feat: add production deployment config

- Add docker-compose.prod.yml and Caddyfile for Caddy reverse proxy
- Add production stages to frontend Dockerfile (nginx for static files)
- Fix monorepo package exports for production builds (dist/src paths)
- Add CORS_ORIGIN env var for cross-origin config
- Add Better Auth baseURL, cookie domain, and trusted origins from env
- Use VITE_API_URL for API calls in auth-client and play route
- Add credentials: include for cross-origin fetch requests
- Remove unused users table from schema

apps/web/src/routes/login.tsx

@@ -20,7 +20,7 @@ const LoginPage = () => {
         onClick={() =>
           signIn.social({
             provider: "github",
-            callbackURL: "http://localhost:5173",
+            callbackURL: window.location.origin,
           })
         }
       >
@@ -31,7 +31,7 @@ const LoginPage = () => {
         onClick={() =>
           signIn.social({
             provider: "google",
-            callbackURL: "http://localhost:5173",
+            callbackURL: window.location.origin,
           })
         }
       >