shell: logbook.js

logbook.js

@@ -0,0 +1,2275 @@
+(function () {
+  "use strict";
+
+  let MANIFEST = null;
+  const PAGE_CACHE = {};
+  const UNFURL_CACHE = {};
+  const LIVE_RELOAD_MS = 1500;
+  const FIGURE_FRAME_WINDOWS = new Set();
+  let FIGURE_NAVIGATION_READY = false;
+
+  function esc(s) {
+    return String(s)
+      .replace(/&/g, "&")
+      .replace(/</g, "&lt;")
+      .replace(/>/g, "&gt;")
+      .replace(/"/g, "&quot;")
+      .replace(/'/g, "&#39;");
+  }
+
+  function flattenTree(node, depth, acc) {
+    acc.push({ node: node, depth: depth });
+    (node.children || []).forEach((c) => flattenTree(c, depth + 1, acc));
+    return acc;
+  }
+
+  function findNode(node, slug) {
+    if (node.slug === slug) return node;
+    for (const c of node.children || []) {
+      const hit = findNode(c, slug);
+      if (hit) return hit;
+    }
+    return null;
+  }
+
+  /* -------------------- minimal markdown -------------------- */
+
+  function inline(text) {
+    let t = esc(text);
+    t = t.replace(/`([^`]+)`/g, (_, c) => `<code>${c}</code>`);
+    t = t.replace(/\*\*([^*]+)\*\*/g, (_, c) => `<strong>${c}</strong>`);
+    t = t.replace(/\[([^\]]+)\]\(([^)]+)\)/g, (_, txt, url) => {
+      const safe = esc(url);
+      const attrs = /^https?:/.test(url) ? ' target="_blank" rel="noopener"' : "";
+      const item = /^https?:/.test(url) ? classifyResource(url) : null;
+      const data = item
+        ? ` class="res-link" data-res-url="${esc(item.url)}"`
+        : "";
+      return `<a href="${safe}"${attrs}${data}>${txt}</a>`;
+    });
+    t = t.replace(/(^|[\s(])(https?:\/\/[^\s<>)"'`]+)/g, (m, pre, url) => {
+      let rest = "";
+      const cut = url.search(/&quot;|&#39;|&lt;|&gt;/);
+      if (cut !== -1) {
+        rest = url.slice(cut);
+        url = url.slice(0, cut);
+      }
+      const trailing = (url.match(/[.,;:!?`]+$/) || [""])[0];
+      const clean = trailing ? url.slice(0, -trailing.length) : url;
+      if (!clean) return m;
+      const item = classifyResource(clean);
+      if (item) return `${pre}${resChipHtml(item)}${trailing}${rest}`;
+      return `${pre}<a href="${clean}" target="_blank" rel="noopener">${clean}</a>${trailing}${rest}`;
+    });
+    return t;
+  }
+
+  function resChipHtml(item) {
+    return (
+      `<a class="res-chip" href="${esc(item.url)}" target="_blank" ` +
+      `rel="noopener" data-res-url="${esc(item.url)}">` +
+      `<span class="res-chip-ico">${RESOURCE_ICONS[item.kind]}</span>` +
+      `${esc(item.id)}</a>`
+    );
+  }
+
+  const URL_ONLY = /^(https?:\/\/[^\s]+)$/;
+  const DETECTED_URL =
+    /(https?:\/\/[^\s<>)\]"'`]+|trackio-local-dashboard:\/\/[^\s<>)\]"'`]+|trackio-artifact:\/\/[^\s<>)\]"'`]+|trackio-local-path:\/\/[^\s<>)\]"'`]+)/g;
+
+  function renderMarkdown(md, container) {
+    const cellRe = /(^|\n)---\n<!-- trackio-cell\n([\s\S]*?)\n-->\n([\s\S]*?)(?=\n---\n<!-- trackio-cell\n|\s*$)/g;
+    const tokens = [];
+    let pos = 0;
+    let found = false;
+    let match;
+    while ((match = cellRe.exec(md))) {
+      found = true;
+      tokens.push({
+        kind: "md",
+        text: md.slice(pos, match.index + match[1].length),
+      });
+      tokens.push({
+        kind: "cell",
+        meta: parseCellMeta(match[2]),
+        body: match[3],
+      });
+      pos = match.index + match[0].length;
+    }
+    tokens.push({ kind: "md", text: found ? md.slice(pos) : md });
+
+    for (let i = 0; i < tokens.length; i++) {
+      const t = tokens[i];
+      if (t.kind === "md") {
+        renderMarkdownPlain(t.text, container);
+        continue;
+      }
+      if (t.consumed) continue;
+      if (t.meta.type === "code") {
+        const arts = [];
+        for (let j = i + 1; j < tokens.length; j++) {
+          const n = tokens[j];
+          if (n.kind === "md") {
+            if (n.text.trim() === "") continue;
+            break;
+          }
+          if (n.meta.type === "artifact") {
+            arts.push(n);
+            n.consumed = true;
+            continue;
+          }
+          break;
+        }
+        renderCell(t.meta, t.body, container, arts);
+      } else {
+        renderCell(t.meta, t.body, container);
+      }
+    }
+  }
+
+  function parseCellMeta(raw) {
+    try {
+      return JSON.parse(raw);
+    } catch (e) {
+      return { type: "markdown", title: "Note" };
+    }
+  }
+
+  function renderMarkdownPlain(md, container) {
+    const lines = md.replace(/<!--[\s\S]*?-->/g, "").split("\n");
+    let i = 0;
+    let para = [];
+
+    function flushPara() {
+      if (!para.length) return;
+      const joined = para.join(" ").trim();
+      para = [];
+      if (!joined) return;
+      if (/^trackio-artifact:\/\/\S+$/.test(joined)) return;
+      if (/^trackio-local-path:\/\/\S+$/.test(joined)) return;
+      if (joined.indexOf("📦 Artifact") !== -1) {
+        const div = document.createElement("div");
+        div.className = "artifact-chip";
+        div.innerHTML = ARTIFACT_ICON_IMG + inline(joined.replace(/📦\s*/, ""));
+        container.appendChild(div);
+        return;
+      }
+      if (URL_ONLY.test(joined) || IMG_PATH.test(joined)) {
+        const el = renderStandaloneUrl(joined);
+        if (el) container.appendChild(el);
+        return;
+      }
+      const p = document.createElement("p");
+      p.innerHTML = inline(joined);
+      container.appendChild(p);
+    }
+
+    while (i < lines.length) {
+      const line = lines[i];
+      const trimmed = line.trim();
+
+      if (trimmed === "") {
+        flushPara();
+        i++;
+        continue;
+      }
+      const fence = trimmed.match(/^(`{3,}|~{3,})(.*)$/);
+      if (fence) {
+        flushPara();
+        const marker = fence[1][0];
+        const closeRe = new RegExp("^" + marker + "{" + fence[1].length + ",}\\s*$");
+        const info = fence[2].trim();
+        const buf = [];
+        i++;
+        while (i < lines.length && !closeRe.test(lines[i].trim())) {
+          buf.push(lines[i]);
+          i++;
+        }
+        i++;
+        const lang = (info.split(/\s+/)[0] || "").toLowerCase();
+        const tm = info.match(/title=(\S+)/);
+        container.appendChild(
+          renderCode(buf.join("\n"), lang, tm ? tm[1] : null)
+        );
+        continue;
+      }
+      if (trimmed === "---") {
+        flushPara();
+        container.appendChild(document.createElement("hr"));
+        i++;
+        continue;
+      }
+      const h = trimmed.match(/^(#{1,4})\s+(.*)$/);
+      if (h) {
+        flushPara();
+        const el = document.createElement("h" + h[1].length);
+        el.innerHTML = inline(h[2]);
+        container.appendChild(el);
+        i++;
+        continue;
+      }
+      if (
+        trimmed.startsWith("|") &&
+        i + 1 < lines.length &&
+        /^\|?[\s:|-]*-{2,}[\s:|-]*\|?$/.test(lines[i + 1].trim())
+      ) {
+        flushPara();
+        const rows = [];
+        while (i < lines.length && lines[i].trim().startsWith("|")) {
+          rows.push(parseRow(lines[i].trim()));
+          i++;
+        }
+        renderTable(rows, container);
+        continue;
+      }
+      if (trimmed.startsWith("> ")) {
+        flushPara();
+        const bq = document.createElement("blockquote");
+        bq.innerHTML = inline(trimmed.slice(2));
+        container.appendChild(bq);
+        i++;
+        continue;
+      }
+      if (/^`[^`]+`$/.test(trimmed)) {
+        flushPara();
+        const el = document.createElement("div");
+        el.className = "ts";
+        el.textContent = trimmed.replace(/`/g, "");
+        container.appendChild(el);
+        i++;
+        continue;
+      }
+      if (trimmed.startsWith("- ")) {
+        flushPara();
+        const items = [];
+        while (i < lines.length && lines[i].trim().startsWith("- ")) {
+          items.push(lines[i].trim().slice(2).trim());
+          i++;
+        }
+        renderList(items, container);
+        continue;
+      }
+      para.push(trimmed);
+      i++;
+    }
+    flushPara();
+  }
+
+  function renderCell(meta, body, container, artifacts) {
+    const cell = document.createElement("section");
+    cell.className = `cell ${meta.type || "markdown"}`;
+    if (meta.id) cell.dataset.cellId = meta.id;
+    if (isPinned(meta)) cell.classList.add("pinned-source");
+
+    const head = document.createElement("div");
+    head.className = "cell-head";
+    const rawTitle = (meta.title || "").trim();
+    const title = rawTitle && rawTitle.toLowerCase() !== "untitled" ? esc(rawTitle) : "";
+    const when = meta.created_at ? `<span>${esc(formatTime(meta.created_at))}</span>` : "";
+    head.innerHTML =
+      (title ? `<div class="cell-title">${title}</div>` : "") +
+      `<div class="cell-meta">${when}</div>`;
+    if (!title) head.classList.add("no-title");
+    cell.appendChild(head);
+
+    const bodyEl = document.createElement("div");
+    bodyEl.className = "cell-body";
+    if (meta.type === "code") {
+      renderCodeCell(body, bodyEl, artifacts);
+    } else if (meta.type === "figure") {
+      cell.dataset.resUrl = `trackio-figure://${(meta.title || "Figure").trim()}`;
+      renderFigureCell(body, bodyEl, head);
+    } else if (meta.type === "artifact") {
+      renderMarkdownPlain(body, bodyEl);
+      const chip = bodyEl.querySelector(".artifact-chip");
