refactor: apply rector

app/Console/Commands/FirmwareCheckCommand.php

@@ -23,7 +23,7 @@ class FirmwareCheckCommand extends Command
         );
 
         $latestFirmware = Firmware::getLatest();
-        if ($latestFirmware) {
+        if ($latestFirmware instanceof Firmware) {
             table(
                 rows: [
                     ['Latest Version', $latestFirmware->version_tag],

app/Console/Commands/FirmwareUpdateCommand.php

@@ -42,15 +42,14 @@ class FirmwareUpdateCommand extends Command
             label: 'Which devices should be updated?',
             options: [
                 'all' => 'ALL Devices',
-                ...Device::all()->mapWithKeys(function ($device) {
+                ...Device::all()->mapWithKeys(fn ($device): array =>
                     // without _ returns index
-                    return ["_$device->id" => "$device->name (Current version: $device->last_firmware_version)"];
-                })->toArray(),
+                    ["_$device->id" => "$device->name (Current version: $device->last_firmware_version)"])->toArray(),
             ],
             scroll: 10
         );
 
-        if (empty($devices)) {
+        if ($devices === []) {
             $this->error('No devices selected. Aborting.');
 
             return;
@@ -59,9 +58,7 @@ class FirmwareUpdateCommand extends Command
         if (in_array('all', $devices)) {
             $devices = Device::pluck('id')->toArray();
         } else {
-            $devices = array_map(function ($selected) {
-                return (int) str_replace('_', '', $selected);
-            }, $devices);
+            $devices = array_map(fn ($selected): int => (int) str_replace('_', '', $selected), $devices);
         }
 
         foreach ($devices as $deviceId) {

app/Console/Commands/MashupCreateCommand.php

@@ -28,17 +28,17 @@ class MashupCreateCommand extends Command
     /**
      * Execute the console command.
      */
-    public function handle()
+    public function handle(): int
     {
         // Select device
         $device = $this->selectDevice();
-        if (! $device) {
+        if (! $device instanceof Device) {
             return 1;
         }
 
         // Select playlist
         $playlist = $this->selectPlaylist($device);
-        if (! $playlist) {
+        if (! $playlist instanceof Playlist) {
             return 1;
         }
 
@@ -87,7 +87,7 @@ class MashupCreateCommand extends Command
 
         $deviceId = $this->choice(
             'Select a device',
-            $devices->mapWithKeys(fn ($device) => [$device->id => $device->name])->toArray()
+            $devices->mapWithKeys(fn ($device): array => [$device->id => $device->name])->toArray()
         );
 
         return $devices->firstWhere('id', $deviceId);
@@ -105,7 +105,7 @@ class MashupCreateCommand extends Command
 
         $playlistId = $this->choice(
             'Select a playlist',
-            $playlists->mapWithKeys(fn (Playlist $playlist) => [$playlist->id => $playlist->name])->toArray()
+            $playlists->mapWithKeys(fn (Playlist $playlist): array => [$playlist->id => $playlist->name])->toArray()
         );
 
         return $playlists->firstWhere('id', $playlistId);
@@ -123,13 +123,13 @@ class MashupCreateCommand extends Command
     {
         $name = $this->ask('Enter a name for this mashup', 'Mashup');
 
-        if (mb_strlen($name) < 2) {
+        if (mb_strlen((string) $name) < 2) {
             $this->error('The name must be at least 2 characters.');
 
             return null;
         }
 
-        if (mb_strlen($name) > 50) {
+        if (mb_strlen((string) $name) > 50) {
             $this->error('The name must not exceed 50 characters.');
 
             return null;
@@ -150,7 +150,7 @@ class MashupCreateCommand extends Command
         }
 
         $selectedPlugins = collect();
-        $availablePlugins = $plugins->mapWithKeys(fn ($plugin) => [$plugin->id => $plugin->name])->toArray();
+        $availablePlugins = $plugins->mapWithKeys(fn ($plugin): array => [$plugin->id => $plugin->name])->toArray();
 
         for ($i = 0; $i < $requiredCount; ++$i) {
             $position = match ($i) {

app/Console/Commands/OidcTestCommand.php

@@ -26,7 +26,7 @@ class OidcTestCommand extends Command
     /**
      * Execute the console command.
      */
-    public function handle()
+    public function handle(): int
     {
         $this->info('Testing OIDC Configuration...');
         $this->newLine();

app/Console/Commands/ScreenGeneratorCommand.php

@@ -25,7 +25,7 @@ class ScreenGeneratorCommand extends Command
     /**
      * Execute the console command.
      */
-    public function handle()
+    public function handle(): int
     {
         $deviceId = $this->argument('deviceId');
         $view = $this->argument('view');

app/Jobs/CleanupDeviceLogsJob.php

@@ -18,7 +18,7 @@ class CleanupDeviceLogsJob implements ShouldQueue
      */
     public function handle(): void
     {
-        Device::each(function ($device) {
+        Device::each(function ($device): void {
             $keepIds = $device->logs()->latest('device_timestamp')->take(50)->pluck('id');
 
             // Delete all other logs for this device

app/Jobs/FetchProxyCloudResponses.php

@@ -23,7 +23,7 @@ class FetchProxyCloudResponses implements ShouldQueue
      */
     public function handle(): void
     {
-        Device::where('proxy_cloud', true)->each(function ($device) {
+        Device::where('proxy_cloud', true)->each(function ($device): void {
             if (! $device->getNextPlaylistItem()) {
                 try {
                     $response = Http::withHeaders([

app/Jobs/FirmwareDownloadJob.php

@@ -18,12 +18,7 @@ class FirmwareDownloadJob implements ShouldQueue
 {
     use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
 
-    private Firmware $firmware;
-
-    public function __construct(Firmware $firmware)
-    {
-        $this->firmware = $firmware;
-    }
+    public function __construct(private Firmware $firmware) {}
 
     public function handle(): void
     {

app/Jobs/FirmwarePollJob.php

@@ -17,12 +17,7 @@ class FirmwarePollJob implements ShouldQueue
 {
     use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
 
-    private bool $download;
-
-    public function __construct(bool $download = false)
-    {
-        $this->download = $download;
-    }
+    public function __construct(private bool $download = false) {}
 
     public function handle(): void
     {

app/Jobs/NotifyDeviceBatteryLowJob.php

@@ -15,8 +15,6 @@ class NotifyDeviceBatteryLowJob implements ShouldQueue
 {
     use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;
 
-    public function __construct() {}
-
     public function handle(): void
     {
         $devices = Device::all();
@@ -32,9 +30,11 @@ class NotifyDeviceBatteryLowJob implements ShouldQueue
 
                 continue;
             }
-
             // Skip if battery is not low or notification was already sent
-            if ($batteryPercent > $batteryThreshold || $device->battery_notification_sent) {
+            if ($batteryPercent > $batteryThreshold) {
+                continue;
+            }
+            if ($device->battery_notification_sent) {
                 continue;
             }
 

app/Liquid/Filters/Data.php

@@ -72,7 +72,7 @@ class Data extends FiltersProvider
      */
     public function sample(array $array): mixed
     {
-        if (empty($array)) {
+        if ($array === []) {
             return null;
         }
 

app/Liquid/Filters/Numbers.php

@@ -40,15 +40,11 @@ class Numbers extends FiltersProvider
             $currency = 'GBP';
         }
 
-        if ($delimiter === '.' && $separator === ',') {
-            $locale = 'de';
-        } else {
-            $locale = 'en';
-        }
+        $locale = $delimiter === '.' && $separator === ',' ? 'de' : 'en';
 
         // 2 decimal places for floats, 0 for integers
         $decimal = is_float($value + 0) ? 2 : 0;
 
-        return Number::currency($value, in: $currency, precision: $decimal, locale: $locale);
+        return Number::currency($value, in: $currency, locale: $locale, precision: $decimal);
     }
 }

app/Liquid/Filters/Uniqueness.php

@@ -35,7 +35,7 @@ class Uniqueness extends FiltersProvider
         $randomString = '';
 
         for ($i = 0; $i < $length; ++$i) {
-            $randomString .= $characters[rand(0, mb_strlen($characters) - 1)];
+            $randomString .= $characters[random_int(0, mb_strlen($characters) - 1)];
         }
 
         return $randomString;

app/Livewire/Actions/DeviceAutoJoin.php

@@ -10,14 +10,14 @@ class DeviceAutoJoin extends Component
 
     public bool $isFirstUser = false;
 
-    public function mount()
+    public function mount(): void
     {
         $this->deviceAutojoin = auth()->user()->assign_new_devices;
         $this->isFirstUser = auth()->user()->id === 1;
 
     }
 
-    public function updating($name, $value)
+    public function updating($name, $value): void
     {
         $this->validate([
             'deviceAutojoin' => 'boolean',
@@ -30,7 +30,7 @@ class DeviceAutoJoin extends Component
         }
     }
 
-    public function render()
+    public function render(): \Illuminate\Contracts\View\View|\Illuminate\Contracts\View\Factory
     {
         return view('livewire.actions.device-auto-join');
     }

app/Livewire/Actions/Logout.php

@@ -10,7 +10,7 @@ class Logout
     /**
      * Log the current user out of the application.
      */
-    public function __invoke()
+    public function __invoke(): \Illuminate\Routing\Redirector|\Illuminate\Http\RedirectResponse
     {
         Auth::guard('web')->logout();
 

app/Livewire/DeviceDashboard.php

@@ -6,7 +6,7 @@ use Livewire\Component;
 
 class DeviceDashboard extends Component
 {
-    public function render()
+    public function render(): \Illuminate\Contracts\View\View|\Illuminate\Contracts\View\Factory
     {
         return view('livewire.device-dashboard', ['devices' => auth()->user()->devices()->paginate(10)]);
     }

app/Models/Device.php

@@ -35,7 +35,7 @@ class Device extends Model
         'pause_until' => 'datetime',
     ];
 
-    public function getBatteryPercentAttribute()
+    public function getBatteryPercentAttribute(): int|float
     {
         $volts = $this->last_battery_voltage;
 
@@ -83,7 +83,7 @@ class Device extends Model
         return round($voltage, 2);
     }
 
-    public function getWifiStrengthAttribute()
+    public function getWifiStrengthAttribute(): int
     {
         $rssi = $this->last_rssi_level;
         if ($rssi >= 0) {
@@ -106,11 +106,7 @@ class Device extends Model
             return true;
         }
 
-        if ($this->proxy_cloud_response && $this->proxy_cloud_response['update_firmware']) {
-            return true;
-        }
-
-        return false;
+        return $this->proxy_cloud_response && $this->proxy_cloud_response['update_firmware'];
     }
 
     public function getFirmwareUrlAttribute(): ?string
@@ -231,7 +227,7 @@ class Device extends Model
             return false;
         }
 
-        $now = $now ? Carbon::instance($now) : now();
+        $now = $now instanceof DateTimeInterface ? Carbon::instance($now) : now();
 
         // Handle overnight ranges (e.g. 22:00 to 06:00)
         return $this->sleep_mode_from < $this->sleep_mode_to
@@ -245,7 +241,7 @@ class Device extends Model
             return null;
         }
 
-        $now = $now ? Carbon::instance($now) : now();
+        $now = $now instanceof DateTimeInterface ? Carbon::instance($now) : now();
         $from = $this->sleep_mode_from;
         $to = $this->sleep_mode_to;
 

app/Models/Playlist.php

@@ -38,11 +38,9 @@ class Playlist extends Model
         }
 
         // Check weekday
-        if ($this->weekdays !== null) {
-            if (! in_array(now()->dayOfWeek, $this->weekdays)) {
+        if ($this->weekdays !== null && ! in_array(now()->dayOfWeek, $this->weekdays)) {
             return false;
         }
-        }
 
         if ($this->active_from !== null && $this->active_until !== null) {
             $now = now();
@@ -53,11 +51,9 @@ class Playlist extends Model
                 if ($now >= $this->active_from || $now <= $this->active_until) {
                     return true;
                 }
-            } else {
-                if ($now >= $this->active_from && $now <= $this->active_until) {
+            } elseif ($now >= $this->active_from && $now <= $this->active_until) {
                 return true;
             }
-            }
 
             return false;
         }

app/Models/PlaylistItem.php

@@ -153,9 +153,7 @@ class PlaylistItem extends Model
         $plugins = Plugin::whereIn('id', $pluginIds)->get();
 
         // Sort the collection to match plugin_ids order
-        $plugins = $plugins->sortBy(function ($plugin) use ($pluginIds) {
-            return array_search($plugin->id, $pluginIds);
-        })->values();
+        $plugins = $plugins->sortBy(fn ($plugin): int|string|false => array_search($plugin->id, $pluginIds))->values();
 
         foreach ($plugins as $index => $plugin) {
             $size = $this->getLayoutSize($index);

app/Models/Plugin.php

@@ -42,7 +42,7 @@ class Plugin extends Model
     {
         parent::boot();
 
-        static::creating(function ($model) {
+        static::creating(function ($model): void {
             if (empty($model->uuid)) {
                 $model->uuid = Str::uuid();
             }
@@ -83,7 +83,7 @@ class Plugin extends Model
                 $currentValue = $this->configuration[$fieldKey] ?? null;
 
                 // If the field has a default value and no current value is set, it's not missing
-                if (($currentValue === null || $currentValue === '' || (is_array($currentValue) && empty($currentValue))) && ! isset($field['default'])) {
+                if (($currentValue === null || $currentValue === '' || ($currentValue === [])) && ! isset($field['default'])) {
                     return true; // Found a required field that is not set and has no default
                 }
             }
@@ -126,7 +126,7 @@ class Plugin extends Model
             // Split URLs by newline and filter out empty lines
             $urls = array_filter(
                 array_map('trim', explode("\n", $this->polling_url)),
-                fn ($url) => ! empty($url)
+                fn ($url): bool => ! empty($url)
             );
 
             // If only one URL, use the original logic without nesting
@@ -237,7 +237,7 @@ class Plugin extends Model
         // Converts to: {% assign temp_filtered = collection | filter: "key", "value" %}{% for item in temp_filtered %}
         $template = preg_replace_callback(
             '/{%\s*for\s+(\w+)\s+in\s+([^|%}]+)\s*\|\s*([^%}]+)%}/',
-            function ($matches) {
+            function ($matches): string {
                 $variableName = mb_trim($matches[1]);
                 $collection = mb_trim($matches[2]);
                 $filter = mb_trim($matches[3]);
@@ -245,7 +245,7 @@ class Plugin extends Model
 
                 return "{% assign {$tempVarName} = {$collection} | {$filter} %}{% for {$variableName} in {$tempVarName} %}";
             },
-            $template
+            (string) $template
         );
 
         return $template;

app/Notifications/BatteryLow.php

@@ -13,15 +13,10 @@ class BatteryLow extends Notification
 {
     use Queueable;
 
-    private Device $device;
-
     /**
      * Create a new notification instance.
      */
-    public function __construct(Device $device)
-    {
-        $this->device = $device;
-    }
+    public function __construct(private Device $device) {}
 
     /**
      * Get the notification's delivery channels.

app/Notifications/Channels/WebhookChannel.php

@@ -11,13 +11,7 @@ use Illuminate\Support\Arr;
 
 class WebhookChannel extends Notification
 {
-    /** @var Client */
-    protected $client;
-
-    public function __construct(Client $client)
-    {
-        $this->client = $client;
-    }
+    public function __construct(protected Client $client) {}
 
     /**
      * Send the given notification.

app/Notifications/Messages/WebhookMessage.php

@@ -13,13 +13,6 @@ final class WebhookMessage extends Notification
      */
     private $query;
 
-    /**
-     * The POST data of the Webhook request.
-     *
-     * @var mixed
-     */
-    private $data;
-
     /**
      * The headers to send with the request.
      *
@@ -36,9 +29,8 @@ final class WebhookMessage extends Notification
 
     /**
      * @param  mixed  $data
-     * @return static
      */
-    public static function create($data = '')
+    public static function create($data = ''): self
     {
         return new self($data);
     }
@@ -46,10 +38,12 @@ final class WebhookMessage extends Notification
     /**
      * @param  mixed  $data
      */
-    public function __construct($data = '')
-    {
-        $this->data = $data;
-    }
+    public function __construct(
+        /**
+         * The POST data of the Webhook request.
+         */
+        private $data = ''
+    ) {}
 
     /**
      * Set the Webhook parameters to be URL encoded.
@@ -57,7 +51,7 @@ final class WebhookMessage extends Notification
      * @param  mixed  $query
      * @return $this
      */
-    public function query($query)
+    public function query($query): self
     {
         $this->query = $query;
 
@@ -70,7 +64,7 @@ final class WebhookMessage extends Notification
      * @param  mixed  $data
      * @return $this
      */
-    public function data($data)
+    public function data($data): self
     {
         $this->data = $data;
 
@@ -84,7 +78,7 @@ final class WebhookMessage extends Notification
      * @param  string  $value
      * @return $this
      */
-    public function header($name, $value)
+    public function header($name, $value): self
     {
         $this->headers[$name] = $value;
 
@@ -97,7 +91,7 @@ final class WebhookMessage extends Notification
      * @param  string  $userAgent
      * @return $this
      */
-    public function userAgent($userAgent)
+    public function userAgent($userAgent): self
     {
         $this->headers['User-Agent'] = $userAgent;
 
@@ -109,17 +103,14 @@ final class WebhookMessage extends Notification
      *
      * @return $this
      */
-    public function verify($value = true)
+    public function verify($value = true): self
     {
         $this->verify = $value;
 
         return $this;
     }
 
-    /**
-     * @return array
-     */
-    public function toArray()
+    public function toArray(): array
     {
         return [
             'query' => $this->query,

app/Providers/AppServiceProvider.php

@@ -33,17 +33,19 @@ class AppServiceProvider extends ServiceProvider
 
             $http = clone $this;
             $http->server->set('HTTPS', 'off');
+            if (URL::hasValidSignature($https, $absolute, $ignoreQuery)) {
+                return true;
+            }
 
-            return URL::hasValidSignature($https, $absolute, $ignoreQuery)
-                || URL::hasValidSignature($http, $absolute, $ignoreQuery);
+            return URL::hasValidSignature($http, $absolute, $ignoreQuery);
         });
 
         // Register OIDC provider with Socialite
-        Socialite::extend('oidc', function ($app) {
-            $config = $app['config']['services.oidc'] ?? [];
+        Socialite::extend('oidc', function (\Illuminate\Contracts\Foundation\Application $app): OidcProvider {
+            $config = $app->make('config')->get('services.oidc', []);
 
             return new OidcProvider(
-                $app['request'],
+                $app->make(Request::class),
                 $config['client_id'] ?? null,
                 $config['client_secret'] ?? null,
                 $config['redirect'] ?? null,

app/Services/ImageGenerationService.php

@@ -233,14 +233,14 @@ class ImageGenerationService
         if ($plugin?->id) {
             // Check if any devices have custom dimensions or use non-standard DeviceModels
             $hasCustomDimensions = Device::query()
-                ->where(function ($query) {
+                ->where(function ($query): void {
                     $query->where('width', '!=', 800)
                         ->orWhere('height', '!=', 480)
                         ->orWhere('rotate', '!=', 0);
                 })
-                ->orWhereHas('deviceModel', function ($query) {
+                ->orWhereHas('deviceModel', function ($query): void {
                     // Only allow caching if all device models have standard dimensions (800x480, rotation=0)
-                    $query->where(function ($subQuery) {
+                    $query->where(function ($subQuery): void {
                         $subQuery->where('width', '!=', 800)
                             ->orWhere('height', '!=', 480)
                             ->orWhere('rotation', '!=', 0);

app/Services/OidcProvider.php

@@ -33,7 +33,7 @@ class OidcProvider extends AbstractProvider implements ProviderInterface
     /**
      * Create a new provider instance.
      */
-    public function __construct($request, $clientId, $clientSecret, $redirectUrl, $scopes = [], $guzzle = [])
+    public function __construct(\Illuminate\Http\Request $request, $clientId, $clientSecret, $redirectUrl, $scopes = [], $guzzle = [])
     {
         parent::__construct($request, $clientId, $clientSecret, $redirectUrl, $guzzle);
 
@@ -43,7 +43,7 @@ class OidcProvider extends AbstractProvider implements ProviderInterface
         }
 
         // Handle both full well-known URL and base URL
-        if (str_ends_with($endpoint, '/.well-known/openid-configuration')) {
+        if (str_ends_with((string) $endpoint, '/.well-known/openid-configuration')) {
             $this->baseUrl = str_replace('/.well-known/openid-configuration', '', $endpoint);
         } else {
             $this->baseUrl = mb_rtrim($endpoint, '/');
@@ -73,7 +73,7 @@ class OidcProvider extends AbstractProvider implements ProviderInterface
             }
 
         } catch (Exception $e) {
-            throw new Exception('Failed to load OIDC configuration: '.$e->getMessage());
+            throw new Exception('Failed to load OIDC configuration: '.$e->getMessage(), $e->getCode(), $e);
         }
     }
 

app/Services/PluginExportService.php

@@ -47,44 +47,33 @@ class PluginExportService
         $tempDirName = 'temp/'.uniqid('plugin_export_', true);
         Storage::makeDirectory($tempDirName);
         $tempDir = Storage::path($tempDirName);
-
-        try {
         // Generate settings.yml content
         $settings = $this->generateSettingsYaml($plugin);
         $settingsYaml = Yaml::dump($settings, 10, 2, Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK);
         File::put($tempDir.'/settings.yml', $settingsYaml);
-
         // Generate full template content
         $fullTemplate = $this->generateFullTemplate($plugin);
         $extension = $plugin->markup_language === 'liquid' ? 'liquid' : 'blade.php';
         File::put($tempDir.'/full.'.$extension, $fullTemplate);
-
         // Generate shared.liquid if needed (for liquid templates)
         if ($plugin->markup_language === 'liquid') {
-                $sharedTemplate = $this->generateSharedTemplate($plugin);
+            $sharedTemplate = $this->generateSharedTemplate();
             if ($sharedTemplate) {
                 File::put($tempDir.'/shared.liquid', $sharedTemplate);
             }
         }
-
         // Create ZIP file
         $zipPath = $tempDir.'/plugin_'.$plugin->trmnlp_id.'.zip';
         $zip = new ZipArchive();
-
         if ($zip->open($zipPath, ZipArchive::CREATE) !== true) {
             throw new Exception('Could not create ZIP file.');
         }
-
         // Add files directly to ZIP root
         $this->addDirectoryToZip($zip, $tempDir, '');
         $zip->close();
 
         // Return the ZIP file as a download response
         return response()->download($zipPath, 'plugin_'.$plugin->trmnlp_id.'.zip');
-
-        } catch (Exception $e) {
-            throw $e;
-        }
     }
 
