org-invites used org_invite_links: 8 lowercase hex characters, no link or
QR, hard deletes, roles the org model does not have, and nothing ever
redeemed one. It is rebuilt on redeem_codes, and a new global module,
/redeem-codes, does the same for platform promo codes. Both share
core/RedeemService.php and modules/org-invites/CodesBase.php:

- per-org (or platform) list with uses/max, reserved, link opens, previews
  and status (active, scheduled, expired, full, revoked), status and
  campaign filters;
- create through redeem_create with every grant type: org membership with
  a role, tournament entry (fee waiver), group join, coins and gems (from
  the org treasury or, for platform staff, minted), frame, shop item and
  badge; generated, numeric or vanity; window, max uses, approval,
  eligibility and welcome messages. The database's hard limits (staff
  codes, value codes, vanity codes) come back as Arabic messages; an
  org-scoped account creates as its org's owner;
- bulk: N single-use generated or numeric codes for a campaign through
  redeem_create_batch, and CSV export of a campaign's live codes for
  printed cards;
- usage page: link, QR, the funnel (redeem_code_funnel), every redemption
  with its source and new-signup flag, and reverse through redeem_reverse;
- soft revoke with a reason, logged in org_activity_log as invite.revoke;
- printable A4 poster (org, scan and join, QR at error level Q, the code,
  expiry);
- /redeem-codes/campaigns: every campaign across orgs and the platform
  with its funnel (redeem_campaign_stats).

Links are https://el3ab-player.caprover.al-arcade.com/r/<code>.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>