+      const uri = body.match(
+        /(trackio-artifact:\/\/\S+|trackio-local-path:\/\/\S+|https:\/\/huggingface\.co\/buckets\/[^\s<)]+#\S+)/
+      );
+      if (chip && uri) chip.dataset.resUrl = uri[1];
+    } else if (meta.type === "dashboard") {
+      const sp = body.match(/https:\/\/huggingface\.co\/spaces\/[^\s<>)"'`]+/);
+      cell.dataset.resUrl = sp
+        ? sp[0]
+        : `trackio-local-dashboard://${(meta.dashboard_project || "").trim()}`;
+      renderDashboardCell(meta, body, bodyEl, head);
+    } else {
+      const cleaned = stripDuplicateTitle(body, meta.title);
+      renderMarkdownPlain(cleaned, bodyEl);
+      renderDetectedEmbeds(cleaned, bodyEl);
+    }
+    cell.appendChild(bodyEl);
+    container.appendChild(cell);
+    return cell;
+  }
+
+  function isPinned(meta) {
+    return Boolean(meta && (meta.pinned === true || meta.pinned === "true"));
+  }
+
+  function stripDuplicateTitle(body, title) {
+    if (!title) return body;
+    const m = body.match(/^\s*#{1,6}\s+([^\n]+)\n?/);
+    if (!m) return body;
+    const norm = (s) =>
+      s
+        .toLowerCase()
+        .replace(/[*_`#]/g, "")
+        .replace(/\s+/g, " ")
+        .trim();
+    return norm(m[1]) === norm(title) ? body.slice(m[0].length) : body;
+  }
+
+  function formatTime(iso) {
+    const d = new Date(iso);
+    if (Number.isNaN(d.getTime())) return iso;
+    return d.toLocaleString(undefined, {
+      month: "short",
+      day: "numeric",
+      hour: "2-digit",
+      minute: "2-digit",
+    });
+  }
+
+  function parseFences(text) {
+    const fenceRe = /(`{3,4}|~{3,4})([^\n]*)\n([\s\S]*?)\n\1/g;
+    const parts = [];
+    let pos = 0;
+    let match;
+    while ((match = fenceRe.exec(text))) {
+      if (match.index > pos) {
+        parts.push({ kind: "text", text: text.slice(pos, match.index) });
+      }
+      const info = match[2].trim();
+      const lang = (info.split(/\s+/)[0] || "").toLowerCase();
+      const titleMatch = info.match(/title=(\S+)/);
+      parts.push({
+        kind: lang === "result" || lang === "output" ? "output" : "code",
+        lang,
+        title: titleMatch ? titleMatch[1] : null,
+        text: match[3],
+      });
+      pos = match.index + match[0].length;
+    }
+    if (pos < text.length) parts.push({ kind: "text", text: text.slice(pos) });
+    return parts;
+  }
+
+  function fitFigureFrame(frame, wrap) {
+    let doc;
+    try {
+      doc = frame.contentDocument;
+    } catch (e) {
+      return;
+    }
+    if (!doc || !doc.body) return;
+    frame.style.transform = "none";
+    frame.style.width = "100%";
+    frame.style.height = "auto";
+    frame.style.position = "";
+    frame.style.left = "";
+    frame.style.top = "";
+    const avail = wrap.clientWidth;
+    const isFullscreen =
+      document.fullscreenElement === wrap ||
+      document.webkitFullscreenElement === wrap;
+    const availHeight = isFullscreen ? wrap.clientHeight : Infinity;
+    const cw = Math.max(doc.body.scrollWidth, doc.documentElement.scrollWidth, 1);
+    const ch = Math.max(doc.body.scrollHeight, doc.documentElement.scrollHeight, 1);
+    const scale = Math.min(avail / cw, availHeight / ch);
+    if (avail && scale < 1 - 1e-3) {
+      frame.style.width = `${cw}px`;
+      frame.style.height = `${ch}px`;
+      frame.style.transformOrigin = "top left";
+      frame.style.transform = `scale(${scale})`;
+      if (isFullscreen) {
+        frame.style.position = "absolute";
+        frame.style.left = `${Math.max(0, (avail - cw * scale) / 2)}px`;
+        frame.style.top = `${Math.max(0, (availHeight - ch * scale) / 2)}px`;
+        wrap.style.height = "100%";
+      } else {
+        wrap.style.height = `${Math.ceil(ch * scale)}px`;
+      }
+    } else {
+      frame.style.width = "100%";
+      frame.style.height = `${ch}px`;
+      wrap.style.height = isFullscreen ? "100%" : `${ch}px`;
+    }
+  }
+
+  function attachFigureFit(frame, wrap) {
+    const refit = () => fitFigureFrame(frame, wrap);
+    frame.addEventListener("load", refit);
+    if (window.ResizeObserver) {
+      const ro = new ResizeObserver(() => refit());
+      ro.observe(wrap);
+    }
+  }
+
+  function renderFigureCell(text, container, head) {
+    const parts = parseFences(text);
+    const htmlPart = parts.find((part) => part.lang === "html");
+    const rawPart = parts.find((part) => part.lang === "raw");
+    if (!htmlPart || !htmlPart.text.trim()) {
+      const empty = document.createElement("p");
+      empty.className = "muted";
+      empty.textContent = "No figure HTML.";
+      container.appendChild(empty);
+      return;
+    }
+    const frame = document.createElement("iframe");
+    frame.className = "figure-frame";
+    frame.sandbox = "allow-scripts allow-same-origin";
+    frame.loading = "lazy";
+    frame.srcdoc = htmlPart.text;
+    registerFigureNavigation(frame);
+    const figWrap = document.createElement("div");
+    figWrap.className = "figure-fit";
+    figWrap.appendChild(frame);
+    attachFigureFit(frame, figWrap);
+    if (head) {
+      const metaEl = head.querySelector(".cell-meta");
+      if (metaEl)
+        metaEl.insertBefore(buildFullscreenControl(figWrap, frame), metaEl.firstChild);
+    }
+    if (!rawPart || !rawPart.text.trim()) {
+      container.appendChild(figWrap);
+      return;
+    }
+    const sw = document.createElement("div");
+    sw.className = "fig-switch";
+    const thumb = document.createElement("span");
+    thumb.className = "fig-switch-thumb";
+    const figBtn = document.createElement("button");
+    figBtn.type = "button";
+    figBtn.className = "active";
+    figBtn.textContent = "Figure";
+    const rawBtn = document.createElement("button");
+    rawBtn.type = "button";
+    rawBtn.textContent = "Raw";
+    sw.appendChild(thumb);
+    sw.appendChild(figBtn);
+    sw.appendChild(rawBtn);
+    const rawView = document.createElement("div");
+    rawView.className = "figure-raw";
+    rawView.hidden = true;
+    const pre = document.createElement("pre");
+    const code = document.createElement("code");
+    code.textContent = rawPart.text;
+    pre.appendChild(code);
+    rawView.appendChild(pre);
+    rawView.appendChild(copySnippetBtn(rawPart.text));
+    const select = (showRaw) => {
+      sw.classList.toggle("raw", showRaw);
+      figBtn.classList.toggle("active", !showRaw);
+      rawBtn.classList.toggle("active", showRaw);
+      figWrap.hidden = showRaw;
+      rawView.hidden = !showRaw;
+    };
+    figBtn.addEventListener("click", () => select(false));
+    rawBtn.addEventListener("click", () => select(true));
+    if (head) {
+      head.insertBefore(sw, head.querySelector(".cell-meta"));
+    } else {
+      container.appendChild(sw);
+    }
+    container.appendChild(figWrap);
+    container.appendChild(rawView);
+  }
+
+  // Poster embeds can send `{ type: "trackio-logbook:navigate", target: "..." }`
+  // from their iframe. Only accept messages from figure frames we created, and
+  // only route to pages that are present in this logbook's manifest.
+  function registerFigureNavigation(frame) {
+    const registerFrameWindow = () => {
+      if (frame.contentWindow) FIGURE_FRAME_WINDOWS.add(frame.contentWindow);
+    };
+    // `srcdoc` replaces the initial about:blank document. Register after that
+    // navigation as well, so messages come from the live figure document.
+    frame.addEventListener("load", registerFrameWindow);
+    registerFrameWindow();
+    if (FIGURE_NAVIGATION_READY) return;
+    FIGURE_NAVIGATION_READY = true;
+    window.addEventListener("message", (event) => {
+      if (!FIGURE_FRAME_WINDOWS.has(event.source)) return;
+      const message = event.data;
+      if (!message || message.type !== "trackio-logbook:navigate") return;
+      const target = String(message.target || "").replace(/^#?\//, "");
+      if (!target || !MANIFEST || !findNode(MANIFEST.root, target)) return;
+      const hash = "#/" + target;
+      if (location.hash === hash) scrollToHash();
+      else location.hash = hash;
+    });
+  }
+
+  const FULLSCREEN_ICON =
+    '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" ' +
+    'stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">' +
+    '<path d="M8 3H3v5M16 3h5v5M21 16v5h-5M3 16v5h5"/>' +
+    '<path d="M3 8 8 3M16 3l5 5M21 16l-5 5M8 21l-5-5"/></svg>';
+
+  // Figures are rendered in same-origin iframes, so fullscreen the fitted
+  // wrapper rather than the iframe document. This uses the browser's native
+  // fullscreen UI and preserves the figure's existing responsive sizing.
+  function buildFullscreenControl(figWrap, frame) {
+    const wrap = document.createElement("span");
+    wrap.className = "cell-fullscreen";
+    const btn = document.createElement("button");
+    btn.type = "button";
+    btn.className = "cell-fullscreen-btn";
+    btn.setAttribute("aria-label", "Open figure in fullscreen");
+    btn.title = "Open figure in fullscreen";
+    btn.innerHTML = FULLSCREEN_ICON;
+    wrap.appendChild(btn);
+
+    btn.addEventListener("click", async () => {
+      const request = figWrap.requestFullscreen || figWrap.webkitRequestFullscreen;
+      if (!request) return;
+      try {
+        await request.call(figWrap);
+      } catch (_) {
+        // Fullscreen can be disabled by the embedding browser or policy.
