fix: replace nested Routes with useLocation, remove pushState+reload, add debug logs

- ProfileRoutes: removed nested <Routes> in favor of useLocation()/useNavigate()
  with strict allowlist for /profile/me and /profile/me/edit
- ProfileComponentWrapper: replaced pushState()+reload() with navigate()
- useApi: log 401 and non-401 errors
- contexts.tsx: log fetchCurrentUser lifecycle and auth:unauthorized events
- axios.ts: log auth server 401s

react-auth/axios.ts

@@ -17,7 +17,9 @@ export function attachAuthInterceptors(client: AxiosInstance) {
     (res) => res,
     (error) => {
       if (error.response?.status === 401) {
+        console.log("[authAxios] 401 from %s %s", error.config?.method, error.config?.url);
         tokenStore.clear();
+        window.dispatchEvent(new CustomEvent("auth:unauthorized"));
       }
       return Promise.reject(error);
     }