implement foundation + room system (Plan 1 of 5)

Bun workspace monorepo with shared, server, client packages.
Server: Hono + @hono/node-ws, Drizzle + PostgreSQL, in-memory room manager
with WebSocket broadcasting, HTTP room creation, DB persistence layer.
Client: React 19 + Vite + Tailwind v4 + shadcn/ui, TanStack Router with
landing/display/host/player routes, Zustand store, WebSocket connection hook.
20 tests passing (room manager unit + WS integration).

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

tsconfig.json

@@ -0,0 +1,19 @@
+{
+	"compilerOptions": {
+		"target": "ES2022",
+		"module": "ESNext",
+		"moduleResolution": "bundler",
+		"strict": true,
+		"esModuleInterop": true,
+		"skipLibCheck": true,
+		"forceConsistentCasingInFileNames": true,
+		"resolveJsonModule": true,
+		"isolatedModules": true,
+		"declaration": true,
+		"declarationMap": true,
+		"sourceMap": true,
+		"noUncheckedIndexedAccess": true,
+		"noUnusedLocals": true,
+		"noUnusedParameters": true
+	}
+}