+      }
+    });
+    document.addEventListener("fullscreenchange", () => {
+      if (document.fullscreenElement === figWrap) fitFigureFrame(frame, figWrap);
+    });
+    return wrap;
+  }
+
+  function extractUrls(text) {
+    const seen = new Set();
+    const urls = [];
+    let match;
+    while ((match = DETECTED_URL.exec(text))) {
+      const url = match[1].replace(/[.,;:!?'"`]+$/, "");
+      if (!seen.has(url)) {
+        seen.add(url);
+        urls.push(url);
+      }
+    }
+    DETECTED_URL.lastIndex = 0;
+    return urls;
+  }
+
+  const IMG_URL = /(\.(png|jpe?g|gif|svg|webp)(\?|$)|\/artifact_blob\/)/i;
+
+  function renderDetectedEmbeds(text, container) {
+    extractUrls(text).forEach((url) => {
+      if (url.startsWith("trackio-local-dashboard://")) {
+        const div = document.createElement("div");
+        div.className = "artifact-chip";
+        div.dataset.resUrl = url;
+        div.innerHTML =
+          "🎯 <strong>Local Trackio dashboard</strong> — publish the logbook to share it";
+        container.appendChild(div);
+      } else if (IMG_URL.test(url)) {
+        container.appendChild(renderImage(url));
+      } else if (/huggingface\.co\/spaces\//.test(url)) {
+        maybeEmbedTrackioSpace(url, container);
+      }
+    });
+  }
+
+  function renderStandaloneUrl(url) {
+    if (IMG_URL.test(url) || IMG_PATH.test(url)) return renderImage(url);
+    const item = classifyResource(url);
+    if (item) {
+      const marker = document.createElement("span");
+      marker.className = "resource-anchor";
+      marker.dataset.resUrl = item.url;
+      marker.setAttribute("aria-hidden", "true");
+      return marker;
+    }
+    const p = document.createElement("p");
+    p.innerHTML = inline(url);
+    return p;
+  }
+
+  function renderImage(url) {
+    const a = document.createElement("a");
+    a.className = "unfurl image";
+    a.href = url;
+    a.target = "_blank";
+    a.rel = "noopener";
+    const img = document.createElement("img");
+    img.loading = "lazy";
+    img.src = url;
+    img.alt = "artifact image";
+    a.appendChild(img);
+    return a;
+  }
+
+  function maybeEmbedTrackioSpace(url, container) {
+    const id = url.split("/spaces/")[1].split(/[?#]/)[0].replace(/\/$/, "");
+    const holder = document.createElement("div");
+    container.appendChild(holder);
+    getJSON(`https://huggingface.co/api/spaces/${id}`).then((d) => {
+      const tags = (d && d.tags) || [];
+      if (tags.some((t) => String(t).toLowerCase() === "trackio")) {
+        renderTrackioSpaceEmbed(holder, url, id);
+      } else {
+        holder.remove();
+      }
+    });
+  }
+
+  function jpGutter(label) {
+    const g = document.createElement("div");
+    g.className = "jp-gutter";
+    g.textContent = label;
+    return g;
+  }
+
+  function renderOutArtifact(info) {
+    const remote = !info.local && !!info.url;
+    const el = document.createElement(remote ? "a" : "div");
+    el.className = "out-artifact";
+    if (remote) {
+      el.href = info.url;
+      el.target = "_blank";
+      el.rel = "noopener";
+    }
+    el.dataset.resUrl = info.resUrl;
+    const parts = [info.type, info.size].filter(Boolean).map(esc);
+    const state = remote
+      ? `<span class="out-artifact-state open">Open ↗</span>`
+      : `<span class="out-artifact-state">publish to share</span>`;
+    const meta = parts.length ? `${parts.join(" · ")} · ${state}` : state;
+    el.innerHTML =
+      `<span class="out-artifact-ico">${ARTIFACT_ICON_IMG}</span>` +
+      `<span class="out-artifact-name">${esc(info.name)}</span>` +
+      `<span class="out-artifact-meta">${meta}</span>`;
+    return el;
+  }
+
+  function renderCodeCell(body, container, artifacts) {
+    const parts = parseFences(body);
+    const block = document.createElement("div");
+    block.className = "jp";
+    const input = document.createElement("div");
+    input.className = "jp-in";
+    const inputBody = document.createElement("div");
+    inputBody.className = "jp-in-body";
+    input.appendChild(jpGutter("In"));
+    input.appendChild(inputBody);
+    let metaEl = null;
+    let outputEl = null;
+    let outBody = null;
+    const ensureOut = () => {
+      if (outputEl) return;
+      outputEl = document.createElement("div");
+      outputEl.className = "jp-out";
+      outputEl.appendChild(jpGutter("Out"));
+      outBody = document.createElement("div");
+      outBody.className = "jp-out-body";
+      outputEl.appendChild(outBody);
+    };
+    const embedTexts = [];
+    parts.forEach((part) => {
+      if (part.kind === "text") {
+        const text = part.text.trim();
+        if (!text) return;
+        if (/^exit\s+\S+(\s|·)/.test(text)) {
+          metaEl = document.createElement("div");
+          metaEl.className = "jp-meta";
+          metaEl.textContent = text.replace(
+            /\s*·\s*[A-Z][a-z]{2} \d{1,2}, \d{4}.*$/,
+            ""
+          );
+        } else {
+          renderMarkdownPlain(text, container);
+          embedTexts.push(text);
+        }
+        return;
+      }
+      if (part.kind === "output") {
+        ensureOut();
+        const pre = document.createElement("pre");
+        pre.className = "jp-out-pre";
+        const c = document.createElement("code");
+        c.textContent = part.text;
+        pre.appendChild(c);
+        outBody.appendChild(pre);
+        outputEl.appendChild(copySnippetBtn(part.text));
+        embedTexts.push(part.text);
+        return;
+      }
+      inputBody.appendChild(renderCode(part.text, part.lang, part.title));
+    });
+    if (artifacts && artifacts.length) {
+      ensureOut();
+      const artWrap = document.createElement("div");
+      artWrap.className = "jp-artifacts";
+      artifacts.forEach((a) => {
+        artWrap.appendChild(
+          renderOutArtifact(artifactInfoFromCell(a.meta, a.body))
+        );
+      });
+      outBody.appendChild(artWrap);
+    }
+    if (inputBody.childNodes.length > 0) block.appendChild(input);
+    if (metaEl) block.appendChild(metaEl);
+    if (outputEl) block.appendChild(outputEl);
+    if (block.childNodes.length) container.appendChild(block);
+    embedTexts.forEach((text) => renderDetectedEmbeds(text, container));
+  }
+
+  function parseRow(line) {
+    let s = line.trim();
+    if (s.startsWith("|")) s = s.slice(1);
+    if (s.endsWith("|")) s = s.slice(0, -1);
+    return s.split(/(?<!\\)\|/).map((c) => c.replace(/\\\|/g, "|").trim());
+  }
+
+  const TRUTHY = ["x", "✓", "✔", "yes", "done", "true", "[x]"];
+  const CHIP_COLORS = [
+    ["#e7f0ff", "#2158d0"],
+    ["#fde8ec", "#c62a4b"],
+    ["#e6f7ee", "#1a8a55"],
+    ["#fdf0e0", "#b26a12"],
+    ["#efe9ff", "#5b3bd6"],
+    ["#e6f6f8", "#127b88"],
+  ];
+
+  function chipColor(name) {
+    let h = 0;
+    for (let i = 0; i < name.length; i++) h = (h * 31 + name.charCodeAt(i)) >>> 0;
+    return CHIP_COLORS[h % CHIP_COLORS.length];
+  }
+
+  const STATUS_MAP = {
+    "": ["Planned", "gray"],
+    planned: ["Planned", "gray"],
+    todo: ["Planned", "gray"],
+    "to do": ["Planned", "gray"],
+    backlog: ["Planned", "gray"],
+    "in progress": ["In progress", "amber"],
+    "in-progress": ["In progress", "amber"],
+    wip: ["In progress", "amber"],
+    running: ["In progress", "amber"],
+    active: ["In progress", "amber"],
+    done: ["Done", "green"],
+    complete: ["Done", "green"],
+    completed: ["Done", "green"],
+    blocked: ["Blocked", "red"],
+    failed: ["Failed", "red"],
+    abandoned: ["Abandoned", "gray"],
+  };
+
+  function statusBadge(val) {
+    const [label, tone] = STATUS_MAP[val.toLowerCase()] || [val || "—", "gray"];
+    return `<span class="badge ${tone}">${esc(label)}</span>`;
+  }
+
+  function renderTable(rows, container) {
+    if (rows.length < 2) return;
+    const header = rows[0];
+    const body = rows.slice(2);
+    const roles = header.map((h) => {
+      const t = h.toLowerCase();
+      if (t.includes("status") || t.includes("state")) return "status";
+      if (t.includes("progress") || t.includes("complete") || t.includes("done"))
+        return "check";
+      if (t === "who" || t.includes("assign") || t.includes("owner")) return "who";
+      return "text";
+    });
+    const table = document.createElement("table");
+    table.className = "board";
+    const thead = document.createElement("thead");
+    const htr = document.createElement("tr");
+    header.forEach((h, c) => {
+      const th = document.createElement("th");
+      th.textContent = h;
+      if (roles[c] === "check") th.className = "col-check";
+      htr.appendChild(th);
+    });
+    thead.appendChild(htr);
+    table.appendChild(thead);
+    const tbody = document.createElement("tbody");
+    body.forEach((cells) => {
+      const nonEmpty = cells.filter((x) => x !== "").length;
+      if (header.length > 1 && nonEmpty === 1 && cells[0]) {
+        const tr = document.createElement("tr");
+        tr.className = "section-row";
+        const td = document.createElement("td");
+        td.colSpan = header.length;
+        td.innerHTML = inline(cells[0]);
+        tr.appendChild(td);
+        tbody.appendChild(tr);
+        return;
+      }
+      const tr = document.createElement("tr");
+      header.forEach((_, c) => {
+        const td = document.createElement("td");
+        const val = (cells[c] || "").trim();
+        if (roles[c] === "status") {
+          td.className = "col-status";
+          td.innerHTML = statusBadge(val);
+        } else if (roles[c] === "check") {
+          td.className = "col-check";
+          const on = TRUTHY.indexOf(val.toLowerCase()) !== -1;
+          td.innerHTML = `<span class="box ${on ? "on" : ""}">${on ? "✓" : ""}</span>`;
+        } else if (roles[c] === "who") {
+          if (!val || /^to assign$/i.test(val)) {
+            td.innerHTML = `<span class="who-chip muted">${esc(val || "—")}</span>`;
+          } else {
+            const [bg, fg] = chipColor(val);
+            td.innerHTML = `<span class="who-chip" style="background:${bg};color:${fg}">${esc(val)}</span>`;
+          }
+        } else {
