fix(core): missing signal availability callback

core/src/Providers/ArtisanServiceProvider.php

@@ -9,6 +9,7 @@
 use Illuminate\Console\Scheduling\ScheduleFinishCommand;
 use Illuminate\Console\Scheduling\ScheduleTestCommand;
 use Illuminate\Console\Scheduling\ScheduleWorkCommand;
+use Illuminate\Console\Signals;
 use Illuminate\Events\Dispatcher;
 use Illuminate\Support\ServiceProvider;
 use Illuminate\Database\Console\Seeds\SeedCommand;
@@ -22,6 +23,7 @@
 use Illuminate\Database\Console\Migrations\RefreshCommand as MigrateRefreshCommand;
 use Illuminate\Database\Console\Migrations\RollbackCommand as MigrateRollbackCommand;
 use Illuminate\Database\Console\Migrations\MigrateMakeCommand;
+use Symfony\Component\Console\SignalRegistry\SignalRegistry;
 
 use EvolutionCMS\Console\ClearCompiledCommand;
 use EvolutionCMS\Console\VendorPublishCommand;
@@ -104,6 +106,8 @@ class ArtisanServiceProvider extends ServiceProvider
      */
     public function register()
     {
+        Signals::resolveAvailabilityUsing(static fn () => SignalRegistry::isSupported());
+
         $hereCommands = array_merge(
             $this->commands, $this->devCommands
         );

core/tests/Unit/Console/ConsoleSignalsTest.php

@@ -0,0 +1,55 @@
+<?php
+
+use EvolutionCMS\Providers\ArtisanServiceProvider;
+use Illuminate\Console\Command;
+use Illuminate\Console\Signals;
+use Illuminate\Container\Container;
+use Symfony\Component\Console\Application;
+
+beforeEach(function () {
+    $this->resolver = new ReflectionProperty(Signals::class, 'availabilityResolver');
+    $this->previousResolver = $this->resolver->getValue();
+    $this->resolver->setValue(null, null);
+
+    (new ArtisanServiceProvider(new Container()))->register();
+});
+
+afterEach(function () {
+    $this->resolver->setValue(null, $this->previousResolver);
+});
+
+test('console boot registers signal availability for the current runtime', function () {
+    $called = false;
+
+    Signals::whenAvailable(function () use (&$called) {
+        $called = true;
+    });
+
+    expect($called)->toBe(function_exists('pcntl_signal'));
+});
+
+test('commands can trap and release signals after console boot', function () {
+    $command = new Command();
+    $command->setApplication(new Application());
+    $resolved = false;
+    $signal = defined('SIGUSR1') ? SIGUSR1 : 10;
+    $previousHandler = function_exists('pcntl_signal_get_handler')
+        ? pcntl_signal_get_handler($signal)
+        : null;
+
+    try {
+        $command->trap(function () use (&$resolved, $signal) {
+            $resolved = true;
+
+            return $signal;
+        }, static function () {});
+
+        expect($resolved)->toBe(function_exists('pcntl_signal'));
+    } finally {
+        $command->untrap();
+    }
+
+    if ($previousHandler !== null) {
+        expect(pcntl_signal_get_handler($signal))->toBe($previousHandler);
+    }
+});