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/intake.js

@@ -0,0 +1,96 @@
+'use strict';
+
+const slug = location.pathname.split('/').filter(Boolean)[0];
+
+const form = document.getElementById('form');
+const customer = document.getElementById('customer');
+const item = document.getElementById('item');
+const category = document.getElementById('category');
+const problem = document.getElementById('problem');
+const agree = document.getElementById('agree');
+const submitBtn = document.getElementById('submit');
+const savedBox = document.getElementById('saved');
+const errorBox = document.getElementById('error');
+const rules = document.getElementById('rules');
+
+let categories = [];
+let savedTimer = null;
+
+document.getElementById('dashboard-link').href = `/${slug}/dashboard`;
+
+async function init() {
+  const [config, event] = await Promise.all([
+    fetch('/api/config').then((r) => r.json()),
+    fetch(`/api/events/${slug}`).then((r) => r.json()),
+  ]);
+
+  document.title = `Sign in a repair — ${event.name}`;
+  document.getElementById('event-name').textContent = event.name;
+
+  categories = config.categories.map((c) => c.name);
+  const list = document.getElementById('categories');
+  for (const name of categories) {
+    const option = document.createElement('option');
+    option.value = name;
+    list.append(option);
+  }
+
+  document.getElementById('rules-text').textContent = config.houseRules;
+  customer.focus();
+}
+
+/* house rules popup */
+document.getElementById('rules-link').addEventListener('click', (e) => {
+  e.preventDefault();
+  rules.showModal();
+});
+document.getElementById('rules-ok').addEventListener('click', () => rules.close());
+
+/* submit */
+function showError(message) {
+  errorBox.textContent = message;
+  errorBox.hidden = false;
+  savedBox.hidden = true;
+}
+
+form.addEventListener('submit', async (e) => {
+  e.preventDefault();
+  errorBox.hidden = true;
+
+  const chosen = category.value.trim().toLowerCase();
+  if (!categories.includes(chosen)) {
+    showError(`Please pick a category from the list: ${categories.join(', ')}.`);
+    category.focus();
+    return;
+  }
+
+  submitBtn.disabled = true;
+  try {
+    const res = await fetch(`/api/events/${slug}/repairs`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        customer: customer.value,
+        item: item.value,
+        category: chosen,
+        problem: problem.value,
+        agreedRules: agree.checked,
+      }),
+    });
+    const data = await res.json();
+    if (!res.ok) throw new Error(data.error || 'Could not submit.');
+
+    // Clear everything and hand the tablet back, ready for the next person.
+    form.reset();
+    customer.focus();
+    savedBox.hidden = false;
+    clearTimeout(savedTimer);
+    savedTimer = setTimeout(() => { savedBox.hidden = true; }, 6000);
+  } catch (err) {
+    showError(err.message);
+  } finally {
+    submitBtn.disabled = false;
+  }
+});
+
+init().catch(() => showError('Could not load this event. Try reloading the page.'));