feat: enhance player login process with captcha validation and improve wallet display logic

- Added captcha validation to the player login screen, requiring users to input a captcha code for authentication.
- Implemented a new API call to fetch captcha images, improving security during login.
- Updated wallet display logic to ensure accurate representation of available and total balances based on player funding modes.
- Enhanced documentation in AGENTS.md to clarify changes in credit flow and login requirements.

src/i18n/index.ts

@@ -72,7 +72,7 @@ export function syncPreferredLanguage(): void {
 }
 
 if (!i18n.isInitialized) {
-  void i18n.use(initReactI18next).init({
+  i18n.use(initReactI18next).init({
     resources,
     fallbackLng: DEFAULT_LANGUAGE,
     supportedLngs: ["en", "ne", "zh"],
@@ -81,6 +81,7 @@ if (!i18n.isInitialized) {
     /** 与 SSR 一致：首屏固定默认语言，hydration 后再由 syncPreferredLanguage 切换 */
     load: "languageOnly",
     lng: DEFAULT_LANGUAGE,
+    initAsync: false,
 
     interpolation: {
       escapeValue: false,