+          td.innerHTML = inline(val);
+        }
+        tr.appendChild(td);
+      });
+      const link = tr.querySelector('a[href^="#/"]');
+      if (link) {
+        tr.classList.add("linked-row");
+        tr.addEventListener("click", (e) => {
+          if (e.target.tagName !== "A") location.hash = link.getAttribute("href");
+        });
+      }
+      tbody.appendChild(tr);
+    });
+    table.appendChild(tbody);
+    const wrap = document.createElement("div");
+    wrap.className = "board-wrap";
+    wrap.appendChild(table);
+    container.appendChild(wrap);
+  }
+
+  const HL_RULES = {
+    python: [
+      ["comment", /#[^\n]*/],
+      ["string", /'''[\s\S]*?'''|"""[\s\S]*?"""|'(?:\\.|[^'\\])*'|"(?:\\.|[^"\\])*"/],
+      [
+        "keyword",
+        /\b(?:def|class|return|if|elif|else|for|while|import|from|as|with|try|except|finally|raise|in|not|and|or|is|None|True|False|lambda|yield|global|nonlocal|assert|pass|break|continue|async|await|print)\b/,
+      ],
+      ["number", /\b\d[\d_.eE+-]*\b/],
+    ],
+    bash: [
+      ["comment", /#[^\n]*/],
+      ["string", /'(?:\\.|[^'\\])*'|"(?:\\.|[^"\\])*"/],
+      ["keyword", /\b(?:if|then|else|fi|for|in|do|done|while|case|esac|function|export|source|echo|cd|return|local)\b/],
+      ["number", /(?<=\s)-{1,2}[a-zA-Z][\w-]*/],
+    ],
+    json: [
+      ["string", /"(?:\\.|[^"\\])*"/],
+      ["keyword", /\b(?:true|false|null)\b/],
+      ["number", /-?\b\d[\d.eE+-]*\b/],
+    ],
+    yaml: [
+      ["comment", /#[^\n]*/],
+      ["string", /'(?:\\.|[^'\\])*'|"(?:\\.|[^"\\])*"/],
+      ["keyword", /\b(?:true|false|null|yes|no)\b/],
+      ["number", /-?\b\d[\d.eE+-]*\b/],
+    ],
+  };
+  HL_RULES.javascript = HL_RULES.python;
+  HL_RULES.typescript = HL_RULES.python;
+  HL_RULES.sql = [
+    ["comment", /--[^\n]*/],
+    ["string", /'(?:\\.|[^'\\])*'/],
+    [
+      "keyword",
+      /\b(?:SELECT|FROM|WHERE|JOIN|LEFT|RIGHT|INNER|OUTER|ON|GROUP|BY|ORDER|LIMIT|INSERT|INTO|VALUES|UPDATE|SET|DELETE|CREATE|TABLE|AS|AND|OR|NOT|NULL|COUNT|DISTINCT|IN)\b/i,
+    ],
+    ["number", /\b\d[\d.]*\b/],
+  ];
+
+  function highlightCode(code, lang) {
+    const rules = HL_RULES[lang];
+    if (!rules) return esc(code);
+    const combined = new RegExp(rules.map((r) => "(" + r[1].source + ")").join("|"), "g");
+    let out = "";
+    let last = 0;
+    let m;
+    while ((m = combined.exec(code))) {
+      if (m[0] === "") {
+        combined.lastIndex++;
+        continue;
+      }
+      out += esc(code.slice(last, m.index));
+      let gi = 1;
+      while (gi < m.length && m[gi] === undefined) gi++;
+      out += `<span class="tok-${rules[gi - 1][0]}">${esc(m[0])}</span>`;
+      last = m.index + m[0].length;
+    }
+    out += esc(code.slice(last));
+    return out;
+  }
+
+  function copySnippetBtn(text) {
+    const btn = document.createElement("button");
+    btn.type = "button";
+    btn.className = "copy-snippet";
+    btn.title = "Copy";
+    btn.textContent = "⧉";
+    btn.addEventListener("click", (e) => {
+      e.preventDefault();
+      e.stopPropagation();
+      copyText(text, btn, "⧉");
+    });
+    return btn;
+  }
+
+  function renderCode(code, lang, title) {
+    const pre = document.createElement("pre");
+    pre.className = "hl";
+    const c = document.createElement("code");
+    c.innerHTML = highlightCode(code, lang);
+    pre.appendChild(c);
+    if (!title) {
+      const wrap = document.createElement("div");
+      wrap.className = "snippet";
+      wrap.appendChild(pre);
+      wrap.appendChild(copySnippetBtn(code));
+      return wrap;
+    }
+    const det = document.createElement("details");
+    det.className = "code-accordion";
+    det.dataset.resUrl = `trackio-script://${title}`;
+    const sum = document.createElement("summary");
+    sum.innerHTML =
+      `<span class="code-ico">&lt;/&gt;</span>` +
+      `<span class="code-name">${esc(title)}</span>`;
+    sum
+      .querySelector(".code-name")
+      .addEventListener("click", (e) => e.preventDefault());
+    det.appendChild(sum);
+    const wrap = document.createElement("div");
+    wrap.className = "snippet";
+    wrap.appendChild(pre);
+    wrap.appendChild(copySnippetBtn(code));
+    det.appendChild(wrap);
+    return det;
+  }
+
+  const IMG_PATH = /^[^\s]+\.(png|jpe?g|gif|svg|webp)$/i;
+
+  function renderList(items, container) {
+    let ul = null;
+    items.forEach((item) => {
+      if (URL_ONLY.test(item) || IMG_PATH.test(item)) {
+        const el = renderStandaloneUrl(item);
+        if (el) {
+          ul = null;
+          container.appendChild(el);
+        }
+      } else if (item.indexOf("📦 Artifact") !== -1) {
+        ul = null;
+        const div = document.createElement("div");
+        div.className = "artifact-chip";
+        div.innerHTML = inline(item.replace("📦", "🪣"));
+        container.appendChild(div);
+      } else if (item.indexOf("trackio-local-dashboard://") !== -1) {
+        ul = null;
+        const uri = item.match(/trackio-local-dashboard:\/\/\S+/)?.[0] || "";
+        const div = document.createElement("div");
+        div.className = "artifact-chip";
+        if (uri) div.dataset.resUrl = uri;
+        div.innerHTML =
+          "🎯 <strong>Local dashboard</strong> — publish the logbook to share it";
+        container.appendChild(div);
+      } else {
+        if (!ul) {
+          ul = document.createElement("ul");
+          container.appendChild(ul);
+        }
+        const li = document.createElement("li");
+        li.innerHTML = inline(item);
+        ul.appendChild(li);
+      }
+    });
+  }
+
+  /* -------------------- resources rail -------------------- */
+
+  function fmt(n) {
+    if (n == null) return null;
+    if (n >= 1e6) return (n / 1e6).toFixed(1) + "M";
+    if (n >= 1e3) return (n / 1e3).toFixed(1) + "k";
+    return String(n);
+  }
+
+  const RESOURCE_SECTIONS = [
+    ["dashboard", "Dashboards", "🎯"],
+    ["model", "Models", "🤗"],
+    ["dataset", "Datasets", "📊"],
+    ["space", "Spaces", "🚀"],
+    ["artifact", "Artifacts", "🪣"],
+    ["paper", "Papers", "📄"],
+    ["repo", "Code", "🐙"],
+    ["job", "Jobs", "⚙️"],
+    ["bucket", "Buckets", "🪣"],
+  ];
+
+  const RESOURCE_ICONS = Object.fromEntries(
+    RESOURCE_SECTIONS.map(([kind, , icon]) => [kind, icon])
+  );
+
+  const ARTIFACT_ICON_IMG = `<img class="art-ico" src="./bucket-icon.svg" alt="" />`;
+  const DASHBOARD_ICON_IMG = `<img class="art-ico" src="./trackio-logo-light.png" alt="" />`;
+
+  const RESOURCE_DESC = {
+    dashboard: "Dashboard",
+    model: "Model",
+    dataset: "Dataset",
+    space: "Space",
+    artifact: "Artifact — in Bucket",
+    paper: "Paper",
+    repo: "Repository",
+    job: "Job — status & logs",
+    bucket: "Bucket — artifacts & data",
+  };
+
+  const HF_NON_MODEL_PREFIX =
+    /^(datasets|spaces|jobs|buckets|papers|blog|docs|api|posts|collections|organizations|settings|new|join|login|pricing|tasks|learn|chat|models)(\/|$)/;
+
+  function hfId(url, marker) {
+    return url.split(marker)[1].split(/[?#]/)[0].replace(/\/$/, "");
+  }
+
+  function classifyResource(url) {
+    if (IMG_URL.test(url)) {
+      return null;
+    }
+    let m;
+    if (url.startsWith("trackio-local-dashboard://")) {
+      return {
+        kind: "dashboard",
+        id: url.slice("trackio-local-dashboard://".length),
+        url,
+        local: true,
+      };
+    }
+    if (url.startsWith("trackio-artifact://")) {
+      return {
+        kind: "artifact",
+        id: url.slice("trackio-artifact://".length),
+        url,
+        local: true,
+      };
+    }
+    if (url.startsWith("trackio-local-path://")) {
+      return {
+        kind: "artifact",
+        id: url.slice("trackio-local-path://".length),
+        url,
+        local: true,
+      };
+    }
+    if ((m = url.match(/huggingface\.co\/buckets\/[^#\s]+#(.+)/))) {
+      return { kind: "artifact", id: decodeURIComponent(m[1]), url };
+    }
+    if (/huggingface\.co\/datasets\/[^/]+\/[^/]+/.test(url)) {
+      return { kind: "dataset", id: hfId(url, "/datasets/"), url };
+    }
+    if (/huggingface\.co\/spaces\/[^/]+\/[^/]+/.test(url)) {
+      return { kind: "space", id: hfId(url, "/spaces/"), url };
+    }
+    if (/huggingface\.co\/jobs\//.test(url)) {
+      const parts = hfId(url, "/jobs/").split("/");
+      const jid = parts[1] || "";
+      return {
+        kind: "job",
+        id: parts[0] + (jid ? ` · ${jid.slice(0, 12)}${jid.length > 12 ? "…" : ""}` : ""),
+        url,
+      };
+    }
+    if (/huggingface\.co\/buckets\//.test(url)) {
+      return { kind: "bucket", id: hfId(url, "/buckets/"), url };
+    }
+    if (/huggingface\.co\/papers\//.test(url)) {
+      return { kind: "paper", id: `Paper ${hfId(url, "/papers/")}`, url };
+    }
+    if ((m = url.match(/arxiv\.org\/(?:abs|pdf)\/([^?#\s]+)/))) {
+      return { kind: "paper", id: `arXiv:${m[1].replace(/\.pdf$/, "")}`, url };
+    }
+    if ((m = url.match(/github\.com\/([^/?#]+\/[^/?#]+)/))) {
+      return { kind: "repo", id: m[1], url };
+    }
+    if ((m = url.match(/huggingface\.co\/([^?#]+)/))) {
+      const rest = m[1].replace(/\/$/, "");
+      if (/^[^/]+\/[^/]+$/.test(rest) && !HF_NON_MODEL_PREFIX.test(rest)) {
+        return { kind: "model", id: rest, url };
+      }
+    }
+    return null;
+  }
+
+  async function fillRailMeta(item, el) {
+    if (item.local) return;
+    const meta = el.querySelector(".rail-meta");
+    const set = (parts) => {
+      const text = parts.filter(Boolean).join(" · ");
+      if (text) meta.textContent = text;
+    };
+    if (item.kind === "model") {
+      const d = await getJSON(`https://huggingface.co/api/models/${item.id}`);
+      if (d) set([d.pipeline_tag, `↓ ${fmt(d.downloads)}`, `♥ ${fmt(d.likes)}`]);
+    } else if (item.kind === "dataset") {
+      const d = await getJSON(`https://huggingface.co/api/datasets/${item.id}`);
+      if (d) set([`↓ ${fmt(d.downloads)}`, `♥ ${fmt(d.likes)}`]);
+    } else if (item.kind === "space" || item.kind === "dashboard") {
+      const d = await getJSON(`https://huggingface.co/api/spaces/${item.id}`);
