Initial commit: repair cafe kanban board

A per-event queue board for a repair cafe. Customers sign items in on a
shared tablet; volunteers drag repairs through Queue, In progress and Done
on a dashboard, then export the day's records as CSV.

Zero npm dependencies: node:http plus JSON files on disk, no build step.
Categories and house rules are set in config.json. Events are deleted
7 days after creation.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

public/new.html

@@ -0,0 +1,86 @@
+<!doctype html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>New event — Repair Cafe Kanban</title>
+<link rel="stylesheet" href="/static/app.css">
+</head>
+<body>
+<div class="wrap">
+  <h1>Create repair cafe kanban</h1>
+  <p class="subtitle">Set up a board for one event.</p>
+
+  <div id="error" class="notice error" hidden></div>
+
+  <form id="form" autocomplete="off">
+    <div class="field">
+      <label for="name">Name of event</label>
+      <input type="text" id="name" name="name" required maxlength="80" placeholder="Saturday Repair Day">
+    </div>
+
+    <div class="field">
+      <label class="check">
+        <input type="checkbox" id="randomize">
+        <span>Randomise the address<br>
+          <span class="hint">Adds a few random characters to the end so the address is hard to
+          guess or collide with. Useful if you run an event with the same name often.</span></span>
+      </label>
+    </div>
+
+    <div class="field">
+      <label>The board will live at</label>
+      <div class="url-preview" id="preview">&hellip;</div>
+    </div>
+
+    <button type="submit" class="primary big" id="create">Create</button>
+    <p style="margin-top:24px"><a href="/">Cancel</a></p>
+  </form>
+</div>
+
+<script>
+const nameInput = document.getElementById('name');
+const randomize = document.getElementById('randomize');
+const preview = document.getElementById('preview');
+const errorBox = document.getElementById('error');
+const createBtn = document.getElementById('create');
+
+// Must match slugify() in lib/store.js.
+function slugify(name) {
+  return name.toLowerCase().trim().replace(/[^a-z0-9]+/g, '-').replace(/^-+|-+$/g, '').slice(0, 60);
+}
+
+function updatePreview() {
+  const slug = slugify(nameInput.value);
+  const suffix = randomize.checked ? '-xxxx' : '';
+  preview.textContent = slug ? `${location.origin}/${slug}${suffix}` : '…';
+}
+
+nameInput.addEventListener('input', updatePreview);
+randomize.addEventListener('change', updatePreview);
+updatePreview();
+
+document.getElementById('form').addEventListener('submit', async (e) => {
+  e.preventDefault();
+  errorBox.hidden = true;
+  createBtn.disabled = true;
+  try {
+    const res = await fetch('/api/events', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ name: nameInput.value, randomize: randomize.checked }),
+    });
+    const data = await res.json();
+    if (!res.ok) throw new Error(data.error || 'Could not create the event.');
+    location.href = '/' + data.slug;
+  } catch (err) {
+    errorBox.textContent = err.message;
+    errorBox.hidden = false;
+    createBtn.disabled = false;
+  }
+});
+
+nameInput.focus();
+</script>
+</body>
+</html>