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.

routes/web.php

@@ -163,6 +163,7 @@ $router->get('/api/notifications/recent', [NotificationController::class, 'getRe
 $router->get('/users', [UserController::class, 'index']);
 $router->get('/users/create', [UserController::class, 'create']);
 $router->post('/users/store', [UserController::class, 'store']);
+$router->get('/users/{id}', [UserController::class, 'show']);
 $router->get('/users/{id}/edit', [UserController::class, 'edit']);
 $router->post('/users/{id}/update', [UserController::class, 'update']);
 $router->post('/users/{id}/delete', [UserController::class, 'delete']);