[ADD] stock_picking_batch_custom: columnas opcionales partner y categoría

stock_picking_batch_custom/models/stock_move_line.py

@@ -0,0 +1,17 @@
+# Copyright 2026 Criptomart
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields
+from odoo import models
+
+
+class StockMoveLine(models.Model):
+    _inherit = "stock.move.line"
+
+    product_categ_id = fields.Many2one(
+        comodel_name="product.category",
+        string="Product Category",
+        related="product_id.categ_id",
+        store=True,
+        readonly=True,
+    )