The sheet attests EDR has taken custody. Export custody happens at
warehouse receipt, so the shared received-with-GRN gate now runs even
when wagons are already allocated. Receipt-row query also accepts the
legacy notes GRN fallback, matching the loading gate.
Top Returned Containers table ignored the EDR/Customer tab because
the backend never persisted which truck type performed the return.
Added returned_by column + DTO/entity field, wired create payload to
send it, and filtered the table by the active tab.
