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>

frontend/pages/index.vue

@@ -0,0 +1,12 @@
+<template>
+    <div>
+        <h1 class="text-xl font-bold text-primary-500 sm:text-2xl">{{ $t('dashboard.title') }}</h1>
+        <p class="mt-4 text-neutral-500">{{ $t('dashboard.welcome') }}</p>
+    </div>
+</template>
+
+<script setup lang="ts">
+const { t } = useI18n()
+
+useHead({ title: t('dashboard.title') })
+</script>