[IMP] stock_picking_batch_custom: add full-screen operator view for batch picking

Add a "Vista Operarios" button in the batch form header (visible when
in_progress) that opens a full-screen list of stock.move.line filtered
by the current batch. The view shows only the fields operators need
(category, product, partner, home_delivery, consumer_group, collected,
quantity) with larger rows and touch-friendly quantity input via CSS.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

stock_picking_batch_custom/models/stock_picking_batch.py

@@ -221,6 +221,28 @@ class StockPickingBatch(models.Model):
                         product_names,
                     )
 
+    def action_open_operator_view(self):
+        self.ensure_one()
+        return {
+            "type": "ir.actions.act_window",
+            "name": self.name,
+            "res_model": "stock.move.line",
+            "view_mode": "list",
+            "views": [
+                (
+                    self.env.ref(
+                        "stock_picking_batch_custom.view_move_line_batch_operator"
+                    ).id,
+                    "list",
+                )
+            ],
+            "domain": [("batch_id", "=", self.id)],
+            "context": {
+                "create": False,
+                "delete": False,
+            },
+        }
+
 
 class StockPickingBatchSummaryLine(models.Model):
     _name = "stock.picking.batch.summary.line"