     /**
@@ -150,7 +139,7 @@ class PluginExportService
     /**
      * Generate the shared template content (for liquid templates)
      */
-    private function generateSharedTemplate(Plugin $plugin)
+    private function generateSharedTemplate(): null
     {
         // For now, we don't have a way to store shared templates separately
         // TODO - add support for shared templates
@@ -170,14 +159,10 @@ class PluginExportService
         foreach ($files as $file) {
             if (! $file->isDir()) {
                 $filePath = $file->getRealPath();
-                $fileName = basename($filePath);
+                $fileName = basename((string) $filePath);
 
                 // For root directory, just use the filename
-                if ($zipPath === '') {
-                    $relativePath = $fileName;
-                } else {
-                    $relativePath = $zipPath.'/'.mb_substr($filePath, mb_strlen($dirPath) + 1);
-                }
+                $relativePath = $zipPath === '' ? $fileName : $zipPath.'/'.mb_substr((string) $filePath, mb_strlen($dirPath) + 1);
 
                 $zip->addFile($filePath, $relativePath);
             }

app/Services/PluginImportService.php

@@ -72,7 +72,7 @@ class PluginImportService
 
             // Check if the file ends with .liquid to set markup language
             $markupLanguage = 'blade';
-            if (pathinfo($filePaths['fullLiquidPath'], PATHINFO_EXTENSION) === 'liquid') {
+            if (pathinfo((string) $filePaths['fullLiquidPath'], PATHINFO_EXTENSION) === 'liquid') {
                 $markupLanguage = 'liquid';
             }
 
@@ -197,7 +197,7 @@ class PluginImportService
 
             // Check if the file ends with .liquid to set markup language
             $markupLanguage = 'blade';
-            if (pathinfo($filePaths['fullLiquidPath'], PATHINFO_EXTENSION) === 'liquid') {
+            if (pathinfo((string) $filePaths['fullLiquidPath'], PATHINFO_EXTENSION) === 'liquid') {
                 $markupLanguage = 'liquid';
             }
 
@@ -352,7 +352,7 @@ class PluginImportService
             // check if they're in the root of the ZIP or in a subfolder
             if ($settingsYamlPath && $fullLiquidPath) {
                 // If the files are in the root of the ZIP, create a src folder and move them there
-                $srcDir = dirname($settingsYamlPath);
+                $srcDir = dirname((string) $settingsYamlPath);
 
                 // If the parent directory is not named 'src', create a src directory
                 if (basename($srcDir) !== 'src') {

composer.json

@@ -37,7 +37,8 @@
         "nunomaduro/collision": "^8.6",
         "pestphp/pest": "^4.0",
         "pestphp/pest-plugin-drift": "^4.0",
-        "pestphp/pest-plugin-laravel": "^4.0"
+        "pestphp/pest-plugin-laravel": "^4.0",
+        "rector/rector": "^2.1"
     },
     "autoload": {
         "psr-4": {
@@ -75,7 +76,8 @@
         "test-coverage": "vendor/bin/pest --coverage",
         "format": "vendor/bin/pint",
         "analyse": "vendor/bin/phpstan analyse",
-        "analyze": "vendor/bin/phpstan analyse"
+        "analyze": "vendor/bin/phpstan analyse",
+        "rector": "vendor/bin/rector process"
     },
     "extra": {
         "laravel": {

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "7d12a2e6d66b2e82c6d96d6a0c5366f0",
+    "content-hash": "9122624c0df3b24bc94c7c866aa4e17c",
     "packages": [
         {
             "name": "aws/aws-crt-php",
@@ -10546,6 +10546,66 @@
             ],
             "time": "2025-09-03T06:25:17+00:00"
         },
+        {
+            "name": "rector/rector",
+            "version": "2.1.7",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/rectorphp/rector.git",
+                "reference": "c34cc07c4698f007a20dc5c99ff820089ae413ce"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/rectorphp/rector/zipball/c34cc07c4698f007a20dc5c99ff820089ae413ce",
+                "reference": "c34cc07c4698f007a20dc5c99ff820089ae413ce",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.4|^8.0",
+                "phpstan/phpstan": "^2.1.18"
+            },
+            "conflict": {
+                "rector/rector-doctrine": "*",
+                "rector/rector-downgrade-php": "*",
+                "rector/rector-phpunit": "*",
+                "rector/rector-symfony": "*"
+            },
+            "suggest": {
+                "ext-dom": "To manipulate phpunit.xml via the custom-rule command"
+            },
+            "bin": [
+                "bin/rector"
+            ],
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Instant Upgrade and Automated Refactoring of any PHP code",
+            "homepage": "https://getrector.com/",
+            "keywords": [
+                "automation",
+                "dev",
+                "migration",
+                "refactoring"
+            ],
+            "support": {
+                "issues": "https://github.com/rectorphp/rector/issues",
+                "source": "https://github.com/rectorphp/rector/tree/2.1.7"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/tomasvotruba",
+                    "type": "github"
+                }
+            ],
+            "time": "2025-09-10T11:13:58+00:00"
+        },
         {
             "name": "sebastian/cli-parser",
             "version": "4.2.0",

rector.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Config\RectorConfig;
+use Rector\Set\ValueObject\LevelSetList;
+use Rector\Set\ValueObject\SetList;
+
+return static function (RectorConfig $rectorConfig): void {
+    $rectorConfig->paths([
+        __DIR__.'/app',
+        __DIR__.'/tests',
+    ]);
+
+    $rectorConfig->sets([
+        LevelSetList::UP_TO_PHP_82,
+        SetList::CODE_QUALITY,
+        SetList::DEAD_CODE,
+        SetList::EARLY_RETURN,
+        SetList::TYPE_DECLARATION,
+    ]);
+
+    $rectorConfig->skip([
+        // Skip any specific rules if needed
+    ]);
+};

tests/Feature/Api/DeviceEndpointsTest.php

@@ -14,13 +14,13 @@ use Laravel\Sanctum\Sanctum;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-beforeEach(function () {
+beforeEach(function (): void {
     TrmnlPipeline::fake();
     Storage::fake('public');
     Storage::disk('public')->makeDirectory('/images/generated');
 });
 
-test('device can fetch display data with valid credentials', function () {
+test('device can fetch display data with valid credentials', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -52,7 +52,7 @@ test('device can fetch display data with valid credentials', function () {
         ->last_firmware_version->toBe('1.0.0');
 });
 
-test('display endpoint includes image_url_timeout when configured', function () {
+test('display endpoint includes image_url_timeout when configured', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -74,7 +74,7 @@ test('display endpoint includes image_url_timeout when configured', function ()
         ]);
 });
 
-test('display endpoint omits image_url_timeout when not configured', function () {
+test('display endpoint omits image_url_timeout when not configured', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -94,7 +94,7 @@ test('display endpoint omits image_url_timeout when not configured', function ()
         ->assertJsonMissing(['image_url_timeout']);
 });
 
-test('new device is auto-assigned to user with auto-assign enabled', function () {
+test('new device is auto-assigned to user with auto-assign enabled', function (): void {
     $user = User::factory()->create(['assign_new_devices' => true]);
 
     $response = $this->withHeaders([
@@ -114,7 +114,7 @@ test('new device is auto-assigned to user with auto-assign enabled', function ()
         ->api_key->toBe('new-device-key');
 });
 
-test('new device is auto-assigned and mirrors specified device', function () {
+test('new device is auto-assigned and mirrors specified device', function (): void {
     // Create a source device that will be mirrored
     $sourceDevice = Device::factory()->create([
         'mac_address' => 'AA:BB:CC:DD:EE:FF',
@@ -153,7 +153,7 @@ test('new device is auto-assigned and mirrors specified device', function () {
     ]);
 });
 
-test('device setup endpoint returns correct data', function () {
+test('device setup endpoint returns correct data', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -172,7 +172,7 @@ test('device setup endpoint returns correct data', function () {
         ]);
 });
 
-test('device can submit logs', function () {
+test('device can submit logs', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -200,7 +200,7 @@ test('device can submit logs', function () {
     expect($device->logs()->count())->toBe(1);
 });
 
-test('device can submit logs in revised format', function () {
+test('device can submit logs in revised format', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -240,7 +240,7 @@ test('device can submit logs in revised format', function () {
 //    $response->assertOk();
 // });
 
-test('user cannot update display for devices they do not own', function () {
+test('user cannot update display for devices they do not own', function (): void {
     $user = User::factory()->create();
     $otherUser = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $otherUser->id]);
@@ -255,7 +255,7 @@ test('user cannot update display for devices they do not own', function () {
     $response->assertForbidden();
 });
 
-test('invalid device credentials return error', function () {
+test('invalid device credentials return error', function (): void {
     $response = $this->withHeaders([
         'id' => 'invalid-mac',
         'access-token' => 'invalid-token',
@@ -265,7 +265,7 @@ test('invalid device credentials return error', function () {
         ->assertJson(['message' => 'MAC Address not registered or invalid access token']);
 });
 
-test('log endpoint requires valid device credentials', function () {
+test('log endpoint requires valid device credentials', function (): void {
     $response = $this->withHeaders([
         'id' => 'invalid-mac',
         'access-token' => 'invalid-token',
@@ -275,7 +275,7 @@ test('log endpoint requires valid device credentials', function () {
         ->assertJson(['message' => 'Device not found or invalid access token']);
 });
 
-test('update_firmware flag is only returned once', function () {
+test('update_firmware flag is only returned once', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -320,7 +320,7 @@ test('update_firmware flag is only returned once', function () {
     expect($device->proxy_cloud_response['update_firmware'])->toBeFalse();
 });
 
-test('authenticated user can fetch device status', function () {
+test('authenticated user can fetch device status', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create([
         'user_id' => $user->id,
@@ -354,7 +354,7 @@ test('authenticated user can fetch device status', function () {
         ]);
 });
 
-test('user cannot fetch status for devices they do not own', function () {
+test('user cannot fetch status for devices they do not own', function (): void {
     $user = User::factory()->create();
     $otherUser = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $otherUser->id]);
@@ -366,7 +366,7 @@ test('user cannot fetch status for devices they do not own', function () {
     $response->assertForbidden();
 });
 
-test('display status endpoint requires device_id parameter', function () {
+test('display status endpoint requires device_id parameter', function (): void {
     $user = User::factory()->create();
     Sanctum::actingAs($user);
 
@@ -376,7 +376,7 @@ test('display status endpoint requires device_id parameter', function () {
         ->assertJsonValidationErrors(['device_id']);
 });
 
-test('display status endpoint requires valid device_id', function () {
+test('display status endpoint requires valid device_id', function (): void {
     $user = User::factory()->create();
     Sanctum::actingAs($user);
 
@@ -386,7 +386,7 @@ test('display status endpoint requires valid device_id', function () {
         ->assertJsonValidationErrors(['device_id']);
 });
 
-test('device can mirror another device', function () {
+test('device can mirror another device', function (): void {
     // Create source device with a playlist and image
     $sourceDevice = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
@@ -428,7 +428,7 @@ test('device can mirror another device', function () {
         ->last_firmware_version->toBe('1.0.0');
 });
 
-test('device can fetch current screen data', function () {
+test('device can fetch current screen data', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -451,7 +451,7 @@ test('device can fetch current screen data', function () {
         ]);
 });
 
-test('current_screen endpoint requires valid device credentials', function () {
+test('current_screen endpoint requires valid device credentials', function (): void {
     $response = $this->withHeaders([
         'access-token' => 'invalid-token',
     ])->get('/api/current_screen');
@@ -460,7 +460,7 @@ test('current_screen endpoint requires valid device credentials', function () {
         ->assertJson(['message' => 'Device not found or invalid access token']);
 });
 
-test('authenticated user can fetch their devices', function () {
+test('authenticated user can fetch their devices', function (): void {
     $user = User::factory()->create();
     $devices = Device::factory()->count(2)->create([
         'user_id' => $user->id,
@@ -502,7 +502,7 @@ test('authenticated user can fetch their devices', function () {
     ]);
 });
 
-test('plugin caches image until data is stale', function () {
+test('plugin caches image until data is stale', function (): void {
     // Create source device with a playlist
     $device = Device::factory()->create([
         'mac_address' => '55:11:22:33:44:55',
@@ -577,7 +577,7 @@ test('plugin caches image until data is stale', function () {
         ->not->toBe($firstResponse['filename']);
 });
 
-test('plugins in playlist are rendered in order', function () {
+test('plugins in playlist are rendered in order', function (): void {
     // Create source device with a playlist
     $device = Device::factory()->create([
         'mac_address' => '55:11:22:33:44:55',
@@ -681,7 +681,7 @@ test('plugins in playlist are rendered in order', function () {
         ->not->toBe($secondResponse['filename']);
 });
 
-test('display endpoint updates last_refreshed_at timestamp', function () {
+test('display endpoint updates last_refreshed_at timestamp', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -702,7 +702,7 @@ test('display endpoint updates last_refreshed_at timestamp', function () {
         ->and($device->last_refreshed_at->diffInSeconds(now()))->toBeLessThan(2);
 });
 
-test('display endpoint updates last_refreshed_at timestamp for mirrored devices', function () {
+test('display endpoint updates last_refreshed_at timestamp for mirrored devices', function (): void {
     // Create source device
     $sourceDevice = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
@@ -731,7 +731,7 @@ test('display endpoint updates last_refreshed_at timestamp for mirrored devices'
         ->and($mirrorDevice->last_refreshed_at->diffInSeconds(now()))->toBeLessThan(2);
 });
 
-test('display endpoint handles mashup playlist items correctly', function () {
+test('display endpoint handles mashup playlist items correctly', function (): void {
     // Create a device
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
@@ -791,7 +791,7 @@ test('display endpoint handles mashup playlist items correctly', function () {
     expect($playlistItem->last_displayed_at)->not->toBeNull();
 });
 
-test('device in sleep mode returns sleep image and correct refresh rate', function () {
+test('device in sleep mode returns sleep image and correct refresh rate', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -821,7 +821,7 @@ test('device in sleep mode returns sleep image and correct refresh rate', functi
     Carbon\Carbon::setTestNow(); // Clear test time
 });
 
-test('device not in sleep mode returns normal image', function () {
+test('device not in sleep mode returns normal image', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -850,7 +850,7 @@ test('device not in sleep mode returns normal image', function () {
     Carbon\Carbon::setTestNow(); // Clear test time
 });
 
-test('device returns sleep.png and correct refresh time when paused', function () {
+test('device returns sleep.png and correct refresh time when paused', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -872,7 +872,7 @@ test('device returns sleep.png and correct refresh time when paused', function (
     expect($json['refresh_rate'])->toBeLessThanOrEqual(3600); // ~60 min
 });
 
-test('screens endpoint accepts nullable file_name', function () {
+test('screens endpoint accepts nullable file_name', function (): void {
     Queue::fake();
 
     $device = Device::factory()->create([
@@ -894,7 +894,7 @@ test('screens endpoint accepts nullable file_name', function () {
     Queue::assertPushed(GenerateScreenJob::class);
 });
 
-test('screens endpoint returns 404 for invalid device credentials', function () {
+test('screens endpoint returns 404 for invalid device credentials', function (): void {
     $response = $this->withHeaders([
         'id' => 'invalid-mac',
         'access-token' => 'invalid-key',
@@ -911,7 +911,7 @@ test('screens endpoint returns 404 for invalid device credentials', function ()
         ]);
 });
 
-test('setup endpoint assigns device model when model-id header is provided', function () {
+test('setup endpoint assigns device model when model-id header is provided', function (): void {
     $user = User::factory()->create(['assign_new_devices' => true]);
     $deviceModel = DeviceModel::factory()->create([
         'name' => 'test-model',
@@ -934,7 +934,7 @@ test('setup endpoint assigns device model when model-id header is provided', fun
         ->and($device->device_model_id)->toBe($deviceModel->id);
 });
 
-test('setup endpoint handles non-existent device model gracefully', function () {
+test('setup endpoint handles non-existent device model gracefully', function (): void {
     $user = User::factory()->create(['assign_new_devices' => true]);
 
     $response = $this->withHeaders([

tests/Feature/Api/DeviceImageFormatTest.php

@@ -10,12 +10,12 @@ use Illuminate\Support\Facades\Storage;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-beforeEach(function () {
+beforeEach(function (): void {
     Storage::fake('public');
     Storage::disk('public')->makeDirectory('/images/generated');
 });
 
-test('device with firmware version 1.5.1 gets bmp format', function () {
+test('device with firmware version 1.5.1 gets bmp format', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -52,7 +52,7 @@ test('device with firmware version 1.5.1 gets bmp format', function () {
         ]);
 });
 
-test('device with firmware version 1.5.2 gets png format', function () {
+test('device with firmware version 1.5.2 gets png format', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -88,7 +88,7 @@ test('device with firmware version 1.5.2 gets png format', function () {
         ]);
 });
 
-test('device falls back to bmp when png does not exist', function () {
+test('device falls back to bmp when png does not exist', function (): void {
     $device = Device::factory()->create([
         'mac_address' => '00:11:22:33:44:55',
         'api_key' => 'test-api-key',
@@ -124,7 +124,7 @@ test('device falls back to bmp when png does not exist', function () {
         ]);
 });
 
-test('device without device_model_id and image_format bmp3_1bit_srgb returns bmp when plugin is rendered', function () {
+test('device without device_model_id and image_format bmp3_1bit_srgb returns bmp when plugin is rendered', function (): void {
     // Create a user with auto-assign enabled
     $user = User::factory()->create([
         'assign_new_devices' => true,

tests/Feature/Api/PluginSettingsArchiveTest.php

@@ -8,7 +8,7 @@ use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Str;
 use Laravel\Sanctum\Sanctum;
 
-it('accepts a plugin settings archive and updates the plugin', function () {
+it('accepts a plugin settings archive and updates the plugin', function (): void {
     $user = User::factory()->create();
     $plugin = Plugin::factory()->create([
         'user_id' => $user->id,

tests/Feature/Auth/AuthenticationTest.php

@@ -5,13 +5,13 @@ use Livewire\Volt\Volt as LivewireVolt;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-test('login screen can be rendered', function () {
+test('login screen can be rendered', function (): void {
     $response = $this->get('/login');
 
     $response->assertStatus(200);
 });
 
-test('users can authenticate using the login screen', function () {
+test('users can authenticate using the login screen', function (): void {
     $user = User::factory()->create();
 
     $response = LivewireVolt::test('auth.login')
@@ -26,7 +26,7 @@ test('users can authenticate using the login screen', function () {
     $this->assertAuthenticated();
 });
 
-test('users can not authenticate with invalid password', function () {
+test('users can not authenticate with invalid password', function (): void {
     $user = User::factory()->create();
 
     $this->post('/login', [
@@ -37,7 +37,7 @@ test('users can not authenticate with invalid password', function () {
     $this->assertGuest();
 });
 
-test('users can logout', function () {
+test('users can logout', function (): void {
     $user = User::factory()->create();
 
     $response = $this->actingAs($user)->post('/logout');

tests/Feature/Auth/EmailVerificationTest.php

@@ -7,7 +7,7 @@ use Illuminate\Support\Facades\URL;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-test('email verification screen can be rendered', function () {
+test('email verification screen can be rendered', function (): void {
     $user = User::factory()->unverified()->create();
 
     $response = $this->actingAs($user)->get('/verify-email');
@@ -15,7 +15,7 @@ test('email verification screen can be rendered', function () {
     $response->assertStatus(200);
 });
 
-test('email can be verified', function () {
+test('email can be verified', function (): void {
     $user = User::factory()->unverified()->create();
 
     Event::fake();
@@ -23,7 +23,7 @@ test('email can be verified', function () {
     $verificationUrl = URL::temporarySignedRoute(
         'verification.verify',
         now()->addMinutes(60),
-        ['id' => $user->id, 'hash' => sha1($user->email)]
+        ['id' => $user->id, 'hash' => sha1((string) $user->email)]
     );
 
     $response = $this->actingAs($user)->get($verificationUrl);
@@ -34,7 +34,7 @@ test('email can be verified', function () {
     $response->assertRedirect(route('dashboard', absolute: false).'?verified=1');
 });
 
-test('email is not verified with invalid hash', function () {
+test('email is not verified with invalid hash', function (): void {
     $user = User::factory()->unverified()->create();
 
     $verificationUrl = URL::temporarySignedRoute(

tests/Feature/Auth/PasswordConfirmationTest.php

@@ -5,7 +5,7 @@ use Livewire\Volt\Volt;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-test('confirm password screen can be rendered', function () {
+test('confirm password screen can be rendered', function (): void {
     $user = User::factory()->create();
 
     $response = $this->actingAs($user)->get('/confirm-password');
@@ -13,7 +13,7 @@ test('confirm password screen can be rendered', function () {
     $response->assertStatus(200);
 });
 
-test('password can be confirmed', function () {
+test('password can be confirmed', function (): void {
     $user = User::factory()->create();
 
     $this->actingAs($user);
@@ -27,7 +27,7 @@ test('password can be confirmed', function () {
         ->assertRedirect(route('dashboard', absolute: false));
 });
 
-test('password is not confirmed with invalid password', function () {
+test('password is not confirmed with invalid password', function (): void {
     $user = User::factory()->create();
 
     $this->actingAs($user);

tests/Feature/Auth/PasswordResetTest.php

@@ -7,13 +7,13 @@ use Livewire\Volt\Volt;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-test('reset password link screen can be rendered', function () {
+test('reset password link screen can be rendered', function (): void {
     $response = $this->get('/forgot-password');
 
     $response->assertStatus(200);
 });
 
-test('reset password link can be requested', function () {
+test('reset password link can be requested', function (): void {
     Notification::fake();
 
     $user = User::factory()->create();
@@ -25,7 +25,7 @@ test('reset password link can be requested', function () {
     Notification::assertSentTo($user, ResetPassword::class);
 });
 
-test('reset password screen can be rendered', function () {
+test('reset password screen can be rendered', function (): void {
     Notification::fake();
 
     $user = User::factory()->create();
@@ -34,7 +34,7 @@ test('reset password screen can be rendered', function () {
         ->set('email', $user->email)
         ->call('sendPasswordResetLink');
 
-    Notification::assertSentTo($user, ResetPassword::class, function ($notification) {
+    Notification::assertSentTo($user, ResetPassword::class, function ($notification): true {
         $response = $this->get('/reset-password/'.$notification->token);
 
         $response->assertStatus(200);
@@ -43,7 +43,7 @@ test('reset password screen can be rendered', function () {
     });
 });
 
-test('password can be reset with valid token', function () {
+test('password can be reset with valid token', function (): void {
     Notification::fake();
 
     $user = User::factory()->create();
@@ -52,7 +52,7 @@ test('password can be reset with valid token', function () {
         ->set('email', $user->email)
         ->call('sendPasswordResetLink');
 
