fix: resolve RedisCache array offset error and improve discovery diagnostics

- Fix RedisCache driver to handle MGET failures gracefully with fallback
- Add comprehensive discovery context comparison debug tools
- Identify root cause: WEB context discovery missing 166 items vs CLI
- WEB context missing RequestFactory class entirely (52 vs 69 commands)
- Improved exception handling with detailed binding diagnostics

tests/Domain/QrCode/End2EndTest.php

@@ -12,7 +12,8 @@ use App\Domain\QrCode\ValueObject\ErrorCorrectionLevel;
 use App\Domain\QrCode\ValueObject\QrCodeMatrix;
 use App\Domain\QrCode\ValueObject\QrCodeVersion;
 
-skip('End-to-End QR-Code-Generierung funktioniert', function () {
+it('End-to-End QR-Code-Generierung funktioniert', function () {
+    test()->markTestSkipped('End-to-End QR-Code test temporarily disabled');
     // Abhängigkeiten aufbauen
     $encoder = new QrCodeEncoder();
     $renderer = new QrCodeRenderer(new QrCodeMasker(), new ReedSolomon());