claude-scriptorium 0.1.3

Render Claude Code sessions as self-contained HTML
Documentation 
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<!DOCTYPE html>
<!--
  Gist loader for claude-scriptorium folios.

  Vendored and lightly rebranded from GistHost by Simon Willison
  (https://github.com/gisthost/gisthost.github.io), itself a fork of gistpreview
  by Leon Huang. Retained under its MIT license:

    The MIT License (MIT)
    Copyright (c) 2025 Simon Willison
    Copyright (c) 2016-2025 gistpreview / Leon Huang

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"), to deal
    in the Software without restriction, including without limitation the rights
    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    copies of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included in all
    copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    SOFTWARE.

  The transcript itself never reaches this page's host: the browser fetches the
  gist straight from GitHub's API (and, for a folio over GitHub's ~1 MB API
  truncation limit, its raw URL) and writes it into the document here. Serving
  this loader from the project's own Pages site keeps the one moving part under
  the project's control rather than a third party's.
-->
<html lang="en">
<head>
  <title>claude-scriptorium folio viewer</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <style>
    * { box-sizing: border-box; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      font-size: 14px;
      line-height: 1.5;
      margin: 0;
      padding: 0;
      color: #333;
    }
    .container {
      width: 100%;
      max-width: 680px;
      margin: 0 auto;
      padding: 0 15px;
    }
    .text-center { text-align: center; }
    .hide { display: none; }
    .lead {
      font-size: 1.25em;
      color: #666;
    }
    h2 {
      font-size: 2em;
      font-weight: 500;
      margin: 20px 0;
    }
    .form-inline {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
    }
    .form-group {
      display: flex;
      align-items: center;
      gap: 5px;
    }
    label {
      font-weight: normal;
      margin: 0;
      white-space: nowrap;
    }
    input[type="text"] {
      padding: 5px 10px;
      font-size: 12px;
      border: 1px solid #ccc;
      border-radius: 3px;
      height: 30px;
    }
    input[type="text"]:focus {
      border-color: #66afe9;
      outline: none;
      box-shadow: 0 0 5px rgba(102, 175, 233, 0.6);
    }
    .btn {
      display: inline-block;
      padding: 6px 12px;
      font-size: 14px;
      font-weight: 400;
      text-align: center;
      cursor: pointer;
      border: 1px solid transparent;
      border-radius: 4px;
      background-color: #337ab7;
      color: #fff;
    }
    .btn:hover {
      background-color: #286090;
    }
    .alert {
      padding: 15px;
      margin-bottom: 20px;
      border: 1px solid transparent;
      border-radius: 4px;
      position: relative;
    }
    .alert-danger {
      color: #a94442;
      background-color: #f2dede;
      border-color: #ebccd1;
    }
    .close {
      position: absolute;
      top: 10px;
      right: 15px;
      font-size: 21px;
      font-weight: bold;
      color: inherit;
      opacity: 0.5;
      cursor: pointer;
      background: none;
      border: none;
      padding: 0;
    }
    .close:hover { opacity: 0.8; }
    ins { text-decoration: none; background-color: #fcf8e3; padding: 0 3px; }
  </style>
</head>
<body>
  <div id="loading" class="container text-center">
    <br>
    <p class="lead">Loading folio…</p>
  </div>

  <div id="main" class="container hide">
    <h2>claude-scriptorium folio viewer</h2>
    <p class="lead">Renders an HTML folio published as a GitHub gist. If <ins>File Name</ins> is empty, it previews <ins>index.html</ins> or <ins>the first file</ins>.</p>
    <div class="form-inline" role="form">
      <div class="form-group">
        <label for="gist_id">?</label>
        <input type="text" id="gist_id" placeholder="Gist ID">
      </div>
      <div class="form-group">
        <label for="file_name">/</label>
        <input type="text" id="file_name" placeholder="File Name (optional)">
      </div>
      <button id="submit" class="btn">Submit</button>
    </div>
    <br>
    <div id="alert-box"></div>
  </div>

  <script>
    (function () {
      // The GitHub API this viewer reads gists from. github.com by default; a
      // scaffolded GHES viewer rewrites this to https://<host>/api/v3.
      var API_BASE = 'https://api.github.com';

      function showMainPage() {
        document.getElementById('main').classList.remove('hide');
        document.getElementById('loading').classList.add('hide');
      }

      function showError(message) {
        var alertBox = document.getElementById('alert-box');
        var alert = document.createElement('div');
        alert.className = 'alert alert-danger';
        alert.innerHTML = '<button class="close" aria-label="close">&times;</button>' + message;
        alert.querySelector('.close').onclick = function() {
          alert.remove();
        };
        alertBox.appendChild(alert);
      }

      function submit() {
        var query = document.getElementById('gist_id').value;
        var fileName = document.getElementById('file_name').value;
        if (fileName) {
          query += '/' + fileName;
        }
        location.search = query;
      }

      document.getElementById('submit').onclick = submit;
      document.onkeypress = function (e) {
        if (e.keyCode === 13) submit();
      };

      // 1. check query string
      var query = location.search.substring(1);
      if (query.length === 0) {
        showMainPage();
        return;
      }

      // 2. get gist id and file name
      query = query.split('/');
      var gistId = query[0].split(/[=&]/)[0];
      var fileName = decodeURIComponent(query[1] || '');

      // 3. write data to inputs
      document.getElementById('gist_id').value = gistId;
      document.getElementById('file_name').value = fileName;

      // 4. fetch data
      fetch(API_BASE + '/gists/' + gistId)
        .then(function (res) {
          return res.json().then(function (body) {
            if (res.status === 200) {
              return body;
            }
            console.log(res, body);
            throw new Error('Gist <strong>' + gistId + '</strong>, ' + body.message.replace(/\(.*\)/, ''));
          });
        })
        .then(function (info) {
          if (fileName === '') {
            for (var file in info.files) {
              if (fileName === '' || file === 'index.html') {
                fileName = file;
              }
            }
          }

          if (info.files.hasOwnProperty(fileName) === false) {
            throw new Error('File <strong>' + fileName + '</strong> is not exist');
          }

          var fileInfo = info.files[fileName];

          // 5. fetch full content if truncated, otherwise use inline content
          if (fileInfo.truncated && fileInfo.raw_url) {
            return fetch(fileInfo.raw_url)
              .then(function (res) {
                if (!res.ok) {
                  throw new Error('Failed to fetch full content for <strong>' + fileName + '</strong>');
                }
                return res.text();
              });
          } else {
            return fileInfo.content;
          }
        })
        .then(function (content) {
          // 6. write data
          //
          // close() is load-bearing, not a formality: document.write from this
          // async callback implicitly reopens the document but leaves the parser
          // open, so the folio stays in readyState "loading" forever and its
          // DOMContentLoaded never fires, leaving the app script's search, copy,
          // theme, and dock wiring dead. close() ends the parse and fires it.
          document.write(content);
          document.close();
        })
        .catch(function (err) {
          showMainPage();
          showError(err.message);
        });
    })();
  </script>
</body>
</html>