Add user profile & dashboard insights

Introduce a user profile page and expand dashboard insights/UI. Added UserController::show and a new users/show view with user stats, domains, tags and groups; updated users index to include a "view profile" link and changed edit form action to /users/{id}/update. Enhanced DashboardController to compute registrar distribution, notification coverage, channel totals and dashboard tag usage; updated dashboard/index.php to show system status, expiring list, registrar/tag widgets and notification coverage panels. Minor controller hardening: DomainController now returns a permission message when a domain is inaccessible, and TagController enforces isolation-mode access checks. UI/JS improvements: add a Quick Actions dropdown in top-nav, refactor dropdown toggle/close logic in layout/base.php, and small notification markup tweak. Routes were adjusted to expose the new user profile endpoints.

app/Views/users/edit.php

@@ -16,7 +16,7 @@ ob_start();
         </div>
 
         <div class="p-6">
-            <form method="POST" action="/users/update" class="space-y-5">
+            <form method="POST" action="/users/<?= $user['id'] ?>/update" class="space-y-5">
                 <?= csrf_field() ?>
                 <input type="hidden" name="id" value="<?= $user['id'] ?>">
 

app/Views/users/index.php

@@ -280,6 +280,9 @@ $pagination = $pagination ?? [
                         </td>
                         <td class="px-6 py-4 whitespace-nowrap text-right text-sm font-medium">
                             <div class="flex items-center justify-end space-x-2">
+                                <a href="/users/<?= $user['id'] ?>" class="text-gray-600 hover:text-primary" title="View Profile">
+                                    <i class="fas fa-eye"></i>
+                                </a>
                                 <a href="/users/<?= $user['id'] ?>/edit" class="text-blue-600 hover:text-blue-800" title="Edit">
                                     <i class="fas fa-edit"></i>
                                 </a>