fix(tenancy): add CRUD actions to merchant-users page, fix view URL and icon

- Fix View link to point to /admin/merchant-users/{id} instead of
  /admin/admin-users/{id}
- Add toggle status and delete action buttons to list page
- Add merchant-user detail page with route, template, and JS
- Replace non-existent "briefcase" icon with "office-building"

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

app/modules/tenancy/static/admin/js/merchant-users.js

@@ -223,6 +223,69 @@ function merchantUsersPage() {
                 merchantUsersLog.info('Go to page:', this.pagination.page);
                 this.loadMerchantUsers();
             }
+        },
+
+        // Toggle user active status
+        async toggleUserStatus(user) {
+            const action = user.is_active ? 'deactivate' : 'activate';
+            merchantUsersLog.info(`Toggle status: ${action} for user`, user.username);
+
+            if (!confirm(`Are you sure you want to ${action} "${user.full_name || user.username || user.email}"?`)) {
+                merchantUsersLog.info('Status toggle cancelled by user');
+                return;
+            }
+
+            try {
+                const url = `/admin/users/${user.id}/status`;
+                window.LogConfig.logApiCall('PUT', url, null, 'request');
+
+                const response = await apiClient.put(url);
+
+                window.LogConfig.logApiCall('PUT', url, response, 'response');
+
+                user.is_active = response.is_active;
+                Utils.showToast(`User ${action}d successfully`, 'success');
+                merchantUsersLog.info(`User ${action}d successfully`);
+
+                await this.loadStats();
+            } catch (error) {
+                window.LogConfig.logError(error, `Toggle Status (${action})`);
+                Utils.showToast(error.message || `Failed to ${action} user`, 'error');
+            }
+        },
+
+        // Delete user
+        async deleteUser(user) {
+            merchantUsersLog.warn('Delete user requested:', user.username);
+
+            if (!confirm(`Are you sure you want to delete "${user.full_name || user.username || user.email}"?\n\nThis action cannot be undone.`)) {
+                merchantUsersLog.info('Delete cancelled by user');
+                return;
+            }
+
+            // Second confirmation for safety
+            if (!confirm(`FINAL CONFIRMATION\n\nAre you absolutely sure you want to delete "${user.full_name || user.username || user.email}"?`)) {
+                merchantUsersLog.info('Delete cancelled by user (second confirmation)');
+                return;
+            }
+
+            try {
+                const url = `/admin/users/${user.id}`;
+                window.LogConfig.logApiCall('DELETE', url, null, 'request');
+
+                await apiClient.delete(url);
+
+                window.LogConfig.logApiCall('DELETE', url, null, 'response');
+
+                Utils.showToast('User deleted successfully', 'success');
+                merchantUsersLog.info('User deleted successfully');
+
+                await this.loadMerchantUsers();
+                await this.loadStats();
+            } catch (error) {
+                window.LogConfig.logError(error, 'Delete User');
+                Utils.showToast(error.message || 'Failed to delete user', 'error');
+            }
         }
     };
 }