feat: add Refresh Prices button to pull WC prices for existing mappings

Existing mapped products had no WC price since they were fetched before
the woo_price field existed. action_refresh_prices fetches current prices
from WC API for all mapped products.

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

fusion-woo-odoo/fusion_woocommerce/static/src/js/product_mapping.js

@@ -426,6 +426,29 @@ export class ProductMapping extends Component {
         }
     }
 
+    async refreshPrices() {
+        if (!this.state.instanceId) {
+            this.notification.add("Please select an instance first.", { type: "warning" });
+            return;
+        }
+        try {
+            this.state.loading = true;
+            await rpc("/web/dataset/call_kw", {
+                model: "woo.instance",
+                method: "action_refresh_prices",
+                args: [[this.state.instanceId]],
+                kwargs: {},
+            });
+            this.notification.add("Prices refreshed from WooCommerce.", { type: "success" });
+            await this._refreshAll();
+        } catch (err) {
+            console.error("[ProductMapping] refreshPrices error:", err);
+            this.notification.add("Failed to refresh prices.", { type: "danger" });
+        } finally {
+            this.state.loading = false;
+        }
+    }
+
     async syncNow() {
         if (!this.state.instanceId) {
             this.notification.add("Please select an instance first.", { type: "warning" });

fusion-woo-odoo/fusion_woocommerce/static/src/xml/product_mapping.xml

@@ -44,6 +44,10 @@
                         t-att-disabled="state.loading">
                     <i class="fa fa-refresh me-1"/> Sync Now
                 </button>
+                <button class="woo-btn woo-btn-secondary" t-on-click="refreshPrices"
+                        t-att-disabled="state.loading">
+                    <i class="fa fa-dollar me-1"/> Refresh Prices
+                </button>
 
                 <!-- Spacer -->
                 <div class="flex-grow-1"/>