fix bug#7

apps/homepage/tests/unit/homepage-content.test.ts

@@ -5,6 +5,7 @@ import enShell from '@/content/locales/en/shell.json';
 import frHomepage from '@/content/locales/fr/homepage.json';
 import frShell from '@/content/locales/fr/shell.json';
 import { buildHomepageContent } from '@/content/homepage-model';
+import { accountCreateUrl } from '@/lib/account-urls';
 import { describe, expect, it } from 'vitest';
 
 describe('homepage content model', () => {
@@ -28,14 +29,19 @@ describe('homepage content model', () => {
   it('keeps unresolved conversion destinations disabled', () => {
     const content = buildHomepageContent(enHomepage, enShell);
 
-    expect(content.hero.primary.href).toBe('/dashboard/sign-up?lang=en');
+    expect(content.hero.primary.href).toBe('/dashboard/sign-up?lang=en&theme=dark');
     expect(content.hero.primary.disabledReason).toBeUndefined();
-    expect(content.final.primary.href).toBe('/dashboard/sign-up?lang=en');
+    expect(content.final.primary.href).toBe('/dashboard/sign-up?lang=en&theme=dark');
     expect(content.final.primary.disabledReason).toBeUndefined();
     expect(content.pricing.actionDisabledReason).toBe(enShell.states.pendingBody);
     expect(content.final.secondary.disabledReason).toBe(enShell.states.pendingBody);
   });
 
+  it('includes explicit theme handoff in account creation URLs', () => {
+    expect(accountCreateUrl('en', 'light')).toBe('/dashboard/sign-up?lang=en&theme=light');
+    expect(accountCreateUrl('en', 'dark')).toBe('/dashboard/sign-up?lang=en&theme=dark');
+  });
+
   it('keeps preview identifiers isolated from translated prose', () => {
     const content = buildHomepageContent(arHomepage, arShell);