{
  "version": "2.1",
  "last_updated": "2026-01-21",

  "sources": {
    "tier1": {
      "description": "高命中率源，优先抓取",
      "batch_a": [
        {
          "id": "hn",
          "name": "Hacker News",
          "url": "https://news.ycombinator.com",
          "fetch_method": "webfetch",
          "extract": "top_10",
          "enabled": true,
          "avg_quality": 4.5,
          "success_rate": 0.95
        },
        {
          "id": "hf_papers",
          "name": "HuggingFace Papers",
          "url": "https://huggingface.co/papers",
          "fetch_method": "webfetch",
          "extract": "top_voted",
          "enabled": true,
          "avg_quality": 4.8,
          "success_rate": 0.98
        }
      ],
      "batch_b": [
        {
          "id": "one_useful_thing",
          "name": "One Useful Thing",
          "url": "https://www.oneusefulthing.org",
          "fetch_method": "webfetch",
          "extract": "latest_3",
          "enabled": true,
          "avg_quality": 4.7,
          "success_rate": 0.92
        },
        {
          "id": "paul_graham",
          "name": "Paul Graham Essays",
          "url": "https://paulgraham.com/articles.html",
          "fetch_method": "webfetch",
          "extract": "latest_5",
          "enabled": true,
          "avg_quality": 4.6,
          "success_rate": 0.99
        }
      ]
    },

    "tier2": {
      "description": "中等命中率，按需抓取",
      "batch_a": [
        {
          "id": "james_clear",
          "name": "James Clear 3-2-1",
          "url": "https://jamesclear.com/3-2-1",
          "fetch_method": "webfetch",
          "extract": "latest_issue",
          "enabled": true,
          "avg_quality": 4.3,
          "success_rate": 0.90
        },
        {
          "id": "fs_blog",
          "name": "Farnam Street Brain Food",
          "url": "https://fs.blog/brain-food",
          "fetch_method": "webfetch",
          "extract": "latest_issue",
          "enabled": true,
          "avg_quality": 4.4,
          "success_rate": 0.88
        }
      ],
      "batch_b": [
        {
          "id": "hackernoon_pm",
          "name": "HackerNoon PM",
          "url": "https://hackernoon.com/c/product-management",
          "fetch_method": "webfetch",
          "extract": "latest_5",
          "enabled": true,
          "avg_quality": 3.8,
          "success_rate": 0.85
        },
        {
          "id": "scotthyoung",
          "name": "Scott Young Blog",
          "url": "https://scotthyoung.com/blog/articles",
          "fetch_method": "webfetch",
          "extract": "latest_3",
          "enabled": true,
          "avg_quality": 4.0,
          "success_rate": 0.90
        }
      ]
    },

    "tier3_browser": {
      "description": "需要浏览器渲染的源",
      "sources": [
        {
          "id": "producthunt",
          "name": "Product Hunt",
          "url": "https://www.producthunt.com",
          "fetch_method": "browser",
          "extract": "today_top_5",
          "enabled": true,
          "avg_quality": 4.2,
          "success_rate": 0.75,
          "note": "需要无头浏览器，403 on WebFetch"
        },
        {
          "id": "latent_space",
          "name": "Latent Space",
          "url": "https://www.latent.space",
          "fetch_method": "browser",
          "extract": "latest_3",
          "enabled": true,
          "avg_quality": 4.6,
          "success_rate": 0.70,
          "note": "Substack 需要 JS 渲染"
        }
      ]
    },

    "disabled": {
      "description": "已禁用的源（失效或低质量）",
      "sources": [
        {
          "id": "tldr_ai",
          "name": "TLDR AI",
          "url": "https://tldr.tech/ai",
          "reason": "订阅页面，无文章列表",
          "disabled_date": "2026-01-21"
        },
        {
          "id": "bensbites",
          "name": "Ben's Bites",
          "url": "https://bensbites.com/archive",
          "reason": "需要登录/付费墙",
          "disabled_date": "2026-01-21"
        },
        {
          "id": "interconnects",
          "name": "Interconnects AI",
          "url": "https://interconnects.ai",
          "reason": "内容提取失败，Substack 结构问题",
          "disabled_date": "2026-01-21"
        },
        {
          "id": "beehiiv_rss",
          "name": "Beehiiv RSS feeds",
          "url": "https://rss.beehiiv.com",
          "reason": "RSS 抓取困难",
          "disabled_date": "2026-01-21"
        }
      ]
    }
  },

  "fetch_config": {
    "webfetch": {
      "timeout_ms": 30000,
      "retry_count": 1,
      "cache_ttl_minutes": 60
    },
    "browser": {
      "timeout_ms": 45000,
      "wait_for_selector": "article, .post, .item",
      "screenshot_on_error": true
    }
  },

  "quality_thresholds": {
    "min_score_to_include": 3,
    "target_items": 20,
    "early_stop_threshold": 25
  }
}