refactor(frontend): lint, one session guard, one request helper, one user context

src/utils/settings.js

@@ -22,10 +22,12 @@ export const cacheLanguage = (language) => {
     }
 };
 
+export const ME_URL = () => `${import.meta.env.VITE_API_URL}/api/users/me?v=1`;
+
 /**
  * GET /api/users/me on Auth. The caller handles the response status.
  */
-export const fetchMe = () => apiFetch(`${import.meta.env.VITE_API_URL}/api/users/me?v=1`, {
+export const fetchMe = () => apiFetch(ME_URL(), {
     signal: AbortSignal.timeout(REQUEST_TIMEOUT_MS),
 });