feat(email): localize waitlist confirmation email to English

src/lib/email.ts

@@ -10,17 +10,17 @@ const RESEND_ENDPOINT = 'https://api.resend.com/emails';
 
 export function buildConfirmationBody(region: WaitlistRegion): string {
   const regionLabel =
-    region === 'EU' ? 'Europa' : region === 'USA' ? 'Estados Unidos' : 'Latinoamérica';
+    region === 'EU' ? 'Europe' : region === 'USA' ? 'United States' : 'Latin America';
 
   return [
-    'Hola,',
+    'Hi,',
     '',
-    '¡Gracias por apuntarte a la lista de espera de NaN Community!',
+    'Thank you for joining the NaN Community waitlist!',
     '',
-    `Tu solicitud para la región ${regionLabel} ha sido registrada correctamente.`,
-    'Te avisaremos por email en cuanto haya una plaza disponible para ti.',
+    `Your request for the ${regionLabel} region has been registered successfully.`,
+    'We will email you as soon as a spot opens up for you.',
     '',
-    'Si tienes cualquier duda, responde directo a este correo.',
+    'If you have any questions, just reply to this email.',
     '',
     '— Cristian',
     'nan.builders',
@@ -45,7 +45,7 @@ export async function sendConfirmationEmail(
   params: SendEmailParams,
 ): Promise<SendEmailOutcome> {
   const { to, region, apiKey, from } = params;
-  const subject = 'NaN Community — Estás en la lista de espera';
+  const subject = 'NaN Community — You are on the waitlist';
   const text = buildConfirmationBody(region);
 
   try {

src/tests/api/waitlist.test.ts

@@ -255,7 +255,7 @@ describe('POST /api/waitlist', () => {
     expect(resendCall).toBeDefined();
     const body = JSON.parse(resendCall![1].body);
     expect(body.to).toBe('new@acme.co');
-    expect(body.subject).toContain('lista de espera');
+    expect(body.subject).toContain('waitlist');
   });
 
   it('does not send confirmation email for honeypot submissions', async () => {

src/tests/lib/email.test.ts

@@ -5,25 +5,25 @@ import {
 } from '../../lib/email';
 
 describe('buildConfirmationBody', () => {
-  it('mentions Europa for EU region', () => {
+  it('mentions Europe for EU region', () => {
     const body = buildConfirmationBody('EU');
-    expect(body).toContain('Europa');
-    expect(body).not.toContain('Latinoamérica');
+    expect(body).toContain('Europe');
+    expect(body).not.toContain('Latin America');
   });
 
-  it('mentions Latinoamérica for LATAM region', () => {
+  it('mentions Latin America for LATAM region', () => {
     const body = buildConfirmationBody('LATAM');
-    expect(body).toContain('Latinoamérica');
+    expect(body).toContain('Latin America');
   });
 
-  it('mentions Estados Unidos for USA region', () => {
+  it('mentions United States for USA region', () => {
     const body = buildConfirmationBody('USA');
-    expect(body).toContain('Estados Unidos');
+    expect(body).toContain('United States');
   });
 
-  it('is written in Spanish', () => {
+  it('is written in English', () => {
     const body = buildConfirmationBody('EU');
-    expect(body).toContain('lista de espera');
+    expect(body).toContain('waitlist');
     expect(body).toContain('Cristian');
     expect(body).toContain('nan.builders');
   });
@@ -65,8 +65,8 @@ describe('sendConfirmationEmail', () => {
     const body = JSON.parse(options.body);
     expect(body.to).toBe('alice@acme.co');
     expect(body.from).toBe('Cristian · NaN <cristian@nan.builders>');
-    expect(body.subject).toContain('lista de espera');
-    expect(body.text).toContain('Europa');
+    expect(body.subject).toContain('waitlist');
+    expect(body.text).toContain('Europe');
   });
 
   it('returns error on non-2xx response', async () => {