Japanese travel-expense payment schedule (旅費支払予定表). Header has 部署 (department), 旅費支払日 (travel-expense payment date) and 作成年月日 (preparation date), all in Japanese era / Western year format as printed. The body is grouped by 社員番号 (employee number); each employee has one or more trip rows and a per-employee 合計 (subtotal). Promote every trip row into a single flat tripRows array, tagging each row with its employeeNumber so the grouping is preserved. Keep per-employee subtotals in employeeSubtotals. Each trip row has: 出発日時 (departure date/time), 帰着日時 (return date/time), 距離区分 (distance category), 目的区分 (purpose category), 出張先 (destination org), 区間 (route), 宿泊数 (nights), 支払額 (payment amount). The bottom 合計 is the grand total with headcount (人). Values stay in original Japanese script / numbers as printed; field names and descriptions in English.
