OmnisX does not have a user directory yet. Until it does, access is granted by whoever runs the deployment: they issue you a one-time code, and this page exchanges it for a session. There is no password to remember and nothing sensitive is stored in your browser.
On the OmnisX host, at a terminal:
python3 deploy/tools/omnisx-product-enrol.py
It reads the deployment's signing secret from the environment and refuses to run without it. The code it prints is not an OmnisX credential — it opens this surface and nothing else, and it is spent the moment it is used.