feat(server): auto-resolve Sentinel URL and polish setup UI

Ensure a Sentinel endpoint from instance FQDN/IP when enabling, use process dialogs for validation with install state, and tidy server create, boarding, metrics empty state, and log timestamps.

app/Actions/Server/StartSentinel.php

@@ -23,13 +23,10 @@ class StartSentinel
         $refreshRate = data_get($server, 'settings.sentinel_metrics_refresh_rate_seconds');
         $pushInterval = data_get($server, 'settings.sentinel_push_interval_seconds');
         $token = $server->settings->ensureValidSentinelToken();
-        $endpoint = data_get($server, 'settings.sentinel_custom_url');
+        $endpoint = $server->settings->ensureSentinelUrl();
         $debug = data_get($server, 'settings.is_sentinel_debug_enabled');
         $mountDir = '/data/coolify/sentinel';
         $image = coolifyRegistryUrl().'/coollabsio/sentinel:'.$version;
-        if (! $endpoint) {
-            throw new \RuntimeException('You should set FQDN in Instance Settings.');
-        }
         $environments = [
             'TOKEN' => $token,
             'DEBUG' => $debug ? 'true' : 'false',

app/Livewire/Server/Sentinel.php

@@ -114,9 +114,10 @@ class Sentinel extends Component
 
                     return;
                 }
-                $this->isSentinelEnabled = true;
                 $customImage = isDev() ? $this->sentinelCustomDockerImage : null;
                 StartSentinel::run($this->server, true, null, $customImage);
+                $this->sentinelCustomUrl = $this->server->settings->sentinel_custom_url;
+                $this->isSentinelEnabled = true;
             } else {
                 $this->isSentinelEnabled = false;
                 $this->isMetricsEnabled = false;

app/Livewire/Server/ValidateAndInstall.php

@@ -39,6 +39,8 @@ class ValidateAndInstall extends Component
 
     public bool $ask = false;
 
+    public bool $isInstalling = false;
+
     protected $listeners = [
         'init',
         'validateConnection',
@@ -51,6 +53,7 @@ class ValidateAndInstall extends Component
 
     public function init(int $data = 0)
     {
+        $this->isInstalling = false;
         $this->uptime = null;
         $this->supported_os_type = null;
         $this->prerequisites_installed = null;
@@ -172,6 +175,7 @@ class ValidateAndInstall extends Component
                     if ($this->number_of_tries <= $this->max_tries) {
                         $this->installationStep = 'Prerequisites';
                         $activity = $this->server->installPrerequisites();
+                        $this->isInstalling = true;
                         $this->number_of_tries++;
                         $this->dispatch('activityMonitor', $activity->id, 'init', $this->number_of_tries, "{$this->installationStep} Installation Logs");
                     }
@@ -208,6 +212,7 @@ class ValidateAndInstall extends Component
                     if ($this->number_of_tries <= $this->max_tries) {
                         $this->installationStep = 'Docker';
                         $activity = $this->server->installDocker();
+                        $this->isInstalling = true;
                         $this->number_of_tries++;
                         $this->dispatch('activityMonitor', $activity->id, 'init', $this->number_of_tries, "{$this->installationStep} Installation Logs");
                     }

app/Models/ServerSetting.php

@@ -219,7 +219,22 @@ class ServerSetting extends Model
         return $token;
     }
 
-    public function generateSentinelUrl(bool $save = true, bool $ignoreEvent = false)
+    public function ensureSentinelUrl(): string
+    {
+        $url = $this->sentinel_custom_url;
+
+        if (blank($url)) {
+            $url = $this->generateSentinelUrl(ignoreEvent: true);
+        }
+
+        if (blank($url)) {
+            throw new \RuntimeException('Set an instance FQDN or public IP before enabling Sentinel.');
+        }
+
+        return $url;
+    }
+
+    public function generateSentinelUrl(bool $save = true, bool $ignoreEvent = false): ?string
     {
         $domain = null;
         $settings = InstanceSettings::get();