iSchumi6210 reported that with the global "Require expiration date"
toggle ON, an admin couldn't clear the expiration on an existing event
via the Edit Event form. The PUT returned 400 "Expiration date is
required."
The cause was intentional in the original code: the global setting was
enforced on both create AND edit, so once flipped ON, no event could
ever be cleared of its expiration — not even by admins editing one-by-
one. Reproduced the exact scenario byte-for-byte against beta:
Toggle ON → POST /admin/events {expiration_days: 30} → 200 created
Toggle ON → PUT /admin/events/:id {expires_at: null} → 400 rejected
The setting now controls only the create-time default. On edit, an
admin can clear the field and the value persists as NULL ("never
expires"). Matches CMS-style admin tool conventions where field-
required-by-default doesn't lock the field after creation.
Backend: drop the `getEventFieldRequirements()` enforcement on the
expires_at branch in PUT /admin/events/:id. Empty/null on edit
normalizes to NULL.
Frontend: drop the matching `requireExpiration && !editForm.expires_at`
toast in EventDetailsPage. The variable is no longer referenced, so
remove its declaration too.
Verified end-to-end with toggle ON:
STEP 1: create with expiration → ok (unchanged)
STEP 2: create without expiration → backend auto-applies default 30d
(create-time enforcement intact)
STEP 3: PUT {expires_at: null} on existing → "Event updated
successfully" (was 400)
STEP 4: DB column expires_at is NULL
STEP 5: PUT {expires_at: ''} also accepted (matches what an HTML
date input sends when cleared)
Smoke 13/13 green; no regressions.