+      if (d) set([d.sdk, `♥ ${fmt(d.likes)}`]);
+    } else if (item.kind === "repo") {
+      const d = await getJSON(`https://api.github.com/repos/${item.id}`);
+      if (d) set([`★ ${fmt(d.stargazers_count)}`, d.language]);
+    } else if (item.kind === "paper") {
+      const m = item.id.match(/^(?:arXiv:|Paper )(.+)$/);
+      if (!m) return;
+      const arxivId = m[1].replace(/v\d+$/, "");
+      const d = await getJSON(`https://huggingface.co/api/papers/${arxivId}`);
+      if (d && d.id) {
+        if (el.href) el.href = `https://huggingface.co/papers/${d.id}`;
+        const title =
+          d.title && d.title.length > 70 ? `${d.title.slice(0, 69)}…` : d.title;
+        set([title, d.upvotes ? `▲ ${fmt(d.upvotes)}` : null]);
+      }
+    }
+  }
+
+  const BARE_ID_SKIP_DIRS = new Set([
+    "scripts",
+    "configs",
+    "config",
+    "results",
+    "figures",
+    "data",
+    "datasets",
+    "src",
+    "tests",
+    "test",
+    "examples",
+    "pages",
+    "assets",
+    "docs",
+    "outputs",
+    "output",
+    "checkpoints",
+    "models",
+    "utils",
+    "lib",
+    "bin",
+    "tmp",
+    "node_modules",
+    "dist",
+    "build",
+  ]);
+  const FILE_EXT_RE =
+    /\.(py|pyc|js|ts|jsx|tsx|json|jsonl|yaml|yml|csv|tsv|md|txt|sh|bash|html|css|png|jpe?g|svg|gif|webp|ipynb|toml|cfg|ini|lock|pdf|whl|gz|zip|tar|pt|pth|bin|safetensors|db|sqlite)$/i;
+
+  async function detectBareModelIds(text, groups) {
+    const stripped = text.replace(DETECTED_URL, " ");
+    DETECTED_URL.lastIndex = 0;
+    const seen = new Set();
+    const candidates = [];
+    const re = /(^|[\s"'`(=[])([A-Za-z0-9][\w.-]*\/[A-Za-z0-9][\w.-]*)/g;
+    let m;
+    while ((m = re.exec(stripped)) && candidates.length < 15) {
+      const id = m[2].replace(/[.:,]+$/, "");
+      if (seen.has(id)) continue;
+      seen.add(id);
+      if (FILE_EXT_RE.test(id)) continue;
+      if (BARE_ID_SKIP_DIRS.has(id.split("/")[0].toLowerCase())) continue;
+      candidates.push(id);
+    }
+    const results = await Promise.all(
+      candidates.map((id) => getJSON(`https://huggingface.co/api/models/${id}`))
+    );
+    let added = false;
+    const confirmed = [];
+    results.forEach((d, i) => {
+      if (!d || !d.id) return;
+      const id = candidates[i];
+      confirmed.push(id);
+      const url = `https://huggingface.co/${id}`;
+      if (!groups.has("model")) groups.set("model", new Map());
+      if (!groups.get("model").has(url)) {
+        groups.get("model").set(url, { kind: "model", id, url });
+        added = true;
+      }
+    });
+    return { added, confirmed };
+  }
+
+  function chipifyBareIds(ids, container) {
+    if (!ids.length) return;
+    const escaped = ids.map((id) => id.replace(/[.*+?^${}()|[\]\\]/g, "\\$&"));
+    const pattern = new RegExp("(" + escaped.join("|") + ")");
+    const splitter = new RegExp(pattern.source, "g");
+    container
+      .querySelectorAll(".cell.markdown .cell-body")
+      .forEach((body) => {
+        const walker = document.createTreeWalker(body, NodeFilter.SHOW_TEXT, {
+          acceptNode(node) {
+            if (!pattern.test(node.nodeValue)) return NodeFilter.FILTER_REJECT;
+            for (
+              let el = node.parentElement;
+              el && el !== body;
+              el = el.parentElement
+            ) {
+              if (["A", "CODE", "PRE", "BUTTON"].indexOf(el.tagName) !== -1) {
+                return NodeFilter.FILTER_REJECT;
+              }
+            }
+            return NodeFilter.FILTER_ACCEPT;
+          },
+        });
+        const nodes = [];
+        while (walker.nextNode()) nodes.push(walker.currentNode);
+        nodes.forEach((node) => {
+          const frag = document.createDocumentFragment();
+          node.nodeValue.split(splitter).forEach((part) => {
+            if (ids.indexOf(part) !== -1) {
+              const holder = document.createElement("span");
+              holder.innerHTML = resChipHtml({
+                kind: "model",
+                id: part,
+                url: `https://huggingface.co/${part}`,
+              });
+              frag.appendChild(holder.firstChild);
+            } else if (part) {
+              frag.appendChild(document.createTextNode(part));
+            }
+          });
+          node.parentNode.replaceChild(frag, node);
+        });
+      });
+  }
+
+  let RAIL_TOKEN = 0;
+  const RAIL_EXCLUDE_KINDS = new Set(["paper", "repo", "artifact", "dashboard"]);
+
+  function railDashboardItem(it) {
+    return {
+      kind: "dashboard",
+      id: it.id,
+      url: it.local ? it.resUrl : it.url || it.resUrl,
+      local: it.local,
+      railLabel: "Dashboard",
+    };
+  }
+
+  function promoteTrackioSpacesInRail(groups, dashResUrls, body, rail, token) {
+    const spaceGroup = groups.get("space");
+    if (!spaceGroup || !spaceGroup.size) return;
+    spaceGroup.forEach((item, url) => {
+      getJSON(`https://huggingface.co/api/spaces/${item.id}`)
+        .then((d) => {
+          if (rail.dataset.renderToken !== token) return;
+          const tags = (d && d.tags) || [];
+          if (!tags.some((t) => String(t).toLowerCase() === "trackio")) return;
+          if (dashResUrls.has(url)) return;
+          spaceGroup.delete(url);
+          if (!spaceGroup.size) groups.delete("space");
+          if (!groups.has("dashboard")) groups.set("dashboard", new Map());
+          groups.get("dashboard").set(url, {
+            kind: "dashboard",
+            id: item.id,
+            url: item.url,
+            local: false,
+            railLabel: "Dashboard",
+          });
+          dashResUrls.add(url);
+          paintRail(groups, body, rail);
+        })
+        .catch(() => {});
+    });
+  }
+
+  function renderRail(md, body, rail) {
+    const token = String(++RAIL_TOKEN);
+    rail.dataset.renderToken = token;
+    const scanText = md.replace(
+      /(`{3,4}|~{3,4})(html|raw)[^\n]*\n[\s\S]*?\n\1/g,
+      " "
+    );
+    const groups = new Map();
+    const dashMap = new Map();
+    const dashResUrls = new Set();
+    cellDashboardItems(md).forEach((it) => {
+      if (dashMap.has(it.resUrl)) return;
+      dashMap.set(it.resUrl, railDashboardItem(it));
+      dashResUrls.add(it.resUrl);
+    });
+    if (dashMap.size) groups.set("dashboard", dashMap);
+    extractUrls(scanText).forEach((url) => {
+      const item = classifyResource(url);
+      if (!item) return;
+      if (RAIL_EXCLUDE_KINDS.has(item.kind)) return;
+      if (dashResUrls.has(url)) return;
+      if (!groups.has(item.kind)) groups.set(item.kind, new Map());
+      groups.get(item.kind).set(item.url, item);
+    });
+    const artMap = new Map();
+    cellArtifactItems(md).forEach((it) => {
+      if (artMap.has(it.resUrl)) return;
+      const label = it.type
+        ? it.type.charAt(0).toUpperCase() + it.type.slice(1)
+        : "Artifact";
+      artMap.set(it.resUrl, {
+        kind: "artifact",
+        id: it.name,
+        url: it.local ? it.resUrl : it.url || it.resUrl,
+        local: it.local,
+        railLabel: label,
+        size: it.size,
+      });
+    });
+    if (artMap.size) groups.set("artifact", artMap);
+    paintRail(groups, body, rail);
+    promoteTrackioSpacesInRail(groups, dashResUrls, body, rail, token);
+    detectBareModelIds(scanText, groups)
+      .then((result) => {
+        if (rail.dataset.renderToken !== token) return;
+        chipifyBareIds(result.confirmed, body);
+        if (result.added) paintRail(groups, body, rail);
+      })
+      .catch(() => {});
+  }
+
+  function paintRail(groups, body, rail) {
+    rail.innerHTML = "";
+    RESOURCE_SECTIONS.forEach(([kind, label, icon]) => {
+      const group = groups.get(kind);
+      if (!group || !group.size) return;
+      group.forEach((item) => {
+        const el = document.createElement(item.local ? "div" : "a");
+        el.className = item.local ? "rail-item rail-local" : "rail-item";
+        if (!item.local) {
+          el.href = item.url;
+          el.target = "_blank";
+          el.rel = "noopener";
+        }
+        el.dataset.resUrl = item.url;
+        let desc;
+        if (kind === "artifact") {
+          const state = item.local ? "publish to share" : "Open ↗";
+          desc = item.size ? `${item.size} · ${state}` : state;
+        } else if (kind === "dashboard") {
+          desc = item.local ? "publish to share" : "Open ↗";
+        } else {
+          desc = item.local ? "publish to share" : RESOURCE_DESC[kind];
+        }
+        const kindLabel = item.railLabel || label.replace(/s$/, "");
+        const iconHtml =
+          kind === "artifact"
+            ? ARTIFACT_ICON_IMG
+            : kind === "dashboard"
+              ? DASHBOARD_ICON_IMG
+              : `<span>${icon}</span>`;
+        el.innerHTML =
+          `<div class="rail-kind">${iconHtml}${esc(kindLabel)}</div>` +
+          `<div class="rail-title">${esc(item.id)}</div>` +
+          `<div class="rail-meta">${esc(desc)}</div>`;
+        rail.appendChild(el);
+        fillRailMeta(item, el)
+          .catch(() => {})
+          .finally(() => scheduleRailPosition(body, rail));
+      });
+    });
+    rail.hidden = !rail.childElementCount;
+    scheduleRailPosition(body, rail);
+  }
+
+  function resourceAnchor(body, url) {
+    return body.querySelector(`[data-res-url="${CSS.escape(url)}"]`);
+  }
+
+  function positionRail(body, rail) {
+    if (rail.hidden || !rail.isConnected) return;
+    const bodyRect = body.getBoundingClientRect();
+    const items = Array.from(rail.querySelectorAll(".rail-item")).map((el, index) => {
+      const anchor = resourceAnchor(body, el.dataset.resUrl);
+      return {
+        el,
+        index,
+        desired: anchor
+          ? Math.max(0, anchor.getBoundingClientRect().top - bodyRect.top)
+          : 0,
+      };
+    });
+    items.sort((a, b) => a.desired - b.desired || a.index - b.index);
+    let cursor = 0;
+    items.forEach(({ el, desired }) => {
+      const top = Math.max(desired, cursor);
+      el.style.top = `${top}px`;
+      cursor = top + el.offsetHeight + 10;
+    });
