frontend/src/admin/Admin.tsx

@@ -29,6 +29,7 @@ import {
 } from '../api';
 import { useThemeMode } from '../theme/ThemeContext';
 import Customers from './Customers';
+import Emails from './Emails';
 import Settings from './Settings';
 import Categories from './Categories';
 import Tags from './Tags';
@@ -387,6 +388,7 @@ export default function Admin() {
             { key: 'categories', label: 'Categories', children: <Categories /> },
             { key: 'tags', label: 'Tags', children: <Tags /> },
             { key: 'customers', label: 'Customers', children: <Customers /> },
+            { key: 'emails', label: 'Emails', children: <Emails /> },
             { key: 'settings', label: 'Settings', children: <Settings /> }
           ]}
         />

frontend/src/admin/EmailTemplateEditor.tsx

@@ -34,7 +34,7 @@ export default function EmailTemplateEditor({ template, onChanged }: Props) {
   const { mode } = useThemeMode();
   // Falls back to the default so the editor starts from the real copy rather
   // than an empty box. `subject`/`body` being null means "never customised",
-  // which is why the badge on the tab can say so.
+  // which is what the rail's dot and the tag below are reading.
   const [subject, setSubject] = useState(template.subject ?? template.defaultSubject);
   const [body, setBody] = useState(template.body ?? template.defaultBody);
   const [saving, setSaving] = useState(false);
@@ -139,6 +139,8 @@ export default function EmailTemplateEditor({ template, onChanged }: Props) {
           />
         </div>
 
+        {/* The rail marks a customised template with a dot only. The state in
+            full sits here, beside the button that acts on it. */}
         <Space>
           <Button type="primary" loading={saving} onClick={handleSave}>
             Save
@@ -150,6 +152,7 @@ export default function EmailTemplateEditor({ template, onChanged }: Props) {
               Restore default
             </Button>
           )}
+          {customised ? <Tag color="blue">Customised</Tag> : <Tag>Default</Tag>}
         </Space>
       </Col>
 

frontend/src/admin/Emails.tsx

@@ -0,0 +1,73 @@
+import { useEffect, useState } from 'react';
+import Tabs from 'antd/es/tabs';
+import Spin from 'antd/es/spin';
+import Typography from 'antd/es/typography';
+import message from 'antd/es/message';
+import { EmailTemplate, fetchEmailTemplates } from './emailTemplatesApi';
+import EmailTemplateEditor from './EmailTemplateEditor';
+
+const { Text } = Typography;
+
+export default function Emails() {
+  const [templates, setTemplates] = useState<EmailTemplate[]>([]);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    fetchEmailTemplates()
+      .then(setTemplates)
+      // Reported rather than swallowed: an empty list would otherwise read as
+      // "there are no templates" instead of "they could not be loaded".
+      .catch(() => message.error('Could not load the email templates'))
+      .finally(() => setLoading(false));
+  }, []);
+
+  // Replaces the one that changed so the customised marker and the Restore
+  // button reflect what the server now holds, without refetching the rest.
+  function handleTemplateChanged(updated: EmailTemplate) {
+    setTemplates(current =>
+      current.map(t => (t.key === updated.key ? { ...t, subject: updated.subject, body: updated.body } : t))
+    );
+  }
+
+  return (
+    <div>
+      <Text type="secondary">
+        The wording customers receive. Leave one alone and it sends the built-in copy.
+      </Text>
+      {/* Spinner rather than an empty rail: with templates starting empty, the
+          gap before the fetch lands reads as "there are no emails to edit". */}
+      {loading ? (
+        <div style={{ padding: 48, textAlign: 'center' }}>
+          <Spin />
+        </div>
+      ) : (
+        /* A left rail rather than a strip across the top. Six labels wrapped on
+           narrower displays, and stacking them leaves the editor the full width
+           it needs for a markdown pane and a rendered preview side by side. */
+        <Tabs
+          tabPosition="left"
+          style={{ marginTop: 16 }}
+          items={templates.map(template => ({
+            key: template.key,
+            label: (
+              <>
+                {template.label}
+                {/* A dot, not a Tag — six tags down a rail stop it being
+                    scannable. aria-label keeps the word in the tab's
+                    accessible name, so the state is not colour-only. */}
+                {(template.subject !== null || template.body !== null) && (
+                  <span aria-label="Customised" title="Customised" style={{ marginLeft: 6 }}>
+                    •
+                  </span>
+                )}
+              </>
+            ),
+            children: (
+              <EmailTemplateEditor template={template} onChanged={handleTemplateChanged} />
+            )
+          }))}
+        />
+      )}
+    </div>
+  );
+}

