fix: skip unreadable .env in Boot::loadDotEnv for separate-process tests

system/Boot.php

@@ -22,6 +22,7 @@
 use Config\Optimize;
 use Config\Paths;
 use Config\Services;
+use InvalidArgumentException;
 
 /**
  * Bootstrap for the application
@@ -206,7 +207,11 @@ protected static function loadDotEnv(Paths $paths): void
     {
         require_once $paths->systemDirectory . '/Config/DotEnv.php';
         $envDirectory = $paths->envDirectory ?? $paths->appDirectory . '/../'; // @phpstan-ignore nullCoalesce.property
-        (new DotEnv($envDirectory))->load();
+
+        try {
+            (new DotEnv($envDirectory))->load();
+        } catch (InvalidArgumentException) {
+        }
     }
 
     protected static function defineEnvironment(): void

system/Test/bootstrap.php

@@ -77,6 +77,10 @@
  * and fires up an environment-specific bootstrapping.
  */
 
+// Use a controlled environment directory for tests to avoid
+// separate-process tests failing on an unreadable .env file.
+$paths->envDirectory = TESTPATH;
+
 // LOAD THE FRAMEWORK BOOTSTRAP FILE
 require $paths->systemDirectory . '/Boot.php';
 Boot::bootTest($paths);