Refresh-Button neben Version in Header

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/App.tsx

@@ -188,6 +188,13 @@ export default function App() {
               <span className="hub-download-label">Desktop App</span>
             </a>
           )}
+          <button
+            className="hub-refresh-btn"
+            onClick={() => window.location.reload()}
+            title="Seite neu laden"
+          >
+            {'\u{1F504}'}
+          </button>
           <span
             className="hub-version hub-version-clickable"
             onClick={() => {

web/src/styles.css

@@ -336,6 +336,23 @@ html, body {
   max-width: 300px;
 }
 
+/* ── Refresh Button ── */
+.hub-refresh-btn {
+  background: none;
+  border: none;
+  color: var(--text-muted);
+  font-size: 1rem;
+  cursor: pointer;
+  padding: 4px 6px;
+  border-radius: var(--radius);
+  transition: all var(--transition);
+  line-height: 1;
+}
+.hub-refresh-btn:hover {
+  color: var(--accent);
+  background: rgba(230, 126, 34, 0.1);
+}
+
 /* ── Version Info Modal ── */
 .hub-version-clickable {
   cursor: pointer;