feat(infra) : add monolog logging and persist logs in prod

Install symfony/monolog-bundle with rotating_file handlers.
Add named volume inventory_logs for prod log persistence.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

config/bundles.php

@@ -9,6 +9,7 @@ use Doctrine\Bundle\MigrationsBundle\DoctrineMigrationsBundle;
 use Nelmio\CorsBundle\NelmioCorsBundle;
 use Symfony\AI\McpBundle\McpBundle;
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
+use Symfony\Bundle\MonologBundle\MonologBundle;
 use Symfony\Bundle\SecurityBundle\SecurityBundle;
 use Symfony\Bundle\TwigBundle\TwigBundle;
 
@@ -22,4 +23,5 @@ return [
     ApiPlatformBundle::class        => ['all' => true],
     DAMADoctrineTestBundle::class   => ['test' => true],
     McpBundle::class                => ['all' => true],
+    MonologBundle::class            => ['all' => true],
 ];