diff --git a/README.md b/README.md
index de3665e..c9f74f7 100644
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@@ -41,3 +41,27 @@ npm run dev
 npm run build
 ```
 
+## 🗺️ Roadmap / Open Topics
+
+Tracking known work that is not yet implemented. Each item is independently actionable.
+
+### Security
+
+- **Move JWT out of `localStorage`.** Today the token is stored under `localStorage["tbp_jwt"]`, which makes it readable by any script running on the page — a single XSS in an npm dependency exfiltrates every session. Switch to an httpOnly `Secure` `SameSite=Lax` cookie set by `tbp-auth-service` on login. The SPA no longer touches the token directly; the browser attaches it automatically to requests to `*.tbp.andreas-dahm.eu`. Requires coordinated changes in Auth (set the cookie) and Deployment (cookie domain + CORS `allowCredentials=true`).
+- **Add CSRF handling.** Once auth rides on a cookie, the SPA must echo a CSRF token in a header on state-changing requests. Spring Security's `CookieCsrfTokenRepository.withHttpOnlyFalse()` on the server pairs with a small `fetch` interceptor on the client that reads `XSRF-TOKEN` and sets `X-XSRF-TOKEN`.
+- **Content Security Policy.** Add a CSP header in `nginx.conf` so XSS exfiltration paths are blocked even if a vulnerability slips in. Minimum starting point: `default-src 'self'; img-src 'self' data: https://*.steamstatic.com; object-src 'none'; base-uri 'self'; frame-ancestors 'none'`. Tighten further by replacing inline styles/scripts (Tailwind is already build-time, so this should be feasible).
+
+### Testing
+
+The project has no test runner today. Suggested setup:
+
+- **Unit / component tests:** Vitest + React Testing Library. Tests live next to the component (`Component.test.jsx`).
+- **API mocking:** MSW (Mock Service Worker) so component tests don't hit the real backend and the same handlers can drive Storybook later.
+- **End-to-end tests:** Playwright, scoped to the golden paths (login → see library → log out, registration with invitation code, settings update). Run against the real `tbp-auth-service` + `tbp-core-service` via `docker-compose.dev.yml` in CI.
+- **First test targets:** the auth context / token-handling code, the dark-mode toggle (`localStorage["tbp_dark_mode"]`), and i18n string resolution.
+
+### Other
+
+- **Audit `localStorage` usage.** Currently used for `tbp_jwt` (planned to move) and `tbp_dark_mode`. Document any other keys before they accumulate.
+- **API base URL handling.** `VITE_API_URL` covers Auth; Core's base URL is implicit. Make both explicit (e.g. `VITE_AUTH_URL`, `VITE_API_URL`) so dev / prod / preview environments are unambiguous.
+