Log connection string and hide the password

Logging the connection string would be useful for debugging, but we need to make sure user’s password is not logged. The suggestion would be parsing the connection string, then log the parsed content.

AC:

- log connection string
- ensure that user’s password is not logged

Search the repository for the connection-string parsing and logging entry points, then trace how connection details are currently represented. Implement logging that includes the connection string while excluding the user's password, and verify both acceptance criteria with the relevant existing tests or checks.

Written by the indexing model from the issue text.