Fix Chrome dialog auto-dismiss with Bootstrap modals

- Add modal-alerts.js library with Bootstrap modal replacements
- Replace all 15 confirm() calls with showConfirm/showDeleteConfirm
- Auto-override window.alert() for all alert() calls
- Fixes Chrome 132+ aggressively blocking native dialogs

weed/admin/view/app/object_store_users.templ

@@ -802,7 +802,7 @@ templ ObjectStoreUsers(data dash.ObjectStoreUsersData) {
 
         // Delete user function
         async function deleteUser(username) {
-            if (confirm(`Are you sure you want to delete user "${username}"? This action cannot be undone.`)) {
+            showDeleteConfirm(username, async function() {
                 try {
                     const response = await fetch(`/api/users/${username}`, {
                         method: 'DELETE'
@@ -819,6 +819,9 @@ templ ObjectStoreUsers(data dash.ObjectStoreUsersData) {
                     console.error('Error deleting user:', error);
                     showErrorMessage('Failed to delete user: ' + error.message);
                 }
+            }, 'Are you sure you want to delete this user? This action cannot be undone.');
+        }
+                }
             }
         }
 
@@ -1102,7 +1105,7 @@ templ ObjectStoreUsers(data dash.ObjectStoreUsersData) {
 
         // Delete access key
         async function deleteAccessKey(username, accessKey) {
-            if (confirm('Are you sure you want to delete this access key?')) {
+            showDeleteConfirm(accessKey, async function() {
                 try {
                     const response = await fetch(`/api/users/${username}/access-keys/${accessKey}`, {
                         method: 'DELETE'
@@ -1121,6 +1124,9 @@ templ ObjectStoreUsers(data dash.ObjectStoreUsersData) {
                     console.error('Error deleting access key:', error);
                     showErrorMessage('Failed to delete access key: ' + error.message);
                 }
+            }, 'Are you sure you want to delete this access key?');
+        }
+                }
             }
         }