BuyerDetails Country/Region/City/Wereda now resolve from the Ministry's own
EIMS_COUNTRY_REGION_VW master instead of the EIMS_BUYER_*_CODES env maps and
the ethiopia-geo-codes table. Both invented their codes and looked names up
globally, so KERSA/GORO/BABILE/BURE — each present in several zones with
different LOCALITY_NOs — could be filed against the wrong jurisdiction.
Resolution is hierarchical and refuses to guess: an unknown or ambiguous
address raises a local validation error naming the level that failed, and
never selects the first matching row. Spelling differences between EDR and
MoR live in a reviewed, parent-scoped alias layer; the dataset itself stays
verbatim so it remains traceable to the Ministry sheet.
Resolution now runs before the counter reservation in both the single and
bulk paths, so a bad company address no longer burns an EIMS sequence number.
Adds eims:import-locations to regenerate the dataset from a future workbook,
reporting duplicate rows and same-hierarchy code conflicts.
Empties had no way onto a departure: the return record could name a train
but nothing seated it on a wagon. Export schedules now expose a loading
action that packs selected returns onto free wagons at one 40ft or two 20ft
each, enforced both in the picker and in the API (existing empties on the
schedule count against their wagon).
Adds container_size, train_schedule_id and wagon_sequence_no to
freight.empty_container_returns.
