feat: KitchenStock light UI, Gemma 31B AI, supermarket store filters & 130+ vegan products

tests/unit/date.test.ts

@@ -0,0 +1,20 @@
+import { describe, it, expect } from 'vitest';
+import { formatDateGerman, getExpirationStatus } from '@/lib/formatting/date';
+
+describe('Date & Expiration Status Helpers', () => {
+  it('formats ISO dates into German TT.MM.JJJJ format', () => {
+    expect(formatDateGerman('2026-07-26')).toBe('26.07.2026');
+  });
+
+  it('returns OK for null expiration date', () => {
+    const status = getExpirationStatus(null);
+    expect(status.status).toBe('OK');
+    expect(status.label).toBe('Kein Ablaufdatum');
+  });
+
+  it('correctly flags expired dates', () => {
+    const status = getExpirationStatus('2020-01-01');
+    expect(status.status).toBe('EXPIRED');
+    expect(status.label).toContain('Abgelaufen');
+  });
+});