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/tenancy/templates/tenancy/admin/merchant-edit.html

@@ -3,6 +3,7 @@
 {% from 'shared/macros/alerts.html' import loading_state %}
 {% from 'shared/macros/inputs.html' import search_autocomplete, selected_item_display %}
 {% from 'shared/macros/headers.html' import edit_page_header %}
+{% from 'shared/macros/modals.html' import confirm_modal_dynamic %}
 
 {% block title %}Edit Merchant{% endblock %}
 
@@ -24,7 +25,7 @@
         </h3>
         <div class="flex flex-wrap items-center gap-3">
             <button
-                @click="toggleVerification()"
+                @click="showToggleVerificationModal = true"
                 :disabled="saving"
                 class="flex items-center px-4 py-2 text-sm font-medium leading-5 text-white transition-colors duration-150 rounded-lg focus:outline-none focus:shadow-outline-purple disabled:opacity-50"
                 :class="{ 'bg-orange-600 hover:bg-orange-700': merchant && merchant.is_verified, 'bg-green-600 hover:bg-green-700': merchant && !merchant.is_verified }">
@@ -33,7 +34,7 @@
             </button>
 
             <button
-                @click="toggleActive()"
+                @click="showToggleActiveModal = true"
                 :disabled="saving"
                 class="flex items-center px-4 py-2 text-sm font-medium leading-5 text-white transition-colors duration-150 rounded-lg focus:outline-none focus:shadow-outline-purple disabled:opacity-50"
                 :class="{ 'bg-red-600 hover:bg-red-700': merchant && merchant.is_active, 'bg-green-600 hover:bg-green-700': merchant && !merchant.is_active }">
@@ -290,7 +291,7 @@
 
             <!-- Delete Merchant Button -->
             <button
-                @click="deleteMerchant()"
+                @click="promptDeleteMerchant()"
                 :disabled="saving || (merchant?.store_count > 0)"
                 class="inline-flex items-center px-4 py-2 text-sm font-medium text-white transition-colors duration-150 bg-red-600 border border-transparent rounded-lg hover:bg-red-700 focus:outline-none focus:shadow-outline-red disabled:opacity-50"
                 :title="merchant?.store_count > 0 ? 'Cannot delete merchant with stores' : 'Delete this merchant'"
@@ -308,6 +309,50 @@
         </p>
     </div>
 
+    {{ confirm_modal_dynamic(
+        'toggleVerificationModal',
+        'Toggle Verification',
+        "merchant?.is_verified ? 'Are you sure you want to unverify this merchant?' : 'Are you sure you want to verify this merchant?'",
+        'toggleVerification()',
+        'showToggleVerificationModal',
+        'Confirm',
+        'Cancel',
+        'warning'
+    ) }}
+
+    {{ confirm_modal_dynamic(
+        'toggleActiveModal',
+        'Toggle Active Status',
+        "merchant?.is_active ? 'Are you sure you want to deactivate this merchant? This will affect all stores under this merchant.' : 'Are you sure you want to activate this merchant? This will affect all stores under this merchant.'",
+        'toggleActive()',
+        'showToggleActiveModal',
+        'Confirm',
+        'Cancel',
+        'warning'
+    ) }}
+
+    {{ confirm_modal_dynamic(
+        'deleteMerchantModal',
+        'Delete Merchant',
+        "'Are you sure you want to delete merchant \"' + (merchant?.name || '') + '\"? This action cannot be undone.'",
+        'confirmDeleteMerchantStep()',
+        'showDeleteMerchantModal',
+        'Continue',
+        'Cancel',
+        'danger'
+    ) }}
+
+    {{ confirm_modal_dynamic(
+        'deleteMerchantFinalModal',
+        'Final Confirmation',
+        "'FINAL CONFIRMATION: Delete \"' + (merchant?.name || '') + '\"? This will permanently delete the merchant and all its data.'",
+        'deleteMerchant()',
+        'showDeleteMerchantFinalModal',
+        'Delete Permanently',
+        'Cancel',
+        'danger'
+    ) }}
+
     {# noqa: FE-004 - Complex form modal with dynamic user search and transfer functionality #}
     <!-- Transfer Ownership Modal -->
     <div