Add pagination to Pricing tab

Load data in batches of 100 products per page with navigation controls

src/components/PricingView.tsx

@@ -51,6 +51,8 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit,
   const [filterMode, setFilterMode] = useState<FilterMode>('all_errors');
   const [search, setSearch] = useState('');
   const [searchMode, setSearchMode] = useState<'all' | 'selected'>('all');
+  const [currentPage, setCurrentPage] = useState(1);
+  const pageSize = 100;
   const [columnWidths, setColumnWidths] = useState<Record<string, number>>({
     articleNo: 100,
     articleName: 220,
@@ -387,6 +389,14 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit,
     return sorted;
   }, [filteredRows, sortConfig]);
 
+  // ── Pagination ─────────────────────────────────────────────────────────
+  const paginatedRows = useMemo(() => {
+    const start = (currentPage - 1) * pageSize;
+    return sortedRows.slice(start, start + pageSize);
+  }, [sortedRows, currentPage]);
+
+  const totalPages = Math.ceil(sortedRows.length / pageSize);
+
   const handleSort = (key: string | number) => {
     setSortConfig(prev => {
       if (prev.key === key) {
@@ -713,7 +723,7 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit,
           {FILTERS.map(f => (
             <button
               key={f.id}
-              onClick={() => setFilterMode(f.id)}
+              onClick={() => { setFilterMode(f.id); setCurrentPage(1); }}
               className={cn(
                 'flex items-center gap-2 px-3 py-1.5 rounded-md text-sm font-medium transition-colors',
                 filterMode === f.id
@@ -1056,7 +1066,7 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit,
               </tr>
             </thead>
             <tbody>
-              {sortedRows.map(({ row, dataIndex, pricingErrors, unitErrors, isCritical }) => {
+              {paginatedRows.map(({ row, dataIndex, pricingErrors, unitErrors, isCritical }) => {
                 const saveStatus = rowStatuses[String(row[COLUMNS.ARTICLE_NO])];
                 const isValidated = !!row[COLUMNS.VALIDATED_CHECK];
                 const note = String(row[COLUMNS.VALIDATED_NOTE] || '');
@@ -1274,13 +1284,50 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit,
         )}
       </div>
 
-      {/* ── Footer count ── */}
+      {/* ── Footer count & Pagination ── */}
+      <div className="flex items-center justify-between">
         <p className="text-xs text-slate-500 pb-1">
-        Showing {filteredRows.length} of {stats.total} products
+          Showing {paginatedRows.length} of {sortedRows.length} products {totalPages > 1 && `(${currentPage}/${totalPages})`}
           {pricingEditableCols.length > 0 && (
             <> · Click any <span className="text-blue-400">price cell</span> to edit inline</>
           )}
         </p>
+        {totalPages > 1 && (
+          <div className="flex items-center gap-1">
+            <button
+              onClick={() => setCurrentPage(1)}
+              disabled={currentPage === 1}
+              className="px-2 py-1 text-xs bg-slate-800 hover:bg-slate-700 rounded disabled:opacity-50 disabled:cursor-not-allowed"
+            >
+              ««
+            </button>
+            <button
+              onClick={() => setCurrentPage(p => Math.max(1, p - 1))}
+              disabled={currentPage === 1}
+              className="px-2 py-1 text-xs bg-slate-800 hover:bg-slate-700 rounded disabled:opacity-50 disabled:cursor-not-allowed"
+            >
+              «
+            </button>
+            <span className="text-xs text-slate-400 px-2">
+              {currentPage} / {totalPages}
+            </span>
+            <button
+              onClick={() => setCurrentPage(p => Math.min(totalPages, p + 1))}
+              disabled={currentPage === totalPages}
+              className="px-2 py-1 text-xs bg-slate-800 hover:bg-slate-700 rounded disabled:opacity-50 disabled:cursor-not-allowed"
+            >
+              »
+            </button>
+            <button
+              onClick={() => setCurrentPage(totalPages)}
+              disabled={currentPage === totalPages}
+              className="px-2 py-1 text-xs bg-slate-800 hover:bg-slate-700 rounded disabled:opacity-50 disabled:cursor-not-allowed"
+            >
+              »»
+            </button>
+          </div>
+        )}
+      </div>
     </div>
   );
 }