feat(i18n): initialize internationalization and update Vite config for locale handling

- Added `initI18n` function call in `main.tsx` to bootstrap internationalization before rendering the app.
- Updated Vite configuration to handle specific locale files for English and Chinese.

src/handlers/accounts.ts

@@ -808,12 +808,18 @@ async function apiKey(request: Request, env: Env, userId: string, rotate: boolea
 // Generate a random alphanumeric string of the given length using crypto.getRandomValues.
 function randomStringAlphanum(length: number): string {
   const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
-  const array = new Uint8Array(length);
-  crypto.getRandomValues(array);
-
   let result = '';
-  for (let i = 0; i < length; i++) {
-    result += chars[array[i] % chars.length];
+  const maxUnbiased = Math.floor(256 / chars.length) * chars.length;
+  const bytes = new Uint8Array(Math.max(16, length));
+
+  while (result.length < length) {
+    crypto.getRandomValues(bytes);
+    for (const value of bytes) {
+      if (value >= maxUnbiased) continue;
+      result += chars[value % chars.length];
+      if (result.length >= length) break;
+    }
   }
+
   return result;
 }