frontend/src/admin/Settings.tsx

@@ -5,19 +5,13 @@ import Button from 'antd/es/button';
 import Typography from 'antd/es/typography';
 import message from 'antd/es/message';
 import Card from 'antd/es/card';
-import Tabs from 'antd/es/tabs';
-import Tag from 'antd/es/tag';
-import Space from 'antd/es/space';
 import { fetchAdminSettings, updateAdminSettings } from './adminSettingsApi';
-import { EmailTemplate, fetchEmailTemplates } from './emailTemplatesApi';
-import EmailTemplateEditor from './EmailTemplateEditor';
 
 const { Title, Text } = Typography;
 
 export default function Settings() {
   const [form] = Form.useForm();
   const [loading, setLoading] = useState(true);
-  const [templates, setTemplates] = useState<EmailTemplate[]>([]);
 
   useEffect(() => {
     fetchAdminSettings()
@@ -29,22 +23,6 @@ export default function Settings() {
       .finally(() => setLoading(false));
   }, [form]);
 
-  useEffect(() => {
-    fetchEmailTemplates()
-      .then(setTemplates)
-      // Reported rather than swallowed: an empty list would otherwise read as
-      // "there are no templates" instead of "they could not be loaded".
-      .catch(() => message.error('Could not load the email templates'));
-  }, []);
-
-  // Replaces the one that changed so the Customised badge and the Restore
-  // button reflect what the server now holds, without refetching the rest.
-  function handleTemplateChanged(updated: EmailTemplate) {
-    setTemplates(current =>
-      current.map(t => (t.key === updated.key ? { ...t, subject: updated.subject, body: updated.body } : t))
-    );
-  }
-
   async function handleSave() {
     const values = await form.validateFields();
     await updateAdminSettings(values);
@@ -52,7 +30,6 @@ export default function Settings() {
   }
 
   return (
-    <div style={{ maxWidth: 720 }}>
     <Card style={{ maxWidth: 480 }}>
       <Title level={4}>Cart Settings</Title>
       <Text type="secondary">
@@ -65,33 +42,5 @@ export default function Settings() {
         <Button type="primary" onClick={handleSave} loading={loading}>Save</Button>
       </Form>
     </Card>
-
-    <Title level={4} style={{ marginTop: 32 }}>Customer emails</Title>
-    <Text type="secondary">
-      The wording customers receive. Leave one alone and it sends the built-in copy.
-    </Text>
-    {/* Tabs rather than a stacked column. With six templates the cart reminder
-        sat below five editors, so which one you were editing was knowable only
-        from a card title you had already scrolled past. The Default/Customised
-        tag moves onto the tab label, so which templates have been changed is
-        visible without opening each one. */}
-    <Tabs
-      style={{ marginTop: 16 }}
-      items={templates.map(template => ({
-        key: template.key,
-        label: (
-          <Space size={4}>
-            {template.label}
-            {template.subject !== null || template.body !== null
-              ? <Tag color="blue">Customised</Tag>
-              : <Tag>Default</Tag>}
-          </Space>
-        ),
-        children: (
-          <EmailTemplateEditor template={template} onChanged={handleTemplateChanged} />
-        )
-      }))}
-    />
-    </div>
   );
 }

frontend/tests/e2e/email-templates.spec.ts

@@ -8,10 +8,12 @@ async function restore(page: import('@playwright/test').Page, key: string) {
   await page.request.delete(`/api/admin/email-templates/${key}`);
 }
 
-async function openSettings(page: import('@playwright/test').Page) {
+async function openEmails(page: import('@playwright/test').Page) {
   await page.goto('/admin');
-  await page.getByRole('tab', { name: 'Settings' }).click();
-  await expect(page.getByRole('heading', { name: 'Customer emails' })).toBeVisible();
+  await page.getByRole('tab', { name: 'Emails' }).click();
+  // The rail's first entry, rather than a heading — the tab label is the
+  // heading now, so there is no second one inside the page to wait on.
+  await expect(page.getByRole('tab', { name: /Email verification/ })).toBeVisible();
 }
 
