feat: 集成网络连接管理与降级轮询功能

- 在 PlayerAppShell 中引入 NetworkStatusBanner 组件以显示网络状态
- 在 HallBettingGrid 中实现下注后触发钱包轮询
- 在 HallWalletStrip 中添加网络连接状态管理与定期刷新逻辑
- 在 useHallDrawLive 中集成 WebSocket 连接状态与降级轮询机制，确保在断开时自动切换到轮询模式

src/components/layout/player-app-shell.tsx

@@ -1,6 +1,7 @@
 import Link from "next/link";
 import type { ReactNode } from "react";
 
+import { NetworkStatusBanner } from "@/components/network-status-banner";
 import { PlayerBottomNav } from "@/components/layout/player-bottom-nav";
 import { PlayerSessionBar } from "@/features/player/player-session-bar";
 
@@ -15,6 +16,7 @@ type PlayerAppShellProps = {
 export function PlayerAppShell({ children }: PlayerAppShellProps): ReactNode {
   return (
     <div className="flex min-h-dvh flex-col bg-background text-foreground">
+      <NetworkStatusBanner />
       <header className="sticky top-0 z-40 shrink-0 border-b border-border bg-background/95 backdrop-blur-sm supports-[backdrop-filter]:bg-background/80">
         <div className="mx-auto flex h-12 max-w-lg items-center gap-2 px-4">
           <Link