refactor : reorganize infra files into infra/dev and infra/prod

Consolidate Docker, Nginx, and deploy configs from 5 scattered directories
(docker/, deploy/docker/, deploy/nginx/, script/) into a single infra/ tree
with dev/ and prod/ subdirectories. Update all references in docker-compose,
Makefile, CI workflows, Dockerfiles, and documentation.

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

docs/deploy.md

@@ -61,7 +61,7 @@ ENCRYPTION_KEY=<random-hex-32>
 ## 4. Installer le script de deploy
 
 ```bash
-sudo cp script/deploy-release.sh /usr/local/bin/deploy-lesstime
+sudo cp infra/prod/deploy-release.sh /usr/local/bin/deploy-lesstime
 sudo chmod +x /usr/local/bin/deploy-lesstime
 ```
 
@@ -89,7 +89,7 @@ sudo -u www-data php bin/console lexik:jwt:generate-keypair --skip-if-exists --e
 ## 7. Configurer Nginx
 
 ```bash
-sudo cp deploy/nginx/lesstime.conf /etc/nginx/sites-available/lesstime
+sudo cp infra/prod/nginx-baremetal.conf /etc/nginx/sites-available/lesstime
 sudo ln -sf /etc/nginx/sites-available/lesstime /etc/nginx/sites-enabled/
 sudo nginx -t && sudo systemctl reload nginx
 ```