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>

frontend/services/auth.ts

@@ -0,0 +1,22 @@
+import type { UserData } from './dto/user-data'
+
+export function getCurrentUser() {
+    const api = useApi()
+    return api.get<UserData>('/me', {}, { toastErrorKey: 'errors.auth.session' })
+}
+
+export function login(username: string, password: string) {
+    const api = useApi()
+    return api.post('/login_check', { username, password }, {
+        toastOn401: true,
+        toastErrorKey: 'errors.auth.login'
+    })
+}
+
+export function logout() {
+    const api = useApi()
+    return api.post('/logout', {}, {
+        toastErrorKey: 'errors.auth.logout',
+        toastSuccessKey: 'success.auth.logout'
+    })
+}