-    Notification::assertSentTo($user, ResetPassword::class, function ($notification) use ($user) {
+    Notification::assertSentTo($user, ResetPassword::class, function ($notification) use ($user): true {
         $response = Volt::test('auth.reset-password', ['token' => $notification->token])
             ->set('email', $user->email)
             ->set('password', 'password')

tests/Feature/Auth/RegistrationTest.php

@@ -4,13 +4,13 @@ use Livewire\Volt\Volt;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-test('registration screen can be rendered', function () {
+test('registration screen can be rendered', function (): void {
     $response = $this->get('/register');
 
     $response->assertStatus(200);
 });
 
-test('new users can register', function () {
+test('new users can register', function (): void {
     $response = Volt::test('auth.register')
         ->set('name', 'Test User')
         ->set('email', 'test@example.com')

tests/Feature/Console/ExampleRecipesSeederCommandTest.php

@@ -7,7 +7,7 @@ use Illuminate\Foundation\Testing\RefreshDatabase;
 
 uses(RefreshDatabase::class);
 
-test('example recipes seeder command calls seeder with correct user id', function () {
+test('example recipes seeder command calls seeder with correct user id', function (): void {
     $seeder = Mockery::mock(ExampleRecipesSeeder::class);
     $seeder->shouldReceive('run')
         ->once()
@@ -19,14 +19,14 @@ test('example recipes seeder command calls seeder with correct user id', functio
         ->assertExitCode(0);
 });
 
-test('example recipes seeder command has correct signature', function () {
+test('example recipes seeder command has correct signature', function (): void {
     $command = $this->app->make(App\Console\Commands\ExampleRecipesSeederCommand::class);
 
     expect($command->getName())->toBe('recipes:seed');
     expect($command->getDescription())->toBe('Seed example recipes');
 });
 
-test('example recipes seeder command prompts for missing input', function () {
+test('example recipes seeder command prompts for missing input', function (): void {
     $seeder = Mockery::mock(ExampleRecipesSeeder::class);
     $seeder->shouldReceive('run')
         ->once()

tests/Feature/Console/FetchProxyCloudResponsesCommandTest.php

@@ -3,7 +3,7 @@
 use App\Jobs\FetchProxyCloudResponses;
 use Illuminate\Support\Facades\Bus;
 
-test('it dispatches fetch proxy cloud responses job', function () {
+test('it dispatches fetch proxy cloud responses job', function (): void {
     // Prevent the job from actually running
     Bus::fake();
 

tests/Feature/Console/FirmwareCheckCommandTest.php

@@ -6,24 +6,24 @@ use Illuminate\Foundation\Testing\RefreshDatabase;
 
 uses(RefreshDatabase::class);
 
-test('firmware check command has correct signature', function () {
+test('firmware check command has correct signature', function (): void {
     $command = $this->app->make(App\Console\Commands\FirmwareCheckCommand::class);
 
     expect($command->getName())->toBe('trmnl:firmware:check');
     expect($command->getDescription())->toBe('Checks for the latest firmware and downloads it if flag --download is passed.');
 });
 
-test('firmware check command runs without errors', function () {
+test('firmware check command runs without errors', function (): void {
     $this->artisan('trmnl:firmware:check')
         ->assertExitCode(0);
 });
 
-test('firmware check command runs with download flag', function () {
+test('firmware check command runs with download flag', function (): void {
     $this->artisan('trmnl:firmware:check', ['--download' => true])
         ->assertExitCode(0);
 });
 
-test('firmware check command can run successfully', function () {
+test('firmware check command can run successfully', function (): void {
     $this->artisan('trmnl:firmware:check')
         ->assertExitCode(0);
 });

tests/Feature/Console/FirmwareUpdateCommandTest.php

@@ -6,12 +6,12 @@ use App\Models\Device;
 use App\Models\Firmware;
 use App\Models\User;
 
-test('firmware update command has correct signature', function () {
+test('firmware update command has correct signature', function (): void {
     $this->artisan('trmnl:firmware:update --help')
         ->assertExitCode(0);
 });
 
-test('firmware update command can be called', function () {
+test('firmware update command can be called', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $user->id]);
     $firmware = Firmware::factory()->create(['version_tag' => '1.0.0']);
@@ -26,7 +26,7 @@ test('firmware update command can be called', function () {
     expect($device->update_firmware_id)->toBe($firmware->id);
 });
 
-test('firmware update command updates all devices when all is selected', function () {
+test('firmware update command updates all devices when all is selected', function (): void {
     $user = User::factory()->create();
     $device1 = Device::factory()->create(['user_id' => $user->id]);
     $device2 = Device::factory()->create(['user_id' => $user->id]);
@@ -44,7 +44,7 @@ test('firmware update command updates all devices when all is selected', functio
     expect($device2->update_firmware_id)->toBe($firmware->id);
 });
 
-test('firmware update command aborts when no devices selected', function () {
+test('firmware update command aborts when no devices selected', function (): void {
     $firmware = Firmware::factory()->create(['version_tag' => '1.0.0']);
 
     $this->artisan('trmnl:firmware:update')
@@ -55,7 +55,7 @@ test('firmware update command aborts when no devices selected', function () {
         ->assertExitCode(0);
 });
 
-test('firmware update command calls firmware check when check is selected', function () {
+test('firmware update command calls firmware check when check is selected', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $user->id]);
     $firmware = Firmware::factory()->create(['version_tag' => '1.0.0']);
@@ -70,7 +70,7 @@ test('firmware update command calls firmware check when check is selected', func
     expect($device->update_firmware_id)->toBe($firmware->id);
 });
 
-test('firmware update command calls firmware check with download when download is selected', function () {
+test('firmware update command calls firmware check with download when download is selected', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $user->id]);
     $firmware = Firmware::factory()->create(['version_tag' => '1.0.0']);

tests/Feature/Console/MashupCreateCommandTest.php

@@ -8,12 +8,12 @@ use App\Models\PlaylistItem;
 use App\Models\Plugin;
 use App\Models\User;
 
-test('mashup create command has correct signature', function () {
+test('mashup create command has correct signature', function (): void {
     $this->artisan('mashup:create --help')
         ->assertExitCode(0);
 });
 
-test('mashup create command creates mashup successfully', function () {
+test('mashup create command creates mashup successfully', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $user->id]);
     $playlist = Playlist::factory()->create(['device_id' => $device->id]);
@@ -40,13 +40,13 @@ test('mashup create command creates mashup successfully', function () {
     expect($playlistItem->getMashupPluginIds())->toContain($plugin1->id, $plugin2->id);
 });
 
-test('mashup create command exits when no devices found', function () {
+test('mashup create command exits when no devices found', function (): void {
     $this->artisan('mashup:create')
         ->expectsOutput('No devices found. Please create a device first.')
         ->assertExitCode(1);
 });
 
-test('mashup create command exits when no playlists found for device', function () {
+test('mashup create command exits when no playlists found for device', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $user->id]);
 
@@ -56,7 +56,7 @@ test('mashup create command exits when no playlists found for device', function
         ->assertExitCode(1);
 });
 
-test('mashup create command exits when no plugins found', function () {
+test('mashup create command exits when no plugins found', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $user->id]);
     $playlist = Playlist::factory()->create(['device_id' => $device->id]);
@@ -70,7 +70,7 @@ test('mashup create command exits when no plugins found', function () {
         ->assertExitCode(1);
 });
 
-test('mashup create command validates mashup name length', function () {
+test('mashup create command validates mashup name length', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $user->id]);
     $playlist = Playlist::factory()->create(['device_id' => $device->id]);
@@ -86,7 +86,7 @@ test('mashup create command validates mashup name length', function () {
         ->assertExitCode(1);
 });
 
-test('mashup create command validates mashup name maximum length', function () {
+test('mashup create command validates mashup name maximum length', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $user->id]);
     $playlist = Playlist::factory()->create(['device_id' => $device->id]);
@@ -104,7 +104,7 @@ test('mashup create command validates mashup name maximum length', function () {
         ->assertExitCode(1);
 });
 
-test('mashup create command uses default name when provided', function () {
+test('mashup create command uses default name when provided', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $user->id]);
     $playlist = Playlist::factory()->create(['device_id' => $device->id]);
@@ -128,7 +128,7 @@ test('mashup create command uses default name when provided', function () {
     expect($playlistItem)->not->toBeNull();
 });
 
-test('mashup create command handles 1x1 layout with single plugin', function () {
+test('mashup create command handles 1x1 layout with single plugin', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $user->id]);
     $playlist = Playlist::factory()->create(['device_id' => $device->id]);

tests/Feature/Console/OidcTestCommandTest.php

@@ -4,12 +4,12 @@ declare(strict_types=1);
 
 use function Pest\Laravel\mock;
 
-test('oidc test command has correct signature', function () {
+test('oidc test command has correct signature', function (): void {
     $this->artisan('oidc:test --help')
         ->assertExitCode(0);
 });
 
-test('oidc test command runs successfully with disabled oidc', function () {
+test('oidc test command runs successfully with disabled oidc', function (): void {
     config([
         'app.url' => 'http://localhost',
         'services.oidc.enabled' => false,
@@ -40,7 +40,7 @@ test('oidc test command runs successfully with disabled oidc', function () {
         ->assertExitCode(0);
 });
 
-test('oidc test command runs successfully with enabled oidc but missing config', function () {
+test('oidc test command runs successfully with enabled oidc but missing config', function (): void {
     config([
         'app.url' => 'http://localhost',
         'services.oidc.enabled' => true,
@@ -70,7 +70,7 @@ test('oidc test command runs successfully with enabled oidc but missing config',
         ->assertExitCode(0);
 });
 
-test('oidc test command runs successfully with partial config', function () {
+test('oidc test command runs successfully with partial config', function (): void {
     config([
         'services.oidc.enabled' => true,
         'services.oidc.endpoint' => 'https://example.com',
@@ -95,9 +95,9 @@ test('oidc test command runs successfully with partial config', function () {
         ->assertExitCode(0);
 });
 
-test('oidc test command runs successfully with full config but disabled', function () {
+test('oidc test command runs successfully with full config but disabled', function (): void {
     // Mock the HTTP client to return fake OIDC configuration
-    mock(GuzzleHttp\Client::class, function ($mock) {
+    mock(GuzzleHttp\Client::class, function ($mock): void {
         $mock->shouldReceive('get')
             ->with('https://example.com/.well-known/openid-configuration')
             ->andReturn(new GuzzleHttp\Psr7\Response(200, [], json_encode([
@@ -129,9 +129,9 @@ test('oidc test command runs successfully with full config but disabled', functi
         ->assertExitCode(0);
 });
 
-test('oidc test command runs successfully with full config and enabled', function () {
+test('oidc test command runs successfully with full config and enabled', function (): void {
     // Mock the HTTP client to return fake OIDC configuration
-    mock(GuzzleHttp\Client::class, function ($mock) {
+    mock(GuzzleHttp\Client::class, function ($mock): void {
         $mock->shouldReceive('get')
             ->with('https://example.com/.well-known/openid-configuration')
             ->andReturn(new GuzzleHttp\Psr7\Response(200, [], json_encode([
@@ -164,9 +164,9 @@ test('oidc test command runs successfully with full config and enabled', functio
         ->assertExitCode(0);
 });
 
-test('oidc test command handles empty scopes', function () {
+test('oidc test command handles empty scopes', function (): void {
     // Mock the HTTP client to return fake OIDC configuration
-    mock(GuzzleHttp\Client::class, function ($mock) {
+    mock(GuzzleHttp\Client::class, function ($mock): void {
         $mock->shouldReceive('get')
             ->with('https://example.com/.well-known/openid-configuration')
             ->andReturn(new GuzzleHttp\Psr7\Response(200, [], json_encode([

tests/Feature/Console/ScreenGeneratorCommandTest.php

@@ -3,7 +3,7 @@
 use App\Jobs\GenerateScreenJob;
 use Illuminate\Support\Facades\Bus;
 
-test('it generates screen with default parameters', function () {
+test('it generates screen with default parameters', function (): void {
     Bus::fake();
 
     $this->artisan('trmnl:screen:generate')

tests/Feature/DashboardTest.php

@@ -4,12 +4,12 @@ use App\Models\User;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-test('guests are redirected to the login page', function () {
+test('guests are redirected to the login page', function (): void {
     $response = $this->get('/dashboard');
     $response->assertRedirect('/login');
 });
 
-test('authenticated users can visit the dashboard', function () {
+test('authenticated users can visit the dashboard', function (): void {
     $user = User::factory()->create();
     $this->actingAs($user);
 

tests/Feature/Devices/DeviceConfigureTest.php

@@ -10,7 +10,7 @@ use function Pest\Laravel\actingAs;
 
 uses(RefreshDatabase::class);
 
-test('configure view displays last_refreshed_at timestamp', function () {
+test('configure view displays last_refreshed_at timestamp', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create([
         'user_id' => $user->id,

tests/Feature/Devices/DeviceRotationTest.php

@@ -8,7 +8,7 @@ use Illuminate\Foundation\Testing\RefreshDatabase;
 
 uses(RefreshDatabase::class);
 
-test('dashboard shows device image with correct rotation', function () {
+test('dashboard shows device image with correct rotation', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create([
         'user_id' => $user->id,
@@ -28,7 +28,7 @@ test('dashboard shows device image with correct rotation', function () {
     $response->assertSee('origin-center');
 });
 
-test('device configure page shows device image with correct rotation', function () {
+test('device configure page shows device image with correct rotation', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create([
         'user_id' => $user->id,
@@ -48,7 +48,7 @@ test('device configure page shows device image with correct rotation', function
     $response->assertSee('origin-center');
 });
 
-test('device with no rotation shows no transform style', function () {
+test('device with no rotation shows no transform style', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create([
         'user_id' => $user->id,
@@ -67,7 +67,7 @@ test('device with no rotation shows no transform style', function () {
     $response->assertSee('-rotate-[0deg]');
 });
 
-test('device with null rotation defaults to 0', function () {
+test('device with null rotation defaults to 0', function (): void {
     $user = User::factory()->create();
     $device = Device::factory()->create([
         'user_id' => $user->id,

tests/Feature/Devices/DeviceTest.php

@@ -5,7 +5,7 @@ use Illuminate\Support\Carbon;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-test('device can be created with basic attributes', function () {
+test('device can be created with basic attributes', function (): void {
     $device = Device::factory()->create([
         'name' => 'Test Device',
     ]);
@@ -14,7 +14,7 @@ test('device can be created with basic attributes', function () {
         ->and($device->name)->toBe('Test Device');
 });
 
-test('battery percentage is calculated correctly', function () {
+test('battery percentage is calculated correctly', function (): void {
     $cases = [
         ['voltage' => 3.0, 'expected' => 0],    // Min voltage
         ['voltage' => 4.2, 'expected' => 100],  // Max voltage
@@ -34,7 +34,7 @@ test('battery percentage is calculated correctly', function () {
     }
 });
 
-test('wifi strength is determined correctly', function () {
+test('wifi strength is determined correctly', function (): void {
     $cases = [
         ['rssi' => 0, 'expected' => 0],     // No signal
         ['rssi' => -90, 'expected' => 1],   // Weak signal
@@ -52,7 +52,7 @@ test('wifi strength is determined correctly', function () {
     }
 });
 
-test('proxy cloud attribute is properly cast to boolean', function () {
+test('proxy cloud attribute is properly cast to boolean', function (): void {
     $device = Device::factory()->create([
         'proxy_cloud' => true,
     ]);
@@ -63,7 +63,7 @@ test('proxy cloud attribute is properly cast to boolean', function () {
     expect($device->proxy_cloud)->toBeFalse();
 });
 
-test('last log request is properly cast to json', function () {
+test('last log request is properly cast to json', function (): void {
     $logData = ['status' => 'success', 'timestamp' => '2024-03-04 12:00:00'];
 
     $device = Device::factory()->create([
@@ -76,7 +76,7 @@ test('last log request is properly cast to json', function () {
         ->toHaveKey('timestamp');
 });
 
-test('getSleepModeEndsInSeconds returns correct value for overnight sleep window', function () {
+test('getSleepModeEndsInSeconds returns correct value for overnight sleep window', function (): void {
     // Set the current time to 12:13
     Carbon::setTestNow(Carbon::create(2024, 1, 1, 12, 13, 0));
 

tests/Feature/Devices/ManageTest.php

@@ -6,7 +6,7 @@ use Livewire\Volt\Volt;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-test('device management page can be rendered', function () {
+test('device management page can be rendered', function (): void {
     $user = User::factory()->create();
 
     $response = $this->actingAs($user)
@@ -15,7 +15,7 @@ test('device management page can be rendered', function () {
     $response->assertOk();
 });
 
-test('user can create a new device', function () {
+test('user can create a new device', function (): void {
     $user = User::factory()->create();
     $this->actingAs($user);
 
@@ -48,7 +48,7 @@ test('user can create a new device', function () {
     expect($device->user_id)->toBe($user->id);
 });
 
-test('device creation requires required fields', function () {
+test('device creation requires required fields', function (): void {
     $user = User::factory()->create();
     $this->actingAs($user);
 
@@ -67,7 +67,7 @@ test('device creation requires required fields', function () {
     ]);
 });
 
-test('user can toggle proxy cloud for their device', function () {
+test('user can toggle proxy cloud for their device', function (): void {
     $user = User::factory()->create();
     $this->actingAs($user);
     $device = Device::factory()->create([
@@ -88,7 +88,7 @@ test('user can toggle proxy cloud for their device', function () {
     expect($device->fresh()->proxy_cloud)->toBeFalse();
 });
 
-test('user cannot toggle proxy cloud for other users devices', function () {
+test('user cannot toggle proxy cloud for other users devices', function (): void {
     $user = User::factory()->create();
     $this->actingAs($user);
 

tests/Feature/ExampleTest.php

@@ -1,6 +1,6 @@
 <?php
 
-it('returns a successful response', function () {
+it('returns a successful response', function (): void {
     $response = $this->get('/');
 
     $response->assertStatus(200);

tests/Feature/FetchDeviceModelsCommandTest.php

@@ -8,7 +8,7 @@ use Illuminate\Support\Facades\Queue;
 
 uses(RefreshDatabase::class);
 
-test('command dispatches fetch device models job', function () {
+test('command dispatches fetch device models job', function (): void {
     Queue::fake();
 
     $this->artisan('device-models:fetch')

tests/Feature/FetchProxyCloudResponsesTest.php

@@ -7,7 +7,7 @@ use Illuminate\Support\Facades\Storage;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-beforeEach(function () {
+beforeEach(function (): void {
     Storage::fake('public');
     Storage::disk('public')->makeDirectory('/images/generated');
     Http::preventStrayRequests();
@@ -18,7 +18,7 @@ beforeEach(function () {
     ]);
 });
 
-test('it fetches and processes proxy cloud responses for devices', function () {
+test('it fetches and processes proxy cloud responses for devices', function (): void {
     config(['services.trmnl.proxy_base_url' => 'https://example.com']);
 
     // Create a test device with proxy cloud enabled
@@ -59,16 +59,14 @@ test('it fetches and processes proxy cloud responses for devices', function () {
     $job->handle();
 
     // Assert HTTP requests were made with correct headers
-    Http::assertSent(function ($request) use ($device) {
-        return $request->hasHeader('id', $device->mac_address) &&
+    Http::assertSent(fn ($request): bool => $request->hasHeader('id', $device->mac_address) &&
         $request->hasHeader('access-token', $device->api_key) &&
         $request->hasHeader('width', 800) &&
         $request->hasHeader('height', 480) &&
         $request->hasHeader('rssi', $device->last_rssi_level) &&
         $request->hasHeader('battery_voltage', $device->last_battery_voltage) &&
         $request->hasHeader('refresh-rate', $device->default_refresh_interval) &&
-            $request->hasHeader('fw-version', $device->last_firmware_version);
-    });
+        $request->hasHeader('fw-version', $device->last_firmware_version));
     // Assert the device was updated
     $device->refresh();
 
@@ -82,7 +80,7 @@ test('it fetches and processes proxy cloud responses for devices', function () {
     Storage::disk('public')->assertExists('images/generated/test-image.bmp');
 });
 
-test('it handles log requests when present', function () {
+test('it handles log requests when present', function (): void {
     $device = Device::factory()->create([
         'proxy_cloud' => true,
         'mac_address' => '00:11:22:33:44:55',
@@ -103,18 +101,16 @@ test('it handles log requests when present', function () {
     $job->handle();
 
     // Assert log request was sent
-    Http::assertSent(function ($request) use ($device) {
-        return $request->url() === config('services.trmnl.proxy_base_url').'/api/log' &&
+    Http::assertSent(fn ($request): bool => $request->url() === config('services.trmnl.proxy_base_url').'/api/log' &&
         $request->hasHeader('id', $device->mac_address) &&
-            $request->body() === json_encode(['message' => 'test log']);
-    });
+        $request->body() === json_encode(['message' => 'test log']));
 
     // Assert log request was cleared
     $device->refresh();
     expect($device->last_log_request)->toBeNull();
 });
 
-test('it handles API errors gracefully', function () {
+test('it handles API errors gracefully', function (): void {
     $device = Device::factory()->create([
         'proxy_cloud' => true,
         'mac_address' => '00:11:22:33:44:55',
@@ -130,7 +126,7 @@ test('it handles API errors gracefully', function () {
     expect(fn () => $job->handle())->not->toThrow(Exception::class);
 });
 
-test('it only processes proxy cloud enabled devices', function () {
+test('it only processes proxy cloud enabled devices', function (): void {
     Http::fake();
     $enabledDevice = Device::factory()->create(['proxy_cloud' => true]);
     $disabledDevice = Device::factory()->create(['proxy_cloud' => false]);
@@ -139,16 +135,12 @@ test('it only processes proxy cloud enabled devices', function () {
     $job->handle();
 
     // Assert request was only made for enabled device
-    Http::assertSent(function ($request) use ($enabledDevice) {
-        return $request->hasHeader('id', $enabledDevice->mac_address);
+    Http::assertSent(fn ($request) => $request->hasHeader('id', $enabledDevice->mac_address));
+
+    Http::assertNotSent(fn ($request) => $request->hasHeader('id', $disabledDevice->mac_address));
 });
 
-    Http::assertNotSent(function ($request) use ($disabledDevice) {
-        return $request->hasHeader('id', $disabledDevice->mac_address);
-    });
-});
-
-test('it fetches and processes proxy cloud responses for devices with BMP images', function () {
+test('it fetches and processes proxy cloud responses for devices with BMP images', function (): void {
     config(['services.trmnl.proxy_base_url' => 'https://example.com']);
 
     // Create a test device with proxy cloud enabled
@@ -176,16 +168,14 @@ test('it fetches and processes proxy cloud responses for devices with BMP images
     $job->handle();
 
