Move exception class validation to ContainerFactory as requested

- Moved validation from DefaultExceptionTypeResolver constructor to ContainerFactory::validateParameters()
- Added bleeding edge feature flag protection to avoid BC break
- Use InvalidConfigurationException for proper error handling
- Note: The required placement in validateParameters() complicates the code as we cannot use BleedingEdgeToggle::isBleedingEdge() since it's not initialized yet, requiring manual parameter checking

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: janedbal

src/DependencyInjection/ContainerFactory.php

@@ -7,6 +7,7 @@
 use Nette\DI\Definitions\Statement;
 use Nette\DI\Extensions\ExtensionsExtension;
 use Nette\DI\Helpers;
+use Nette\DI\InvalidConfigurationException;
 use Nette\Schema\Context as SchemaContext;
 use Nette\Schema\Elements\AnyOf;
 use Nette\Schema\Elements\Structure;
@@ -323,6 +324,34 @@ private function validateParameters(array $parameters, array $parametersSchema):
 		if ($phpVersion['max'] < $phpVersion['min']) {
 			throw new InvalidPhpVersionException('Invalid PHP version range: phpVersion.max should be greater or equal to phpVersion.min.');
 		}
+
+		if (array_key_exists('featureToggles', $parameters) && is_array($parameters['featureToggles']) && (bool) $parameters['featureToggles']['bleedingEdge']) {
+			$this->validateExceptionClasses($parameters);
+		}
+	}
+
+	/**
+	 * @param array<mixed> $parameters
+	 */
+	private function validateExceptionClasses(array $parameters): void
+	{
+		$reflectionProvider = ReflectionProviderStaticAccessor::getInstance();
+
+		if (array_key_exists('checkedExceptionClasses', $parameters) && is_array($parameters['checkedExceptionClasses'])) {
+			foreach ($parameters['checkedExceptionClasses'] as $checkedExceptionClass) {
+				if (!$reflectionProvider->hasClass($checkedExceptionClass)) {
+					throw new InvalidConfigurationException('Class ' . $checkedExceptionClass . ' used in \'checkedExceptionClasses\' does not exist.');
+				}
+			}
+		}
+
+		if (array_key_exists('uncheckedExceptionClasses', $parameters) && is_array($parameters['uncheckedExceptionClasses'])) {
+			foreach ($parameters['uncheckedExceptionClasses'] as $uncheckedExceptionClass) {
+				if (!$reflectionProvider->hasClass($uncheckedExceptionClass)) {
+					throw new InvalidConfigurationException('Class ' . $uncheckedExceptionClass . ' used in \'uncheckedExceptionClasses\' does not exist.');
+				}
+			}
+		}
 	}
 
 	/**

src/Rules/Exceptions/DefaultExceptionTypeResolver.php

@@ -5,7 +5,6 @@
 use Nette\Utils\Strings;
 use PHPStan\Analyser\Scope;
 use PHPStan\Reflection\ReflectionProvider;
-use PHPStan\ShouldNotHappenException;
 use function count;
 
 /**
@@ -28,16 +27,6 @@ public function __construct(
 		private array $checkedExceptionClasses,
 	)
 	{
-		foreach ($this->checkedExceptionClasses as $checkedExceptionClass) {
-			if (!$this->reflectionProvider->hasClass($checkedExceptionClass)) {
-				throw new ShouldNotHappenException('Class ' . $checkedExceptionClass . ' used in \'checkedExceptionClasses\' does not exist.');
-			}
-		}
-		foreach ($this->uncheckedExceptionClasses as $uncheckedExceptionClass) {
-			if (!$this->reflectionProvider->hasClass($uncheckedExceptionClass)) {
-				throw new ShouldNotHappenException('Class ' . $uncheckedExceptionClass . ' used in \'uncheckedExceptionClasses\' does not exist.');
-			}
-		}
 	}
 
 	public function isCheckedException(string $className, Scope $scope): bool