Revert "Remove lot document comments"

This reverts commit 3a3de9da22.

modules/erp/lager/api/lot.php

@@ -36,11 +36,13 @@ try {
             $pdo,
             (int) ($_POST['lotId'] ?? 0),
             $file,
+            (string) ($_POST['comment'] ?? ''),
             (string) ($currentUser['username'] ?? $currentUser['email'] ?? 'unknown')
         );
         json_response(201, ['ok' => true, 'document' => [
             'id' => (int) $document['id'],
             'original_filename' => (string) $document['original_filename'],
+            'comment' => $document['comment'] === null ? '' : (string) $document['comment'],
         ]]);
     }
 
@@ -101,6 +103,11 @@ try {
         json_response(200, ['ok' => true, 'productId' => $productId, 'availableQty' => get_lager_product_available_qty($pdo, $productId)]);
     }
 
+    if ($action === 'update_document_comment') {
+        update_stock_lot_document_comment($pdo, (int) ($data['documentId'] ?? 0), (string) ($data['comment'] ?? ''));
+        json_response(200, ['ok' => true]);
+    }
+
     if ($action === 'delete_document') {
         delete_stock_lot_document($pdo, (int) ($data['documentId'] ?? 0));
         json_response(200, ['ok' => true]);