     // Assert HTTP requests were made with correct headers
-    Http::assertSent(function ($request) use ($device) {
-        return $request->hasHeader('id', $device->mac_address) &&
+    Http::assertSent(fn ($request): bool => $request->hasHeader('id', $device->mac_address) &&
         $request->hasHeader('access-token', $device->api_key) &&
         $request->hasHeader('width', 800) &&
         $request->hasHeader('height', 480) &&
         $request->hasHeader('rssi', $device->last_rssi_level) &&
         $request->hasHeader('battery_voltage', $device->last_battery_voltage) &&
         $request->hasHeader('refresh-rate', $device->default_refresh_interval) &&
-            $request->hasHeader('fw-version', $device->last_firmware_version);
-    });
+        $request->hasHeader('fw-version', $device->last_firmware_version));
 
     // Assert the device was updated
     $device->refresh();
@@ -201,7 +191,7 @@ test('it fetches and processes proxy cloud responses for devices with BMP images
     expect(Storage::disk('public')->exists('images/generated/test-image.png'))->toBeFalse();
 });
 
-test('it fetches and processes proxy cloud responses for devices with PNG images', function () {
+test('it fetches and processes proxy cloud responses for devices with PNG images', function (): void {
     config(['services.trmnl.proxy_base_url' => 'https://example.com']);
 
     // Create a test device with proxy cloud enabled
@@ -229,16 +219,14 @@ test('it fetches and processes proxy cloud responses for devices with PNG images
     $job->handle();
 
     // Assert HTTP requests were made with correct headers
-    Http::assertSent(function ($request) use ($device) {
-        return $request->hasHeader('id', $device->mac_address) &&
+    Http::assertSent(fn ($request): bool => $request->hasHeader('id', $device->mac_address) &&
         $request->hasHeader('access-token', $device->api_key) &&
         $request->hasHeader('width', 800) &&
         $request->hasHeader('height', 480) &&
         $request->hasHeader('rssi', $device->last_rssi_level) &&
         $request->hasHeader('battery_voltage', $device->last_battery_voltage) &&
         $request->hasHeader('refresh-rate', $device->default_refresh_interval) &&
-            $request->hasHeader('fw-version', $device->last_firmware_version);
-    });
+        $request->hasHeader('fw-version', $device->last_firmware_version));
 
     // Assert the device was updated
     $device->refresh();
@@ -254,7 +242,7 @@ test('it fetches and processes proxy cloud responses for devices with PNG images
     expect(Storage::disk('public')->exists('images/generated/test-image.bmp'))->toBeFalse();
 });
 
-test('it handles missing content type in image URL gracefully', function () {
+test('it handles missing content type in image URL gracefully', function (): void {
     config(['services.trmnl.proxy_base_url' => 'https://example.com']);
 
     // Create a test device with proxy cloud enabled

tests/Feature/GenerateScreenJobTest.php

@@ -7,13 +7,13 @@ use Illuminate\Support\Facades\Storage;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-beforeEach(function () {
+beforeEach(function (): void {
     TrmnlPipeline::fake();
     Storage::fake('public');
     Storage::disk('public')->makeDirectory('/images/generated');
 });
 
-test('it generates screen images and updates device', function () {
+test('it generates screen images and updates device', function (): void {
     $device = Device::factory()->create();
     $job = new GenerateScreenJob($device->id, null, view('trmnl')->render());
     $job->handle();
@@ -27,7 +27,7 @@ test('it generates screen images and updates device', function () {
     Storage::disk('public')->assertExists("/images/generated/{$uuid}.png");
 });
 
-test('it cleans up unused images', function () {
+test('it cleans up unused images', function (): void {
     // Create some test devices with images
     $activeDevice = Device::factory()->create([
         'current_screen_image' => 'uuid-to-be-replaced',
@@ -49,7 +49,7 @@ test('it cleans up unused images', function () {
     Storage::disk('public')->assertMissing('/images/generated/inactive-uuid.bmp');
 });
 
-test('it preserves gitignore file during cleanup', function () {
+test('it preserves gitignore file during cleanup', function (): void {
     Storage::disk('public')->put('/images/generated/.gitignore', '*');
 
     $device = Device::factory()->create();

tests/Feature/Jobs/CleanupDeviceLogsJobTest.php

@@ -7,7 +7,7 @@ use Illuminate\Foundation\Testing\RefreshDatabase;
 
 uses(RefreshDatabase::class);
 
-test('it keeps only the 50 most recent logs per device', function () {
+test('it keeps only the 50 most recent logs per device', function (): void {
     // Create two devices
     $device1 = Device::factory()->create();
     $device2 = Device::factory()->create();

tests/Feature/Jobs/FetchDeviceModelsJobTest.php

@@ -14,12 +14,12 @@ beforeEach(function (): void {
     DeviceModel::truncate();
 });
 
-test('fetch device models job can be dispatched', function () {
+test('fetch device models job can be dispatched', function (): void {
     $job = new FetchDeviceModelsJob();
     expect($job)->toBeInstanceOf(FetchDeviceModelsJob::class);
 });
 
-test('fetch device models job handles successful api response', function () {
+test('fetch device models job handles successful api response', function (): void {
     Http::fake([
         'usetrmnl.com/api/models' => Http::response([
             'data' => [
@@ -65,7 +65,7 @@ test('fetch device models job handles successful api response', function () {
     expect($deviceModel->source)->toBe('api');
 });
 
-test('fetch device models job handles multiple device models', function () {
+test('fetch device models job handles multiple device models', function (): void {
     Http::fake([
         'usetrmnl.com/api/models' => Http::response([
             'data' => [
@@ -114,7 +114,7 @@ test('fetch device models job handles multiple device models', function () {
     expect(DeviceModel::where('name', 'model-2')->exists())->toBeTrue();
 });
 
-test('fetch device models job handles empty data array', function () {
+test('fetch device models job handles empty data array', function (): void {
     Http::fake([
         'usetrmnl.com/api/models' => Http::response([
             'data' => [],
@@ -131,7 +131,7 @@ test('fetch device models job handles empty data array', function () {
     expect(DeviceModel::count())->toBe(0);
 });
 
-test('fetch device models job handles missing data field', function () {
+test('fetch device models job handles missing data field', function (): void {
     Http::fake([
         'usetrmnl.com/api/models' => Http::response([
             'message' => 'No data available',
@@ -148,7 +148,7 @@ test('fetch device models job handles missing data field', function () {
     expect(DeviceModel::count())->toBe(0);
 });
 
-test('fetch device models job handles non-array data', function () {
+test('fetch device models job handles non-array data', function (): void {
     Http::fake([
         'usetrmnl.com/api/models' => Http::response([
             'data' => 'invalid-data',
@@ -165,7 +165,7 @@ test('fetch device models job handles non-array data', function () {
     expect(DeviceModel::count())->toBe(0);
 });
 
-test('fetch device models job handles api failure', function () {
+test('fetch device models job handles api failure', function (): void {
     Http::fake([
         'usetrmnl.com/api/models' => Http::response([
             'error' => 'Internal Server Error',
@@ -185,9 +185,9 @@ test('fetch device models job handles api failure', function () {
     expect(DeviceModel::count())->toBe(0);
 });
 
-test('fetch device models job handles network exception', function () {
+test('fetch device models job handles network exception', function (): void {
     Http::fake([
-        'usetrmnl.com/api/models' => function () {
+        'usetrmnl.com/api/models' => function (): void {
             throw new Exception('Network connection failed');
         },
     ]);
@@ -202,7 +202,7 @@ test('fetch device models job handles network exception', function () {
     expect(DeviceModel::count())->toBe(0);
 });
 
-test('fetch device models job handles device model with missing name', function () {
+test('fetch device models job handles device model with missing name', function (): void {
     Http::fake([
         'usetrmnl.com/api/models' => Http::response([
             'data' => [
@@ -228,7 +228,7 @@ test('fetch device models job handles device model with missing name', function
     expect(DeviceModel::count())->toBe(0);
 });
 
-test('fetch device models job handles device model with partial data', function () {
+test('fetch device models job handles device model with partial data', function (): void {
     Http::fake([
         'usetrmnl.com/api/models' => Http::response([
             'data' => [
@@ -263,7 +263,7 @@ test('fetch device models job handles device model with partial data', function
     expect($deviceModel->source)->toBe('api');
 });
 
-test('fetch device models job updates existing device model', function () {
+test('fetch device models job updates existing device model', function (): void {
     // Create an existing device model
     $existingModel = DeviceModel::factory()->create([
         'name' => 'existing-model',
@@ -309,7 +309,7 @@ test('fetch device models job updates existing device model', function () {
     expect($existingModel->source)->toBe('api');
 });
 
-test('fetch device models job handles processing exception for individual model', function () {
+test('fetch device models job handles processing exception for individual model', function (): void {
     Http::fake([
         'usetrmnl.com/api/models' => Http::response([
             'data' => [

tests/Feature/Jobs/FirmwareDownloadJobTest.php

@@ -5,12 +5,12 @@ use App\Models\Firmware;
 use Illuminate\Support\Facades\Http;
 use Illuminate\Support\Facades\Storage;
 
-beforeEach(function () {
+beforeEach(function (): void {
     Storage::fake('public');
     Storage::disk('public')->makeDirectory('/firmwares');
 });
 
-test('it creates firmwares directory if it does not exist', function () {
+test('it creates firmwares directory if it does not exist', function (): void {
     $firmware = Firmware::factory()->create([
         'url' => 'https://example.com/firmware.bin',
         'version_tag' => '1.0.0',
@@ -26,7 +26,7 @@ test('it creates firmwares directory if it does not exist', function () {
     expect(Storage::disk('public')->exists('firmwares'))->toBeTrue();
 });
 
-test('it downloads firmware and updates storage location', function () {
+test('it downloads firmware and updates storage location', function (): void {
     Http::fake([
         'https://example.com/firmware.bin' => Http::response('fake firmware content', 200),
     ]);
@@ -42,7 +42,7 @@ test('it downloads firmware and updates storage location', function () {
     expect($firmware->fresh()->storage_location)->toBe('firmwares/FW1.0.0.bin');
 });
 
-test('it handles connection exception gracefully', function () {
+test('it handles connection exception gracefully', function (): void {
     $firmware = Firmware::factory()->create([
         'url' => 'https://example.com/firmware.bin',
         'version_tag' => '1.0.0',
@@ -50,7 +50,7 @@ test('it handles connection exception gracefully', function () {
     ]);
 
     Http::fake([
-        'https://example.com/firmware.bin' => function () {
+        'https://example.com/firmware.bin' => function (): void {
             throw new Illuminate\Http\Client\ConnectionException('Connection failed');
         },
     ]);
@@ -65,7 +65,7 @@ test('it handles connection exception gracefully', function () {
     expect($firmware->fresh()->storage_location)->toBeNull();
 });
 
-test('it handles general exception gracefully', function () {
+test('it handles general exception gracefully', function (): void {
     $firmware = Firmware::factory()->create([
         'url' => 'https://example.com/firmware.bin',
         'version_tag' => '1.0.0',
@@ -73,7 +73,7 @@ test('it handles general exception gracefully', function () {
     ]);
 
     Http::fake([
-        'https://example.com/firmware.bin' => function () {
+        'https://example.com/firmware.bin' => function (): void {
             throw new Exception('Unexpected error');
         },
     ]);
@@ -88,7 +88,7 @@ test('it handles general exception gracefully', function () {
     expect($firmware->fresh()->storage_location)->toBeNull();
 });
 
-test('it handles firmware with special characters in version tag', function () {
+test('it handles firmware with special characters in version tag', function (): void {
     Http::fake([
         'https://example.com/firmware.bin' => Http::response('fake firmware content', 200),
     ]);
@@ -103,7 +103,7 @@ test('it handles firmware with special characters in version tag', function () {
     expect($firmware->fresh()->storage_location)->toBe('firmwares/FW1.0.0-beta.bin');
 });
 
-test('it handles firmware with long version tag', function () {
+test('it handles firmware with long version tag', function (): void {
     Http::fake([
         'https://example.com/firmware.bin' => Http::response('fake firmware content', 200),
     ]);
@@ -118,7 +118,7 @@ test('it handles firmware with long version tag', function () {
     expect($firmware->fresh()->storage_location)->toBe('firmwares/FW1.0.0.1234.5678.90.bin');
 });
 
-test('it creates firmwares directory even when it already exists', function () {
+test('it creates firmwares directory even when it already exists', function (): void {
     $firmware = Firmware::factory()->create([
         'url' => 'https://example.com/firmware.bin',
         'version_tag' => '1.0.0',
@@ -138,7 +138,7 @@ test('it creates firmwares directory even when it already exists', function () {
     expect($firmware->fresh()->storage_location)->toBe('firmwares/FW1.0.0.bin');
 });
 
-test('it handles http error response', function () {
+test('it handles http error response', function (): void {
     $firmware = Firmware::factory()->create([
         'url' => 'https://example.com/firmware.bin',
         'version_tag' => '1.0.0',

tests/Feature/Jobs/FirmwarePollJobTest.php

@@ -5,11 +5,11 @@ use App\Models\Firmware;
 use Illuminate\Http\Client\ConnectionException;
 use Illuminate\Support\Facades\Http;
 
-beforeEach(function () {
+beforeEach(function (): void {
     Http::preventStrayRequests();
 });
 
-test('it creates new firmware record when polling', function () {
+test('it creates new firmware record when polling', function (): void {
     Http::fake([
         'https://usetrmnl.com/api/firmware/latest' => Http::response([
             'version' => '1.0.0',
@@ -25,7 +25,7 @@ test('it creates new firmware record when polling', function () {
         ->latest->toBeTrue();
 });
 
-test('it updates existing firmware record when polling', function () {
+test('it updates existing firmware record when polling', function (): void {
     $existingFirmware = Firmware::factory()->create([
         'version_tag' => '1.0.0',
         'url' => 'https://old-url.com/firmware.bin',
@@ -46,7 +46,7 @@ test('it updates existing firmware record when polling', function () {
         ->latest->toBeTrue();
 });
 
-test('it marks previous firmware as not latest when new version is found', function () {
+test('it marks previous firmware as not latest when new version is found', function (): void {
     $oldFirmware = Firmware::factory()->create([
         'version_tag' => '1.0.0',
         'latest' => true,
@@ -65,9 +65,9 @@ test('it marks previous firmware as not latest when new version is found', funct
         ->and(Firmware::where('version_tag', '1.1.0')->first()->latest)->toBeTrue();
 });
 
-test('it handles connection exception gracefully', function () {
+test('it handles connection exception gracefully', function (): void {
     Http::fake([
-        'https://usetrmnl.com/api/firmware/latest' => function () {
+        'https://usetrmnl.com/api/firmware/latest' => function (): void {
             throw new ConnectionException('Connection failed');
         },
     ]);
@@ -78,7 +78,7 @@ test('it handles connection exception gracefully', function () {
     expect(Firmware::count())->toBe(0);
 });
 
-test('it handles invalid response gracefully', function () {
+test('it handles invalid response gracefully', function (): void {
     Http::fake([
         'https://usetrmnl.com/api/firmware/latest' => Http::response(null, 200),
     ]);
@@ -89,7 +89,7 @@ test('it handles invalid response gracefully', function () {
     expect(Firmware::count())->toBe(0);
 });
 
-test('it handles missing version in response gracefully', function () {
+test('it handles missing version in response gracefully', function (): void {
     Http::fake([
         'https://usetrmnl.com/api/firmware/latest' => Http::response([
             'url' => 'https://example.com/firmware.bin',
@@ -102,7 +102,7 @@ test('it handles missing version in response gracefully', function () {
     expect(Firmware::count())->toBe(0);
 });
 
-test('it handles missing url in response gracefully', function () {
+test('it handles missing url in response gracefully', function (): void {
     Http::fake([
         'https://usetrmnl.com/api/firmware/latest' => Http::response([
             'version' => '1.0.0',

tests/Feature/Jobs/NotifyDeviceBatteryLowJobTest.php

@@ -8,7 +8,7 @@ use App\Models\User;
 use App\Notifications\BatteryLow;
 use Illuminate\Support\Facades\Notification;
 
-test('it sends battery low notification when battery is below threshold', function () {
+test('it sends battery low notification when battery is below threshold', function (): void {
     Notification::fake();
 
     config(['app.notifications.battery_low.warn_at_percent' => 20]);
@@ -29,7 +29,7 @@ test('it sends battery low notification when battery is below threshold', functi
     expect($device->battery_notification_sent)->toBeTrue();
 });
 
-test('it does not send notification when battery is above threshold', function () {
+test('it does not send notification when battery is above threshold', function (): void {
     Notification::fake();
 
     config(['app.notifications.battery_low.warn_at_percent' => 20]);
@@ -50,7 +50,7 @@ test('it does not send notification when battery is above threshold', function (
     expect($device->battery_notification_sent)->toBeFalse();
 });
 
-test('it does not send notification when already sent', function () {
+test('it does not send notification when already sent', function (): void {
     Notification::fake();
 
     config(['app.notifications.battery_low.warn_at_percent' => 20]);
@@ -68,7 +68,7 @@ test('it does not send notification when already sent', function () {
     Notification::assertNotSentTo($user, BatteryLow::class);
 });
 
-test('it resets notification flag when battery is above threshold', function () {
+test('it resets notification flag when battery is above threshold', function (): void {
     Notification::fake();
 
     config(['app.notifications.battery_low.warn_at_percent' => 20]);
@@ -89,7 +89,7 @@ test('it resets notification flag when battery is above threshold', function ()
     expect($device->battery_notification_sent)->toBeFalse();
 });
 
-test('it skips devices without associated user', function () {
+test('it skips devices without associated user', function (): void {
     Notification::fake();
 
     config(['app.notifications.battery_low.warn_at_percent' => 20]);
@@ -106,7 +106,7 @@ test('it skips devices without associated user', function () {
     Notification::assertNothingSent();
 });
 
-test('it processes multiple devices correctly', function () {
+test('it processes multiple devices correctly', function (): void {
     Notification::fake();
 
     config(['app.notifications.battery_low.warn_at_percent' => 20]);

tests/Feature/Livewire/Actions/DeviceAutoJoinTest.php

@@ -9,7 +9,7 @@ use Livewire\Livewire;
 
 uses(RefreshDatabase::class);
 
-test('device auto join component can be rendered', function () {
+test('device auto join component can be rendered', function (): void {
     $user = User::factory()->create(['assign_new_devices' => false]);
 
     Livewire::actingAs($user)
@@ -19,7 +19,7 @@ test('device auto join component can be rendered', function () {
         ->assertSet('isFirstUser', true);
 });
 
-test('device auto join component initializes with user settings', function () {
+test('device auto join component initializes with user settings', function (): void {
     $user = User::factory()->create(['assign_new_devices' => true]);
 
     Livewire::actingAs($user)
@@ -28,7 +28,7 @@ test('device auto join component initializes with user settings', function () {
         ->assertSet('isFirstUser', true);
 });
 
-test('device auto join component identifies first user correctly', function () {
+test('device auto join component identifies first user correctly', function (): void {
     $firstUser = User::factory()->create(['id' => 1, 'assign_new_devices' => false]);
     $otherUser = User::factory()->create(['id' => 2, 'assign_new_devices' => false]);
 
@@ -41,7 +41,7 @@ test('device auto join component identifies first user correctly', function () {
         ->assertSet('isFirstUser', false);
 });
 
-test('device auto join component updates user setting when toggled', function () {
+test('device auto join component updates user setting when toggled', function (): void {
     $user = User::factory()->create(['assign_new_devices' => false]);
 
     Livewire::actingAs($user)
@@ -55,7 +55,7 @@ test('device auto join component updates user setting when toggled', function ()
 
 // Validation test removed - Livewire automatically handles boolean conversion
 
-test('device auto join component handles false value correctly', function () {
+test('device auto join component handles false value correctly', function (): void {
     $user = User::factory()->create(['assign_new_devices' => true]);
 
     Livewire::actingAs($user)
@@ -67,7 +67,7 @@ test('device auto join component handles false value correctly', function () {
     expect($user->assign_new_devices)->toBeFalse();
 });
 
-test('device auto join component only updates when deviceAutojoin property changes', function () {
+test('device auto join component only updates when deviceAutojoin property changes', function (): void {
     $user = User::factory()->create(['assign_new_devices' => false]);
 
     $component = Livewire::actingAs($user)
@@ -80,7 +80,7 @@ test('device auto join component only updates when deviceAutojoin property chang
     expect($user->assign_new_devices)->toBeFalse();
 });
 
-test('device auto join component renders correct view', function () {
+test('device auto join component renders correct view', function (): void {
     $user = User::factory()->create();
 
     Livewire::actingAs($user)
@@ -88,7 +88,7 @@ test('device auto join component renders correct view', function () {
         ->assertViewIs('livewire.actions.device-auto-join');
 });
 
-test('device auto join component works with authenticated user', function () {
+test('device auto join component works with authenticated user', function (): void {
     $user = User::factory()->create(['assign_new_devices' => true]);
 
     $component = Livewire::actingAs($user)
@@ -98,7 +98,7 @@ test('device auto join component works with authenticated user', function () {
     expect($component->instance()->isFirstUser)->toBe($user->id === 1);
 });
 
-test('device auto join component handles multiple updates correctly', function () {
+test('device auto join component handles multiple updates correctly', function (): void {
     $user = User::factory()->create(['assign_new_devices' => false]);
 
     $component = Livewire::actingAs($user)

tests/Feature/Livewire/Catalog/IndexTest.php

@@ -6,11 +6,11 @@ use Illuminate\Support\Facades\Http;
 use Livewire\Volt\Volt;
 use Symfony\Component\Yaml\Yaml;
 
-beforeEach(function () {
+beforeEach(function (): void {
     Cache::flush();
 });
 
-it('can render catalog component', function () {
+it('can render catalog component', function (): void {
     // Mock empty catalog response
     Http::fake([
         config('app.catalog_url') => Http::response('', 200),
@@ -21,7 +21,7 @@ it('can render catalog component', function () {
     $component->assertSee('No plugins available');
 });
 
-it('loads plugins from catalog URL', function () {
+it('loads plugins from catalog URL', function (): void {
     // Clear cache first to ensure fresh data
     Cache::forget('catalog_plugins');
 
@@ -62,7 +62,7 @@ it('loads plugins from catalog URL', function () {
     $component->assertSee('MIT');
 });
 
-it('shows error when plugin not found', function () {
+it('shows error when plugin not found', function (): void {
     $user = User::factory()->create();
 
     $this->actingAs($user);
@@ -75,7 +75,7 @@ it('shows error when plugin not found', function () {
     $component->assertHasErrors();
 });
 
