[Feature]: As a user, I would to have an account, so the application keeps track of my info and knows where to send alerts.

### Problem to solve

No user accounts

### Desired outcome

either have the app ask the user to login with the browser account or make a new one, so it can have email or phone number saved for alerts.

### Proposed solution

_No response_

### Alternatives considered

_No response_

### Additional context

_No response_

### Before submitting

- [x] I searched existing issues and did not find an equivalent request.

No files, tests, or entry points are named. First clarify whether authentication should use the browser account or a new account system, and how email or phone data will be stored and used for alerts. Done should include an agreed account flow and persisted contact information that can receive alerts.

Written by the indexing model from the issue text.