refactor: build/runtime/client configs

app/page.tsx

@@ -1,12 +1,29 @@
 import { Analytics } from "@vercel/analytics/react";
 
 import { Home } from "./components/home";
+import { getServerSideConfig } from "./config/server";
+import { RUNTIME_CONFIG_DOM } from "./constant";
+
+const serverConfig = getServerSideConfig();
+
+// Danger! Don not write any secret value here!
+// 警告！不要在这里写入任何敏感信息！
+const DANGER_CONFIG = {
+  needCode: serverConfig?.needCode,
+};
+
+declare global {
+  type DangerConfig = typeof DANGER_CONFIG;
+}
 
 export default function App() {
   return (
     <>
+      <div style={{ display: "none" }} id={RUNTIME_CONFIG_DOM}>
+        {JSON.stringify(DANGER_CONFIG)}
+      </div>
       <Home />
-      <Analytics />
+      {serverConfig?.isVercel && <Analytics />}
     </>
   );
 }