Create Public Utility account

As a Public Utility user I want to be able to
- log in the app
- add/edit/delete updates (logs should be kept and made visible for all users to prevent misleading information)
- edit my public utility profile
- view stats about the usage of the app (how many people/hood)
- delete my account

The issue names no files, tests, or entry points. Start by identifying the existing account and authentication flows in the Java repository, then trace support for profiles, update logs, usage statistics, and account deletion. Done means all listed Public Utility capabilities work together with visible update history and appropriate account removal.

Written by the indexing model from the issue text.