feat: show the booking, parcel and order cards above the message body

src/components/email/MessageContent.tsx

@@ -6,6 +6,7 @@ import { useColors } from '../../theme/colors';
 import { useSettingsStore } from '../../stores/settings-store';
 import EmailBodyView from '../EmailBodyView';
 import { CalendarInvitationBanner } from './CalendarInvitationBanner';
+import { StructuredMailBanner } from './structured-mail/StructuredMailBanner';
 import { MessageHeader } from './MessageHeader';
 import { AttachmentChips } from './AttachmentChips';
 import { UnsubscribeBanner } from './UnsubscribeBanner';
@@ -114,6 +115,7 @@ export function MessageContent({
       )}
 
       <CalendarInvitationBanner email={email} jmapAccountId={jmapAccountId} />
+      <StructuredMailBanner email={email} jmapAccountId={jmapAccountId} />
 
       <View style={[styles.body, fill && styles.fill]}>
         {deferBody ? (

src/components/email/structured-mail/__tests__/structured-mail-mount.test.ts

@@ -0,0 +1,22 @@
+import { describe, expect, it } from 'vitest';
+import fs from 'node:fs';
+import path from 'node:path';
+
+// The booking, parcel and order cards only show if the reader renders the
+// banner. The webmail draws them above the body, after the invitation banner
+// (components/email/email-viewer.tsx:2695). The banner itself is tested in
+// structured-mail-banner.test.ts; this checks the reader mounts it.
+
+const messageContent = () =>
+  fs.readFileSync(path.resolve(__dirname, '..', '..', 'MessageContent.tsx'), 'utf8');
+
+describe('structured mail mount', () => {
+  it('renders the cards banner after the invitation banner, for the same account', () => {
+    const src = messageContent();
+    expect(src).toMatch(/import \{ StructuredMailBanner \} from '\.\/structured-mail\/StructuredMailBanner';/);
+    const invitation = src.indexOf('<CalendarInvitationBanner email={email} jmapAccountId={jmapAccountId} />');
+    const cards = src.indexOf('<StructuredMailBanner email={email} jmapAccountId={jmapAccountId} />');
+    expect(invitation).toBeGreaterThan(-1);
+    expect(cards).toBeGreaterThan(invitation);
+  });
+});