feat(header): identità utente SSR, link Accedi / menu utente

src/components/Header.astro

@@ -1,7 +1,15 @@
 ---
 import { site } from '../data/site';
 import { t, contentImageUrl } from '../lib/content';
+interface Props {
+  user: { username: string; role: string } | null;
+  showTags: boolean;
+  canTags: boolean;
+}
+const { user, canTags } = Astro.props;
 const path = Astro.url.pathname;
+const loginHref = `/login?next=${encodeURIComponent(path)}`;
+const areaHref = user?.role === 'superuser' ? '/admin/content' : '/admin';
 ---
 <header class="hdr" id="site-header">
   <div class="container hdr__in">
@@ -11,6 +19,22 @@ const path = Astro.url.pathname;
         <a href={item.href} class:list={['hdr__link', { 'is-active': path === item.href || (item.href !== '/' && path.startsWith(item.href)) }]}>{t(`global.nav.${i + 1}.label`)}</a>
       ))}
     </nav>
+    <div class="hdr__user">
+      {user ? (
+        <details class="umenu">
+          <summary class="umenu__btn">{user.username} ▾</summary>
+          <div class="umenu__panel">
+            <a href={areaHref}>Area riservata</a>
+            {canTags && (
+              <button type="button" class="umenu__tags" id="toggle-tags" data-slot="tags">Mostra tag</button>
+            )}
+            <a href="/admin/logout">Esci</a>
+          </div>
+        </details>
+      ) : (
+        <a class="hdr__login" href={loginHref}>Accedi</a>
+      )}
+    </div>
     <button class="hdr__burger" id="nav-toggle" aria-label="Apri menu" aria-expanded="false">
       <span></span><span></span><span></span>
     </button>
@@ -32,6 +56,15 @@ const path = Astro.url.pathname;
     .hdr__link { padding: 12px 0; }
     .hdr__burger { display: block; }
   }
+  .hdr__user { display: flex; align-items: center; }
+  .hdr__login { font-family: var(--font-heading); font-size: .72rem; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; text-decoration: none; color: var(--c-heading); }
+  .hdr__login:hover { color: var(--c-accent-dark); }
+  .umenu { position: relative; }
+  .umenu__btn { cursor: pointer; list-style: none; font-family: var(--font-heading); font-size: .72rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--c-heading); }
+  .umenu__btn::-webkit-details-marker { display: none; }
+  .umenu__panel { position: absolute; right: 0; top: calc(100% + 8px); background: #fff; box-shadow: 0 8px 22px rgba(0,0,0,.12); min-width: 180px; display: flex; flex-direction: column; padding: 8px 0; z-index: 200; }
+  .umenu__panel a, .umenu__tags { padding: 10px 16px; text-align: left; background: none; border: 0; cursor: pointer; font: inherit; font-size: .8rem; text-decoration: none; color: var(--c-heading); }
+  .umenu__panel a:hover, .umenu__tags:hover { background: #f4f2ef; }
 </style>
 
 <script>