fix(desktop): render sidebar after importing sessions

loadSessions() only refreshes the data model; the sidebar DOM is drawn by
renderSessionList(). Imported sessions therefore only appeared after the
next render (e.g. sending a message). Call renderSessionList() right after.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontends/desktop/static/app.js

@@ -1035,7 +1035,7 @@ async function importMemoryFromDir() {
     + `, ${t('sys.memorySessions')}: ${res.sessionsAdded || 0}`
     + (res.backupDir ? `\n${t('sys.memoryImportBackup')}: ${res.backupDir}` : '');
   if (res.sessionsAdded) {
-    try { await loadSessions(); } catch (_) {}
+    try { await loadSessions(); renderSessionList(); } catch (_) {}
   }
   showChanToast(t('sys.memoryImported'), detail, 'ok');
 }

frontends/desktop/static/index.html

@@ -678,6 +678,6 @@
 <!-- highlight.js -->
 <script src="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@11.9.0/build/highlight.min.js" crossorigin="anonymous"></script>
 <script src="phosphor-icons.js?v=2"></script>
-<script src="app.js?v=211"></script>
+<script src="app.js?v=212"></script>
 </body>
 </html>