Adds two query helpers to inviteService:
- listInvites(filter): single-query LEFT JOIN against users to surface
createdByUsername, with status filtered in TS via the canonical
inviteStatus() derivation. Avoids N+1 the spec calls out (§3.1).
'archived' = expired | exhausted | revoked. Sort: createdAt DESC.
- listRedemptions(inviteId): LEFT JOIN against users via userId to
expose currentUsername alongside the registrantUsername snapshot.
Three null-handling branches per spec §3.1: live (username),
tombstoned ('Deleted User', isDeleted=true), and hard-deleted
(userId null, currentUsername null, isDeleted false).
Sort: redeemedAt DESC.
Also fixes a mistitled DB-miss test in getInviteByToken: the original
'returns null when token not found' used a 24-char string that fails
the format regex *before* the DB lookup. Split into two tests covering
both the format-reject path and the well-formed-but-missing path.
40 files / 302 tests passing.
Jannis Braun
ce5d4c10c8