update signup page

apps/api/src/tests/api/auth-boundaries.api.test.ts

@@ -128,6 +128,9 @@ describe('auth API boundaries', () => {
 
   it('POST /auth/account/start validates minimal signup and returns 201', async () => {
     const res = await request(app).post('/api/v1/auth/account/start').send({
+      firstName: 'Aya',
+      lastName: 'Benali',
+      companyName: 'Atlas Cars',
       email: 'owner@example.com',
       password: 'super-secret',
       preferredLanguage: 'fr',
@@ -141,6 +144,9 @@ describe('auth API boundaries', () => {
       },
     })
     expect(accountService.startAccount).toHaveBeenCalledWith({
+      firstName: 'Aya',
+      lastName: 'Benali',
+      companyName: 'Atlas Cars',
       email: 'owner@example.com',
       password: 'super-secret',
       preferredLanguage: 'fr',
@@ -149,6 +155,9 @@ describe('auth API boundaries', () => {
 
   it('POST /auth/account/start rejects malformed minimal signup payloads before service execution', async () => {
     const res = await request(app).post('/api/v1/auth/account/start').send({
+      firstName: 'Aya',
+      lastName: 'Benali',
+      companyName: 'A',
       email: 'not-email',
       password: 'short',
     })