前端和后端源码，合并到一个git仓库中，方便用户下载，避免前后端不匹配的问题

jeecgboot-vue3/src/logics/theme/dark.ts

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+import { darkCssIsReady, loadDarkThemeCss } from '@rys-fe/vite-plugin-theme/es/client';
+import { addClass, hasClass, removeClass } from '/@/utils/domUtils';
+
+export async function updateDarkTheme(mode: string | null = 'light') {
+  const htmlRoot = document.getElementById('htmlRoot');
+  if (!htmlRoot) {
+    return;
+  }
+  const hasDarkClass = hasClass(htmlRoot, 'dark');
+  if (mode === 'dark') {
+    if (import.meta.env.PROD && !darkCssIsReady) {
+      await loadDarkThemeCss();
+    }
+    htmlRoot.setAttribute('data-theme', 'dark');
+    if (!hasDarkClass) {
+      addClass(htmlRoot, 'dark');
+    }
+  } else {
+    htmlRoot.setAttribute('data-theme', 'light');
+    if (hasDarkClass) {
+      removeClass(htmlRoot, 'dark');
+    }
+  }
+}