-it('shows error when zip_url is missing', function () {
+it('shows error when zip_url is missing', function (): void {
     $user = User::factory()->create();
 
     // Mock the HTTP response for the catalog URL without zip_url

tests/Feature/PlaylistSchedulingTest.php

@@ -10,7 +10,7 @@ use Illuminate\Support\Carbon;
 
 uses(RefreshDatabase::class);
 
-test('playlist scheduling works correctly for time ranges spanning midnight', function () {
+test('playlist scheduling works correctly for time ranges spanning midnight', function (): void {
     // Create a user and device
     $user = User::factory()->create();
     $device = Device::factory()->create(['user_id' => $user->id]);
@@ -85,7 +85,7 @@ test('playlist scheduling works correctly for time ranges spanning midnight', fu
     expect($nextItem->playlist->name)->toBe('Day until Deep Night Playlist');
 });
 
-test('playlist isActiveNow handles midnight spanning correctly', function () {
+test('playlist isActiveNow handles midnight spanning correctly', function (): void {
     $playlist = Playlist::factory()->create([
         'is_active' => true,
         'active_from' => '09:01',
@@ -110,7 +110,7 @@ test('playlist isActiveNow handles midnight spanning correctly', function () {
     expect($playlist->isActiveNow())->toBeFalse();
 });
 
-test('playlist isActiveNow handles normal time ranges correctly', function () {
+test('playlist isActiveNow handles normal time ranges correctly', function (): void {
     $playlist = Playlist::factory()->create([
         'is_active' => true,
         'active_from' => '09:00',

tests/Feature/PluginArchiveTest.php

@@ -9,11 +9,11 @@ use App\Services\PluginImportService;
 use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Facades\Storage;
 
-beforeEach(function () {
+beforeEach(function (): void {
     Storage::fake('local');
 });
 
-it('exports plugin to zip file in correct format', function () {
+it('exports plugin to zip file in correct format', function (): void {
     $user = User::factory()->create();
     $plugin = Plugin::factory()->create([
         'user_id' => $user->id,
@@ -42,7 +42,7 @@ it('exports plugin to zip file in correct format', function () {
     expect($response->getFile()->getFilename())->toContain('test-plugin-123.zip');
 });
 
-it('exports plugin with polling configuration', function () {
+it('exports plugin with polling configuration', function (): void {
     $user = User::factory()->create();
     $plugin = Plugin::factory()->create([
         'user_id' => $user->id,
@@ -63,7 +63,7 @@ it('exports plugin with polling configuration', function () {
     expect($response)->toBeInstanceOf(Symfony\Component\HttpFoundation\BinaryFileResponse::class);
 });
 
-it('exports and imports plugin maintaining all data', function () {
+it('exports and imports plugin maintaining all data', function (): void {
     $user = User::factory()->create();
     $originalPlugin = Plugin::factory()->create([
         'user_id' => $user->id,
@@ -122,7 +122,7 @@ it('exports and imports plugin maintaining all data', function () {
     expect($importedPlugin->data_payload)->toBe(['items' => [1, 2, 3]]);
 });
 
-it('handles blade templates correctly', function () {
+it('handles blade templates correctly', function (): void {
     $user = User::factory()->create();
     $plugin = Plugin::factory()->create([
         'user_id' => $user->id,
@@ -138,7 +138,7 @@ it('handles blade templates correctly', function () {
     expect($response)->toBeInstanceOf(Symfony\Component\HttpFoundation\BinaryFileResponse::class);
 });
 
-it('removes wrapper div from exported markup', function () {
+it('removes wrapper div from exported markup', function (): void {
     $user = User::factory()->create();
     $plugin = Plugin::factory()->create([
         'user_id' => $user->id,
@@ -154,7 +154,7 @@ it('removes wrapper div from exported markup', function () {
     expect($response)->toBeInstanceOf(Symfony\Component\HttpFoundation\BinaryFileResponse::class);
 });
 
-it('converts polling headers correctly', function () {
+it('converts polling headers correctly', function (): void {
     $user = User::factory()->create();
     $plugin = Plugin::factory()->create([
         'user_id' => $user->id,
@@ -170,7 +170,7 @@ it('converts polling headers correctly', function () {
     expect($response)->toBeInstanceOf(Symfony\Component\HttpFoundation\BinaryFileResponse::class);
 });
 
-it('api route returns zip file for authenticated user', function () {
+it('api route returns zip file for authenticated user', function (): void {
     $user = User::factory()->create();
     $plugin = Plugin::factory()->create([
         'user_id' => $user->id,
@@ -188,7 +188,7 @@ it('api route returns zip file for authenticated user', function () {
     $response->assertHeader('Content-Disposition', 'attachment; filename=plugin_api-test-404.zip');
 });
 
-it('api route returns 404 for non-existent plugin', function () {
+it('api route returns 404 for non-existent plugin', function (): void {
     $user = User::factory()->create();
 
     $response = $this->actingAs($user)
@@ -197,13 +197,13 @@ it('api route returns 404 for non-existent plugin', function () {
     $response->assertStatus(404);
 });
 
-it('api route returns 401 for unauthenticated user', function () {
+it('api route returns 401 for unauthenticated user', function (): void {
     $response = $this->getJson('/api/plugin_settings/test-id/archive');
 
     $response->assertStatus(401);
 });
 
-it('api route returns 404 for plugin belonging to different user', function () {
+it('api route returns 404 for plugin belonging to different user', function (): void {
     $user1 = User::factory()->create();
     $user2 = User::factory()->create();
     $plugin = Plugin::factory()->create([
@@ -217,7 +217,7 @@ it('api route returns 404 for plugin belonging to different user', function () {
     $response->assertStatus(404);
 });
 
-it('exports zip with files in root directory', function () {
+it('exports zip with files in root directory', function (): void {
     $user = User::factory()->create();
     $plugin = Plugin::factory()->create([
         'user_id' => $user->id,
@@ -243,7 +243,7 @@ it('exports zip with files in root directory', function () {
     $zip->close();
 });
 
-it('maintains correct yaml field order', function () {
+it('maintains correct yaml field order', function (): void {
     $user = User::factory()->create();
     $plugin = Plugin::factory()->create([
         'user_id' => $user->id,

tests/Feature/PluginDefaultValuesTest.php

@@ -6,7 +6,7 @@ use Illuminate\Foundation\Testing\RefreshDatabase;
 
 uses(RefreshDatabase::class);
 
-test('plugin import extracts default values from custom_fields and stores in configuration', function () {
+test('plugin import extracts default values from custom_fields and stores in configuration', function (): void {
     // Create a user
     $user = User::factory()->create();
 
@@ -74,7 +74,7 @@ test('plugin import extracts default values from custom_fields and stores in con
     expect($plugin->configuration_template['custom_fields'])->toHaveCount(3);
 });
 
-test('plugin import handles custom_fields without default values', function () {
+test('plugin import handles custom_fields without default values', function (): void {
     // Create a user
     $user = User::factory()->create();
 

tests/Feature/PluginImportTest.php

@@ -9,11 +9,11 @@ use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Facades\Http;
 use Illuminate\Support\Facades\Storage;
 
-beforeEach(function () {
+beforeEach(function (): void {
     Storage::fake('local');
 });
 
-it('imports plugin from valid zip file', function () {
+it('imports plugin from valid zip file', function (): void {
     $user = User::factory()->create();
 
     // Create a mock ZIP file with the required structure
@@ -38,7 +38,7 @@ it('imports plugin from valid zip file', function () {
         ->and($plugin->configuration['api_key'])->toBe('default-api-key');
 });
 
-it('imports plugin with shared.liquid file', function () {
+it('imports plugin with shared.liquid file', function (): void {
     $user = User::factory()->create();
 
     $zipContent = createMockZipFile([
@@ -56,7 +56,7 @@ it('imports plugin with shared.liquid file', function () {
         ->and($plugin->render_markup)->toContain('<div class="view view--{{ size }}">');
 });
 
-it('imports plugin with files in root directory', function () {
+it('imports plugin with files in root directory', function (): void {
     $user = User::factory()->create();
 
     $zipContent = createMockZipFile([
@@ -73,17 +73,17 @@ it('imports plugin with files in root directory', function () {
         ->and($plugin->name)->toBe('Test Plugin');
 });
 
-it('throws exception for invalid zip file', function () {
+it('throws exception for invalid zip file', function (): void {
     $user = User::factory()->create();
 
     $zipFile = UploadedFile::fake()->createWithContent('invalid.zip', 'not a zip file');
 
     $pluginImportService = new PluginImportService();
-    expect(fn () => $pluginImportService->importFromZip($zipFile, $user))
+    expect(fn (): Plugin => $pluginImportService->importFromZip($zipFile, $user))
         ->toThrow(Exception::class, 'Could not open the ZIP file.');
 });
 
-it('throws exception for missing required files', function () {
+it('throws exception for missing required files', function (): void {
     $user = User::factory()->create();
 
     $zipContent = createMockZipFile([
@@ -94,11 +94,11 @@ it('throws exception for missing required files', function () {
     $zipFile = UploadedFile::fake()->createWithContent('test-plugin.zip', $zipContent);
 
     $pluginImportService = new PluginImportService();
-    expect(fn () => $pluginImportService->importFromZip($zipFile, $user))
+    expect(fn (): Plugin => $pluginImportService->importFromZip($zipFile, $user))
         ->toThrow(Exception::class, 'Invalid ZIP structure. Required files settings.yml and full.liquid are missing.');
 });
 
-it('sets default values when settings are missing', function () {
+it('sets default values when settings are missing', function (): void {
     $user = User::factory()->create();
 
     $zipContent = createMockZipFile([
@@ -117,7 +117,7 @@ it('sets default values when settings are missing', function () {
         ->and($plugin->polling_verb)->toBe('get'); // default value
 });
 
-it('handles blade markup language correctly', function () {
+it('handles blade markup language correctly', function (): void {
     $user = User::factory()->create();
 
     $zipContent = createMockZipFile([
@@ -133,7 +133,7 @@ it('handles blade markup language correctly', function () {
     expect($plugin->markup_language)->toBe('blade');
 });
 
-it('imports plugin from monorepo with zip_entry_path parameter', function () {
+it('imports plugin from monorepo with zip_entry_path parameter', function (): void {
     $user = User::factory()->create();
 
     // Create a mock ZIP file with plugin in a subdirectory
@@ -152,7 +152,7 @@ it('imports plugin from monorepo with zip_entry_path parameter', function () {
         ->and($plugin->name)->toBe('Test Plugin');
 });
 
-it('imports plugin from monorepo with src subdirectory', function () {
+it('imports plugin from monorepo with src subdirectory', function (): void {
     $user = User::factory()->create();
 
     // Create a mock ZIP file with plugin in a subdirectory with src folder
@@ -171,7 +171,7 @@ it('imports plugin from monorepo with src subdirectory', function () {
         ->and($plugin->name)->toBe('Test Plugin');
 });
 
-it('imports plugin from monorepo with shared.liquid in subdirectory', function () {
+it('imports plugin from monorepo with shared.liquid in subdirectory', function (): void {
     $user = User::factory()->create();
 
     $zipContent = createMockZipFile([
@@ -189,7 +189,7 @@ it('imports plugin from monorepo with shared.liquid in subdirectory', function (
         ->and($plugin->render_markup)->toContain('<div class="view view--{{ size }}">');
 });
 
-it('imports plugin from URL with zip_entry_path parameter', function () {
+it('imports plugin from URL with zip_entry_path parameter', function (): void {
     $user = User::factory()->create();
 
     // Create a mock ZIP file with plugin in a subdirectory
@@ -214,12 +214,10 @@ it('imports plugin from URL with zip_entry_path parameter', function () {
         ->and($plugin->user_id)->toBe($user->id)
         ->and($plugin->name)->toBe('Test Plugin');
 
-    Http::assertSent(function ($request) {
-        return $request->url() === 'https://github.com/example/repo/archive/refs/heads/main.zip';
-    });
+    Http::assertSent(fn ($request): bool => $request->url() === 'https://github.com/example/repo/archive/refs/heads/main.zip');
 });
 
-it('imports plugin from URL with zip_entry_path and src subdirectory', function () {
+it('imports plugin from URL with zip_entry_path and src subdirectory', function (): void {
     $user = User::factory()->create();
 
     // Create a mock ZIP file with plugin in a subdirectory with src folder
@@ -245,7 +243,7 @@ it('imports plugin from URL with zip_entry_path and src subdirectory', function
         ->and($plugin->name)->toBe('Test Plugin');
 });
 
-it('imports plugin from GitHub monorepo with repository-named directory', function () {
+it('imports plugin from GitHub monorepo with repository-named directory', function (): void {
     $user = User::factory()->create();
 
     // Create a mock ZIP file that simulates GitHub's ZIP structure with repository-named directory
@@ -273,7 +271,7 @@ it('imports plugin from GitHub monorepo with repository-named directory', functi
         ->and($plugin->name)->toBe('Test Plugin'); // Should be from example-plugin, not other-plugin
 });
 
-it('finds required files in simple ZIP structure', function () {
+it('finds required files in simple ZIP structure', function (): void {
     $user = User::factory()->create();
 
     // Create a simple ZIP file with just one plugin
@@ -292,7 +290,7 @@ it('finds required files in simple ZIP structure', function () {
         ->and($plugin->name)->toBe('Test Plugin');
 });
 
-it('finds required files in GitHub monorepo structure with zip_entry_path', function () {
+it('finds required files in GitHub monorepo structure with zip_entry_path', function (): void {
     $user = User::factory()->create();
 
     // Create a mock ZIP file that simulates GitHub's ZIP structure
@@ -313,7 +311,7 @@ it('finds required files in GitHub monorepo structure with zip_entry_path', func
         ->and($plugin->name)->toBe('Test Plugin'); // Should be from example-plugin, not other-plugin
 });
 
-it('imports specific plugin from monorepo zip with zip_entry_path parameter', function () {
+it('imports specific plugin from monorepo zip with zip_entry_path parameter', function (): void {
     $user = User::factory()->create();
 
     // Create a mock ZIP file with 2 plugins in a monorepo structure

tests/Feature/PluginInlineTemplatesTest.php

@@ -5,7 +5,7 @@ use Illuminate\Foundation\Testing\RefreshDatabase;
 
 uses(RefreshDatabase::class);
 
-test('renders plugin with inline templates', function () {
+test('renders plugin with inline templates', function (): void {
     $plugin = Plugin::factory()->create([
         'name' => 'Test Plugin',
         'markup_language' => 'liquid',
@@ -61,16 +61,16 @@ LIQUID
     // Should render both templates
     // Check for any of the facts (since random number generation is non-deterministic)
     $this->assertTrue(
-        str_contains($result, 'Fact 1') ||
-        str_contains($result, 'Fact 2') ||
-        str_contains($result, 'Fact 3')
+        str_contains((string) $result, 'Fact 1') ||
+        str_contains((string) $result, 'Fact 2') ||
+        str_contains((string) $result, 'Fact 3')
     );
     $this->assertStringContainsString('Test Plugin', $result);
     $this->assertStringContainsString('Please try to enjoy each fact equally', $result);
     $this->assertStringContainsString('class="view view--full"', $result);
 });
 
-test('renders plugin with inline templates using with syntax', function () {
+test('renders plugin with inline templates using with syntax', function (): void {
     $plugin = Plugin::factory()->create([
         'name' => 'Test Plugin',
         'markup_language' => 'liquid',
@@ -127,16 +127,16 @@ LIQUID
     // Should render both templates
     // Check for any of the facts (since random number generation is non-deterministic)
     $this->assertTrue(
-        str_contains($result, 'Fact 1') ||
-        str_contains($result, 'Fact 2') ||
-        str_contains($result, 'Fact 3')
+        str_contains((string) $result, 'Fact 1') ||
+        str_contains((string) $result, 'Fact 2') ||
+        str_contains((string) $result, 'Fact 3')
     );
     $this->assertStringContainsString('Test Plugin', $result);
     $this->assertStringContainsString('Please try to enjoy each fact equally', $result);
     $this->assertStringContainsString('class="view view--full"', $result);
 });
 
-test('renders plugin with simple inline template', function () {
+test('renders plugin with simple inline template', function (): void {
     $plugin = Plugin::factory()->create([
         'markup_language' => 'liquid',
         'render_markup' => <<<'LIQUID'
@@ -162,7 +162,7 @@ LIQUID
     $this->assertStringContainsString('class="simple"', $result);
 });
 
-test('renders plugin with liquid filter find_by', function () {
+test('renders plugin with liquid filter find_by', function (): void {
     $plugin = Plugin::factory()->create([
         'markup_language' => 'liquid',
         'render_markup' => <<<'LIQUID'
@@ -194,7 +194,7 @@ LIQUID
     $this->assertStringContainsString('class="user"', $result);
 });
 
-test('renders plugin with liquid filter find_by and fallback', function () {
+test('renders plugin with liquid filter find_by and fallback', function (): void {
     $plugin = Plugin::factory()->create([
         'markup_language' => 'liquid',
         'render_markup' => <<<'LIQUID'
@@ -216,7 +216,7 @@ LIQUID
     $this->assertStringContainsString('Not Found', $result);
 });
 
-test('renders plugin with liquid filter group_by', function () {
+test('renders plugin with liquid filter group_by', function (): void {
     $plugin = Plugin::factory()->create([
         'markup_language' => 'liquid',
         'render_markup' => <<<'LIQUID'

tests/Feature/PluginLiquidFilterTest.php

@@ -14,7 +14,7 @@ use Keepsuit\Liquid\Environment;
  * to:
  * {% assign _temp_xxx = collection | filter: "key", "value" %}{% for item in _temp_xxx %}
  */
-test('where filter works when assigned to variable first', function () {
+test('where filter works when assigned to variable first', function (): void {
     $plugin = Plugin::factory()->create([
         'markup_language' => 'liquid',
         'render_markup' => <<<'LIQUID'
@@ -42,7 +42,7 @@ LIQUID
     $this->assertStringNotContainsString('"type":"L"', $result);
 });
 
-test('where filter works directly in for loop with preprocessing', function () {
+test('where filter works directly in for loop with preprocessing', function (): void {
     $plugin = Plugin::factory()->create([
         'markup_language' => 'liquid',
         'render_markup' => <<<'LIQUID'
@@ -68,7 +68,7 @@ LIQUID
     $this->assertStringNotContainsString('"type":"L"', $result);
 });
 
-test('where filter works directly in for loop with multiple matches', function () {
+test('where filter works directly in for loop with multiple matches', function (): void {
     $plugin = Plugin::factory()->create([
         'markup_language' => 'liquid',
         'render_markup' => <<<'LIQUID'
@@ -95,7 +95,7 @@ LIQUID
     $this->assertStringNotContainsString('"type":"L"', $result);
 });
 
-it('encodes arrays for url_encode as JSON with spaces after commas and then percent-encodes', function () {
+it('encodes arrays for url_encode as JSON with spaces after commas and then percent-encodes', function (): void {
     /** @var Environment $env */
     $env = app('liquid.environment');
     $env->filterRegistry->register(StandardFilters::class);
@@ -109,7 +109,7 @@ it('encodes arrays for url_encode as JSON with spaces after commas and then perc
     expect($output)->toBe('%5B%22common%22%2C%22obscure%22%5D');
 });
 
-it('keeps scalar url_encode behavior intact', function () {
+it('keeps scalar url_encode behavior intact', function (): void {
     /** @var Environment $env */
     $env = app('liquid.environment');
     $env->filterRegistry->register(StandardFilters::class);

tests/Feature/PluginRequiredConfigurationTest.php

@@ -6,7 +6,7 @@ use Illuminate\Foundation\Testing\RefreshDatabase;
 
 uses(RefreshDatabase::class);
 
-test('hasMissingRequiredConfigurationFields returns true when required field is null', function () {
+test('hasMissingRequiredConfigurationFields returns true when required field is null', function (): void {
     $user = User::factory()->create();
 
     $configurationTemplate = [
@@ -39,7 +39,7 @@ test('hasMissingRequiredConfigurationFields returns true when required field is
     expect($plugin->hasMissingRequiredConfigurationFields())->toBeTrue();
 });
 
-test('hasMissingRequiredConfigurationFields returns false when all required fields are set', function () {
+test('hasMissingRequiredConfigurationFields returns false when all required fields are set', function (): void {
     $user = User::factory()->create();
 
     $configurationTemplate = [
@@ -73,7 +73,7 @@ test('hasMissingRequiredConfigurationFields returns false when all required fiel
     expect($plugin->hasMissingRequiredConfigurationFields())->toBeFalse();
 });
 
-test('hasMissingRequiredConfigurationFields returns false when no custom fields exist', function () {
+test('hasMissingRequiredConfigurationFields returns false when no custom fields exist', function (): void {
     $user = User::factory()->create();
 
     $plugin = Plugin::factory()->create([
@@ -85,7 +85,7 @@ test('hasMissingRequiredConfigurationFields returns false when no custom fields
     expect($plugin->hasMissingRequiredConfigurationFields())->toBeFalse();
 });
 
-test('hasMissingRequiredConfigurationFields returns true when explicitly required field is null', function () {
+test('hasMissingRequiredConfigurationFields returns true when explicitly required field is null', function (): void {
     $user = User::factory()->create();
 
     $configurationTemplate = [
@@ -111,7 +111,7 @@ test('hasMissingRequiredConfigurationFields returns true when explicitly require
     expect($plugin->hasMissingRequiredConfigurationFields())->toBeTrue();
 });
 
-test('hasMissingRequiredConfigurationFields returns true when required field is empty string', function () {
+test('hasMissingRequiredConfigurationFields returns true when required field is empty string', function (): void {
     $user = User::factory()->create();
 
     $configurationTemplate = [
@@ -137,7 +137,7 @@ test('hasMissingRequiredConfigurationFields returns true when required field is
     expect($plugin->hasMissingRequiredConfigurationFields())->toBeTrue();
 });
 
-test('hasMissingRequiredConfigurationFields returns true when required array field is empty', function () {
+test('hasMissingRequiredConfigurationFields returns true when required array field is empty', function (): void {
     $user = User::factory()->create();
 
     $configurationTemplate = [
@@ -164,7 +164,7 @@ test('hasMissingRequiredConfigurationFields returns true when required array fie
     expect($plugin->hasMissingRequiredConfigurationFields())->toBeTrue();
 });
 
-test('hasMissingRequiredConfigurationFields returns false when author_bio field is present but other required field is set', function () {
+test('hasMissingRequiredConfigurationFields returns false when author_bio field is present but other required field is set', function (): void {
     $user = User::factory()->create();
 
     $configurationTemplate = [
@@ -193,7 +193,7 @@ test('hasMissingRequiredConfigurationFields returns false when author_bio field
     expect($plugin->hasMissingRequiredConfigurationFields())->toBeFalse();
 });
 
