feat: add all remaining models (product map, order, shipment, customer, sync log, conflict, tax/pricelist map, returns)

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

fusion-woo-odoo/fusion_woocommerce/models/woo_shipment.py

@@ -0,0 +1,17 @@
+from odoo import fields, models
+
+
+class WooShipment(models.Model):
+    _name = 'woo.shipment'
+    _description = 'WooCommerce Shipment'
+
+    order_id = fields.Many2one('woo.order', required=True, ondelete='cascade')
+    picking_id = fields.Many2one('stock.picking')
+    carrier_id = fields.Many2one('woo.shipping.carrier')
+    tracking_number = fields.Char()
+    shipped_date = fields.Datetime()
+    is_backorder = fields.Boolean()
+    synced_to_woo = fields.Boolean()
+    company_id = fields.Many2one(
+        'res.company', required=True, default=lambda self: self.env.company,
+    )