Justin Edmund 5968ed74d5 add joined_at to memberships and phantoms for historical data ... - editable field separate from created_at - active_during scope uses joined_at for filtering - backfills from created_at in migration		2025-12-04 03:02:13 -08:00
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v1	add joined_at to memberships and phantoms for historical data	2025-12-04 03:02:13 -08:00