fix: lighthouse fixes

frontend/index.html

@@ -9,6 +9,10 @@
     <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
     <meta name="apple-mobile-web-app-title" content="Tinyauth" />
     <meta name="robots" content="nofollow, noindex" />
+    <meta
+      name="description"
+      content="The tiniest authentication and authorization server you have ever seen."
+    />
     <link rel="manifest" href="/site.webmanifest" />
     <title>Tinyauth</title>
   </head>

frontend/src/components/language/language.tsx

@@ -21,7 +21,7 @@ export const LanguageSelector = () => {
 
   return (
     <Select onValueChange={handleSelect} value={language}>
-      <SelectTrigger>
+      <SelectTrigger aria-label="Select language">
         <SelectValue placeholder="Select language" />
       </SelectTrigger>
       <SelectContent>

frontend/src/main.tsx

@@ -23,6 +23,7 @@ import { TooltipProvider } from "@/components/ui/tooltip";
 const queryClient = new QueryClient();
 
 createRoot(document.getElementById("root")!).render(
+  <main>
     <StrictMode>
       <QueryClientProvider client={queryClient}>
         <AppContextProvider>
@@ -57,5 +58,6 @@ createRoot(document.getElementById("root")!).render(
           </UserContextProvider>
         </AppContextProvider>
       </QueryClientProvider>
-  </StrictMode>,
+    </StrictMode>
+  </main>,
 );

frontend/vite.config.ts

@@ -52,6 +52,11 @@ export default defineConfig({
         changeOrigin: true,
         rewrite: (path) => path.replace(/^\/\.well-known/, ""),
       },
+      "/robots.txt": {
+        target: "http://tinyauth-backend:3000/robots.txt",
+        changeOrigin: true,
+        rewrite: (path) => path.replace(/^\/robots.txt/, ""),
+      },
     },
     allowedHosts: true,
   },

internal/middleware/ui_middleware.go

@@ -46,6 +46,11 @@ func (m *UIMiddleware) Middleware() gin.HandlerFunc {
 		case "api", "resources", ".well-known":
 			c.Next()
 			return
+		case "robots.txt":
+			c.Writer.Header().Set("Content-Type", "text/plain")
+			c.Writer.WriteHeader(http.StatusOK)
+			c.Writer.Write([]byte("User-agent: *\nDisallow: /\n"))
+			return
 		default:
 			_, err := fs.Stat(m.uiFs, path)