Refactor routes for better readability

**Feature request**
It would be great to have retry for auth.

**Use case**
Many users need this functionality for production deployments.

**Implementation idea**
Add a new config option `enable_retry` with default `false`.

Start by locating the authentication flow and configuration loading in the repository; the issue does not name specific files or tests. Trace where authentication failures are handled and determine how the new enable_retry option should affect that path. Done means the option defaults to false and retry behavior is covered by appropriate verification.

Written by the indexing model from the issue text.