fix: option to supress vendor deprecation

lib/Http/ErrorHandler.php

@@ -96,6 +96,10 @@ final class ErrorHandler
             return true;
         }
 
+        if (self::shouldSuppressVendorIssue($severity, $file)) {
+            return true;
+        }
+
         throw new \ErrorException($message, 0, $severity, $file, $line);
     }
 
@@ -194,4 +198,46 @@ final class ErrorHandler
     {
         return defined('PHPUNIT_COMPOSER_INSTALL') || defined('__PHPUNIT_PHAR__');
     }
+
+    private static function shouldSuppressVendorIssue(int $severity, string $file): bool
+    {
+        if (!self::isVendorPath($file)) {
+            return false;
+        }
+
+        return match (self::vendorIssueMode()) {
+            'suppress_deprecations' => self::isDeprecationSeverity($severity),
+            'suppress_deprecations_warnings' => self::isDeprecationSeverity($severity) || self::isWarningSeverity($severity),
+            default => false,
+        };
+    }
+
+    private static function vendorIssueMode(): string
+    {
+        $raw = getenv('APP_VENDOR_PHP_ISSUES_MODE');
+        if ($raw === false) {
+            return 'strict';
+        }
+
+        $mode = strtolower(trim((string) $raw));
+        return in_array($mode, ['strict', 'suppress_deprecations', 'suppress_deprecations_warnings'], true)
+            ? $mode
+            : 'strict';
+    }
+
+    private static function isDeprecationSeverity(int $severity): bool
+    {
+        return in_array($severity, [E_DEPRECATED, E_USER_DEPRECATED], true);
+    }
+
+    private static function isWarningSeverity(int $severity): bool
+    {
+        return in_array($severity, [E_WARNING, E_USER_WARNING], true);
+    }
+
+    private static function isVendorPath(string $file): bool
+    {
+        $normalized = str_replace('\\', '/', $file);
+        return str_contains($normalized, '/vendor/');
+    }
 }