feat: 接入玩家入口与API代理

- 新增 /api 重写代理，支持 LOTTERY_API_PROXY_TARGET 配置
- 玩家首页切换为 EntryGate，并移除 layout 对 PlayerAppShell 的包裹
- 请求层拆分语言头与玩家鉴权注入逻辑，引入 zustand 依赖
- 允许提交 .env.example 供本地配置参考

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

@@ -0,0 +1,24 @@
+import {
+  Card,
+  CardContent,
+  CardDescription,
+  CardHeader,
+  CardTitle,
+} from "@/components/ui/card";
+
+/** 下注大厅占位（§4.2 再接表格与期号） */
+export default function LotteryHallPlaceholderPage() {
+  return (
+    <Card>
+      <CardHeader>
+        <CardTitle>下注大厅</CardTitle>
+        <CardDescription>
+          路由已打通；玩法表格、期号与余额将在此页迭代。
+        </CardDescription>
+      </CardHeader>
+      <CardContent className="text-sm text-muted-foreground">
+        从入口页授权成功后可刷新本页；鉴权头会从会话存储恢复。
+      </CardContent>
+    </Card>
+  );
+}

src/app/(player)/(main)/layout.tsx

@@ -0,0 +1,15 @@
+import { PlayerAppShell } from "@/components/layout/player-app-shell";
+import { HydratePlayerAuth } from "@/features/player/hydrate-player-auth";
+
+export default function PlayerMainLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  return (
+    <>
+      <HydratePlayerAuth />
+      <PlayerAppShell>{children}</PlayerAppShell>
+    </>
+  );
+}

src/app/(player)/layout.tsx

@@ -1,9 +1,7 @@
-import { PlayerAppShell } from "@/components/layout/player-app-shell";
-
-export default function PlayerLayout({
+export default function PlayerRootLayout({
   children,
 }: Readonly<{
   children: React.ReactNode;
 }>) {
-  return <PlayerAppShell>{children}</PlayerAppShell>;
+  return children;
 }

src/app/(player)/page.tsx

@@ -1,23 +1,20 @@
-import {
-  Card,
-  CardContent,
-  CardDescription,
-  CardHeader,
-  CardTitle,
-} from "@/components/ui/card";
+import type { ReactNode } from "react";
+import { Suspense } from "react";
 
-export default function PlayerHomePage() {
+import { EntryGate } from "@/features/player/entry-gate";
+
+function EntryFallback(): ReactNode {
   return (
-    <Card>
-      <CardHeader>
-        <CardTitle>玩家端</CardTitle>
-        <CardDescription>
-          基础 layout 已就绪；后续在此挂钱包、大厅等路由。
-        </CardDescription>
-      </CardHeader>
-      <CardContent className="text-sm text-muted-foreground">
-        顶栏与主区域宽度由 PlayerAppShell 统一控制。
-      </CardContent>
-    </Card>
+    <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>
+    </div>
+  );
+}
+
+export default function EntryPage() {
+  return (
+    <Suspense fallback={<EntryFallback />}>
+      <EntryGate />
+    </Suspense>
   );
 }