refactor(frontend): replace React Router BFF with Wouter SPA

Remove React Router 7 SSR/BFF architecture (server-side loaders,
actions, sessions, remix-auth) and replace with a client-side SPA
using Wouter for routing and cookie-based JWT auth.

- Replace reactRouter() Vite plugin with @vitejs/plugin-react
- Add index.html + app/main.tsx as SPA entry points
- Add Wouter routing with auth guards (ProtectedRoute/PublicOnlyRoute)
- Add client-side auth (app/auth.ts) and useAuth hook
- Migrate all route files to app/pages/ with client-side data fetching
- Update NavigateLink and GolfPlayAppGaming to use Wouter Link
- Remove .server/, routes/, root.tsx, react-router.config.ts
- Clean up tsconfig.json (remove .react-router references)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 108 insertions, 0 deletions

diff --git a/frontend/app/pages/DashboardPage.tsx b/frontend/app/pages/DashboardPage.tsx
new file mode 100644
index 0000000..c81014d
--- /dev/null
+++ b/frontend/app/pages/DashboardPage.tsx
@@ -0,0 +1,108 @@
+import { useEffect, useState } from "react";
+import { useLocation } from "wouter";
+import { createApiClient } from "../api/client";
+import type { components } from "../api/schema";
+import { getToken } from "../auth";
+import BorderedContainerWithCaption from "../components/BorderedContainerWithCaption";
+import NavigateLink from "../components/NavigateLink";
+import UserIcon from "../components/UserIcon";
+import { APP_NAME, BASE_PATH } from "../config";
+import { useAuth } from "../hooks/useAuth";
+import { usePageTitle } from "../hooks/usePageTitle";
+
+type Game = components["schemas"]["Game"];
+
+export default function DashboardPage() {
+	usePageTitle(`Dashboard | ${APP_NAME}`);
+
+	const { user, logout } = useAuth();
+	const [, navigate] = useLocation();
+
+	const [games, setGames] = useState<Game[]>([]);
+	const [loading, setLoading] = useState(true);
+
+	useEffect(() => {
+		const token = getToken();
+		if (!token) return;
+		const apiClient = createApiClient(token);
+		apiClient
+			.getGames()
+			.then(({ games }) => setGames(games))
+			.finally(() => setLoading(false));
+	}, []);
+
+	function handleLogout() {
+		logout();
+		navigate("/");
+	}
+
+	if (loading) {
+		return (
+			<div className="min-h-screen bg-gray-100 flex items-center justify-center">
+				<p className="text-gray-500">Loading...</p>
+			</div>
+		);
+	}
+
+	return (
+		<div className="p-6 bg-gray-100 min-h-screen flex flex-col items-center gap-4">
+			{user?.icon_path && (
+				<UserIcon
+					iconPath={user.icon_path}
+					displayName={user.display_name}
+					className="w-24 h-24"
+				/>
+			)}
+			<h1 className="text-3xl font-bold text-gray-800">{user?.display_name}</h1>
+			<BorderedContainerWithCaption caption="試合一覧">
+				<div className="px-4">
+					{games.length === 0 ? (
+						<p>エントリーできる試合はありません</p>
+					) : (
+						<ul className="divide-y divide-gray-300">
+							{games.map((game) => (
+								<li
+									key={game.game_id}
+									className="flex justify-between items-center py-2 gap-4"
+								>
+									<div>
+										<span className="font-medium text-gray-800">
+											{game.display_name}
+										</span>
+									</div>
+									<div className="flex gap-2">
+										<NavigateLink to={`/golf/${game.game_id}/play`}>
+											対戦
+										</NavigateLink>
+										<NavigateLink to={`/golf/${game.game_id}/watch`}>
+											観戦
+										</NavigateLink>
+									</div>
+								</li>
+							))}
+						</ul>
+					)}
+				</div>
+			</BorderedContainerWithCaption>
+			<button
+				type="button"
+				onClick={handleLogout}
+				className="px-4 py-2 bg-red-500 text-white rounded-sm transition duration-300 hover:bg-red-700 focus:ring-3 focus:ring-red-400 focus:outline-hidden"
+			>
+				ログアウト
+			</button>
+			{user?.is_admin && (
+				<a
+					href={
+						import.meta.env.DEV
+							? `http://localhost:8004${BASE_PATH}admin/dashboard`
+							: `${BASE_PATH}admin/dashboard`
+					}
+					className="text-lg text-white bg-sky-600 px-4 py-2 rounded-sm transition duration-300 hover:bg-sky-500 focus:ring-3 focus:ring-sky-400 focus:outline-hidden"
+				>
+					Admin Dashboard
+				</a>
+			)}
+		</div>
+	);
+}