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>

config/packages/nelmio_cors.yaml

@@ -0,0 +1,11 @@
+nelmio_cors:
+    defaults:
+        origin_regex: true
+        allow_origin: ['%env(CORS_ALLOW_ORIGIN)%']
+        allow_credentials: true
+        allow_methods: ['GET', 'OPTIONS', 'POST', 'PUT', 'PATCH', 'DELETE']
+        allow_headers: ['Content-Type', 'Authorization']
+        expose_headers: ['Link']
+        max_age: 3600
+    paths:
+        '^/': null