Fix nested scrollbar issue on keys page, add local data proxy

- Change root layout from min-h-screen to h-screen with overflow-hidden
  to properly constrain viewport height
- Add min-h-0 to main element to allow flex shrinking
- Add rewrite rule to proxy /data/* to production data URL for local dev
- Make output: "export" conditional (production only) since rewrites
  require server mode

next.config.ts

@@ -1,14 +1,23 @@
 import type { NextConfig } from "next";
 
 const basePath = process.env.NEXT_PUBLIC_BASE_PATH || "";
+const isDev = process.env.NODE_ENV === "development";
 
 const nextConfig: NextConfig = {
-  output: "export",
+  output: isDev ? undefined : "export",
   basePath,
   assetPrefix: basePath || undefined,
   env: {
     NEXT_PUBLIC_BUILD_TIME: new Date().toISOString(),
   },
+  async rewrites() {
+    return [
+      {
+        source: "/data/:path*",
+        destination: "https://codecolor.ist/entdb-data/:path*",
+      },
+    ];
+  },
 };
 
 export default nextConfig;

src/app/layout.tsx

@@ -35,11 +35,11 @@ export default function RootLayout({
         className={`${geistSans.variable} ${geistMono.variable} antialiased`}
       >
         <ThemeProvider attribute="class" defaultTheme="system" enableSystem>
-          <div className="flex flex-col min-h-screen">
+          <div className="flex flex-col h-screen overflow-hidden">
             <NavTop />
             <Toaster />
             <Suspense>
-              <main className="flex-1 flex flex-col">{children}</main>
+              <main className="flex-1 flex flex-col min-h-0">{children}</main>
             </Suspense>
             <Footer />
           </div>