "/health", "memory_graph_labels": "/api/memory/graph/labels", "memory_graph": "/api/memory/graph?label=...&max_depth=3&max_nodes=200", "memory_graph_search": "/api/memory/graph/search?q=...", "memory_query": "/api/memory/query  (POST)", "memory_insert": "/api/memory/insert (POST)", "memory_health": "/api/memory/health"}}