{"service": "remote-chatbot", "default_model": "qwen3.5:2b", "web_ui": "/web", "usage": {"chat": "POST /chat {session, message, persona?, model?}", "new_session": "POST /sessions {session, persona?}", "reset": "DELETE /sessions/{session}", "personas": "GET /personas", "add_persona": "POST /personas {name, prompt}"}}