Enable password self-registration and keep SSO off.

Public sign-up was closed, and the live Google and Microsoft apps would have become sign-up buttons if the same flag turned both on.

README.md

@@ -97,7 +97,8 @@ with `COMPOSE_DATABASE_URL` if needed.
 | `SEARXNG_BASE_URL` | `http://127.0.0.1:8088` | yes if using SearxNG | Self-hosted SearxNG JSON API |
 | `EMAIL_HOST_*` | empty | yes (prod/beta) | SMTP2GO |
 | `CAPTCHA_SECRET_KEY` | empty | recommended | |
-| `ENABLE_ACCOUNT_REGISTRATION` | `false` | optional | Self-serve sign-up; keep false until ready |
+| `ENABLE_ACCOUNT_REGISTRATION` | `true` | optional | Password self-serve sign-up. Set `false` to close it |
+| `ENABLE_SSO` | `false` | optional | Google / Microsoft sign-in and sign-up. Drive linking does not need this |
 | `STRIPE_SECRET_KEY` / `STRIPE_PUBLISHABLE_KEY` / `STRIPE_WEBHOOK_SECRET` | empty | yes for billing | Stripe API + webhook (`monetization` app) |
 | `APPLE_IAP_BUNDLE_ID` | `ai.hesychia.chat` | yes for iOS IAP | Must match the signed StoreKit transaction |
 | `GOOGLE_PLAY_PACKAGE_NAME` | `ai.hesychia.chat` | yes for Play IAP | Android application id |