The verifikat list RPC ordered entry_date in the requested direction but
always tiebroke voucher_series/voucher_number ascending, so under the
default date-descending view every multi-voucher day read the wrong way
(A10, A11, A12 inside a descending list). The RPC now flips the
tiebreaker with p_sort_date, and the route's direct-query fallback gains
the matching voucher_series tiebreak so both paths agree.
Fixes#972
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>