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

src/Application/Controller/QrCodeTestController.php

@@ -4,14 +4,16 @@ declare(strict_types=1);
 
 namespace App\Application\Controller;
 
-use App\Framework\Http\Attribute\Route;
+use App\Framework\Attributes\Route;
+use App\Framework\Http\Headers;
 use App\Framework\Http\HttpRequest;
+use App\Framework\Http\HttpResponse;
 use App\Framework\Http\Method;
-use App\Framework\Http\Result\HtmlResult;
-use App\Framework\Http\Result\HttpResponse;
+use App\Framework\Http\Status;
 use App\Framework\QrCode\ErrorCorrectionLevel;
 use App\Framework\QrCode\QrCodeGenerator;
 use App\Framework\QrCode\QrCodeVersion;
+use App\Framework\Router\Result\HtmlResult;
 
 /**
  * QR Code Test Controller
@@ -29,7 +31,7 @@ final readonly class QrCodeTestController
      * Show QR code test page with multiple examples
      */
     #[Route(path: '/test/qr-codes', method: Method::GET)]
-    public function showTestPage(HttpRequest $request): HttpResponse
+    public function showTestPage(HttpRequest $request): HtmlResult
     {
         // Generate various test QR codes
         $examples = [
@@ -120,9 +122,9 @@ final readonly class QrCodeTestController
      * Generate individual QR code for API testing
      */
     #[Route(path: '/test/qr-code', method: Method::GET)]
-    public function generateTestQrCode(HttpRequest $request): HttpResponse
+    public function generateTestQrCode(HttpRequest $request): HtmlResult|HttpResponse
     {
-        $data = $request->query->get('data', 'Test QR Code from API');
+        $data = (string) $request->query->get('data', 'Test QR Code from API');
         $format = $request->query->get('format', 'svg'); // svg or datauri
         $errorLevel = $request->query->get('error', 'M');
         $version = $request->query->get('version');
@@ -147,15 +149,15 @@ final readonly class QrCodeTestController
                 $svg = $this->qrCodeGenerator->generateSvg($data, $errorCorrectionLevel, $qrVersion);
 
                 return new HttpResponse(
-                    body: $svg,
-                    statusCode: 200,
-                    headers: ['Content-Type' => 'image/svg+xml']
+                    Status::OK,
+                    new Headers(['Content-Type' => 'image/svg+xml']),
+                    $svg
                 );
             }
         } catch (\Exception $e) {
             return new HtmlResult(
                 "<h1>QR Code Generation Error</h1><p>{$e->getMessage()}</p>",
-                500
+                Status::INTERNAL_SERVER_ERROR
             );
         }
     }
@@ -173,7 +175,7 @@ final readonly class QrCodeTestController
                 $analysis = $qrCode['analysis'];
                 $analysisHtml = '';
                 foreach ($analysis as $key => $value) {
-                    $displayValue = is_object($value) ? class_basename($value) : $value;
+                    $displayValue = is_object($value) ? basename(str_replace('\\', '/', get_class($value))) : $value;
                     $analysisHtml .= "<tr><td>{$key}</td><td>{$displayValue}</td></tr>";
                 }