List scheduled pins in this workspace, latest run_at first, with search and filters.
Use to find a schedule's id (search its title with q), see what is
queued for a period (status=scheduled, sort=run_at_asc), or list failed
schedules to retry. For one known schedule use get_schedule; for pins
that already published use list_pins.
Returns one page: {items, total, limit, offset, has_more}. items are
the schedules (id, pinterest_account_id, run_at, status, payload with
board_id, title and media, pin_id once it ran, last_error, created_at,
updated_at). total counts every match across all pages, so "how many
pins are scheduled for next week?" is one call with status=scheduled,
since/until and limit=1. To read further, repeat the call with the same
filters, q and sort and offset = offset + limit while has_more is true.
Fails with account_not_permitted for an account outside the key's
allow-list and validation_error for a bad status, sort or timestamp.