feat(delivery): add supplier article lookup, article creation, and unified parsing

- Unified PDF/TXT parsing to single POST /api/delivery/parse endpoint
- Added supplier article lookup with SKU/EAN matching in delivery lines
- Added "Artikel anlegen" button to create articles from missing SKUs
- Fixed delivery line taxrate field (was sending 'tax', now 'taxrate')
- Extended TXT file support for rescan functionality
- Updated ApiClient with getArticles method for supplier article lookup
- Added supplier article state management to deliveryEditorAutomat

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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

src/components/manifest/ManifestLines.jsx

@@ -24,6 +24,12 @@ class ManifestLines extends PureComponent {
       onRemoveLine,
       onSave,
       columns = LINE_COLUMNS,
+      supplierArticlesMap = {},
+      supplierArticlesByLineKey = {},
+      supplierArticlesLoading = false,
+      loadingLineKeys = {},
+      onSkuBlur,
+      onCreateArticle,
     } = this.props;
 
     return (
@@ -50,16 +56,31 @@ class ManifestLines extends PureComponent {
                 </TableRow>
               </TableHead>
               <TableBody>
-                {lines.map((line, index) => (
-                  <ManifestFormLine
-                    key={line.key ?? index}
-                    line={line.key != null ? line : { ...line, key: index }}
-                    columns={columns}
-                    saving={saving}
-                    onChange={onLineChange}
-                    onRemove={onRemoveLine}
-                  />
-                ))}
+                {lines.map((line, index) => {
+                  const lineKey = line.key ?? index;
+                  const rawSku = line.sku != null ? String(line.sku).trim() : '';
+                  const matched =
+                    supplierArticlesByLineKey[lineKey] ||
+                    (rawSku ? supplierArticlesMap[rawSku.toLowerCase()] || supplierArticlesMap[rawSku] : null);
+                  const isLineLoading =
+                    loadingLineKeys[lineKey] ||
+                    (supplierArticlesLoading && !matched);
+
+                  return (
+                    <ManifestFormLine
+                      key={lineKey}
+                      line={line.key != null ? line : { ...line, key: index }}
+                      columns={columns}
+                      saving={saving}
+                      supplierArticle={matched}
+                      loading={Boolean(isLineLoading)}
+                      onChange={onLineChange}
+                      onRemove={onRemoveLine}
+                      onSkuBlur={onSkuBlur}
+                      onCreateArticle={onCreateArticle}
+                    />
+                  );
+                })}
               </TableBody>
             </Table>
           </TableContainer>