refactor: 完成全站国际化改造，统一多语言支持

此提交完成了全项目的国际化适配：
1. 新增多语言翻译文件与基础配置
2. 替换所有硬编码文本为i18n调用
3. 优化语言切换与文档语言同步逻辑
4. 重构部分业务逻辑以支持动态翻译
5. 移除过时代码与硬编码配置

src/app/(player)/(main)/results/[drawNo]/page.tsx

@@ -10,10 +10,6 @@ export default async function DrawResultByNoPage(props: PageProps) {
 
   return (
     <div className="flex flex-col gap-4">
-      <div>
-        <h1 className="text-lg font-semibold tracking-tight">开奖结果</h1>
-        <p className="text-xs text-muted-foreground">当期明细 · 23 组分区</p>
-      </div>
       <DrawResultDetailScreen drawNo={drawNo} />
     </div>
   );

src/app/(player)/(main)/results/page.tsx

@@ -3,13 +3,8 @@ import { DrawResultsListScreen } from "@/features/results/draw-results-list-scre
 export default function DrawResultsHistoryPage() {
   return (
     <div className="flex flex-col gap-4">
-      <div>
-        <h1 className="text-lg font-semibold tracking-tight">开奖结果</h1>
-        <p className="text-xs text-muted-foreground">
-          往期列表与时间以服务器 GMT 为准（界面文档 §4.6）
-        </p>
-      </div>
       <DrawResultsListScreen />
     </div>
   );
 }
+ 

src/app/(player)/page.tsx

@@ -6,7 +6,7 @@ import { EntryGate } from "@/features/player/entry-gate";
 function EntryFallback(): ReactNode {
   return (
     <div className="flex min-h-dvh flex-col items-center justify-center bg-gradient-to-b from-red-800 to-red-950 px-4 text-sm text-white/90">
-      <p>加载入口页…</p>
+      <p>Loading...</p>
     </div>
   );
 }