feature/improve date input ux

[codebude]

• Adaptive date input with additional validation
• Fix native date picker opening next to the field

This pr tackles #90 and #83

[github-actions]

🧪 Test Results — eb7a6fd

✅ Backend (pytest) — 998 passed, 0 failed, 0 skipped (998 total)
✅ CLI (pytest) — 54 passed, 0 failed, 0 skipped (54 total)
✅ Frontend (vitest) — 449 passed, 0 failed, 0 skipped (449 total)
✅ E2E (Playwright) — 75 passed, 0 failed, 0 skipped (75 total)

Summary: ✅ All 1576 tests passed