fix(sentinel): refresh server nav after toggles

Dispatch server show refreshes after Sentinel and metrics toggles, preserve editable Sentinel form fields during restart events, and gate custom image editing by update permission.

tests/Feature/Livewire/SentinelComponentTest.php

@@ -0,0 +1,21 @@
+<?php
+
+it('keeps sentinel restarted events from re-syncing editable form fields', function () {
+    $componentSource = file_get_contents(app_path('Livewire/Server/Sentinel.php'));
+
+    preg_match('/public function handleSentinelRestarted\([^)]*\)\s*\{(?<body>.*?)\n    \}/s', $componentSource, $matches);
+
+    expect($matches['body'] ?? '')
+        ->toContain('$this->sentinelUpdatedAt = $this->server->sentinel_updated_at;')
+        ->not->toContain('$this->syncData();');
+});
+
+it('dispatches a server navbar refresh after toggling sentinel', function () {
+    $componentSource = file_get_contents(app_path('Livewire/Server/Sentinel.php'));
+
+    preg_match('/public function toggleSentinel\([^)]*\).*?\{(?<body>.*?)
+    \}/s', $componentSource, $matches);
+
+    expect($matches['body'] ?? '')
+        ->toContain("\$this->dispatch('refreshServerShow');");
+});