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/Cryptography/KeyDerivationFunction.php

@@ -294,6 +294,7 @@ final readonly class KeyDerivationFunction
 
     /**
      * Get recommended parameters for different security levels
+     * @return array<string, mixed>
      */
     public function getRecommendedParameters(string $algorithm, string $securityLevel = 'standard'): array
     {