+    rail.style.minHeight = `${Math.max(body.offsetHeight, cursor)}px`;
+  }
+
+  function scheduleRailPosition(body, rail) {
+    cancelAnimationFrame(Number(rail.dataset.positionFrame || 0));
+    rail.dataset.positionFrame = String(
+      requestAnimationFrame(() => positionRail(body, rail))
+    );
+  }
+
+  function dashboardSubdomainFromUrl(url) {
+    return spaceIdFromUrl(url).toLowerCase().replace(/[^a-z0-9-]/g, "-");
+  }
+
+  function dashboardOpenLink(head, url) {
+    if (!head || !url) return;
+    const meta = head.querySelector(".cell-meta");
+    if (!meta) return;
+    let link = meta.querySelector(".cell-open");
+    if (!link) {
+      link = document.createElement("a");
+      link.className = "cell-open";
+      link.target = "_blank";
+      link.rel = "noopener";
+      meta.insertBefore(link, meta.firstChild);
+    }
+    link.href = url;
+    link.textContent = "Open ↗";
+  }
+
+  function dashboardFrame(src) {
+    const iframe = document.createElement("iframe");
+    iframe.className = "dashboard-frame";
+    iframe.src = src;
+    iframe.loading = "lazy";
+    iframe.allow = "clipboard-read; clipboard-write; fullscreen";
+    return iframe;
+  }
+
+  function renderDashboardCell(meta, body, container, head) {
+    const project = meta.dashboard_project || "";
+    const holder = document.createElement("div");
+    holder.className = "dashboard-shell";
+    container.appendChild(holder);
+    const space = body.match(/https:\/\/huggingface\.co\/spaces\/[^\s<>)"'`]+/);
+    if (space) {
+      const url = space[0];
+      dashboardOpenLink(head, url);
+      holder.appendChild(
+        dashboardFrame(
+          `https://${dashboardSubdomainFromUrl(url)}.hf.space/?sidebar=hidden&hide_empty_tabs=true`
+        )
+      );
+      return;
+    }
+    if (!isLocalPreview()) {
+      holder.className = "artifact-chip";
+      holder.dataset.resUrl = `trackio-local-dashboard://${project}`;
+      holder.innerHTML =
+        "🎯 <strong>Local Trackio dashboard</strong> — publish the logbook to share it";
+      return;
+    }
+    const open = "/dashboard/?project=" + encodeURIComponent(project);
+    dashboardOpenLink(head, open);
+    holder.appendChild(
+      dashboardFrame(open + "&sidebar=hidden&hide_empty_tabs=true"),
+    );
+  }
+
+  const CACHE_PREFIX = "trackio-logbook:";
+  const CACHE_TTL_MS = 24 * 60 * 60 * 1000;
+  const CACHE_MISS_TTL_MS = 60 * 60 * 1000;
+
+  function cacheGet(url) {
+    try {
+      const raw = localStorage.getItem(CACHE_PREFIX + url);
+      if (!raw) return undefined;
+      const entry = JSON.parse(raw);
+      const ttl = entry.d === null ? CACHE_MISS_TTL_MS : CACHE_TTL_MS;
+      if (Date.now() - entry.t > ttl) {
+        localStorage.removeItem(CACHE_PREFIX + url);
+        return undefined;
+      }
+      return entry.d;
+    } catch (e) {
+      return undefined;
+    }
+  }
+
+  function cacheSet(url, data) {
+    try {
+      localStorage.setItem(
+        CACHE_PREFIX + url,
+        JSON.stringify({ t: Date.now(), d: data })
+      );
+    } catch (e) {}
+  }
+
+  async function getJSON(url) {
+    if (UNFURL_CACHE[url] !== undefined) return UNFURL_CACHE[url];
+    const cached = cacheGet(url);
+    if (cached !== undefined) {
+      UNFURL_CACHE[url] = cached;
+      return cached;
+    }
+    try {
+      const r = await fetch(url);
+      if (!r.ok) throw new Error(r.status);
+      const j = await r.json();
+      UNFURL_CACHE[url] = j;
+      cacheSet(url, j);
+      return j;
+    } catch (e) {
+      UNFURL_CACHE[url] = null;
+      cacheSet(url, null);
+      return null;
+    }
+  }
+
+  /* -------------------- routing / render -------------------- */
+
+  function buildTree() {
+    const tree = document.getElementById("tree");
+    tree.innerHTML = "";
+    const nodes = [];
+    (MANIFEST.root.children || []).forEach((c) => flattenTree(c, 0, nodes));
+    nodes.forEach(({ node, depth }) => {
+      const a = document.createElement("a");
+      a.href = "#/" + node.slug;
+      a.className = "depth-" + depth;
+      a.dataset.slug = node.slug;
+      const mark = document.createElement("span");
+      mark.className = "tree-mark";
+      mark.textContent = "§";
+      a.appendChild(mark);
+      a.appendChild(document.createTextNode(" " + node.title));
+      tree.appendChild(a);
+    });
+  }
+
+  function highlight(slug) {
+    document
+      .querySelectorAll("#tree a")
+      .forEach((a) => a.classList.toggle("active", a.dataset.slug === slug));
+    document
+      .getElementById("book-head")
+      .classList.toggle("active", slug === MANIFEST.root.slug);
+  }
+
+  function clearPageCache() {
+    Object.keys(PAGE_CACHE).forEach((key) => {
+      delete PAGE_CACHE[key];
+    });
+  }
+
+  function isLocalPreview() {
+    return ["localhost", "127.0.0.1", "::1"].includes(location.hostname);
+  }
+
+  async function fetchManifest() {
+    const suffix = isLocalPreview() ? `?t=${Date.now()}` : "";
+    return await (await fetch("./logbook.json" + suffix, { cache: "no-store" })).json();
+  }
+
+  async function fetchPage(node) {
+    if (PAGE_CACHE[node.file]) return PAGE_CACHE[node.file];
+    try {
+      const suffix = isLocalPreview()
+        ? `?rev=${encodeURIComponent(MANIFEST.revision || "")}`
+        : "";
+      const r = await fetch("./" + node.file + suffix, { cache: "no-store" });
+      PAGE_CACHE[node.file] = await r.text();
+    } catch (e) {
+      PAGE_CACHE[node.file] = "# " + node.title + "\n\n_Could not load section._";
+    }
+    return PAGE_CACHE[node.file];
+  }
+
+  function allNodes() {
+    const nodes = [];
+    flattenTree(MANIFEST.root, 0, nodes);
+    return nodes.map(({ node }) => node);
+  }
+
+  function collectPinnedCells(markdown, nodes) {
+    const cells = [];
+    markdown.forEach((text, index) => {
+      const cellRe = /(^|\n)---\n<!-- trackio-cell\n([\s\S]*?)\n-->\n([\s\S]*?)(?=\n---\n<!-- trackio-cell\n|\s*$)/g;
+      let match;
+      let cellIndex = 0;
+      while ((match = cellRe.exec(text))) {
+        const meta = parseCellMeta(match[2]);
+        if (isPinned(meta)) {
+          cells.push({
+            meta,
+            body: match[3],
+            node: nodes[index],
+            index: cells.length,
+            order: meta.pinned_at || meta.created_at || "",
+            cellIndex,
+          });
+        }
+        cellIndex++;
+      }
+    });
+    return cells.sort(
+      (a, b) =>
+        a.order.localeCompare(b.order) ||
+        a.index - b.index ||
+        a.cellIndex - b.cellIndex
+    );
+  }
+
+  function renderPinnedNotes(cells, container) {
+    if (!cells.length) return;
+    const deck = document.createElement("section");
+    deck.className = "pinned-notes";
+    const list = document.createElement("div");
+    list.className = "pinned-notes-list";
+    cells.forEach(({ meta, body }) => {
+      const cell = renderCell(meta, body, list);
+      cell.classList.add("pinned-copy");
+    });
+    deck.appendChild(list);
+    const anchor =
+      container.querySelector(".logbook-stats") ||
+      container.querySelector(".agent-hint");
+    container.insertBefore(deck, anchor ? anchor.nextSibling : container.firstChild);
+    container.closest(".book-intro").classList.add("has-pinned-notes");
+  }
+
+  function removeIndexProse(body) {
+    const h1 = Array.from(body.children).find((el) => el.tagName === "H1");
+    if (!h1) return;
+    let current = h1.nextElementSibling;
+    while (current && current.tagName !== "H2") {
+      const next = current.nextElementSibling;
+      current.remove();
+      current = next;
+    }
+  }
+
+  function removePageDirectory(body) {
+    const heading = Array.from(body.children).find(
+      (el) => el.tagName === "H2" && el.textContent.trim().toLowerCase() === "pages"
+    );
+    if (!heading) return;
+    let current = heading;
+    while (current) {
+      const next = current.nextElementSibling;
+      current.remove();
+      if (next && ["H1", "H2"].includes(next.tagName)) break;
+      current = next;
+    }
+  }
+
+  const RAIL_OBSERVERS = [];
+
+  async function renderLogbook(opts = {}) {
+    const scrollY = window.scrollY;
+    const page = document.getElementById("page");
+    RAIL_OBSERVERS.splice(0).forEach((observer) => observer.disconnect());
+    page.innerHTML = "";
+    const nodes = allNodes();
+    const markdown = await Promise.all(nodes.map(fetchPage));
+    const pinnedCells = collectPinnedCells(markdown, nodes);
+    let bookIntroBody = null;
+    nodes.forEach((node, index) => {
+      const section = document.createElement("section");
+      section.className = "page-section";
+      section.id = "/" + node.slug;
+      section.dataset.slug = node.slug;
+
+      const layout = document.createElement("div");
+      layout.className = "page-layout";
+      const body = document.createElement("div");
+      body.className = "page-body";
+      const rail = document.createElement("aside");
+      rail.className = "context-rail";
+      rail.setAttribute("aria-label", `Resources for ${node.title}`);
+
+      renderMarkdown(markdown[index], body);
+      if (node.slug === MANIFEST.root.slug) {
+        section.classList.add("book-intro");
+        removeIndexProse(body);
+        removePageDirectory(body);
+        const hint = buildAgentHint();
+        const h1 = body.querySelector("h1");
+        if (h1 && h1.parentNode === body) {
+          body.insertBefore(hint, h1.nextSibling);
+        } else {
+          body.prepend(hint);
+        }
+        hint.after(buildLogbookStats(markdown));
+        bookIntroBody = body;
+      }
+      layout.appendChild(body);
+      layout.appendChild(rail);
+      section.appendChild(layout);
+      page.appendChild(section);
+      renderRail(markdown[index], body, rail);
+      if (window.ResizeObserver) {
+        const observer = new ResizeObserver(() => scheduleRailPosition(body, rail));
+        observer.observe(body);
+        observer.observe(rail);
+        RAIL_OBSERVERS.push(observer);
+      }
+    });
+    if (bookIntroBody) renderPinnedNotes(pinnedCells, bookIntroBody);
