feat: harden auth flows and server mobile navigation

Add normalized email identity rate limiting for registration and forgot-password requests, and refresh Sentinel status from restart broadcasts.

Rework server sidebars and navbar for mobile menus and active status visibility.

tests/Feature/ServerNavbarStatusVisibilityTest.php

@@ -1,5 +1,6 @@
 <?php
 
+use App\Livewire\Server\Navbar;
 use App\Models\InstanceSettings;
 use App\Models\Server;
 use App\Models\Team;
@@ -52,3 +53,31 @@ it('shows sentinel sync status after the server is validated', function () {
         ->assertSee('Sentinel')
         ->assertSee('In sync');
 });
+
+it('listens for sentinel restarted broadcasts', function () {
+    [$server, , $team] = makeNavbarServer(isFunctional: true);
+
+    Livewire::test('server.navbar', ['server' => $server])
+        ->assertSet('server.uuid', $server->uuid);
+
+    expect(app(Navbar::class)->getListeners())
+        ->toHaveKey("echo-private:team.{$team->id},SentinelRestarted", 'refreshSentinelStatus');
+});
+
+it('refreshes sentinel status when sentinel restarts for the server', function () {
+    [$server] = makeNavbarServer(isFunctional: true);
+    $server->forceFill(['sentinel_updated_at' => now()->subDay()])->save();
+
+    expect($server->fresh()->isSentinelLive())->toBeFalse();
+
+    $component = Livewire::test('server.navbar', ['server' => $server->fresh()])
+        ->assertSee('Sentinel')
+        ->assertSee('Out of sync');
+
+    $server->sentinelHeartbeat();
+
+    $component
+        ->call('refreshSentinelStatus', ['serverUuid' => $server->uuid])
+        ->assertSee('In sync')
+        ->assertDontSee('Out of sync');
+});