Changes dateformat.default from 'd M Y' to 'Y-m-d H:i' so dates
submitted via the post form are stored as '2026-06-19 10:30' rather
than '18 Jun 2026'. This ensures add-page-by-form generates slugs in
YYYY-MM-DD-HHmm-title order, preserving chronological sort.
All templates use explicit |date() filters so display is unaffected.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
m038
3a79fe2cc7