+    if (bookIntroBody) {
+      const section = bookIntroBody.closest(".book-intro");
+      const hasExtra = Array.from(bookIntroBody.children).some(
+        (el) =>
+          el.tagName !== "H1" &&
+          !el.classList.contains("agent-hint") &&
+          !el.classList.contains("logbook-stats") &&
+          !el.classList.contains("pinned-notes")
+      );
+      if (section && !section.classList.contains("has-pinned-notes") && !hasExtra) {
+        section.classList.add("book-intro-tight");
+      }
+    }
+    requestAnimationFrame(() => {
+      if (opts.preserveScroll) {
+        window.scrollTo(0, scrollY);
+      } else {
+        scrollToHash({ behavior: "auto" });
+      }
+      updateActiveSection();
+    });
+  }
+
+  function setupResourceHover() {
+    document.addEventListener("mouseover", (e) => {
+      const el = e.target.closest && e.target.closest("[data-res-url]");
+      if (!el || el.classList.contains("rail-item")) return;
+      const url = el.getAttribute("data-res-url");
+      const section = el.closest(".page-section");
+      const scope = section || document;
+      scope.querySelectorAll(".context-rail [data-res-url]").forEach((n) => {
+        n.classList.toggle("res-hl", n.getAttribute("data-res-url") === url);
+      });
+    });
+    document.addEventListener("mouseout", (e) => {
+      const el = e.target.closest && e.target.closest("[data-res-url]");
+      if (!el || el.classList.contains("rail-item")) return;
+      document.querySelectorAll(".context-rail .res-hl").forEach((n) => {
+        n.classList.remove("res-hl");
+      });
+    });
+  }
+
+  let STATS_TOKEN = 0;
+  let STATS_LISTENERS = false;
+
+  function fmtBytes(n) {
+    if (n == null || isNaN(n)) return null;
+    if (n < 1000) return `${n} B`;
+    const units = ["kB", "MB", "GB", "TB"];
+    let v = n;
+    let i = -1;
+    do {
+      v /= 1000;
+      i++;
+    } while (v >= 1000 && i < units.length - 1);
+    return `${v.toFixed(v < 10 ? 1 : 0)} ${units[i]}`;
+  }
+
+  function spaceIdFromUrl(url) {
+    return url.split("/spaces/")[1].split(/[?#]/)[0].replace(/\/$/, "");
+  }
+
+  const LB_CELL_RE = /(^|\n)---\n<!-- trackio-cell\n([\s\S]*?)\n-->\n([\s\S]*?)(?=\n---\n<!-- trackio-cell\n|\s*$)/g;
+
+  function cellDashboardItems(md) {
+    const re = new RegExp(LB_CELL_RE.source, "g");
+    const items = [];
+    let m;
+    while ((m = re.exec(md))) {
+      const meta = parseCellMeta(m[2]);
+      if (meta.type !== "dashboard") continue;
+      const body = m[3];
+      const project = meta.dashboard_project || "";
+      const sp = body.match(/https:\/\/huggingface\.co\/spaces\/[^\s<>)"'`]+/);
+      const local = !sp;
+      const url = sp ? sp[0] : "";
+      const resUrl = local ? `trackio-local-dashboard://${project}` : url;
+      items.push({
+        id: local ? project : spaceIdFromUrl(url),
+        local,
+        url,
+        resUrl,
+      });
+    }
+    return items;
+  }
+
+  function artifactInfoFromCell(meta, body) {
+    const name = meta.artifact || meta.path || "";
+    let size = null;
+    const sm = body.match(/·\s*([\d.]+\s*[kMGT]?B)\b/);
+    if (sm) size = sm[1].trim();
+    if (!size && meta.size != null) size = fmtBytes(meta.size);
+    const bucket = body.match(/https:\/\/huggingface\.co\/buckets\/[^\s<>)"'`]+/);
+    const artUri = body.match(/trackio-artifact:\/\/\S+/);
+    const pathUri = body.match(/trackio-local-path:\/\/\S+/);
+    const url = bucket ? bucket[0] : "";
+    const local = !bucket;
+    const resUrl =
+      url || (artUri ? artUri[0] : pathUri ? pathUri[0] : `trackio-artifact://${name}`);
+    return {
+      name,
+      type: meta.artifact_type || "",
+      size,
+      local,
+      isPathRef: !!meta.path,
+      url,
+      resUrl,
+    };
+  }
+
+  function cellArtifactItems(md) {
+    const re = new RegExp(LB_CELL_RE.source, "g");
+    const items = [];
+    let m;
+    while ((m = re.exec(md))) {
+      const meta = parseCellMeta(m[2]);
+      const body = m[3];
+      const order = meta.created_at || "";
+      if (meta.type === "artifact") {
+        const info = artifactInfoFromCell(meta, body);
+        if (info.name) items.push({ ...info, order });
+      }
+    }
+    return items;
+  }
+
+  function collectLogbookResources(markdownList) {
+    const re = new RegExp(LB_CELL_RE.source, "g");
+    const dashboards = new Map();
+    markdownList.forEach((md) => {
+      let m;
+      while ((m = re.exec(md))) {
+        const meta = parseCellMeta(m[2]);
+        const body = m[3];
+        if (meta.type !== "dashboard") continue;
+        const project = meta.dashboard_project || "";
+        const space = body.match(/https:\/\/huggingface\.co\/spaces\/[^\s<>)"'`]+/);
+        const local = !space;
+        const url = space ? space[0] : "";
+        const key = local ? `local:${project}` : `space:${spaceIdFromUrl(url)}`;
+        const resUrl = local ? `trackio-local-dashboard://${project}` : url;
+        if (!dashboards.has(key))
+          dashboards.set(key, { project, local, url, resUrl });
+      }
+    });
+    const artifacts = new Map();
+    markdownList.forEach((md) => {
+      cellArtifactItems(md).forEach((it) => {
+        const key = `${it.type}:${it.name}`;
+        const prev = artifacts.get(key);
+        if (!prev || it.order >= prev.order) artifacts.set(key, it);
+      });
+    });
+    return {
+      dashboards: Array.from(dashboards.values()).sort((a, b) =>
+        a.project.localeCompare(b.project)
+      ),
+      artifacts: Array.from(artifacts.values()).sort((a, b) =>
+        a.name.localeCompare(b.name)
+      ),
+    };
+  }
+
+  function closeStatPopovers() {
+    document
+      .querySelectorAll(".stat-popover")
+      .forEach((p) => (p.hidden = true));
+    document
+      .querySelectorAll(".stat-tile.open")
+      .forEach((t) => t.classList.remove("open"));
+  }
+
+  function ensureStatListeners() {
+    if (STATS_LISTENERS) return;
+    STATS_LISTENERS = true;
+    document.addEventListener("click", closeStatPopovers);
+    document.addEventListener("keydown", (e) => {
+      if (e.key === "Escape") closeStatPopovers();
+    });
+  }
+
+  function stateHtml(remote, url) {
+    return remote
+      ? `<a class="stat-row-state open" href="${esc(url)}" target="_blank" rel="noopener" title="Open in a new tab">Open ↗</a>`
+      : `<span class="stat-row-state">publish to share</span>`;
+  }
+
+  function scrollToResource(resUrl) {
+    closeStatPopovers();
+    if (!resUrl) return;
+    const el = document.querySelector(
+      `#page .page-body [data-res-url="${CSS.escape(resUrl)}"]:not(.stat-row)`
+    );
+    if (!el) return;
+    el.scrollIntoView({ behavior: "smooth", block: "center" });
+    el.classList.add("res-flash");
+    setTimeout(() => el.classList.remove("res-flash"), 1500);
+  }
+
+  function dashRowHtml(d) {
+    const inner =
+      `<span class="stat-row-ico">${DASHBOARD_ICON_IMG}</span>` +
+      `<div class="stat-row-main"><div class="stat-row-title">${esc(d.project)}</div>` +
+      `<div class="stat-row-meta">${stateHtml(!d.local, d.url)}</div></div>`;
+    return `<div class="stat-row" data-res-url="${esc(d.resUrl)}" title="Jump to it in the logbook">${inner}</div>`;
+  }
+
+  function artRowHtml(a) {
+    const remote = !a.local && !!a.url;
+    const parts = [a.type, a.size].filter(Boolean).map(esc);
+    const meta = parts.length
+      ? `${parts.join(" · ")} · ${stateHtml(remote, a.url)}`
+      : stateHtml(remote, a.url);
+    const inner =
+      `<span class="stat-row-ico">${ARTIFACT_ICON_IMG}</span>` +
+      `<div class="stat-row-main"><div class="stat-row-title">${esc(a.name)}</div>` +
+      `<div class="stat-row-meta">${meta}</div></div>`;
+    return `<div class="stat-row" data-res-url="${esc(a.resUrl)}" title="Jump to it in the logbook">${inner}</div>`;
+  }
+
+  function statTile(icon, alt, singular, plural, head, rowFn) {
+    const tile = document.createElement("button");
+    tile.type = "button";
+    tile.className = "stat-tile";
+    const render = (items) => {
+      const count = items.length;
+      const label = count === 1 ? singular : plural;
+      const caret = count > 0 ? `<span class="stat-caret">▾</span>` : "";
+      tile.innerHTML =
+        `<img class="stat-icon" src="${icon}" alt="${esc(alt)}" />` +
+        `<div class="stat-text"><div class="stat-num">${count}</div>` +
+        `<div class="stat-label">${esc(label)}</div></div>` +
+        caret;
+      tile.disabled = count === 0;
+      if (count > 0) {
+        const pop = document.createElement("div");
+        pop.className = "stat-popover";
+        pop.hidden = true;
+        pop.innerHTML =
+          `<div class="stat-pop-head">${esc(head)}</div>` +
+          items.map(rowFn).join("");
+        pop.addEventListener("click", (e) => {
+          if (e.target.closest("a.stat-row-state")) {
+            e.stopPropagation();
+            return;
+          }
+          e.stopPropagation();
+          const row = e.target.closest(".stat-row");
+          if (row) scrollToResource(row.dataset.resUrl);
+        });
+        tile.appendChild(pop);
+      }
+    };
+    tile.addEventListener("click", (e) => {
+      if (tile.disabled) return;
+      e.stopPropagation();
+      const pop = tile.querySelector(".stat-popover");
+      if (!pop) return;
+      const isOpen = !pop.hidden;
+      closeStatPopovers();
+      if (!isOpen) {
+        pop.hidden = false;
+        tile.classList.add("open");
+      }
+    });
+    return { tile, render };
+  }
+
+  function buildLogbookStats(markdownList) {
+    const token = ++STATS_TOKEN;
+    ensureStatListeners();
+    const { dashboards, artifacts } = collectLogbookResources(markdownList);
+
+    const el = document.createElement("div");
+    el.className = "logbook-stats";
+    const dash = statTile(
+      "./trackio-logo-light.png",
+      "Trackio",
+      "Trackio Dashboard",
+      "Trackio Dashboards",
+      "Dashboards created in this logbook",
+      dashRowHtml
+    );
+    const art = statTile(
+      "./bucket-icon.svg",
+      "Bucket",
+      "Artifact",
