Fix: Implement dynamic column detection to handle Excel structure changes (insertion of PM Classification). This fixes the Missing data error in Pricing Units and other views.

src/components/DataCompleteness.tsx

@@ -1,5 +1,6 @@
 import React, { useMemo, useState } from 'react';
-import { ExcelRow, COLUMNS } from '../types';
+import { ExcelRow } from '../types';
+import { useColumns } from '../contexts/ColumnsContext';
 import { ChevronDown, ChevronUp } from 'lucide-react';
 import { cn } from '../lib/utils';
 
@@ -9,6 +10,7 @@ interface DataCompletenessProps {
 }
 
 export function DataCompleteness({ data, headers }: DataCompletenessProps) {
+  const COLUMNS = useColumns();
   const [sortCol, setSortCol] = useState<number | 'score'>('score');
   const [sortDesc, setSortDesc] = useState(false);
   const [page, setPage] = useState(1);