Session flow
Continue to secure sign in.
Continue starts a short secure sign-in checkpoint and returns to identitas for local session creation.
Environment ready
Identity config is loaded.
The required identity env vars are present, so the login route can start the secure sign-in flow and the register route can create preregistration state before the credential checkpoint.
If sign-in still fails, the next thing to check is the identity authority client configuration and the runtime logs for `/auth/login` and `/auth/callback`.