all: sync with master; upd chlog

client/public/login.html

@@ -17,5 +17,12 @@
             You need to enable JavaScript to run this app.
         </noscript>
         <div id="root"></div>
+        <script>
+            (function() {
+                var prefersDark = window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches;
+                var currentTheme = prefersDark ? 'dark' : 'light';
+                document.body.dataset.theme = currentTheme;
+            })();
+        </script>
     </body>
 </html>