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/locales/zh/entry.json

@@ -57,7 +57,14 @@
     "submit": "登录",
     "missingFields": "请填写账号和密码",
     "failed": "登录失败",
-    "backEntry": "返回入口"
+    "backEntry": "返回入口",
+    "captcha": "验证码",
+    "captchaPlaceholder": "请输入验证码",
+    "captchaRequired": "请先加载验证码",
+    "captchaLoadFailed": "验证码加载失败，请重试",
+    "captchaLoading": "加载中…",
+    "captchaRefresh": "刷新验证码",
+    "captchaFetch": "点击获取"
   },
   "errors": {
     "noToken": "未发现授权令牌",