Use the following date fields in each card file under src/cards/holidays/, src/cards/classes/, or src/cards/retreats/ so listing pages can display and sort cards correctly.
Put each card in the folder for the page where it should appear:
src/cards/holidays/ — Activity, holiday & courses (nav: Holidays)src/cards/classes/ — Classessrc/cards/retreats/ — Retreatssrc/cards/old/ — archived cards (not built; see old/README.md)Each card should start with a ## Overview section: a short summary shown on listing pages (retreats, classes, holidays). Keep it to a paragraph or two. The next heading of any level (###, ####, ## Team, etc.) ends the overview — everything after that appears only on the card detail page.
titleslugcategorylocationproviderformat: e.g. online, in-person, workshopavailability: year-round or scheduleddate_summary: human-readable text shown on the carddate_start: YYYY-MM-DD (for scheduled cards where a next start date is known)date_start are shown first and sorted by soonest date.date_start are shown after those, sorted by title.availability, date_summary, or date_start are missing, the page defaults to:
availability: year-rounddate_summary: Available year-roundavailability: year-round
date_summary: Available year-round
availability: scheduled
date_start: 2026-06-12
date_summary: 12 June 2026 to 17 June 2026