feat(sync): add converters from Hiboutik DTOs to Prisma inputs

src/utils/date.spec.ts

@@ -0,0 +1,15 @@
+import { parseHiboutikDate } from './date';
+
+describe('parseHiboutikDate', () => {
+  it('parses a Hiboutik datetime', () => {
+    expect(parseHiboutikDate('2026-06-28 17:02:55')).toEqual(new Date('2026-06-28T17:02:55'));
+  });
+
+  it('parses a date without time', () => {
+    expect(parseHiboutikDate('1990-05-12')).toEqual(new Date('1990-05-12'));
+  });
+
+  it.each(['', '0000-00-00', '0000-00-00 00:00:00', 'not a date', null, undefined])('returns undefined for %p', (value) => {
+    expect(parseHiboutikDate(value)).toBeUndefined();
+  });
+});