first setup configuration

frontend/static/setup.js

@@ -0,0 +1,26 @@
+// Copyright © 2026 Olaf Kolkman
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+document.querySelector('#setup-form').addEventListener('submit', async (event) => {
+  event.preventDefault();
+  const form = event.currentTarget;
+  const status = document.querySelector('#setup-status');
+  const values = Object.fromEntries(new FormData(form));
+  values.smtp_port = Number(values.smtp_port);
+  values.smtp_use_tls = form.elements.smtp_use_tls.checked;
+  try {
+    const response = await fetch('/api/setup', {
+      method: 'POST',
+      headers: {'Content-Type': 'application/json'},
+      body: JSON.stringify(values),
+    });
+    const result = await response.json();
+    if (!response.ok) throw new Error(result.detail || 'Setup failed');
+    status.textContent = result.message;
+    status.style.color = '#94e2d5';
+    form.replaceChildren(status);
+  } catch (error) {
+    status.textContent = error.message;
+    status.style.color = '#f38ba8';
+  }
+});