[
  {
    "task_id": "easy",
    "difficulty": "easy",
    "item_count": 20,
    "max_steps": 10,
    "sources": [
      "hackernews"
    ],
    "recommend_k": 5,
    "description": "Curate 5 top articles from 20 Hacker News stories for an AI/ML enthusiast.",
    "profile": {
      "interests": {
        "ai": 0.95,
        "nlp": 0.85,
        "python": 0.8,
        "data": 0.7
      },
      "preferred_sources": [
        "hackernews",
        "arxiv"
      ],
      "time_budget_mins": 120,
      "read_history": [],
      "skill_level": "intermediate"
    }
  },
  {
    "task_id": "medium",
    "difficulty": "medium",
    "item_count": 50,
    "max_steps": 20,
    "sources": [
      "hackernews",
      "devto",
      "arxiv"
    ],
    "recommend_k": 10,
    "description": "Curate 10 items from 50 across HN, DEV.to, and arXiv for a senior engineer with broad interests.",
    "profile": {
      "interests": {
        "ai": 0.9,
        "web": 0.7,
        "systems": 0.6,
        "security": 0.5,
        "python": 0.75,
        "cloud": 0.4,
        "open-source": 0.65,
        "startup": 0.3
      },
      "preferred_sources": [
        "hackernews",
        "devto"
      ],
      "time_budget_mins": 60,
      "read_history": [
        "hn_47672818",
        "hn_47673541",
        "hn_47672295"
      ],
      "skill_level": "expert"
    }
  },
  {
    "task_id": "hard",
    "difficulty": "hard",
    "item_count": 100,
    "max_steps": 30,
    "sources": [
      "hackernews",
      "devto",
      "arxiv",
      "reddit"
    ],
    "recommend_k": 15,
    "description": "Curate 15 items from 100 across all sources for a beginner with minimal stated preferences. Must infer interests from feedback.",
    "profile": {
      "interests": {
        "rust": 0.5,
        "systems": 0.4
      },
      "preferred_sources": [],
      "time_budget_mins": 30,
      "read_history": [
        "hn_47672818",
        "hn_47673360",
        "hn_47672884",
        "hn_47641472"
      ],
      "skill_level": "beginner"
    }
  }
]