chore: update app version to 0.5.43 and adjust build time

apps/web/index.html

@@ -107,7 +107,7 @@
     </script>
     <!-- base href 由构建工具处理，CDN 模式下使用相对路径 -->
     <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
-    <meta name="app-version" content="0.5.42" />
+    <meta name="app-version" content="0.5.43" />
 
     <link
       rel="icon"

apps/web/public/version.json

@@ -1,6 +1,6 @@
 {
   "version": "0.5.43",
-  "buildTime": "2026-01-23T15:28:27.653Z",
+  "buildTime": "2026-01-23T15:28:28.606Z",
   "gitCommit": "unknown",
   "changelog": [
     "Rename project to Opentu and update README",

packages/drawnix/src/components/ai-input-bar/ai-input-bar.scss

@@ -1789,8 +1789,8 @@ $vip-color: #E91E63;
   color: $orange-primary;
 }
 
-// 深色模式下的 Portal 下拉菜单样式
-@media (prefers-color-scheme: dark) {
+// 深色模式下的 Portal 下拉菜单样式（使用应用级别主题检测，与其他组件一致）
+:root[data-theme='dark'] {
   .generation-type-dropdown__menu,
   .count-dropdown__menu {
     background: var(--color-surface-high, #2a2a2a);