{"blocks": [{"key": "4c75a43f", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "e976f6cd", "text": "Design a dog-walking marketplace app. Describe core user journeys, MVP feature set, high-level architecture (mobile clients, backend services, APIs), and key scoping or scaling considerations.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}