bc67a0ee88
Blueprint: renamed 'Date' to 'Start Date', added optional 'End Date' field (header.end_date) so it's editable in Admin. Template: single date → 'd M Y'; range → 'd M Y – d M Y' (full year on both sides — the old format silently dropped the start year). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Vgmzx8VTTTmCskSpQtsLTr