feat: 增强国际化支持与安全头配置

- 在 .env.example 中新增 i18next 相关配置项以支持多语言功能
- 在 next.config.ts 中添加安全头配置以支持 iframe 嵌入
- 更新 Providers 组件以引入 i18n 配置
- 在 PlayerAppShell 中集成 LanguageSwitcher 组件以实现语言切换功能
- 优化 HallWalletStrip 组件的网络状态管理逻辑
- 更新多个组件以支持国际化文本

src/i18n/locales/en/entry.json

@@ -0,0 +1,65 @@
+{
+  "header": {
+    "backgroundAlt": "Header background"
+  },
+  "loading": {
+    "title": "Loading lottery hall",
+    "progress": "Progress"
+  },
+  "steps": {
+    "token": {
+      "title": "Checking token",
+      "description": "Verifying your session securely."
+    },
+    "account": {
+      "title": "Creating account",
+      "description": "Setting up your account."
+    },
+    "hall": {
+      "title": "Loading lottery hall",
+      "description": "Preparing the lottery hall."
+    }
+  },
+  "messages": {
+    "initializing": "Initializing…",
+    "retrying": "Retrying…",
+    "verifying": "Verifying session…",
+    "connectingHall": "Connecting to lottery hall…",
+    "ready": "Ready",
+    "retryProgress": "Retrying ({{current}}/{{total}})…"
+  },
+  "failure": {
+    "title": "Authorization failed",
+    "subtitle": "We couldn’t authorize your session. Please try again.",
+    "detailsTitle": "Failure details",
+    "table": {
+      "no": "No.",
+      "check": "Check",
+      "reason": "Reason"
+    },
+    "reenter": "Re-enter"
+  },
+  "success": {
+    "title": "Authorization successful!",
+    "subtitle": "Your session has been verified successfully.",
+    "doneLabel": "Done",
+    "continue": "Continue to lottery hall"
+  },
+  "footer": {
+    "secure": "Secure. Trusted. Authorized access."
+  },
+  "errors": {
+    "noToken": "No authorization token found",
+    "noTokenDetail": "Please return to the main site and try again.",
+    "authFailed": "Authorization failed",
+    "unknown": "Unknown error",
+    "network": "Network error occurred",
+    "networkDetail": "Please check your internet connection and try again.",
+    "maxRetries": "Unable to connect after multiple attempts",
+    "maxRetriesDetail": "The server may be temporarily unavailable.",
+    "tryLater": "Please try again later",
+    "http401": "Token is invalid or expired",
+    "http403": "Account has been blocked",
+    "http404": "Account not found in the system"
+  }
+}