feat(web): phone registration + fix login/register response handling

- Add RegisterPage (phone + SMS code) and lib/api/auth.ts verification-code
  endpoints, wired into App.tsx routing.
- Fix registerAccountByPhone(): the injected acc.phone extra field must be
  bare 11-digit, not E.164 -- server checks digit length before normalizing.
- Fix LoginCtrl shape: SDK's login/loginBasic/createAccountBasic promises
  resolve with the ctrl fields flat, not wrapped in {ctrl: {...}}.
- Fix tinode-sdk.d.ts: the real method is getCurrentUserID(), there is no
  getAuthenticatedUserID().

All three bugs found and fixed via live testing against the real backend
(api.118im.com, tenant "default"), confirming registration and login both
work end-to-end.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

web/src/App.tsx

@@ -5,6 +5,7 @@ import { AppShell } from '@/app/AppShell';
 import { RequireAuth } from '@/app/RequireAuth';
 import { SectionPlaceholder } from '@/app/SectionPlaceholder';
 import { LoginPage } from '@/features/auth/LoginPage';
+import { RegisterPage } from '@/features/auth/RegisterPage';
 import { TenantEntryPage } from '@/features/auth/TenantEntryPage';
 import { ConversationView } from '@/features/messages/ConversationView';
 import { EmptyMain } from '@/features/messages/EmptyMain';
@@ -15,6 +16,7 @@ const queryClient = new QueryClient();
 const router = createBrowserRouter([
   { path: 'tenant', element: <TenantEntryPage /> },
   { path: 'login', element: <LoginPage /> },
+  { path: 'register', element: <RegisterPage /> },
   {
     element: <RequireAuth />,
     children: [