feat(receiving): SO auto-create + MRP soft gate + menu structure

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

fusion-plating/fusion_plating_receiving/models/sale_order.py

@@ -2,4 +2,62 @@
 # Copyright 2026 Nexa Systems Inc.
 # License OPL-1 (Odoo Proprietary License v1.0)
 # Part of the Fusion Plating product family.
-# Placeholder — implemented in a later task.
+
+from odoo import api, fields, models
+
+
+class SaleOrder(models.Model):
+    _inherit = 'sale.order'
+
+    x_fc_receiving_ids = fields.One2many(
+        'fp.receiving', 'sale_order_id', string='Receiving Records',
+    )
+    x_fc_receiving_count = fields.Integer(
+        string='Receiving Count', compute='_compute_receiving_count',
+    )
+
+    @api.depends('x_fc_receiving_ids')
+    def _compute_receiving_count(self):
+        for rec in self:
+            rec.x_fc_receiving_count = len(rec.x_fc_receiving_ids)
+
+    def action_confirm(self):
+        """Override to auto-create receiving record on SO confirmation."""
+        res = super().action_confirm()
+        for order in self:
+            # Only create if no receiving record exists yet
+            if not order.x_fc_receiving_ids:
+                total_qty = sum(order.order_line.mapped('product_uom_qty'))
+                receiving_vals = {
+                    'sale_order_id': order.id,
+                    'expected_qty': int(total_qty),
+                    'line_ids': [],
+                }
+                # Auto-create lines from SO lines
+                for line in order.order_line:
+                    receiving_vals['line_ids'].append((0, 0, {
+                        'part_number': order.x_fc_part_catalog_id.part_number if order.x_fc_part_catalog_id else '',
+                        'description': line.name or '',
+                        'expected_qty': int(line.product_uom_qty),
+                    }))
+                self.env['fp.receiving'].create(receiving_vals)
+        return res
+
+    def action_view_receiving(self):
+        """Smart button action to view receiving records."""
+        self.ensure_one()
+        if self.x_fc_receiving_count == 1:
+            return {
+                'type': 'ir.actions.act_window',
+                'res_model': 'fp.receiving',
+                'res_id': self.x_fc_receiving_ids[0].id,
+                'view_mode': 'form',
+                'target': 'current',
+            }
+        return {
+            'type': 'ir.actions.act_window',
+            'res_model': 'fp.receiving',
+            'view_mode': 'list,form',
+            'domain': [('sale_order_id', '=', self.id)],
+            'target': 'current',
+        }