${esc(t)}

抓到 ${\n SRC.map((s) => `${s.tag} ${counts[s.tag] ?? 0} 条`).join(\"、\")\n }` +\n ` → 保留 ${kept.length} 条，丢弃 ${dropped.length} 条` +\n `（软文 ${spon.length}、重复 ${dup.length}）。

` +\n (dropped.length\n ? `${\n rows(spon)\n }${rows(dup)}

来源	丢弃了什么 / 为什么

`\n : \"

这一轮没有丢弃任何条目。

\") +\n `

可调参数（跟在地址后面，第一个用 ? 之后用 &）：

参数	作用
`?days=N`	只保留最近 N 天（默认不限）
`?pages=N`	每个源翻几页，每页 10 条（默认 1，最多 3）
`?sponsored=1`	保留付费软文（默认丢弃）
`?tag=0`	标题前不加来源前缀
`?diag=0`	不要这条诊断

`;\n const pin = new Date((kept[0]?.date.getTime() ?? Date.now()) + 60_000);\n return {\n title:\n `合并诊断 · ${day}（保留 ${kept.length} 条 / 丢弃 ${dropped.length} 条）`,\n link: base.origin + base.pathname,\n guid: \"diag-mit-tr\",\n date: pin,\n html: body,\n };\n}\n\nfunction buildRss(\n kept: Item[],\n showTag: boolean,\n diag: ReturnType | null,\n) {\n const items = kept.map((it) => {\n const t = (showTag ? `${it.tag} · ` : \"\") + it.title;\n const d = it.creator ? `${it.creator} —— ${it.desc}` : it.desc;\n return `${esc(t)}${esc(it.link)}` +\n `${esc(key(it.link))}` +\n `${esc(d)}` +\n `${it.date.toUTCString()}`;\n });\n if (diag) {\n items.unshift(\n `${esc(diag.title)}${esc(diag.link)}` +\n `${esc(diag.guid)}` +\n `${esc(diag.html)}` +\n `${diag.date.toUTCString()}`,\n );\n }\n return `\n\nMIT Tech Review · AI（三源合并去重）\nhttps://www.technologyreview.com/topic/artificial-intelligence/\nMIT Technology Review 的 AI 板块、The Algorithm、Will Douglas Heaven 三个 feed 合并，同一篇只留一份，默认剔除付费软文。\nen-US\n${new Date().toUTCString()}\n${items.join(\"\")}\n`;\n}\n\nexport default async function (req: Request): Promise {\n const url = new URL(req.url);\n const q = url.searchParams;\n const pages = Math.min(3, Math.max(1, Number(q.get(\"pages\")) || 1));\n const daysRaw = Number(q.get(\"days\"));\n const cutoff = daysRaw > 0\n ? new Date(Date.now() - Math.min(365, daysRaw) * 864e5)\n : null;\n const keepSponsored = q.get(\"sponsored\") === \"1\";\n\n const { items, counts, errors } = await collect(pages);\n if (!items.length) {\n return new Response(\n \"三个 feed 一条都没抓到。把这句话告诉 Claude。\\n\" + errors.join(\"\\n\"),\n {\n status: 502,\n headers: { \"Content-Type\": \"text/plain; charset=utf-8\" },\n },\n );\n }\n const { kept, dropped } = reduce(items, keepSponsored, cutoff);\n\n const diag = q.get(\"diag\") === \"0\"\n ? null\n : diagEntry(counts, kept, dropped, url);\n return new Response(buildRss(kept, q.get(\"tag\") !== \"0\", diag), {\n headers: {\n \"Content-Type\": \"application/rss+xml; charset=utf-8\",\n \"Cache-Control\": \"public, max-age=300\",\n },\n });\n}",[136],"81823e3a-5552-40cc-9816-8dede2554dcb","README.md","86dbb7a8-a8ce-11f1-82c6-1607ee4eb77e",8,["D",1788574134314],3,"# mit-tr-ai\n\nMIT Technology Review 的三个 AI 相关 feed 合并去重。 