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/types.ts

@@ -9,6 +9,7 @@ export interface AppState {
   asinColumnIndex: number | null;
 }
 
+// Canonical column indices (defaults)
 export const COLUMNS = {
   ARTICLE_NO: 0,
   ARTICLE_NAME: 2,
@@ -16,28 +17,79 @@ export const COLUMNS = {
   LICENSE: 8,
   DETAILS_EN: 9,
   DETAILS_DE: 10,
-  BARCODE: 28,
-  TARIFF_CODE: 58,
-  COUNTRY_ORIGIN: 60,
-  LONG_DE: 62,
-  LONG_EN: 63,
-  SHORT_DE: 64,
-  SHORT_EN: 65,
-  RECOMMENDED_AGE: 67,
+  BARCODE: 29,
+  TARIFF_CODE: 60,
+  COUNTRY_ORIGIN: 62,
+  LONG_DE: 64,
+  LONG_EN: 65,
+  SHORT_DE: 66,
+  SHORT_EN: 67,
+  RECOMMENDED_AGE: 70,
   CLASSIFICATION: 11,
-  ITEM_AVAILABLE: 14,
-  MOQ: 27,
-  UNITS_INNER: 31,
-  UNITS_OUTER: 32,
-  ASIN: 33,
-  INNER_W: 42,
-  INNER_L: 43,
-  INNER_H: 44,
-  OUTER_W: 47,
-  OUTER_L: 48,
-  OUTER_H: 49,
+  ITEM_AVAILABLE: 16,
+  MOQ: 28,
+  UNITS_INNER: 32,
+  UNITS_OUTER: 33,
+  ASIN: 76,
+  INNER_W: 43,
+  INNER_L: 44,
+  INNER_H: 45,
+  OUTER_W: 48,
+  OUTER_L: 49,
+  OUTER_H: 50,
   VERIFIED_DIMS: 100,
   VALIDATED_CHECK: 101,
   VALIDATED_NOTE: 102,
   PRODUCT_TYPE: 103
-};
+};
+
+// Search patterns for dynamic detection
+export const COLUMN_PATTERNS: Record<keyof typeof COLUMNS, string[]> = {
+  ARTICLE_NO: ['article', 'no'],
+  ARTICLE_NAME: ['article', 'name'],
+  LINE: ['line'],
+  LICENSE: ['license'],
+  DETAILS_EN: ['details', 'english'],
+  DETAILS_DE: ['details', 'german'],
+  BARCODE: ['article', 'barcode'],
+  TARIFF_CODE: ['tariff', 'code'],
+  COUNTRY_ORIGIN: ['country', 'origin'],
+  LONG_DE: ['long', 'description', 'german'],
+  LONG_EN: ['long', 'description', 'english'],
+  SHORT_DE: ['short', 'description', 'german'],
+  SHORT_EN: ['short', 'description', 'english'],
+  RECOMMENDED_AGE: ['recommended', 'age'],
+  CLASSIFICATION: ['classification'],
+  ITEM_AVAILABLE: ['item', 'available'],
+  MOQ: ['moq'],
+  UNITS_INNER: ['units', 'inner'],
+  UNITS_OUTER: ['units', 'outer'],
+  ASIN: ['asin'],
+  INNER_W: ['inner', 'w'],
+  INNER_L: ['inner', 'l'],
+  INNER_H: ['inner', 'h'],
+  OUTER_W: ['outer', 'w'],
+  OUTER_L: ['outer', 'l'],
+  OUTER_H: ['outer', 'h'],
+  // Virtual/Extra columns stay hardcoded or managed elsewhere
+  VERIFIED_DIMS: ['verified'],
+  VALIDATED_CHECK: ['validated'],
+  VALIDATED_NOTE: ['note'],
+  PRODUCT_TYPE: ['product', 'type']
+};
+
+export function resolveColumnIndices(headers: string[]): typeof COLUMNS {
+  const resolved = { ...COLUMNS };
+  const h = headers.map(val => String(val || '').toLowerCase());
+
+  Object.entries(COLUMN_PATTERNS).forEach(([key, patterns]) => {
+    const idx = h.findIndex(headerText => 
+      patterns.every(p => headerText.includes(p.toLowerCase()))
+    );
+    if (idx >= 0) {
+      resolved[key as keyof typeof COLUMNS] = idx;
+    }
+  });
+
+  return resolved;
+}