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/Framework/Waf/Feedback/WafFeedbackIntegrator.php

@@ -133,6 +133,7 @@ final readonly class WafFeedbackIntegrator
             }
 
             // Create a new detection collection with the processed detections
+            /** @var array<\App\Framework\Waf\Detection> $processedDetections */
             $newDetections = new DetectionCollection($processedDetections);
 
             // Determine the new status based on the remaining detections
@@ -172,7 +173,7 @@ final readonly class WafFeedbackIntegrator
                 return LayerResult::neutral(
                     'waf_feedback_integrator',
                     'Detections adjusted based on feedback'
-                )->withExecutionDuration($result->executionDuration);
+                )->withExecutionDuration($result->executionDuration ?? Duration::zero());
             } else {
                 return LayerResult::clean(
                     'waf_feedback_integrator',
@@ -265,7 +266,7 @@ final readonly class WafFeedbackIntegrator
             if ($adjustedThreatScore < 0.7) { // Assuming 0.7 is the block threshold
                 return WafDecision::allow(
                     $assessment,
-                    $decision->processingTime
+                    $decision->processingTime ?? Duration::zero()
                 );
             }
         }
@@ -339,7 +340,7 @@ final readonly class WafFeedbackIntegrator
         }
 
         // If there's a clear consensus (more than 50% of suggestions), return it
-        if ($mostSuggestedCount > ($totalSeverityAdjustments / 2)) {
+        if ($mostSuggestedSeverity !== null && $mostSuggestedCount > ($totalSeverityAdjustments / 2)) {
             return DetectionSeverity::from($mostSuggestedSeverity);
         }