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** 期间轴：非 dynamic 项做固定列，dynamic 项按月份分组 */

  const buildColumnsForTableDateRange = useCallback(

    (dates: string[]) => {

      const totalDate = getMonthsInRange(dates);

      const staticItems = PROPOSAL_LIST.filter((item: any) => !item.dynamic);

      const dynamicItems = PROPOSAL_LIST.filter((item: any) => item.dynamic);

 

      const staticColumns = staticItems.map((item: any) => {

        const baseCol: any = {

          title: item.itemName,

          dataIndex: item.itemVar,

          key: item.itemVar,

          width: 120,

        };

        return withHasTotalRender(baseCol, item.itemName, expandedKeys, setExpandedKeys);

      });

 

      const monthGroups = totalDate.map((month) => ({

        title: <MonthHeaderLabel monthStr={month} />,

        key: `group-${month}`,

        align: 'center' as const,

        onHeaderCell: () => ({ style: currentMonthCellStyle(month) }),

        children: dynamicItems.map((item: any) => ({

          title: item.itemName,

          key: `${toMonthlyKey(month)}__${item.itemVar}`,

          dataIndex: [toMonthlyKey(month), item.itemVar],

          align: 'left' as const,

          width: 180,

          onHeaderCell: () => ({ style: currentMonthCellStyle(month) }),

          onCell: () => ({ style: currentMonthCellStyle(month) }),

        })),

      }));

 

      return [...staticColumns, ...monthGroups];

    },

    [expandedKeys],

  );

 

  const columnsForProject = useMemo(

    () => buildColumnsForTableProject(selectDate),

    [buildColumnsForTableProject, selectDate],

  );

 

  const columnsForDateRange = useMemo(

    () => buildColumnsForTableDateRange(selectDate),

    [buildColumnsForTableDateRange, selectDate],

  );