fix: use Odoo public image URLs instead of broken WP media upload

WC consumer key cannot auth against /wp/v2/media (401). Instead, pass
Odoo's public image URL in the product/variation data and let WC
download it directly from {odoo_base}/web/image/product.product/{id}/image_1920.

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

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

@@ -246,30 +246,17 @@ class WooProductMap(models.Model):
             if wc_tax_class:
                 var_data['tax_class'] = wc_tax_class
 
-            # Variant image
+            # Variant image — pass Odoo's public URL, WC downloads it directly
             if variant.image_variant_1920:
-                # Upload image
-                try:
-                    import base64
-                    import requests as req
-                    img_bytes = base64.b64decode(variant.image_variant_1920)
-                    wp_url = inst.url.rstrip('/')
-                    filename = (variant.default_code or 'variant') + '.jpg'
-                    resp = req.post(
-                        f"{wp_url}/wp-json/wp/v2/media",
-                        auth=(inst.consumer_key, inst.consumer_secret),
-                        headers={
-                            'Content-Disposition': f'attachment; filename="{filename}"',
-                            'Content-Type': 'image/jpeg',
-                        },
-                        data=img_bytes,
-                        timeout=60,
-                    )
-                    if resp.status_code in (200, 201):
-                        media = resp.json()
-                        var_data['image'] = {'id': media['id']}
-                except Exception as img_err:
-                    _logger.warning("Variant image upload failed: %s", img_err)
+                odoo_base = inst.env['ir.config_parameter'].sudo().get_param('web.base.url', '')
+                filename = (variant.default_code or 'variant') + '.jpg'
+                if odoo_base:
+                    img_url = f"{odoo_base}/web/image/product.product/{variant.id}/image_1920"
+                    var_data['image'] = {
+                        'src': img_url,
+                        'name': filename,
+                        'alt': variant.display_name,
+                    }
 
             try:
                 wc_variation = client.create_product_variation(self.woo_product_id, var_data)