+      "Artifacts",
+      "Artifacts created in this logbook",
+      artRowHtml
+    );
+    dash.render(dashboards);
+    art.render(artifacts);
+    el.appendChild(dash.tile);
+    el.appendChild(art.tile);
+
+    const scanText = markdownList
+      .map((md) =>
+        md.replace(/(`{3,4}|~{3,4})(html|raw)[^\n]*\n[\s\S]*?\n\1/g, " ")
+      )
+      .join("\n");
+    const seen = new Set(
+      dashboards.map((d) =>
+        d.local ? `local:${d.project}` : `space:${spaceIdFromUrl(d.url)}`
+      )
+    );
+    const remoteSpaces = new Map();
+    extractUrls(scanText).forEach((url) => {
+      const item = classifyResource(url);
+      if (item && item.kind === "space" && !item.local) {
+        remoteSpaces.set(item.url, item);
+      }
+    });
+    remoteSpaces.forEach((s) => {
+      const key = `space:${s.id}`;
+      if (seen.has(key)) return;
+      getJSON(`https://huggingface.co/api/spaces/${s.id}`)
+        .then((d) => {
+          if (STATS_TOKEN !== token) return;
+          const tags = (d && d.tags) || [];
+          if (
+            !seen.has(key) &&
+            tags.some((t) => String(t).toLowerCase() === "trackio")
+          ) {
+            seen.add(key);
+            dashboards.push({
+              project: s.id,
+              local: false,
+              url: s.url,
+              resUrl: s.url,
+            });
+            dashboards.sort((a, b) => a.project.localeCompare(b.project));
+            dash.render(dashboards);
+          }
+        })
+        .catch(() => {});
+    });
+    return el;
+  }
+
+  function buildAgentHint() {
+    const onSpaces =
+      /\.hf\.space$/.test(location.hostname) ||
+      /(^|\.)huggingface\.co$/.test(location.hostname);
+    let source = "";
+    if (onSpaces && MANIFEST.space_id) {
+      source = ` ${MANIFEST.space_id}`;
+    } else if (/^https?:$/.test(location.protocol)) {
+      source = ` ${location.origin}/`;
+    }
+    const command = `trackio logbook read${source}`;
+    const tokens = MANIFEST.agent_view_tokens;
+    const div = document.createElement("div");
+    div.className = "agent-hint";
+    const label = document.createElement("span");
+    label.className = "agent-hint-label";
+    label.textContent = "Read from the CLI:";
+    const code = document.createElement("code");
+    code.textContent = command;
+    const copy = document.createElement("button");
+    copy.className = "copy";
+    copy.type = "button";
+    copy.title = "Copy";
+    copy.textContent = "⧉";
+    copy.addEventListener("click", () => copyText(command, copy, "⧉"));
+    const note = document.createElement("span");
+    note.className = "agent-hint-note";
+    note.textContent =
+      "compact view for agents" + (tokens ? ` · ~${fmt(tokens)} tokens` : "");
+    div.appendChild(label);
+    div.appendChild(code);
+    div.appendChild(copy);
+    div.appendChild(note);
+    return div;
+  }
+
+  function currentSlug() {
+    const slug = (location.hash || "").replace(/^#\//, "") || MANIFEST.root.slug;
+    return findNode(MANIFEST.root, slug) ? slug : MANIFEST.root.slug;
+  }
+
+  function scrollToHash(opts = {}) {
+    const slug = currentSlug();
+    if (!location.hash) {
+      window.scrollTo({ top: 0, behavior: opts.behavior || "auto" });
+      highlight(slug);
+      return;
+    }
+    const section = document.getElementById("/" + slug);
+    if (section) section.scrollIntoView({ behavior: opts.behavior || "smooth" });
+    highlight(slug);
+  }
+
+  function navigateToLogbookSlug(target) {
+    const slug = String(target || "").replace(/^#?\//, "").trim();
+    if (!slug || !findNode(MANIFEST.root, slug)) return;
+    const hash = "#/" + slug;
+    if (location.hash === hash) {
+      scrollToHash({ behavior: "smooth" });
+    } else {
+      location.hash = hash;
+    }
+  }
+
+  function setupFigureNavigation() {
+    window.addEventListener("message", (event) => {
+      const data = event.data;
+      if (!data || data.type !== "trackio-logbook:navigate") return;
+      // Only accept messages from one of this logbook's sandboxed figure
+      // iframes, rather than from an arbitrary same-origin page.
+      const isFigureFrame = Array.from(
+        document.querySelectorAll("iframe.figure-frame")
+      ).some((frame) => frame.contentWindow === event.source);
+      if (!isFigureFrame) return;
+      navigateToLogbookSlug(data.target);
+    });
+  }
+
+  let SCROLL_FRAME = 0;
+  function updateActiveSection() {
+    cancelAnimationFrame(SCROLL_FRAME);
+    SCROLL_FRAME = requestAnimationFrame(() => {
+      const sections = Array.from(document.querySelectorAll(".page-section"));
+      if (!sections.length) return;
+      const marker = Math.min(window.innerHeight * 0.28, 180);
+      let active = sections[0];
+      sections.forEach((section) => {
+        if (section.getBoundingClientRect().top <= marker) active = section;
+      });
+      if (
+        window.innerHeight + window.scrollY >=
+        document.documentElement.scrollHeight - 2
+      ) {
+        active = sections[sections.length - 1];
+      }
+      highlight(active.dataset.slug);
+    });
+  }
+
+  function startLiveReload() {
+    if (!isLocalPreview()) return;
+    setInterval(async () => {
+      try {
+        const next = await fetchManifest();
+        if (!next || next.revision === MANIFEST.revision) return;
+        MANIFEST = next;
+        clearPageCache();
+        document.title = MANIFEST.title + " · Trackio Logbook";
+        document.getElementById("book-title").textContent = MANIFEST.title;
+        document.getElementById("book-head").setAttribute("aria-label", MANIFEST.title);
+        buildTree();
+        renderLogbook({ preserveScroll: true });
+      } catch (e) {}
+    }, LIVE_RELOAD_MS);
+  }
+
+  function setupConnect() {
+    const space = MANIFEST.space_id;
+    if (!space) return;
+    const steps = [
+      { t: "Install Trackio, if you don't have it yet.", c: "uv tool install trackio" },
+      { t: "Add the Trackio skill for your agent, then reload it.", c: "trackio skills add" },
+      { t: "Connect to this logbook.", c: `trackio logbook open ${space}` },
+    ];
+    const ol = document.getElementById("connect-steps");
+    steps.forEach((s, i) => {
+      const li = document.createElement("li");
+      const title = document.createElement("div");
+      title.className = "step-title";
+      title.textContent = `${i + 1}. ${s.t}`;
+      const block = document.createElement("div");
+      block.className = "codeblock";
+      const code = document.createElement("code");
+      code.textContent = s.c;
+      const copy = document.createElement("button");
+      copy.className = "copy";
+      copy.type = "button";
+      copy.title = "Copy";
+      copy.textContent = "⧉";
+      copy.addEventListener("click", () => copyText(s.c, copy, "⧉"));
+      block.appendChild(code);
+      block.appendChild(copy);
+      li.appendChild(title);
+      li.appendChild(block);
+      ol.appendChild(li);
+    });
+
+    const agentPrompt =
+      `Read and help maintain this Trackio experiment logbook ("${MANIFEST.title}").\n\n` +
+      "1. If you don't have Trackio, install it:  uv tool install trackio\n" +
+      "2. Add the Trackio skill for your agent:   trackio skills add   (then reload)\n" +
+      `3. Connect to this logbook:                trackio logbook open ${space}\n\n` +
+      "Start with `trackio logbook read`; use `trackio logbook read page \"...\"` " +
+      "for a page-level view, then fetch relevant details with " +
+      "`trackio logbook read cell cell_<id>`. If I've given you " +
+      'write access to the Space, add findings with `trackio logbook cell markdown "..." ' +
+      '--page "..."` and they will sync back automatically.';
+
+    const foot = document.getElementById("sidebar-foot");
+    foot.hidden = false;
+    const modal = document.getElementById("modal");
+    const open = () => (modal.hidden = false);
+    const close = () => (modal.hidden = true);
+    document.getElementById("connect-btn").addEventListener("click", open);
+    document.getElementById("modal-close").addEventListener("click", close);
+    modal.querySelector(".modal-backdrop").addEventListener("click", close);
+    document.addEventListener("keydown", (e) => {
+      if (e.key === "Escape") close();
+    });
+    const agentBtn = document.getElementById("copy-agent");
+    agentBtn.addEventListener("click", () =>
+      copyText(agentPrompt, agentBtn, "Copy for agent")
+    );
+  }
+
+  function copyText(text, btn, restore) {
+    const done = () => {
+      const prev = btn.textContent;
+      btn.textContent = restore === "⧉" ? "✓" : "Copied!";
+      btn.classList.add("copied");
+      setTimeout(() => {
+        btn.textContent = restore;
+        btn.classList.remove("copied");
+      }, 1400);
+      void prev;
+    };
+    if (navigator.clipboard && navigator.clipboard.writeText) {
+      navigator.clipboard.writeText(text).then(done, done);
+    } else {
+      const ta = document.createElement("textarea");
+      ta.value = text;
+      document.body.appendChild(ta);
+      ta.select();
+      try {
+        document.execCommand("copy");
+      } catch (e) {}
+      document.body.removeChild(ta);
+      done();
+    }
+  }
+
+  async function init() {
+    MANIFEST = await fetchManifest();
+    document.title = MANIFEST.title + " · Trackio Logbook";
+    document.getElementById("book-title").textContent = MANIFEST.title;
+    document.getElementById("book-head").setAttribute("aria-label", MANIFEST.title);
+    document.getElementById("book-head").addEventListener("click", () => {
+      const target = "#/" + MANIFEST.root.slug;
+      if (location.hash === target) scrollToHash();
+      else location.hash = target;
+    });
+    buildTree();
+    setupConnect();
+    setupResourceHover();
+    setupFigureNavigation();
+    window.addEventListener("hashchange", () => scrollToHash());
+    window.addEventListener("scroll", updateActiveSection, { passive: true });
+    await renderLogbook();
+    startLiveReload();
+  }
+
+  init();
+})();