refactor: simplify Redis configuration initialization

- Use RedisConfig::fromEnvironment() in LoggerInitializer
- Remove fallback logic in QueueInitializer, always use connection pool
- Make RedisConfig constructor private
- Clean up Redis connection error message

src/Framework/Redis/RedisConnection.php

@@ -112,7 +112,7 @@ final class RedisConnection implements RedisConnectionInterface
             $this->connected = false;
 
             throw new RedisConnectionException(
-                "Failed to connect to Redis ({$this->name}): " . $e->getMessage() . " with Host: {$this->config->host} and Password: {$this->config->password} should be {$_ENV['REDIS_HOST']} and {$_ENV['REDIS_PASSWORD']}",
+                "Failed to connect to Redis ({$this->name}): " . $e->getMessage() . " with Host: {$this->config->host} and Password: {$this->config->password}",
                 previous: $e
             );
         }