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/Auth/PasswordHasher.php

@@ -239,6 +239,7 @@ final readonly class PasswordHasher
 
     /**
      * Get parameters for security level
+     * @return array<string, mixed>
      */
     private function getParametersForLevel(string $algorithm, string $level): array
     {
@@ -272,6 +273,7 @@ final readonly class PasswordHasher
 
     /**
      * Get default parameters for algorithm
+     * @return array<string, mixed>
      */
     private function getDefaultParameters(string $algorithm): array
     {