fix architecture and write new tests

apps/marketplace/src/components/MarketplaceHeader.boundary.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect, it } from 'vitest'
+import {
+  buildDashboardSignInHref,
+  companyInitial,
+  localeMenuPositionClass,
+  ownerWorkspaceHref,
+} from './MarketplaceHeader'
+
+describe('MarketplaceHeader helpers', () => {
+  it('builds dashboard sign-in links with language and theme query parameters', () => {
+    expect(buildDashboardSignInHref('https://app.example.com/dashboard', 'fr', 'dark')).toBe(
+      'https://app.example.com/dashboard/sign-in?lang=fr&theme=dark'
+    )
+    expect(buildDashboardSignInHref('/dashboard', 'ar', 'light')).toBe('/dashboard/sign-in?lang=ar&theme=light')
+  })
+
+  it('keeps the locale dropdown anchored to the readable side for RTL and LTR languages', () => {
+    expect(localeMenuPositionClass('ar')).toBe('right-0 sm:right-0')
+    expect(localeMenuPositionClass('en')).toBe('left-0 sm:left-auto sm:right-0')
+    expect(localeMenuPositionClass('fr')).toBe('left-0 sm:left-auto sm:right-0')
+  })
+
+  it('routes existing companies to their workspace and new owners to sign-up', () => {
+    expect(ownerWorkspaceHref('https://dashboard.example.com', 'Atlas Cars')).toBe('https://dashboard.example.com')
+    expect(ownerWorkspaceHref('https://dashboard.example.com', null)).toBe('https://dashboard.example.com/sign-up')
+  })
+
+  it('normalizes company initials for the owner workspace pill', () => {
+    expect(companyInitial('atlas cars')).toBe('A')
+    expect(companyInitial('  زاكورة كار  ')).toBe('ز')
+  })
+})