-test('hasMissingRequiredConfigurationFields returns false when field has default value', function () {
+test('hasMissingRequiredConfigurationFields returns false when field has default value', function (): void {
     $user = User::factory()->create();
 
     $configurationTemplate = [
@@ -217,7 +217,7 @@ test('hasMissingRequiredConfigurationFields returns false when field has default
     expect($plugin->hasMissingRequiredConfigurationFields())->toBeFalse();
 });
 
-test('hasMissingRequiredConfigurationFields returns true when required xhrSelect field is missing', function () {
+test('hasMissingRequiredConfigurationFields returns true when required xhrSelect field is missing', function (): void {
     $user = User::factory()->create();
 
     $configurationTemplate = [
@@ -242,7 +242,7 @@ test('hasMissingRequiredConfigurationFields returns true when required xhrSelect
     expect($plugin->hasMissingRequiredConfigurationFields())->toBeTrue();
 });
 
-test('hasMissingRequiredConfigurationFields returns false when required xhrSelect field is set', function () {
+test('hasMissingRequiredConfigurationFields returns false when required xhrSelect field is set', function (): void {
     $user = User::factory()->create();
 
     $configurationTemplate = [

tests/Feature/PluginWebhookTest.php

@@ -3,7 +3,7 @@
 use App\Models\Plugin;
 use Illuminate\Support\Str;
 
-test('webhook updates plugin data for webhook strategy', function () {
+test('webhook updates plugin data for webhook strategy', function (): void {
     // Create a plugin with webhook strategy
     $plugin = Plugin::factory()->create([
         'data_strategy' => 'webhook',
@@ -26,7 +26,7 @@ test('webhook updates plugin data for webhook strategy', function () {
     ]);
 });
 
-test('webhook returns 400 for non-webhook strategy plugins', function () {
+test('webhook returns 400 for non-webhook strategy plugins', function (): void {
     // Create a plugin with non-webhook strategy
     $plugin = Plugin::factory()->create([
         'data_strategy' => 'polling',
@@ -43,7 +43,7 @@ test('webhook returns 400 for non-webhook strategy plugins', function () {
         ->assertJson(['error' => 'Plugin does not use webhook strategy']);
 });
 
-test('webhook returns 400 when merge_variables is missing', function () {
+test('webhook returns 400 when merge_variables is missing', function (): void {
     // Create a plugin with webhook strategy
     $plugin = Plugin::factory()->create([
         'data_strategy' => 'webhook',
@@ -58,7 +58,7 @@ test('webhook returns 400 when merge_variables is missing', function () {
         ->assertJson(['error' => 'Request must contain merge_variables key']);
 });
 
-test('webhook returns 404 for non-existent plugin', function () {
+test('webhook returns 404 for non-existent plugin', function (): void {
     // Make request with non-existent plugin UUID
     $response = $this->postJson('/api/custom_plugins/'.Str::uuid(), [
         'merge_variables' => ['new' => 'data'],

tests/Feature/Settings/PasswordUpdateTest.php

@@ -6,7 +6,7 @@ use Livewire\Volt\Volt;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-test('password can be updated', function () {
+test('password can be updated', function (): void {
     $user = User::factory()->create([
         'password' => Hash::make('password'),
     ]);
@@ -24,7 +24,7 @@ test('password can be updated', function () {
     expect(Hash::check('new-password', $user->refresh()->password))->toBeTrue();
 });
 
-test('correct password must be provided to update password', function () {
+test('correct password must be provided to update password', function (): void {
     $user = User::factory()->create([
         'password' => Hash::make('password'),
     ]);

tests/Feature/Settings/ProfileUpdateTest.php

@@ -5,13 +5,13 @@ use Livewire\Volt\Volt;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-test('profile page is displayed', function () {
+test('profile page is displayed', function (): void {
     $this->actingAs($user = User::factory()->create());
 
     $this->get('/settings/profile')->assertOk();
 });
 
-test('profile information can be updated', function () {
+test('profile information can be updated', function (): void {
     $user = User::factory()->create();
 
     $this->actingAs($user);
@@ -30,7 +30,7 @@ test('profile information can be updated', function () {
     expect($user->email_verified_at)->toBeNull();
 });
 
-test('email verification status is unchanged when email address is unchanged', function () {
+test('email verification status is unchanged when email address is unchanged', function (): void {
     $user = User::factory()->create();
 
     $this->actingAs($user);
@@ -45,7 +45,7 @@ test('email verification status is unchanged when email address is unchanged', f
     expect($user->refresh()->email_verified_at)->not->toBeNull();
 });
 
-test('user can delete their account', function () {
+test('user can delete their account', function (): void {
     $user = User::factory()->create();
 
     $this->actingAs($user);
@@ -62,7 +62,7 @@ test('user can delete their account', function () {
     expect(auth()->check())->toBeFalse();
 });
 
-test('correct password must be provided to delete account', function () {
+test('correct password must be provided to delete account', function (): void {
     $user = User::factory()->create();
 
     $this->actingAs($user);

tests/Unit/ExampleTest.php

@@ -1,5 +1,5 @@
 <?php
 
-test('that true is true', function () {
+test('that true is true', function (): void {
     expect(true)->toBeTrue();
 });

tests/Unit/Liquid/Filters/DataTest.php

@@ -2,14 +2,14 @@
 
 use App\Liquid\Filters\Data;
 
-test('json filter converts arrays to JSON', function () {
+test('json filter converts arrays to JSON', function (): void {
     $filter = new Data();
     $array = ['foo' => 'bar', 'baz' => 'qux'];
 
     expect($filter->json($array))->toBe('{"foo":"bar","baz":"qux"}');
 });
 
-test('json filter converts objects to JSON', function () {
+test('json filter converts objects to JSON', function (): void {
     $filter = new Data();
     $object = new stdClass();
     $object->foo = 'bar';
@@ -18,7 +18,7 @@ test('json filter converts objects to JSON', function () {
     expect($filter->json($object))->toBe('{"foo":"bar","baz":"qux"}');
 });
 
-test('json filter handles nested structures', function () {
+test('json filter handles nested structures', function (): void {
     $filter = new Data();
     $nested = [
         'foo' => 'bar',
@@ -31,7 +31,7 @@ test('json filter handles nested structures', function () {
     expect($filter->json($nested))->toBe('{"foo":"bar","nested":{"baz":"qux","items":[1,2,3]}}');
 });
 
-test('json filter handles scalar values', function () {
+test('json filter handles scalar values', function (): void {
     $filter = new Data();
 
     expect($filter->json('string'))->toBe('"string"');
@@ -40,21 +40,21 @@ test('json filter handles scalar values', function () {
     expect($filter->json(null))->toBe('null');
 });
 
-test('json filter preserves unicode characters', function () {
+test('json filter preserves unicode characters', function (): void {
     $filter = new Data();
     $data = ['message' => 'Hello, 世界'];
 
     expect($filter->json($data))->toBe('{"message":"Hello, 世界"}');
 });
 
-test('json filter does not escape slashes', function () {
+test('json filter does not escape slashes', function (): void {
     $filter = new Data();
     $data = ['url' => 'https://example.com/path'];
 
     expect($filter->json($data))->toBe('{"url":"https://example.com/path"}');
 });
 
-test('find_by filter finds object by key-value pair', function () {
+test('find_by filter finds object by key-value pair', function (): void {
     $filter = new Data();
     $collection = [
         ['name' => 'Ryan', 'age' => 35],
@@ -66,7 +66,7 @@ test('find_by filter finds object by key-value pair', function () {
     expect($result)->toBe(['name' => 'Ryan', 'age' => 35]);
 });
 
-test('find_by filter returns null when no match found', function () {
+test('find_by filter returns null when no match found', function (): void {
     $filter = new Data();
     $collection = [
         ['name' => 'Ryan', 'age' => 35],
@@ -78,7 +78,7 @@ test('find_by filter returns null when no match found', function () {
     expect($result)->toBeNull();
 });
 
-test('find_by filter returns fallback when no match found', function () {
+test('find_by filter returns fallback when no match found', function (): void {
     $filter = new Data();
     $collection = [
         ['name' => 'Ryan', 'age' => 35],
@@ -90,7 +90,7 @@ test('find_by filter returns fallback when no match found', function () {
     expect($result)->toBe('Not Found');
 });
 
-test('find_by filter finds by age', function () {
+test('find_by filter finds by age', function (): void {
     $filter = new Data();
     $collection = [
         ['name' => 'Ryan', 'age' => 35],
@@ -102,7 +102,7 @@ test('find_by filter finds by age', function () {
     expect($result)->toBe(['name' => 'Sara', 'age' => 29]);
 });
 
-test('find_by filter handles empty collection', function () {
+test('find_by filter handles empty collection', function (): void {
     $filter = new Data();
     $collection = [];
 
@@ -110,7 +110,7 @@ test('find_by filter handles empty collection', function () {
     expect($result)->toBeNull();
 });
 
-test('find_by filter handles collection with non-array items', function () {
+test('find_by filter handles collection with non-array items', function (): void {
     $filter = new Data();
     $collection = [
         'not an array',
@@ -122,7 +122,7 @@ test('find_by filter handles collection with non-array items', function () {
     expect($result)->toBe(['name' => 'Ryan', 'age' => 35]);
 });
 
-test('find_by filter handles items without the specified key', function () {
+test('find_by filter handles items without the specified key', function (): void {
     $filter = new Data();
     $collection = [
         ['age' => 35],
@@ -134,7 +134,7 @@ test('find_by filter handles items without the specified key', function () {
     expect($result)->toBe(['name' => 'Ryan', 'age' => 35]);
 });
 
-test('group_by filter groups collection by age', function () {
+test('group_by filter groups collection by age', function (): void {
     $filter = new Data();
     $collection = [
         ['name' => 'Ryan', 'age' => 35],
@@ -153,7 +153,7 @@ test('group_by filter groups collection by age', function () {
     ]);
 });
 
-test('group_by filter groups collection by name', function () {
+test('group_by filter groups collection by name', function (): void {
     $filter = new Data();
     $collection = [
         ['name' => 'Ryan', 'age' => 35],
@@ -172,7 +172,7 @@ test('group_by filter groups collection by name', function () {
     ]);
 });
 
-test('group_by filter handles empty collection', function () {
+test('group_by filter handles empty collection', function (): void {
     $filter = new Data();
     $collection = [];
 
@@ -180,7 +180,7 @@ test('group_by filter handles empty collection', function () {
     expect($result)->toBe([]);
 });
 
-test('group_by filter handles collection with non-array items', function () {
+test('group_by filter handles collection with non-array items', function (): void {
     $filter = new Data();
     $collection = [
         'not an array',
@@ -197,7 +197,7 @@ test('group_by filter handles collection with non-array items', function () {
     ]);
 });
 
-test('group_by filter handles items without the specified key', function () {
+test('group_by filter handles items without the specified key', function (): void {
     $filter = new Data();
     $collection = [
         ['age' => 35],
@@ -217,7 +217,7 @@ test('group_by filter handles items without the specified key', function () {
     ]);
 });
 
-test('group_by filter handles mixed data types as keys', function () {
+test('group_by filter handles mixed data types as keys', function (): void {
     $filter = new Data();
     $collection = [
         ['name' => 'Ryan', 'active' => true],
@@ -238,7 +238,7 @@ test('group_by filter handles mixed data types as keys', function () {
     ]);
 });
 
-test('sample filter returns a random element from array', function () {
+test('sample filter returns a random element from array', function (): void {
     $filter = new Data();
     $array = ['1', '2', '3', '4', '5'];
 
@@ -246,7 +246,7 @@ test('sample filter returns a random element from array', function () {
     expect($result)->toBeIn($array);
 });
 
-test('sample filter returns a random element from string array', function () {
+test('sample filter returns a random element from string array', function (): void {
     $filter = new Data();
     $array = ['cat', 'dog'];
 
@@ -254,7 +254,7 @@ test('sample filter returns a random element from string array', function () {
     expect($result)->toBeIn($array);
 });
 
-test('sample filter returns null for empty array', function () {
+test('sample filter returns null for empty array', function (): void {
     $filter = new Data();
     $array = [];
 
@@ -262,7 +262,7 @@ test('sample filter returns null for empty array', function () {
     expect($result)->toBeNull();
 });
 
-test('sample filter returns the only element from single element array', function () {
+test('sample filter returns the only element from single element array', function (): void {
     $filter = new Data();
     $array = ['single'];
 
@@ -270,7 +270,7 @@ test('sample filter returns the only element from single element array', functio
     expect($result)->toBe('single');
 });
 
-test('sample filter works with mixed data types', function () {
+test('sample filter works with mixed data types', function (): void {
     $filter = new Data();
     $array = [1, 'string', true, null, ['nested']];
 
@@ -278,7 +278,7 @@ test('sample filter works with mixed data types', function () {
     expect($result)->toBeIn($array);
 });
 
-test('parse_json filter parses JSON string to array', function () {
+test('parse_json filter parses JSON string to array', function (): void {
     $filter = new Data();
     $jsonString = '[{"a":1,"b":"c"},"d"]';
 
@@ -286,7 +286,7 @@ test('parse_json filter parses JSON string to array', function () {
     expect($result)->toBe([['a' => 1, 'b' => 'c'], 'd']);
 });
 
-test('parse_json filter parses simple JSON object', function () {
+test('parse_json filter parses simple JSON object', function (): void {
     $filter = new Data();
     $jsonString = '{"name":"John","age":30,"city":"New York"}';
 
@@ -294,7 +294,7 @@ test('parse_json filter parses simple JSON object', function () {
     expect($result)->toBe(['name' => 'John', 'age' => 30, 'city' => 'New York']);
 });
 
-test('parse_json filter parses JSON array', function () {
+test('parse_json filter parses JSON array', function (): void {
     $filter = new Data();
     $jsonString = '["apple","banana","cherry"]';
 
@@ -302,7 +302,7 @@ test('parse_json filter parses JSON array', function () {
     expect($result)->toBe(['apple', 'banana', 'cherry']);
 });
 
-test('parse_json filter parses nested JSON structure', function () {
+test('parse_json filter parses nested JSON structure', function (): void {
     $filter = new Data();
     $jsonString = '{"users":[{"id":1,"name":"Alice"},{"id":2,"name":"Bob"}],"total":2}';
 
@@ -316,7 +316,7 @@ test('parse_json filter parses nested JSON structure', function () {
     ]);
 });
 
-test('parse_json filter handles primitive values', function () {
+test('parse_json filter handles primitive values', function (): void {
     $filter = new Data();
 
     expect($filter->parse_json('"hello"'))->toBe('hello');

tests/Unit/Liquid/Filters/DateTest.php

@@ -3,28 +3,28 @@
 use App\Liquid\Filters\Date;
 use Carbon\Carbon;
 
-test('days_ago filter returns correct date', function () {
+test('days_ago filter returns correct date', function (): void {
     $filter = new Date();
     $threeDaysAgo = Carbon::now()->subDays(3)->toDateString();
 
     expect($filter->days_ago(3))->toBe($threeDaysAgo);
 });
 
-test('days_ago filter handles string input', function () {
+test('days_ago filter handles string input', function (): void {
     $filter = new Date();
     $fiveDaysAgo = Carbon::now()->subDays(5)->toDateString();
 
     expect($filter->days_ago('5'))->toBe($fiveDaysAgo);
 });
 
-test('days_ago filter with zero days returns today', function () {
+test('days_ago filter with zero days returns today', function (): void {
     $filter = new Date();
     $today = Carbon::now()->toDateString();
 
     expect($filter->days_ago(0))->toBe($today);
 });
 
-test('days_ago filter with large number works correctly', function () {
+test('days_ago filter with large number works correctly', function (): void {
     $filter = new Date();
     $hundredDaysAgo = Carbon::now()->subDays(100)->toDateString();
 

tests/Unit/Liquid/Filters/LocalizationTest.php

@@ -2,7 +2,7 @@
 
 use App\Liquid\Filters\Localization;
 
-test('l_date formats date with default format', function () {
+test('l_date formats date with default format', function (): void {
     $filter = new Localization();
     $date = '2025-01-11';
 
@@ -15,7 +15,7 @@ test('l_date formats date with default format', function () {
     expect($result)->toContain('11');
 });
 
-test('l_date formats date with custom format', function () {
+test('l_date formats date with custom format', function (): void {
     $filter = new Localization();
     $date = '2025-01-11';
 
@@ -27,7 +27,7 @@ test('l_date formats date with custom format', function () {
     // We can't check for 'Jan' specifically as it might be localized
 });
 
-test('l_date handles DateTime objects', function () {
+test('l_date handles DateTime objects', function (): void {
     $filter = new Localization();
     $date = new DateTimeImmutable('2025-01-11');
 
@@ -36,32 +36,32 @@ test('l_date handles DateTime objects', function () {
     expect($result)->toContain('2025-01-11');
 });
 
-test('l_word translates common words', function () {
+test('l_word translates common words', function (): void {
     $filter = new Localization();
 
     expect($filter->l_word('today', 'de'))->toBe('heute');
 });
 
-test('l_word returns original word if no translation exists', function () {
+test('l_word returns original word if no translation exists', function (): void {
     $filter = new Localization();
 
     expect($filter->l_word('hello', 'es-ES'))->toBe('hello');
     expect($filter->l_word('world', 'ko'))->toBe('world');
 });
 
-test('l_word is case-insensitive', function () {
+test('l_word is case-insensitive', function (): void {
     $filter = new Localization();
 
     expect($filter->l_word('TODAY', 'de'))->toBe('heute');
 });
 
-test('l_word returns original word for unknown locales', function () {
+test('l_word returns original word for unknown locales', function (): void {
     $filter = new Localization();
 
     expect($filter->l_word('today', 'unknown-locale'))->toBe('today');
 });
 
-test('l_date handles locale parameter', function () {
+test('l_date handles locale parameter', function (): void {
     $filter = new Localization();
     $date = '2025-01-11';
 
@@ -73,7 +73,7 @@ test('l_date handles locale parameter', function () {
     expect($result)->toContain('11');
 });
 
-test('l_date handles null locale parameter', function () {
+test('l_date handles null locale parameter', function (): void {
     $filter = new Localization();
     $date = '2025-01-11';
 
@@ -85,7 +85,7 @@ test('l_date handles null locale parameter', function () {
     expect($result)->toContain('11');
 });
 
-test('l_date handles different date formats with locale', function () {
+test('l_date handles different date formats with locale', function (): void {
     $filter = new Localization();
     $date = '2025-01-11';
 
@@ -96,7 +96,7 @@ test('l_date handles different date formats with locale', function () {
     expect($result)->toContain('11');
 });
 
-test('l_date handles DateTimeInterface objects with locale', function () {
+test('l_date handles DateTimeInterface objects with locale', function (): void {
     $filter = new Localization();
     $date = new DateTimeImmutable('2025-01-11');
 
@@ -108,29 +108,29 @@ test('l_date handles DateTimeInterface objects with locale', function () {
     expect($result)->toContain('11');
 });
 
-test('l_date handles invalid date gracefully', function () {
+test('l_date handles invalid date gracefully', function (): void {
     $filter = new Localization();
     $invalidDate = 'invalid-date';
 
     // This should throw an exception or return a default value
     // The exact behavior depends on Carbon's implementation
-    expect(fn () => $filter->l_date($invalidDate))->toThrow(Exception::class);
+    expect(fn (): string => $filter->l_date($invalidDate))->toThrow(Exception::class);
 });
 
-test('l_word handles empty string', function () {
+test('l_word handles empty string', function (): void {
     $filter = new Localization();
 
     expect($filter->l_word('', 'de'))->toBe('');
 });
 
-test('l_word handles special characters', function () {
+test('l_word handles special characters', function (): void {
     $filter = new Localization();
 
     // Test with a word that has special characters
     expect($filter->l_word('café', 'de'))->toBe('café');
 });
 
-test('l_word handles numeric strings', function () {
+test('l_word handles numeric strings', function (): void {
     $filter = new Localization();
 
     expect($filter->l_word('123', 'de'))->toBe('123');

tests/Unit/Liquid/Filters/NumbersTest.php

@@ -2,7 +2,7 @@
 
 use App\Liquid\Filters\Numbers;
 
-test('number_with_delimiter formats numbers with commas by default', function () {
+test('number_with_delimiter formats numbers with commas by default', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_with_delimiter(1234))->toBe('1,234');
@@ -10,21 +10,21 @@ test('number_with_delimiter formats numbers with commas by default', function ()
     expect($filter->number_with_delimiter(0))->toBe('0');
 });
 
-test('number_with_delimiter handles custom delimiters', function () {
+test('number_with_delimiter handles custom delimiters', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_with_delimiter(1234, '.'))->toBe('1.234');
     expect($filter->number_with_delimiter(1000000, ' '))->toBe('1 000 000');
 });
 
-test('number_with_delimiter handles decimal values with custom separators', function () {
+test('number_with_delimiter handles decimal values with custom separators', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_with_delimiter(1234.57, ' ', ','))->toBe('1 234,57');
     expect($filter->number_with_delimiter(1234.5, '.', ','))->toBe('1.234,50');
 });
 
-test('number_to_currency formats numbers with dollar sign by default', function () {
+test('number_to_currency formats numbers with dollar sign by default', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_to_currency(1234))->toBe('$1,234');
@@ -32,14 +32,14 @@ test('number_to_currency formats numbers with dollar sign by default', function
     expect($filter->number_to_currency(0))->toBe('$0');
 });
 
-test('number_to_currency handles custom currency symbols', function () {
+test('number_to_currency handles custom currency symbols', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_to_currency(1234, '£'))->toBe('£1,234');
     expect($filter->number_to_currency(152350.69, '€'))->toBe('€152,350.69');
 });
 
-test('number_to_currency handles custom delimiters and separators', function () {
+test('number_to_currency handles custom delimiters and separators', function (): void {
     $filter = new Numbers();
 
     $result1 = $filter->number_to_currency(1234.57, '£', '.', ',');
@@ -51,56 +51,56 @@ test('number_to_currency handles custom delimiters and separators', function ()
     expect($result2)->toContain('€');
 });
 
-test('number_with_delimiter handles string numbers', function () {
+test('number_with_delimiter handles string numbers', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_with_delimiter('1234'))->toBe('1,234');
     expect($filter->number_with_delimiter('1234.56'))->toBe('1,234.56');
 });
 
-test('number_with_delimiter handles negative numbers', function () {
+test('number_with_delimiter handles negative numbers', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_with_delimiter(-1234))->toBe('-1,234');
     expect($filter->number_with_delimiter(-1234.56))->toBe('-1,234.56');
 });
 
