fix: replace all native confirm() dialogs with styled modal macros

Migrated ~68 native browser confirm() calls across 74 files to use the
project's confirm_modal/confirm_modal_dynamic Jinja2 macros, providing
consistent styled confirmation dialogs instead of plain browser popups.

Modules updated: core, tenancy, cms, marketplace, messaging, billing,
customers, orders, cart. Uses danger/warning/info variants and
double-confirm pattern for destructive delete operations.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/modules/marketplace/static/admin/js/letzshop.js

@@ -48,6 +48,9 @@ function adminLetzshop() {
             pendingOrders: 0
         },
 
+        // Confirm modals
+        showDeleteStoreConfigModal: false,
+
         // Configuration modal
         showConfigModal: false,
         selectedStore: null,
@@ -191,10 +194,6 @@ function adminLetzshop() {
          * Delete store configuration
          */
         async deleteStoreConfig() {
-            if (!confirm(I18n.t('marketplace.confirmations.remove_letzshop_config_store'))) {
-                return;
-            }
-
             try {
                 await apiClient.delete(`/admin/letzshop/stores/${this.selectedStore.store_id}/credentials`);
                 this.showConfigModal = false;

app/modules/marketplace/static/admin/js/marketplace-letzshop.js

@@ -124,6 +124,15 @@ function adminMarketplaceLetzshop() {
         productStats: { total: 0, active: 0, inactive: 0, last_sync: null },
         showImportModal: false,
 
+        // Confirm modals
+        showDeclineOrderModal: false,
+        orderToDecline: null,
+        showConfirmAllItemsModal: false,
+        showDeclineAllItemsModal: false,
+        showDeleteCredentialsModal: false,
+        showIgnoreExceptionModal: false,
+        exceptionToIgnore: null,
+
         // Modals
         showTrackingModal: false,
         showOrderModal: false,
@@ -1010,8 +1019,6 @@ function adminMarketplaceLetzshop() {
         async declineOrder(order) {
             if (!this.selectedStore) return;
 
-            if (!confirm(I18n.t('marketplace.confirmations.decline_order'))) return;
-
             try {
                 await apiClient.post(`/admin/letzshop/stores/${this.selectedStore.id}/orders/${order.id}/reject`);
                 this.successMessage = 'Order declined';
@@ -1128,8 +1135,6 @@ function adminMarketplaceLetzshop() {
         async confirmAllItems(order) {
             if (!this.selectedStore) return;
 
-            if (!confirm(I18n.t('marketplace.confirmations.confirm_all_items'))) return;
-
             try {
                 await apiClient.post(
                     `/admin/letzshop/stores/${this.selectedStore.id}/orders/${order.id}/confirm`
@@ -1149,8 +1154,6 @@ function adminMarketplaceLetzshop() {
         async declineAllItems(order) {
             if (!this.selectedStore) return;
 
-            if (!confirm(I18n.t('marketplace.confirmations.decline_all_items'))) return;
-
             try {
                 await apiClient.post(
                     `/admin/letzshop/stores/${this.selectedStore.id}/orders/${order.id}/reject`
@@ -1241,10 +1244,6 @@ function adminMarketplaceLetzshop() {
         async deleteCredentials() {
             if (!this.selectedStore) return;
 
-            if (!confirm(I18n.t('marketplace.confirmations.remove_letzshop_config'))) {
-                return;
-            }
-
             try {
                 await apiClient.delete(`/admin/letzshop/stores/${this.selectedStore.id}/credentials`);
                 this.successMessage = 'Credentials removed';
@@ -1459,10 +1458,6 @@ function adminMarketplaceLetzshop() {
          * Ignore an exception
          */
         async ignoreException(exception) {
-            if (!confirm(I18n.t('marketplace.confirmations.ignore_exception'))) {
-                return;
-            }
-
             try {
                 await apiClient.post(`/admin/order-exceptions/${exception.id}/ignore`, {
                     notes: 'Ignored via admin interface'