fix(ows_models): Update create() to use @api.model_create_multi for Odoo 18

Fixed DeprecationWarning by updating OwsMachine.create() method:
- Changed from @api.model with single vals parameter
- To @api.model_create_multi with vals_list parameter
- Now supports batch creation of multiple records
- Removed duplicate empty OwsMachineArea class definition

This resolves the Odoo 18 deprecation warning about create method not supporting batch operations.

open_workshop_base/models/ows_models.py

@@ -400,12 +400,6 @@ AVAILABLE_COLORS = [
     ('#ffffff', 'Weiss'),
 ]
 
-class OwsMachineArea(models.Model):
-    _name = 'ows.machine.area'
-    _table = 'ows_machine_area'
-    _description = 'OWS: Maschinenbereich'
-
-
 class MaintenanceEquipment(models.Model):
     """Erweitere maintenance.equipment mit OWS-Feldern für direkte Bearbeitung"""
     _inherit = 'maintenance.equipment'
@@ -559,24 +553,25 @@ class OwsMachine(models.Model):
 
     # Keine eigenen SQL Constraints - Equipment hat bereits unique constraint für serial_no    
 
-    @api.model
-    def create(self, vals):
+    @api.model_create_multi
+    def create(self, vals_list):
         """
         Beim Erstellen einer ows.machine:
         1. Equipment IMMER automatisch erstellen
         2. Area → Location synchronisieren
         3. serial_no und name vom User übernehmen
         """
-        # Equipment IMMER automatisch erstellen
-        equipment_vals = {
-            'name': vals.get('name', 'Neue Maschine'),
-            'serial_no': vals.get('serial_no', False),
-        }
+        # Equipment für alle Records erstellen
+        for vals in vals_list:
+            equipment_vals = {
+                'name': vals.get('name', 'Neue Maschine'),
+                'serial_no': vals.get('serial_no', False),
+            }
+            
+            equipment = self.env['maintenance.equipment'].create(equipment_vals)
+            vals['equipment_id'] = equipment.id
         
-        equipment = self.env['maintenance.equipment'].create(equipment_vals)
-        vals['equipment_id'] = equipment.id
-        
-        return super(OwsMachine, self).create(vals)
+        return super(OwsMachine, self).create(vals_list)
     
     def write(self, vals):
         """