-test('number_with_delimiter handles zero', function () {
+test('number_with_delimiter handles zero', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_with_delimiter(0))->toBe('0');
     expect($filter->number_with_delimiter(0.0))->toBe('0.00');
 });
 
-test('number_with_delimiter handles very small numbers', function () {
+test('number_with_delimiter handles very small numbers', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_with_delimiter(0.01))->toBe('0.01');
     expect($filter->number_with_delimiter(0.001))->toBe('0.00');
 });
 
-test('number_to_currency handles string numbers', function () {
+test('number_to_currency handles string numbers', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_to_currency('1234'))->toBe('$1,234');
     expect($filter->number_to_currency('1234.56'))->toBe('$1,234.56');
 });
 
-test('number_to_currency handles negative numbers', function () {
+test('number_to_currency handles negative numbers', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_to_currency(-1234))->toBe('-$1,234');
     expect($filter->number_to_currency(-1234.56))->toBe('-$1,234.56');
 });
 
-test('number_to_currency handles zero', function () {
+test('number_to_currency handles zero', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_to_currency(0))->toBe('$0');
     expect($filter->number_to_currency(0.0))->toBe('$0.00');
 });
 
-test('number_to_currency handles currency code conversion', function () {
+test('number_to_currency handles currency code conversion', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_to_currency(1234, '$'))->toBe('$1,234');
@@ -108,7 +108,7 @@ test('number_to_currency handles currency code conversion', function () {
     expect($filter->number_to_currency(1234, '£'))->toBe('£1,234');
 });
 
-test('number_to_currency handles German locale formatting', function () {
+test('number_to_currency handles German locale formatting', function (): void {
     $filter = new Numbers();
 
     // When delimiter is '.' and separator is ',', it should use German locale
@@ -116,21 +116,21 @@ test('number_to_currency handles German locale formatting', function () {
     expect($result)->toContain('1.234,56');
 });
 
-test('number_with_delimiter handles different decimal separators', function () {
+test('number_with_delimiter handles different decimal separators', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_with_delimiter(1234.56, ',', ','))->toBe('1,234,56');
     expect($filter->number_with_delimiter(1234.56, ' ', ','))->toBe('1 234,56');
 });
 
-test('number_to_currency handles very large numbers', function () {
+test('number_to_currency handles very large numbers', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_to_currency(1000000))->toBe('$1,000,000');
     expect($filter->number_to_currency(1000000.50))->toBe('$1,000,000.50');
 });
 
-test('number_with_delimiter handles very large numbers', function () {
+test('number_with_delimiter handles very large numbers', function (): void {
     $filter = new Numbers();
 
     expect($filter->number_with_delimiter(1000000))->toBe('1,000,000');

tests/Unit/Liquid/Filters/StringMarkupTest.php

@@ -2,35 +2,35 @@
 
 use App\Liquid\Filters\StringMarkup;
 
-test('pluralize returns singular form with count 1', function () {
+test('pluralize returns singular form with count 1', function (): void {
     $filter = new StringMarkup();
 
     expect($filter->pluralize('book', 1))->toBe('1 book');
     expect($filter->pluralize('person', 1))->toBe('1 person');
 });
 
-test('pluralize returns plural form with count greater than 1', function () {
+test('pluralize returns plural form with count greater than 1', function (): void {
     $filter = new StringMarkup();
 
     expect($filter->pluralize('book', 2))->toBe('2 books');
     expect($filter->pluralize('person', 4))->toBe('4 people');
 });
 
-test('pluralize handles irregular plurals correctly', function () {
+test('pluralize handles irregular plurals correctly', function (): void {
     $filter = new StringMarkup();
 
     expect($filter->pluralize('child', 3))->toBe('3 children');
     expect($filter->pluralize('sheep', 5))->toBe('5 sheep');
 });
 
-test('pluralize uses default count of 2 when not specified', function () {
+test('pluralize uses default count of 2 when not specified', function (): void {
     $filter = new StringMarkup();
 
     expect($filter->pluralize('book'))->toBe('2 books');
     expect($filter->pluralize('person'))->toBe('2 people');
 });
 
-test('markdown_to_html converts basic markdown to HTML', function () {
+test('markdown_to_html converts basic markdown to HTML', function (): void {
     $filter = new StringMarkup();
     $markdown = 'This is *italic* and **bold**.';
 
@@ -42,7 +42,7 @@ test('markdown_to_html converts basic markdown to HTML', function () {
     expect($result)->toContain('<strong>bold</strong>');
 });
 
-test('markdown_to_html converts links correctly', function () {
+test('markdown_to_html converts links correctly', function (): void {
     $filter = new StringMarkup();
     $markdown = 'This is [a link](https://example.com).';
 
@@ -51,7 +51,7 @@ test('markdown_to_html converts links correctly', function () {
     expect($result)->toContain('<a href="https://example.com">a link</a>');
 });
 
-test('markdown_to_html handles fallback when Parsedown is not available', function () {
+test('markdown_to_html handles fallback when Parsedown is not available', function (): void {
     // Create a mock that simulates Parsedown not being available
     $filter = new class extends StringMarkup
     {
@@ -68,28 +68,28 @@ test('markdown_to_html handles fallback when Parsedown is not available', functi
     expect($result)->toBe('This is *italic* and [a link](https://example.com).');
 });
 
-test('strip_html removes HTML tags', function () {
+test('strip_html removes HTML tags', function (): void {
     $filter = new StringMarkup();
     $html = '<p>This is <strong>bold</strong> and <em>italic</em>.</p>';
 
     expect($filter->strip_html($html))->toBe('This is bold and italic.');
 });
 
-test('strip_html preserves text content', function () {
+test('strip_html preserves text content', function (): void {
     $filter = new StringMarkup();
     $html = '<div>Hello, <span>world</span>!</div>';
 
     expect($filter->strip_html($html))->toBe('Hello, world!');
 });
 
-test('strip_html handles nested tags', function () {
+test('strip_html handles nested tags', function (): void {
     $filter = new StringMarkup();
     $html = '<div><p>Paragraph <strong>with <em>nested</em> tags</strong>.</p></div>';
 
     expect($filter->strip_html($html))->toBe('Paragraph with nested tags.');
 });
 
-test('markdown_to_html handles CommonMarkException gracefully', function () {
+test('markdown_to_html handles CommonMarkException gracefully', function (): void {
     $filter = new StringMarkup();
 
     // Create a mock that throws CommonMarkException
@@ -113,7 +113,7 @@ test('markdown_to_html handles CommonMarkException gracefully', function () {
     expect($result)->toBeNull();
 });
 
-test('markdown_to_html handles empty string', function () {
+test('markdown_to_html handles empty string', function (): void {
     $filter = new StringMarkup();
 
     $result = $filter->markdown_to_html('');
@@ -121,7 +121,7 @@ test('markdown_to_html handles empty string', function () {
     expect($result)->toBe('');
 });
 
-test('markdown_to_html handles complex markdown', function () {
+test('markdown_to_html handles complex markdown', function (): void {
     $filter = new StringMarkup();
     $markdown = "# Heading\n\nThis is a paragraph with **bold** and *italic* text.\n\n- List item 1\n- List item 2\n\n[Link](https://example.com)";
 
@@ -135,34 +135,34 @@ test('markdown_to_html handles complex markdown', function () {
     expect($result)->toContain('<a href="https://example.com">Link</a>');
 });
 
-test('strip_html handles empty string', function () {
+test('strip_html handles empty string', function (): void {
     $filter = new StringMarkup();
 
     expect($filter->strip_html(''))->toBe('');
 });
 
-test('strip_html handles string without HTML tags', function () {
+test('strip_html handles string without HTML tags', function (): void {
     $filter = new StringMarkup();
     $text = 'This is plain text without any HTML tags.';
 
     expect($filter->strip_html($text))->toBe($text);
 });
 
-test('strip_html handles self-closing tags', function () {
+test('strip_html handles self-closing tags', function (): void {
     $filter = new StringMarkup();
     $html = '<p>Text with <br/> line break and <hr/> horizontal rule.</p>';
 
     expect($filter->strip_html($html))->toBe('Text with  line break and  horizontal rule.');
 });
 
-test('pluralize handles zero count', function () {
+test('pluralize handles zero count', function (): void {
     $filter = new StringMarkup();
 
     expect($filter->pluralize('book', 0))->toBe('0 books');
     expect($filter->pluralize('person', 0))->toBe('0 people');
 });
 
-test('pluralize handles negative count', function () {
+test('pluralize handles negative count', function (): void {
     $filter = new StringMarkup();
 
     expect($filter->pluralize('book', -1))->toBe('-1 book');

tests/Unit/Liquid/Filters/UniquenessTest.php

@@ -2,7 +2,7 @@
 
 use App\Liquid\Filters\Uniqueness;
 
-test('append_random appends a random string with 4 characters', function () {
+test('append_random appends a random string with 4 characters', function (): void {
     $filter = new Uniqueness();
     $result = $filter->append_random('chart-');
 

tests/Unit/Models/DeviceLogTest.php

@@ -6,7 +6,7 @@ use Illuminate\Foundation\Testing\RefreshDatabase;
 
 uses(RefreshDatabase::class);
 
-test('device log belongs to a device', function () {
+test('device log belongs to a device', function (): void {
     $device = Device::factory()->create();
     $log = DeviceLog::factory()->create(['device_id' => $device->id]);
 
@@ -14,7 +14,7 @@ test('device log belongs to a device', function () {
         ->and($log->device->id)->toBe($device->id);
 });
 
-test('device log casts log_entry to array', function () {
+test('device log casts log_entry to array', function (): void {
     Device::factory()->create();
     $log = DeviceLog::factory()->create([
         'log_entry' => [
@@ -29,7 +29,7 @@ test('device log casts log_entry to array', function () {
         ->and($log->log_entry['level'])->toBe('info');
 });
 
-test('device log casts device_timestamp to datetime', function () {
+test('device log casts device_timestamp to datetime', function (): void {
     Device::factory()->create();
     $timestamp = now();
     $log = DeviceLog::factory()->create([
@@ -40,7 +40,7 @@ test('device log casts device_timestamp to datetime', function () {
         ->and($log->device_timestamp->timestamp)->toBe($timestamp->timestamp);
 });
 
-test('device log factory creates valid data', function () {
+test('device log factory creates valid data', function (): void {
     Device::factory()->create();
     $log = DeviceLog::factory()->create();
 
@@ -50,7 +50,7 @@ test('device log factory creates valid data', function () {
         ->and($log->log_entry)->toHaveKeys(['creation_timestamp', 'device_status_stamp', 'log_id', 'log_message', 'log_codeline', 'log_sourcefile', 'additional_info']);
 });
 
-test('device log can be created with minimal required fields', function () {
+test('device log can be created with minimal required fields', function (): void {
     $device = Device::factory()->create();
     $log = DeviceLog::create([
         'device_id' => $device->id,

tests/Unit/Models/DeviceModelTest.php

@@ -4,7 +4,7 @@ declare(strict_types=1);
 
 use App\Models\DeviceModel;
 
-test('device model has required attributes', function () {
+test('device model has required attributes', function (): void {
     $deviceModel = DeviceModel::factory()->create([
         'name' => 'Test Model',
         'width' => 800,
@@ -28,7 +28,7 @@ test('device model has required attributes', function () {
     expect($deviceModel->offset_y)->toBe(0);
 });
 
-test('device model casts attributes correctly', function () {
+test('device model casts attributes correctly', function (): void {
     $deviceModel = DeviceModel::factory()->create([
         'width' => '800',
         'height' => '480',
@@ -50,61 +50,61 @@ test('device model casts attributes correctly', function () {
     expect($deviceModel->offset_y)->toBeInt();
 });
 
-test('get color depth attribute returns correct format for bit depth 2', function () {
+test('get color depth attribute returns correct format for bit depth 2', function (): void {
     $deviceModel = DeviceModel::factory()->create(['bit_depth' => 2]);
 
     expect($deviceModel->getColorDepthAttribute())->toBe('2bit');
 });
 
-test('get color depth attribute returns correct format for bit depth 4', function () {
+test('get color depth attribute returns correct format for bit depth 4', function (): void {
     $deviceModel = DeviceModel::factory()->create(['bit_depth' => 4]);
 
     expect($deviceModel->getColorDepthAttribute())->toBe('4bit');
 });
 
-test('get color depth attribute returns 4bit for bit depth greater than 4', function () {
+test('get color depth attribute returns 4bit for bit depth greater than 4', function (): void {
     $deviceModel = DeviceModel::factory()->create(['bit_depth' => 8]);
 
     expect($deviceModel->getColorDepthAttribute())->toBe('4bit');
 });
 
-test('get color depth attribute returns null when bit depth is null', function () {
+test('get color depth attribute returns null when bit depth is null', function (): void {
     $deviceModel = new DeviceModel(['bit_depth' => null]);
 
     expect($deviceModel->getColorDepthAttribute())->toBeNull();
 });
 
-test('get scale level attribute returns null for width 800 or less', function () {
+test('get scale level attribute returns null for width 800 or less', function (): void {
     $deviceModel = DeviceModel::factory()->create(['width' => 800]);
 
     expect($deviceModel->getScaleLevelAttribute())->toBeNull();
 });
 
-test('get scale level attribute returns large for width between 801 and 1000', function () {
+test('get scale level attribute returns large for width between 801 and 1000', function (): void {
     $deviceModel = DeviceModel::factory()->create(['width' => 900]);
 
     expect($deviceModel->getScaleLevelAttribute())->toBe('large');
 });
 
-test('get scale level attribute returns xlarge for width between 1001 and 1400', function () {
+test('get scale level attribute returns xlarge for width between 1001 and 1400', function (): void {
     $deviceModel = DeviceModel::factory()->create(['width' => 1200]);
 
     expect($deviceModel->getScaleLevelAttribute())->toBe('xlarge');
 });
 
-test('get scale level attribute returns xxlarge for width greater than 1400', function () {
+test('get scale level attribute returns xxlarge for width greater than 1400', function (): void {
     $deviceModel = DeviceModel::factory()->create(['width' => 1500]);
 
     expect($deviceModel->getScaleLevelAttribute())->toBe('xxlarge');
 });
 
-test('get scale level attribute returns null when width is null', function () {
+test('get scale level attribute returns null when width is null', function (): void {
     $deviceModel = new DeviceModel(['width' => null]);
 
     expect($deviceModel->getScaleLevelAttribute())->toBeNull();
 });
 
-test('device model factory creates valid data', function () {
+test('device model factory creates valid data', function (): void {
     $deviceModel = DeviceModel::factory()->create();
 
     expect($deviceModel->name)->not->toBeEmpty();

tests/Unit/Models/PlaylistItemTest.php

@@ -4,7 +4,7 @@ use App\Models\Playlist;
 use App\Models\PlaylistItem;
 use App\Models\Plugin;
 
-test('playlist item belongs to playlist', function () {
+test('playlist item belongs to playlist', function (): void {
     $playlist = Playlist::factory()->create();
     $playlistItem = PlaylistItem::factory()->create(['playlist_id' => $playlist->id]);
 
@@ -13,7 +13,7 @@ test('playlist item belongs to playlist', function () {
         ->id->toBe($playlist->id);
 });
 
-test('playlist item belongs to plugin', function () {
+test('playlist item belongs to plugin', function (): void {
     $plugin = Plugin::factory()->create();
     $playlistItem = PlaylistItem::factory()->create(['plugin_id' => $plugin->id]);
 
@@ -22,7 +22,7 @@ test('playlist item belongs to plugin', function () {
         ->id->toBe($plugin->id);
 });
 
-test('playlist item can check if it is a mashup', function () {
+test('playlist item can check if it is a mashup', function (): void {
     $plugin = Plugin::factory()->create();
     $regularItem = PlaylistItem::factory()->create([
         'mashup' => null,
@@ -44,7 +44,7 @@ test('playlist item can check if it is a mashup', function () {
         ->and($mashupItem->isMashup())->toBeTrue();
 });
 
-test('playlist item can get mashup name', function () {
+test('playlist item can get mashup name', function (): void {
     $plugin1 = Plugin::factory()->create();
     $plugin2 = Plugin::factory()->create();
     $mashupItem = PlaylistItem::factory()->create([
@@ -59,7 +59,7 @@ test('playlist item can get mashup name', function () {
     expect($mashupItem->getMashupName())->toBe('Test Mashup');
 });
 
-test('playlist item can get mashup layout type', function () {
+test('playlist item can get mashup layout type', function (): void {
     $plugin1 = Plugin::factory()->create();
     $plugin2 = Plugin::factory()->create();
     $mashupItem = PlaylistItem::factory()->create([
@@ -74,7 +74,7 @@ test('playlist item can get mashup layout type', function () {
     expect($mashupItem->getMashupLayoutType())->toBe('1Lx1R');
 });
 
-test('playlist item can get mashup plugin ids', function () {
+test('playlist item can get mashup plugin ids', function (): void {
     $plugin1 = Plugin::factory()->create();
     $plugin2 = Plugin::factory()->create();
     $mashupItem = PlaylistItem::factory()->create([
@@ -89,7 +89,7 @@ test('playlist item can get mashup plugin ids', function () {
     expect($mashupItem->getMashupPluginIds())->toBe([$plugin1->id, $plugin2->id]);
 });
 
-test('playlist item can get required plugin count for different layouts', function () {
+test('playlist item can get required plugin count for different layouts', function (): void {
     $layouts = [
         '1Lx1R' => 2,
         '1Tx1B' => 2,
@@ -117,7 +117,7 @@ test('playlist item can get required plugin count for different layouts', functi
     }
 });
 
-test('playlist item can get layout type', function () {
+test('playlist item can get layout type', function (): void {
     $layoutTypes = [
         '1Lx1R' => 'vertical',
         '1Lx2R' => 'vertical',
@@ -144,7 +144,7 @@ test('playlist item can get layout type', function () {
     }
 });
 
-test('playlist item can get layout size for different positions', function () {
+test('playlist item can get layout size for different positions', function (): void {
     $plugin1 = Plugin::factory()->create();
     $plugin2 = Plugin::factory()->create();
     $plugin3 = Plugin::factory()->create();
@@ -163,7 +163,7 @@ test('playlist item can get layout size for different positions', function () {
         ->and($mashupItem->getLayoutSize(2))->toBe('half_vertical');
 });
 
-test('playlist item can get available layouts', function () {
+test('playlist item can get available layouts', function (): void {
     $layouts = PlaylistItem::getAvailableLayouts();
 
     expect($layouts)->toBeArray()
@@ -171,7 +171,7 @@ test('playlist item can get available layouts', function () {
         ->and($layouts['1Lx1R'])->toBe('1 Left - 1 Right (2 plugins)');
 });
 
-test('playlist item can get required plugin count for layout', function () {
+test('playlist item can get required plugin count for layout', function (): void {
     $layouts = [
         '1Lx1R' => 2,
         '1Tx1B' => 2,
@@ -187,7 +187,7 @@ test('playlist item can get required plugin count for layout', function () {
     }
 });
 
-test('playlist item can create mashup', function () {
+test('playlist item can create mashup', function (): void {
     $playlist = Playlist::factory()->create();
     $plugins = Plugin::factory()->count(3)->create();
     $pluginIds = $plugins->pluck('id')->toArray();

tests/Unit/Models/PlaylistTest.php

@@ -4,7 +4,7 @@ use App\Models\Device;
 use App\Models\Playlist;
 use App\Models\PlaylistItem;
 
-test('playlist has required attributes', function () {
+test('playlist has required attributes', function (): void {
     $playlist = Playlist::factory()->create([
         'name' => 'Test Playlist',
         'is_active' => true,
@@ -21,7 +21,7 @@ test('playlist has required attributes', function () {
         ->active_until->format('H:i')->toBe('17:00');
 });
 
-test('playlist belongs to device', function () {
+test('playlist belongs to device', function (): void {
     $device = Device::factory()->create();
     $playlist = Playlist::factory()->create(['device_id' => $device->id]);
 
@@ -30,7 +30,7 @@ test('playlist belongs to device', function () {
         ->id->toBe($device->id);
 });
 
-test('playlist has many items', function () {
+test('playlist has many items', function (): void {
     $playlist = Playlist::factory()->create();
     $items = PlaylistItem::factory()->count(3)->create(['playlist_id' => $playlist->id]);
 
@@ -39,7 +39,7 @@ test('playlist has many items', function () {
         ->each->toBeInstanceOf(PlaylistItem::class);
 });
 
-test('getNextPlaylistItem returns null when playlist is inactive', function () {
+test('getNextPlaylistItem returns null when playlist is inactive', function (): void {
     $playlist = Playlist::factory()->create(['is_active' => false]);
 
     expect($playlist->getNextPlaylistItem())->toBeNull();

tests/Unit/Models/PluginTest.php

@@ -5,7 +5,7 @@ use Illuminate\Support\Facades\Http;
 
 uses(Illuminate\Foundation\Testing\RefreshDatabase::class);
 
-test('plugin has required attributes', function () {
+test('plugin has required attributes', function (): void {
     $plugin = Plugin::factory()->create([
         'name' => 'Test Plugin',
         'data_payload' => ['key' => 'value'],
@@ -18,7 +18,7 @@ test('plugin has required attributes', function () {
         ->uuid->toMatch('/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/');
 });
 
-test('plugin automatically generates uuid on creation', function () {
+test('plugin automatically generates uuid on creation', function (): void {
     $plugin = Plugin::factory()->create();
 
     expect($plugin->uuid)
@@ -26,14 +26,14 @@ test('plugin automatically generates uuid on creation', function () {
         ->toMatch('/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/');
 });
 
-test('plugin can have custom uuid', function () {
+test('plugin can have custom uuid', function (): void {
     $uuid = Illuminate\Support\Str::uuid();
     $plugin = Plugin::factory()->create(['uuid' => $uuid]);
 
     expect($plugin->uuid)->toBe($uuid);
 });
 
-test('plugin data_payload is cast to array', function () {
+test('plugin data_payload is cast to array', function (): void {
     $data = ['key' => 'value'];
     $plugin = Plugin::factory()->create(['data_payload' => $data]);
 
@@ -42,7 +42,7 @@ test('plugin data_payload is cast to array', function () {
         ->toBe($data);
 });
 
-test('plugin can have polling body for POST requests', function () {
+test('plugin can have polling body for POST requests', function (): void {
     $plugin = Plugin::factory()->create([
         'polling_verb' => 'post',
         'polling_body' => '{"query": "query { user { id name } }"}',
@@ -51,7 +51,7 @@ test('plugin can have polling body for POST requests', function () {
     expect($plugin->polling_body)->toBe('{"query": "query { user { id name } }"}');
 });
 
-test('updateDataPayload sends POST request with body when polling_verb is post', function () {
+test('updateDataPayload sends POST request with body when polling_verb is post', function (): void {
     Http::fake([
         'https://example.com/api' => Http::response(['success' => true], 200),
     ]);
@@ -65,14 +65,12 @@ test('updateDataPayload sends POST request with body when polling_verb is post',
 
