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/features/draw/draw-status-meta.ts

@@ -1,5 +1,5 @@
 export type DrawStatusHud = {
-  label: string;
+  labelKey: string;
   /** Tailwind 颜色类：状态圆点 */
   dotClass: string;
   /** 文案条（如「距封盘」） */
@@ -18,26 +18,26 @@ export function isHallSealedCountdownUi(status: string): boolean {
 export function drawStatusHud(status: string): DrawStatusHud {
   switch (status) {
     case "pending":
-      return { label: "未开始", dotClass: "bg-muted-foreground", countdownKind: "none" };
+      return { labelKey: "draw.status.pending", dotClass: "bg-muted-foreground", countdownKind: "none" };
     case "open":
-      return { label: "可下注", dotClass: "bg-emerald-500", countdownKind: "close" };
+      return { labelKey: "draw.status.open", dotClass: "bg-emerald-500", countdownKind: "close" };
     case "closing":
-      return { label: "已封盘", dotClass: "bg-rose-500", countdownKind: "draw" };
+      return { labelKey: "draw.status.closing", dotClass: "bg-rose-500", countdownKind: "draw" };
     case "closed":
-      return { label: "待开奖", dotClass: "bg-amber-500", countdownKind: "draw" };
+      return { labelKey: "draw.status.closed", dotClass: "bg-amber-500", countdownKind: "draw" };
     case "drawing":
-      return { label: "开奖中", dotClass: "bg-sky-500", countdownKind: "none" };
+      return { labelKey: "draw.status.drawing", dotClass: "bg-sky-500", countdownKind: "none" };
     case "review":
-      return { label: "待审核", dotClass: "bg-violet-500", countdownKind: "none" };
+      return { labelKey: "draw.status.review", dotClass: "bg-violet-500", countdownKind: "none" };
     case "cooldown":
-      return { label: "冷静期", dotClass: "bg-cyan-500", countdownKind: "cooldown" };
+      return { labelKey: "draw.status.cooldown", dotClass: "bg-cyan-500", countdownKind: "cooldown" };
     case "settling":
-      return { label: "结算中", dotClass: "bg-blue-600", countdownKind: "none" };
+      return { labelKey: "draw.status.settling", dotClass: "bg-blue-600", countdownKind: "none" };
     case "settled":
-      return { label: "已结算", dotClass: "bg-muted-foreground", countdownKind: "none" };
+      return { labelKey: "draw.status.settled", dotClass: "bg-muted-foreground", countdownKind: "none" };
     case "cancelled":
-      return { label: "已取消", dotClass: "bg-muted-foreground", countdownKind: "none" };
+      return { labelKey: "draw.status.cancelled", dotClass: "bg-muted-foreground", countdownKind: "none" };
     default:
-      return { label: status, dotClass: "bg-muted-foreground", countdownKind: "none" };
+      return { labelKey: status, dotClass: "bg-muted-foreground", countdownKind: "none" };
   }
 }