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/Logging/LoggerInitializer.php

@@ -121,7 +121,7 @@ final readonly class LoggerInitializer
      */
     private function createQueue(Environment $env): Queue
     {
-        $redisConfig = new RedisConfig(host: $env->getString(EnvKey::REDIS_HOST, 'redis'), database: 2);
+        $redisConfig = RedisConfig::fromEnvironment($env);
         $redisConnection = new RedisConnection($redisConfig, 'queue');
 
         return new RedisQueue($redisConnection, 'commands');

src/Framework/Queue/QueueInitializer.php

@@ -32,19 +32,9 @@ final readonly class QueueInitializer
             }
 
             // Try to use Redis connection pool if available, otherwise create direct connection
-            $redisConnection = null;
-            if ($this->container->has(RedisConnectionPool::class)) {
-                $pool = $this->container->get(RedisConnectionPool::class);
-                $redisConnection = $pool->getQueueConnection();
-            } else {
-                // Fallback to direct connection creation
-                $redisConfig = new RedisConfig(
-                    host: 'redis',
-                    port: 6379,
-                    database: 2 // Use DB 2 for queue
-                );
-                $redisConnection = new RedisConnection($redisConfig, 'queue');
-            }
+
+            $pool = $this->container->get(RedisConnectionPool::class);
+            $redisConnection = $pool->getQueueConnection();
 
             return new RedisQueue(
                 connection: $redisConnection,

src/Framework/Redis/RedisConfig.php

@@ -12,7 +12,7 @@ use App\Framework\Config\EnvKey;
  */
 final readonly class RedisConfig
 {
-    public function __construct(
+    private function __construct(
         public string $host = 'redis',
         public int $port = 6379,
         public ?string $password = null,

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
             );
         }