feat : init project Coltura (CRM/ERP)

Symfony 8 + API Platform 4 + Nuxt 4 monorepo.
Backend: User entity, JWT auth, fixtures.
Frontend: login, dashboard, auth middleware, i18n, @malio/layer-ui.
Docker: dev (ports 8083/3003/5436) + prod multi-stage.

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

infra/prod/php-prod.ini

@@ -0,0 +1,18 @@
+[Date]
+date.timezone = Europe/Paris
+
+[Upload]
+upload_max_filesize = 50M
+post_max_size = 55M
+
+[opcache]
+opcache.enable = 1
+opcache.memory_consumption = 256
+opcache.max_accelerated_files = 20000
+opcache.validate_timestamps = 0
+opcache.preload = /var/www/html/config/preload.php
+opcache.preload_user = www-data
+
+[Performance]
+realpath_cache_size = 4096K
+realpath_cache_ttl = 600