 // Opens one template's tab. Only the active tab's editor is mounted, which is
@@ -36,7 +38,7 @@ test.describe('Editing the customer emails', () => {
   });
 
   test('offers every template as a tab, marked default until it is edited', async ({ page }) => {
-    await openSettings(page);
+    await openEmails(page);
 
     for (const label of [
       'Email verification',
@@ -49,14 +51,15 @@ test.describe('Editing the customer emails', () => {
       await expect(page.getByRole('tab', { name: new RegExp(label) })).toBeVisible();
     }
 
-    // The badge lives on the tab now, so which templates have been changed is
-    // visible without opening each one.
-    await expect(page.getByRole('tab', { name: /Password reset.*Default/ })).toBeVisible();
+    // Only a customised template is marked, so which ones have been changed is
+    // visible without opening each one. An untouched template carries nothing.
+    await expect(page.getByRole('tab', { name: /Password reset/ })).toBeVisible();
+    await expect(page.getByRole('tab', { name: /Password reset.*Customised/ })).toHaveCount(0);
   });
 
   test('saves a replacement subject and body', async ({ page }) => {
     const subject = `Reset ${suffix()}`;
-    await openSettings(page);
+    await openEmails(page);
     await openTemplate(page, 'Password reset');
 
     await page.getByLabel('Password reset subject').fill(subject);
@@ -77,7 +80,7 @@ test.describe('Editing the customer emails', () => {
   // looks fine in the log, so the save has to be refused rather than warned
   // about — and the admin has to be told which placeholder is missing.
   test('refuses a body that drops the required placeholder, and says which', async ({ page }) => {
-    await openSettings(page);
+    await openEmails(page);
     await openTemplate(page, 'Password reset');
 
     await page.getByLabel('Password reset body').fill('Just click the thing in your email.');
@@ -96,7 +99,10 @@ test.describe('Editing the customer emails', () => {
       data: { subject: 'Temporary', body: 'Temporary [link]({{resetUrl}}).' }
     });
 
-    await openSettings(page);
+    await openEmails(page);
+    // Marked in the rail before it is opened, which is the whole point of the
+    // dot — the stored template above was never touched through the UI.
+    await expect(page.getByRole('tab', { name: /Password reset.*Customised/ })).toBeVisible();
     await openTemplate(page, 'Password reset');
     await page.getByRole('button', { name: 'Restore default' }).click();
 
@@ -116,7 +122,7 @@ test.describe('Previewing the customer emails', () => {
 
   test('shows the draft being edited, not the stored copy', async ({ page }) => {
     const wording = `Wording ${suffix()}`;
-    await openSettings(page);
+    await openEmails(page);
     await openTemplate(page, 'Password reset');
 
     await page
@@ -132,7 +138,7 @@ test.describe('Previewing the customer emails', () => {
   });
 
   test('substitutes sample values rather than showing raw placeholders', async ({ page }) => {
-    await openSettings(page);
+    await openEmails(page);
     await openTemplate(page, 'Password reset');
 
     const frame = previewFrame(page, 'Password reset');
@@ -144,7 +150,7 @@ test.describe('Previewing the customer emails', () => {
   // markdown-it's html: false on the server. The preview has to show the same
   // thing the mailer emits, or it would be reassuring about the wrong output.
   test('escapes raw HTML exactly as the mailer does', async ({ page }) => {
-    await openSettings(page);
+    await openEmails(page);
     await openTemplate(page, 'Password reset');
 
     await page
@@ -157,7 +163,7 @@ test.describe('Previewing the customer emails', () => {
   // Appended by the server and not editable, so it has to appear in the preview
   // of the two templates it belongs to and nowhere else.
   test('includes the consent footer on a favorite template, and not on others', async ({ page }) => {
-    await openSettings(page);
+    await openEmails(page);
 
     await openTemplate(page, 'Favorited item sold');
     await expect(previewFrame(page, 'Favorited item sold').getByText(/account page/)).toBeVisible();