Base:\nhttps://anmeimei--6e26e1e8a8cd11f1b08b1607ee4eb77e.web.val.run/\n\n源（优先级从具体到宽泛，重复时保留更具体的那个标签）：\n\n| 标签 | feed |\n| ---- | -------------------------------------------------------------------- |\n| 算法 | https://www.technologyreview.com/tag/the-algorithm/feed/ |\n| WDH | https://www.technologyreview.com/author/will-douglas-heaven/feed/ |\n| AI | https://www.technologyreview.com/topic/artificial-intelligence/feed/ |\n\n三个 feed 都不需要登录，匿名请求拿到的内容完全一样。每页固定 10 条，`?paged=N`\n翻页。\n\n## 去重\n\n**只按文章链接（去掉查询串和末尾斜杠），不做相似度匹配。**\n同一家媒体、同一篇文章就是同一个 URL，相似度在这里只会带来误杀，没有任何收益。\n这一点和 us-topnews-merge 不同——那边跨 CNBC/CBS 两家，必须靠近似匹配。\n\n## 默认剔除付费软文\n\nMIT TR 的广告稿（\"MIT Technology Review Insights\" 及署名的合作稿）都带\n`sponsored`。2026-09-05 实测：AI 板块 40 条里 9\n条是软文（22.5%）。注意别用作者名判断——实测有 2 条 sponsored\n稿件署的是普通人名，不是 Insights。 `?sponsored=1` 可以把软文放回来。\n\n## 参数\n\n ?days=N 只保留最近 N 天（默认不限）\n ?pages=N 每个源翻几页，每页 10 条（默认 1，最多 3）\n ?sponsored=1 保留付费软文（默认丢弃）\n ?tag=0 标题前不加来源前缀\n ?diag=0 不要「合并诊断」那条\n\nfeed 第一条是「合并诊断」，guid 固定为 `diag-mit-tr`，永远只有一条，就地更新。\n日期按美东算。\n\n## 实测 2026-09-04（美东）\n\n| 参数 | 保留 | 丢弃 |\n| ------------ | ---- | ------------------- |\n| 默认 | 26 | 4（软文 2、重复 2） |\n| ?sponsored=1 | 28 | 2 |\n| ?pages=3 | 76 | 14 |\n| ?days=14 | 8 | 3 |\n\n默认约 130ms，?pages=3 约 1.1 秒。\n\n三个 feed 的时间跨度差很多：AI 板块 10 条只回溯约 11 天，The Algorithm 约 2.5\n个月， WDH 约 3.5\n个月。所以首次订阅会一次进来二十几条、最早到五月，之后就只有新的了。\n\n## 相关\n\n- CNBC + CBS 合并去重：val `anmeimei/us-topnews-merge`\n- 财新滚动要闻 / 晨读荐闻 / T早报：val `anmeimei/caixin-briefing-rss`",[144],"pulls","branches",1,"forks","envVars",{"_159":62,"_161":62},"connections",{"_159":62,"_160":62},"count","unfilledCount","emptyCount",{"_42":143,"_32":144,"_30":145,"_130":-5,"_40":41,"_39":146,"_131":24,"_37":172,"_13":148,"_33":20,"_35":149,"_23":24,"_133":-5,"_166":173,"_26":174},{"_42":135,"_32":136,"_30":56,"_130":-5,"_40":41,"_39":137,"_131":58,"_37":169,"_13":139,"_33":140,"_35":141,"_23":24,"_133":-5,"_166":170,"_26":171},{"_42":129,"_32":27,"_30":31,"_130":-5,"_40":41,"_39":14,"_131":24,"_37":165,"_13":62,"_33":34,"_35":36,"_23":24,"_133":-5,"_166":167,"_26":168},["D",1788576673022],"children",[],[27],["D",1788575212783],[],[136],["D",1788574134314],[],[144],["D",1788573569461],{"_96":95,"_104":100},{"_96":95,"_97":98,"_99":100,"_18":54,"_101":102,"_103":24},{"_13":85,"_32":86,"_42":41,"_87":43,"_88":-5,"_89":-5,"_90":-5,"_91":-5,"_92":-5,"_93":44,"_94":95},"ctx",{"_78":-5,"_123":212,"_213":214,"_215":216,"_217":24,"_218":24,"_219":24,"_220":58,"_221":-5,"_222":-7,"_223":-7,"_224":62,"_225":24,"_226":24,"_227":-5,"_228":24,"_229":24,"_230":24,"_231":-5},"ENV",{"_183":184,"_185":186,"_187":86,"_188":189,"_190":191,"_192":193,"_194":195,"_196":197,"_198":199,"_200":201,"_202":203,"_204":205,"_206":207,"_208":209,"_210":211},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

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