feat(registration): no invite code, request text

README.md

@@ -85,6 +85,8 @@ To Be Played is split into three repositories:
 - **Language**: kept in the browser and saved in Auth; after the login Auth's language wins when one is saved. Dark
   mode stays per device. The registration sends the browser language (`de` for a German browser, else `en`): Auth
   writes its mails in it and saves it as the user's language.
+- **Registration** (`/register`): no invite code; the page says that an admin checks each new account and stays on
+  "registration sent" after the send. Auth answers `409 PENDING_LIMIT_REACHED` while 20 wait.
 - **Broken pictures**: a Steam cover or achievement icon that does not load shows a placeholder and is reported
   to Core once per page load (`POST /api/library/broken-images`, only with a session). Core repairs it at night;
   a repaired cover comes back as `imageUrl`.