List YOUR own reward redemptions (newest first), scoped to your company.
Mirrors the /api/v1/users/:user_id/redemptions endpoint for the calling
user. Returns each redemption's state, catalog/reward details, and claim
and certificate URLs.

Pagination is cursor-based:

• limit (integer, optional) — page size, 1–100 (default 20).
• cursor (string, optional) — pass back the next_cursor from a prior
  response to fetch the next page. Keep limit identical across pages
  (the cursor carries the page size).

total_count is the full count of your redemptions; redemptions is one
page. When more pages exist, next_cursor is non-null.

Required OAuth scope: rewards:read