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, 78 insertions, 0 deletions

diff --git a/frontend/app/pages/GolfWatchPage.tsx b/frontend/app/pages/GolfWatchPage.tsx
new file mode 100644
index 0000000..317f860
--- /dev/null
+++ b/frontend/app/pages/GolfWatchPage.tsx
@@ -0,0 +1,78 @@
+import { Provider as JotaiProvider, createStore } from "jotai";
+import { useEffect, useMemo, useState } from "react";
+import { useLocation } from "wouter";
+import { ApiClientContext, createApiClient } from "../api/client";
+import type { components } from "../api/schema";
+import { getToken } from "../auth";
+import GolfWatchApp from "../components/GolfWatchApp";
+import { APP_NAME } from "../config";
+import { usePageTitle } from "../hooks/usePageTitle";
+
+type Game = components["schemas"]["Game"];
+type LatestGameState = components["schemas"]["LatestGameState"];
+type RankingEntry = components["schemas"]["RankingEntry"];
+
+export default function GolfWatchPage({ gameId }: { gameId: string }) {
+	const [, navigate] = useLocation();
+
+	const [game, setGame] = useState<Game | null>(null);
+	const [ranking, setRanking] = useState<RankingEntry[]>([]);
+	const [gameStates, setGameStates] = useState<{
+		[key: string]: LatestGameState;
+	}>({});
+	const [loading, setLoading] = useState(true);
+
+	const gameIdNum = Number(gameId);
+
+	usePageTitle(
+		game
+			? `Golf Watching ${game.display_name} | ${APP_NAME}`
+			: `Golf Watching | ${APP_NAME}`,
+	);
+
+	useEffect(() => {
+		const token = getToken();
+		if (!token) return;
+		const apiClient = createApiClient(token);
+		Promise.all([
+			apiClient.getGame(gameIdNum),
+			apiClient.getGameWatchRanking(gameIdNum),
+			apiClient.getGameWatchLatestStates(gameIdNum),
+		])
+			.then(([{ game }, { ranking }, { states }]) => {
+				setGame(game);
+				setRanking(ranking);
+				setGameStates(states);
+			})
+			.catch(() => navigate("/dashboard"))
+			.finally(() => setLoading(false));
+	}, [gameIdNum, navigate]);
+
+	const store = useMemo(() => {
+		if (!game) return null;
+		return createStore();
+	}, [game]);
+
+	if (loading || !game || !store) {
+		return (
+			<div className="min-h-screen bg-gray-100 flex items-center justify-center">
+				<p className="text-gray-500">Loading...</p>
+			</div>
+		);
+	}
+
+	const token = getToken()!;
+
+	return (
+		<JotaiProvider store={store}>
+			<ApiClientContext.Provider value={createApiClient(token)}>
+				<GolfWatchApp
+					key={game.game_id}
+					game={game}
+					initialGameStates={gameStates}
+					initialRanking={ranking}
+				/>
+			</ApiClientContext.Provider>
+		</JotaiProvider>
+	);
+}