1 files changed, 18 insertions, 0 deletions
diff --git a/packages/app/vite.js b/packages/app/vite.js
index 6b8fd6137..5ab368836 100644
--- a/packages/app/vite.js
+++ b/packages/app/vite.js
@@ -1,6 +1,23 @@
 import solidPlugin from "vite-plugin-solid"
 import tailwindcss from "@tailwindcss/vite"
 import { fileURLToPath } from "url"
+import { generatePreloadScript } from "@opencode-ai/ui/theme"
+
+/**
+ * Vite plugin that injects the theme preload script into index.html.
+ * This ensures the theme is applied before the page renders, avoiding FOUC.
+ * @type {import("vite").Plugin}
+ */
+const themePreloadPlugin = {
+  name: "opencode-desktop:theme-preload",
+  transformIndexHtml(html) {
+    const script = generatePreloadScript()
+    return html.replace(
+      /<script id="oc-theme-preload-script">\s*\/\* THEME_PRELOAD_SCRIPT \*\/\s*<\/script>/,
+      `<script id="oc-theme-preload-script">${script}</script>`,
+    )
+  },
+}
 
 /**
  * @type {import("vite").PluginOption}
@@ -21,6 +38,7 @@ export default [
       }
     },
   },
+  themePreloadPlugin,
   tailwindcss(),
   solidPlugin(),
 ]