fix: resolve selected winners from populated CMS data

tests/int/cms-route-relationship.int.spec.ts

@@ -0,0 +1,25 @@
+import { describe, expect, it } from 'vitest'
+
+import { resolveCmsRelationship, type CmsRouteDoc } from '@/spa/cmsRoute'
+
+const fullWinner: CmsRouteDoc = {
+  id: 20,
+  title: 'Adelholzener Alpenquellen GmbH',
+  image: { id: 55, url: '/api/media/file/image%20(1).png' },
+}
+
+describe('CMS relationship resolution', () => {
+  it('prefers the fully populated collection document over a shallow relationship object', () => {
+    expect(resolveCmsRelationship({ id: 20, image: 55 }, [fullWinner])).toBe(fullWinner)
+  })
+
+  it('resolves an ID-only relationship', () => {
+    expect(resolveCmsRelationship(20, [fullWinner])).toBe(fullWinner)
+  })
+
+  it('preserves a populated relationship when no list document is available', () => {
+    const relationship = { id: 20, image: { id: 55, url: '/api/media/file/image%20(1).png' } }
+
+    expect(resolveCmsRelationship(relationship, [])).toBe(relationship)
+  })
+})