feat : init Central project — Symfony 8 + Nuxt 4 + Docker starter

Same architecture as Lesstime: API Platform 4, JWT auth, @malio/layer-ui,
PostgreSQL 16, Docker Compose (ports 8083/3003/5436), dark mode theme.

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

tests/bootstrap.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+use Symfony\Component\Dotenv\Dotenv;
+
+require dirname(__DIR__).'/vendor/autoload.php';
+
+if (method_exists(Dotenv::class, 'bootEnv')) {
+    new Dotenv()->bootEnv(dirname(__DIR__).'/.env');
+}
+
+if ($_SERVER['APP_DEBUG']) {
+    umask(0o000);
+}