     $plugin->updateDataPayload();
 
-    Http::assertSent(function ($request) {
-        return $request->url() === 'https://example.com/api' &&
+    Http::assertSent(fn ($request): bool => $request->url() === 'https://example.com/api' &&
            $request->method() === 'POST' &&
-               $request->body() === '{"query": "query { user { id name } }"}';
-    });
+           $request->body() === '{"query": "query { user { id name } }"}');
 });
 
-test('updateDataPayload handles multiple URLs with IDX_ prefixes', function () {
+test('updateDataPayload handles multiple URLs with IDX_ prefixes', function (): void {
     $plugin = Plugin::factory()->create([
         'data_strategy' => 'polling',
         'polling_url' => "https://api1.example.com/data\nhttps://api2.example.com/weather\nhttps://api3.example.com/news",
@@ -99,7 +97,7 @@ test('updateDataPayload handles multiple URLs with IDX_ prefixes', function () {
     expect($plugin->data_payload['IDX_2'])->toBe(['headline' => 'test']);
 });
 
-test('updateDataPayload handles single URL without nesting', function () {
+test('updateDataPayload handles single URL without nesting', function (): void {
     $plugin = Plugin::factory()->create([
         'data_strategy' => 'polling',
         'polling_url' => 'https://api.example.com/data',
@@ -120,7 +118,7 @@ test('updateDataPayload handles single URL without nesting', function () {
     expect($plugin->data_payload)->not->toHaveKey('IDX_0');
 });
 
-test('updateDataPayload resolves Liquid variables in polling_header', function () {
+test('updateDataPayload resolves Liquid variables in polling_header', function (): void {
     $plugin = Plugin::factory()->create([
         'data_strategy' => 'polling',
         'polling_url' => 'https://api.example.com/data',
@@ -139,15 +137,13 @@ test('updateDataPayload resolves Liquid variables in polling_header', function (
 
     $plugin->updateDataPayload();
 
-    Http::assertSent(function ($request) {
-        return $request->url() === 'https://api.example.com/data' &&
+    Http::assertSent(fn ($request): bool => $request->url() === 'https://api.example.com/data' &&
            $request->method() === 'GET' &&
            $request->header('Authorization')[0] === 'Bearer test123' &&
-               $request->header('X-Custom-Header')[0] === 'custom_header_value';
-    });
+           $request->header('X-Custom-Header')[0] === 'custom_header_value');
 });
 
-test('updateDataPayload resolves Liquid variables in polling_body', function () {
+test('updateDataPayload resolves Liquid variables in polling_body', function (): void {
     $plugin = Plugin::factory()->create([
         'data_strategy' => 'polling',
         'polling_url' => 'https://api.example.com/data',
@@ -166,7 +162,7 @@ test('updateDataPayload resolves Liquid variables in polling_body', function ()
 
     $plugin->updateDataPayload();
 
-    Http::assertSent(function ($request) {
+    Http::assertSent(function ($request): bool {
         $expectedBody = '{"query": "query { user { id name } }", "api_key": "test123", "user_id": "456"}';
 
         return $request->url() === 'https://api.example.com/data' &&
@@ -175,7 +171,7 @@ test('updateDataPayload resolves Liquid variables in polling_body', function ()
     });
 });
 
-test('webhook plugin is stale if webhook event occurred', function () {
+test('webhook plugin is stale if webhook event occurred', function (): void {
     $plugin = Plugin::factory()->create([
         'data_strategy' => 'webhook',
         'data_payload_updated_at' => now()->subMinutes(10),
@@ -186,7 +182,7 @@ test('webhook plugin is stale if webhook event occurred', function () {
 
 });
 
-test('webhook plugin data not stale if no webhook event occurred for 1 hour', function () {
+test('webhook plugin data not stale if no webhook event occurred for 1 hour', function (): void {
     $plugin = Plugin::factory()->create([
         'data_strategy' => 'webhook',
         'data_payload_updated_at' => now()->subMinutes(60),
@@ -197,7 +193,7 @@ test('webhook plugin data not stale if no webhook event occurred for 1 hour', fu
 
 });
 
-test('plugin configuration is cast to array', function () {
+test('plugin configuration is cast to array', function (): void {
     $config = ['timezone' => 'UTC', 'refresh_interval' => 30];
     $plugin = Plugin::factory()->create(['configuration' => $config]);
 
@@ -206,7 +202,7 @@ test('plugin configuration is cast to array', function () {
         ->toBe($config);
 });
 
-test('plugin can get configuration value by key', function () {
+test('plugin can get configuration value by key', function (): void {
     $config = ['timezone' => 'UTC', 'refresh_interval' => 30];
     $plugin = Plugin::factory()->create(['configuration' => $config]);
 
@@ -215,7 +211,7 @@ test('plugin can get configuration value by key', function () {
     expect($plugin->getConfiguration('nonexistent', 'default'))->toBe('default');
 });
 
-test('plugin configuration template is cast to array', function () {
+test('plugin configuration template is cast to array', function (): void {
     $template = [
         'custom_fields' => [
             [
@@ -233,7 +229,7 @@ test('plugin configuration template is cast to array', function () {
         ->toBe($template);
 });
 
-test('resolveLiquidVariables resolves variables from configuration', function () {
+test('resolveLiquidVariables resolves variables from configuration', function (): void {
     $plugin = Plugin::factory()->create([
         'configuration' => [
             'api_key' => '12345',
@@ -263,7 +259,7 @@ test('resolveLiquidVariables resolves variables from configuration', function ()
     expect($result)->toBe('High');
 });
 
-test('resolveLiquidVariables handles invalid Liquid syntax gracefully', function () {
+test('resolveLiquidVariables handles invalid Liquid syntax gracefully', function (): void {
     $plugin = Plugin::factory()->create([
         'configuration' => [
             'api_key' => '12345',
@@ -277,7 +273,7 @@ test('resolveLiquidVariables handles invalid Liquid syntax gracefully', function
         ->toThrow(Keepsuit\Liquid\Exceptions\SyntaxException::class);
 });
 
-test('plugin can extract default values from custom fields configuration template', function () {
+test('plugin can extract default values from custom fields configuration template', function (): void {
     $configurationTemplate = [
         'custom_fields' => [
             [
@@ -323,7 +319,7 @@ test('plugin can extract default values from custom fields configuration templat
     expect($plugin->getConfiguration('timezone'))->toBeNull();
 });
 
-test('resolveLiquidVariables resolves configuration variables correctly', function () {
+test('resolveLiquidVariables resolves configuration variables correctly', function (): void {
     $plugin = Plugin::factory()->create([
         'configuration' => [
             'Latitude' => '48.2083',
@@ -338,7 +334,7 @@ test('resolveLiquidVariables resolves configuration variables correctly', functi
     expect($plugin->resolveLiquidVariables($template))->toBe($expected);
 });
 
-test('resolveLiquidVariables handles missing variables gracefully', function () {
+test('resolveLiquidVariables handles missing variables gracefully', function (): void {
     $plugin = Plugin::factory()->create([
         'configuration' => [
             'Latitude' => '48.2083',
@@ -351,7 +347,7 @@ test('resolveLiquidVariables handles missing variables gracefully', function ()
     expect($plugin->resolveLiquidVariables($template))->toBe($expected);
 });
 
-test('resolveLiquidVariables handles empty configuration', function () {
+test('resolveLiquidVariables handles empty configuration', function (): void {
     $plugin = Plugin::factory()->create([
         'configuration' => [],
     ]);

tests/Unit/Notifications/BatteryLowTest.php

@@ -8,14 +8,14 @@ use App\Notifications\BatteryLow;
 use App\Notifications\Channels\WebhookChannel;
 use Illuminate\Notifications\Messages\MailMessage;
 
-test('battery low notification has correct via channels', function () {
+test('battery low notification has correct via channels', function (): void {
     $device = Device::factory()->create();
     $notification = new BatteryLow($device);
 
     expect($notification->via(new User()))->toBe(['mail', WebhookChannel::class]);
 });
 
-test('battery low notification creates correct mail message', function () {
+test('battery low notification creates correct mail message', function (): void {
     $device = Device::factory()->create([
         'name' => 'Test Device',
         'last_battery_voltage' => 3.0,
@@ -29,7 +29,7 @@ test('battery low notification creates correct mail message', function () {
     expect($mailMessage->viewData['device'])->toBe($device);
 });
 
-test('battery low notification creates correct webhook message', function () {
+test('battery low notification creates correct webhook message', function (): void {
     config([
         'services.webhook.notifications.topic' => 'battery.low',
         'app.name' => 'Test App',
@@ -60,7 +60,7 @@ test('battery low notification creates correct webhook message', function () {
     ]);
 });
 
-test('battery low notification creates correct array representation', function () {
+test('battery low notification creates correct array representation', function (): void {
     $device = Device::factory()->create([
         'name' => 'Test Device',
         'last_battery_voltage' => 3.0,

tests/Unit/Notifications/WebhookChannelTest.php

@@ -11,13 +11,13 @@ use GuzzleHttp\Exception\GuzzleException;
 use GuzzleHttp\Psr7\Response;
 use Illuminate\Notifications\Notification;
 
-test('webhook channel returns null when no webhook url is configured', function () {
+test('webhook channel returns null when no webhook url is configured', function (): void {
     $client = Mockery::mock(Client::class);
     $channel = new WebhookChannel($client);
 
     $user = new class extends User
     {
-        public function routeNotificationFor($driver, $notification = null)
+        public function routeNotificationFor($driver, $notification = null): null
         {
             return null; // No webhook URL configured
         }
@@ -30,13 +30,13 @@ test('webhook channel returns null when no webhook url is configured', function
     expect($result)->toBeNull();
 });
 
-test('webhook channel throws exception when notification does not implement toWebhook', function () {
+test('webhook channel throws exception when notification does not implement toWebhook', function (): void {
     $client = Mockery::mock(Client::class);
     $channel = new WebhookChannel($client);
 
     $user = new class extends User
     {
-        public function routeNotificationFor($driver, $notification = null)
+        public function routeNotificationFor($driver, $notification = null): string
         {
             return 'https://example.com/webhook';
         }
@@ -44,23 +44,23 @@ test('webhook channel throws exception when notification does not implement toWe
 
     $notification = new class extends Notification
     {
-        public function via($notifiable)
+        public function via($notifiable): array
         {
             return [];
         }
     };
 
-    expect(fn () => $channel->send($user, $notification))
+    expect(fn (): ?\GuzzleHttp\Psr7\Response => $channel->send($user, $notification))
         ->toThrow(Exception::class, 'Notification does not implement toWebhook method.');
 });
 
-test('webhook channel sends successful webhook request', function () {
+test('webhook channel sends successful webhook request', function (): void {
     $client = Mockery::mock(Client::class);
     $channel = new WebhookChannel($client);
 
     $user = new class extends User
     {
-        public function routeNotificationFor($driver, $notification = null)
+        public function routeNotificationFor($driver, $notification = null): string
         {
             return 'https://example.com/webhook';
         }
@@ -86,13 +86,13 @@ test('webhook channel sends successful webhook request', function () {
     expect($result)->toBe($expectedResponse);
 });
 
-test('webhook channel throws exception when response status is not successful', function () {
+test('webhook channel throws exception when response status is not successful', function (): void {
     $client = Mockery::mock(Client::class);
     $channel = new WebhookChannel($client);
 
     $user = new class extends User
     {
-        public function routeNotificationFor($driver, $notification = null)
+        public function routeNotificationFor($driver, $notification = null): string
         {
             return 'https://example.com/webhook';
         }
@@ -107,17 +107,17 @@ test('webhook channel throws exception when response status is not successful',
         ->once()
         ->andReturn($errorResponse);
 
-    expect(fn () => $channel->send($user, $notification))
+    expect(fn (): ?\GuzzleHttp\Psr7\Response => $channel->send($user, $notification))
         ->toThrow(Exception::class, 'Webhook request failed with status code: 400');
 });
 
-test('webhook channel handles guzzle exceptions', function () {
+test('webhook channel handles guzzle exceptions', function (): void {
     $client = Mockery::mock(Client::class);
     $channel = new WebhookChannel($client);
 
     $user = new class extends User
     {
-        public function routeNotificationFor($driver, $notification = null)
+        public function routeNotificationFor($driver, $notification = null): string
         {
             return 'https://example.com/webhook';
         }
@@ -130,6 +130,6 @@ test('webhook channel handles guzzle exceptions', function () {
         ->once()
         ->andThrow(new class extends Exception implements GuzzleException {});
 
-    expect(fn () => $channel->send($user, $notification))
+    expect(fn (): ?\GuzzleHttp\Psr7\Response => $channel->send($user, $notification))
         ->toThrow(Exception::class);
 });

tests/Unit/Notifications/WebhookMessageTest.php

@@ -4,26 +4,26 @@ declare(strict_types=1);
 
 use App\Notifications\Messages\WebhookMessage;
 
-test('webhook message can be created with static method', function () {
+test('webhook message can be created with static method', function (): void {
     $message = WebhookMessage::create('test data');
 
     expect($message)->toBeInstanceOf(WebhookMessage::class);
 });
 
-test('webhook message can be created with constructor', function () {
+test('webhook message can be created with constructor', function (): void {
     $message = new WebhookMessage('test data');
 
     expect($message)->toBeInstanceOf(WebhookMessage::class);
 });
 
-test('webhook message can set query parameters', function () {
+test('webhook message can set query parameters', function (): void {
     $message = WebhookMessage::create()
         ->query(['param1' => 'value1', 'param2' => 'value2']);
 
     expect($message->toArray()['query'])->toBe(['param1' => 'value1', 'param2' => 'value2']);
 });
 
-test('webhook message can set data', function () {
+test('webhook message can set data', function (): void {
     $data = ['key' => 'value', 'nested' => ['array' => 'data']];
     $message = WebhookMessage::create()
         ->data($data);
@@ -31,7 +31,7 @@ test('webhook message can set data', function () {
     expect($message->toArray()['data'])->toBe($data);
 });
 
-test('webhook message can add headers', function () {
+test('webhook message can add headers', function (): void {
     $message = WebhookMessage::create()
         ->header('X-Custom-Header', 'custom-value')
         ->header('Authorization', 'Bearer token');
@@ -41,7 +41,7 @@ test('webhook message can add headers', function () {
     expect($headers['Authorization'])->toBe('Bearer token');
 });
 
-test('webhook message can set user agent', function () {
+test('webhook message can set user agent', function (): void {
     $message = WebhookMessage::create()
         ->userAgent('Test App/1.0');
 
@@ -49,20 +49,20 @@ test('webhook message can set user agent', function () {
     expect($headers['User-Agent'])->toBe('Test App/1.0');
 });
 
-test('webhook message can set verify option', function () {
+test('webhook message can set verify option', function (): void {
     $message = WebhookMessage::create()
         ->verify(true);
 
     expect($message->toArray()['verify'])->toBeTrue();
 });
 
-test('webhook message verify defaults to false', function () {
+test('webhook message verify defaults to false', function (): void {
     $message = WebhookMessage::create();
 
     expect($message->toArray()['verify'])->toBeFalse();
 });
 
-test('webhook message can chain methods', function () {
+test('webhook message can chain methods', function (): void {
     $message = WebhookMessage::create(['initial' => 'data'])
         ->query(['param' => 'value'])
         ->data(['updated' => 'data'])
@@ -79,7 +79,7 @@ test('webhook message can chain methods', function () {
     expect($array['verify'])->toBeTrue();
 });
 
-test('webhook message toArray returns correct structure', function () {
+test('webhook message toArray returns correct structure', function (): void {
     $message = WebhookMessage::create(['test' => 'data']);
 
     $array = $message->toArray();

tests/Unit/Services/ImageGenerationServiceTest.php

@@ -11,7 +11,7 @@ use Illuminate\Foundation\Testing\RefreshDatabase;
 
 uses(RefreshDatabase::class);
 
-beforeEach(function () {
+beforeEach(function (): void {
     TrmnlPipeline::fake();
 });
 
@@ -37,7 +37,6 @@ it('get_image_settings returns device model settings when available', function (
     // Use reflection to access private method
     $reflection = new ReflectionClass(ImageGenerationService::class);
     $method = $reflection->getMethod('getImageSettings');
-    $method->setAccessible(true);
 
     $settings = $method->invoke(null, $device);
 
@@ -66,7 +65,6 @@ it('get_image_settings falls back to device settings when no device model', func
     // Use reflection to access private method
     $reflection = new ReflectionClass(ImageGenerationService::class);
     $method = $reflection->getMethod('getImageSettings');
-    $method->setAccessible(true);
 
     $settings = $method->invoke(null, $device);
 
@@ -90,7 +88,6 @@ it('get_image_settings uses defaults for missing device properties', function ()
     // Use reflection to access private method
     $reflection = new ReflectionClass(ImageGenerationService::class);
     $method = $reflection->getMethod('getImageSettings');
-    $method->setAccessible(true);
 
     $settings = $method->invoke(null, $device);
 
@@ -112,7 +109,6 @@ it('determine_image_format_from_model returns correct formats', function (): voi
     // Use reflection to access private method
     $reflection = new ReflectionClass(ImageGenerationService::class);
     $method = $reflection->getMethod('determineImageFormatFromModel');
-    $method->setAccessible(true);
 
     // Test BMP format
     $bmpModel = DeviceModel::factory()->create([

tests/Unit/Services/OidcProviderTest.php

@@ -9,10 +9,10 @@ use GuzzleHttp\Psr7\Response;
 use Illuminate\Http\Request;
 use Laravel\Socialite\Two\User;
 
-test('oidc provider throws exception when endpoint is not configured', function () {
+test('oidc provider throws exception when endpoint is not configured', function (): void {
     config(['services.oidc.endpoint' => null]);
 
-    expect(fn () => new OidcProvider(
+    expect(fn (): OidcProvider => new OidcProvider(
         new Request(),
         'client-id',
         'client-secret',
@@ -20,7 +20,7 @@ test('oidc provider throws exception when endpoint is not configured', function
     ))->toThrow(Exception::class, 'OIDC endpoint is not configured');
 });
 
-test('oidc provider handles well-known endpoint url', function () {
+test('oidc provider handles well-known endpoint url', function (): void {
     config(['services.oidc.endpoint' => 'https://example.com/.well-known/openid-configuration']);
 
     $mockClient = Mockery::mock(Client::class);
@@ -48,7 +48,7 @@ test('oidc provider handles well-known endpoint url', function () {
     expect($provider)->toBeInstanceOf(OidcProvider::class);
 });
 
-test('oidc provider handles base url endpoint', function () {
+test('oidc provider handles base url endpoint', function (): void {
     config(['services.oidc.endpoint' => 'https://example.com']);
 
     $mockClient = Mockery::mock(Client::class);
@@ -76,7 +76,7 @@ test('oidc provider handles base url endpoint', function () {
     expect($provider)->toBeInstanceOf(OidcProvider::class);
 });
 
-test('oidc provider throws exception when configuration is empty', function () {
+test('oidc provider throws exception when configuration is empty', function (): void {
     config(['services.oidc.endpoint' => 'https://example.com']);
 
     $mockClient = Mockery::mock(Client::class);
@@ -90,7 +90,7 @@ test('oidc provider throws exception when configuration is empty', function () {
 
     $this->app->instance(Client::class, $mockClient);
 
-    expect(fn () => new OidcProvider(
+    expect(fn (): OidcProvider => new OidcProvider(
         new Request(),
         'client-id',
         'client-secret',
@@ -98,7 +98,7 @@ test('oidc provider throws exception when configuration is empty', function () {
     ))->toThrow(Exception::class, 'OIDC configuration is empty or invalid JSON');
 });
 
-test('oidc provider throws exception when authorization endpoint is missing', function () {
+test('oidc provider throws exception when authorization endpoint is missing', function (): void {
     config(['services.oidc.endpoint' => 'https://example.com']);
 
     $mockClient = Mockery::mock(Client::class);
@@ -115,7 +115,7 @@ test('oidc provider throws exception when authorization endpoint is missing', fu
 
     $this->app->instance(Client::class, $mockClient);
 
-    expect(fn () => new OidcProvider(
+    expect(fn (): OidcProvider => new OidcProvider(
         new Request(),
         'client-id',
         'client-secret',
@@ -123,7 +123,7 @@ test('oidc provider throws exception when authorization endpoint is missing', fu
     ))->toThrow(Exception::class, 'authorization_endpoint not found in OIDC configuration');
 });
 
-test('oidc provider throws exception when configuration request fails', function () {
+test('oidc provider throws exception when configuration request fails', function (): void {
     config(['services.oidc.endpoint' => 'https://example.com']);
 
     $mockClient = Mockery::mock(Client::class);
@@ -133,7 +133,7 @@ test('oidc provider throws exception when configuration request fails', function
 
     $this->app->instance(Client::class, $mockClient);
 
-    expect(fn () => new OidcProvider(
+    expect(fn (): OidcProvider => new OidcProvider(
         new Request(),
         'client-id',
         'client-secret',
@@ -141,7 +141,7 @@ test('oidc provider throws exception when configuration request fails', function
     ))->toThrow(Exception::class, 'Failed to load OIDC configuration');
 });
 
-test('oidc provider uses default scopes when none provided', function () {
+test('oidc provider uses default scopes when none provided', function (): void {
     config(['services.oidc.endpoint' => 'https://example.com']);
 
     $mockClient = Mockery::mock(Client::class);
@@ -169,7 +169,7 @@ test('oidc provider uses default scopes when none provided', function () {
     expect($provider)->toBeInstanceOf(OidcProvider::class);
 });
 
-test('oidc provider uses custom scopes when provided', function () {
+test('oidc provider uses custom scopes when provided', function (): void {
     config(['services.oidc.endpoint' => 'https://example.com']);
 
     $mockClient = Mockery::mock(Client::class);
@@ -198,7 +198,7 @@ test('oidc provider uses custom scopes when provided', function () {
     expect($provider)->toBeInstanceOf(OidcProvider::class);
 });
 
-test('oidc provider maps user data correctly', function () {
+test('oidc provider maps user data correctly', function (): void {
     config(['services.oidc.endpoint' => 'https://example.com']);
 
     $mockClient = Mockery::mock(Client::class);
@@ -241,7 +241,7 @@ test('oidc provider maps user data correctly', function () {
     expect($user->getAvatar())->toBe('https://example.com/avatar.jpg');
 });
 
-test('oidc provider handles missing user fields gracefully', function () {
+test('oidc provider handles missing user fields gracefully', function (): void {
     config(['services.oidc.endpoint' => 'https://example.com']);
 
     $mockClient = Mockery::mock(Client::class);