Refactor auth for better readability

**Description**
Currently models lacks proper pagination support.

**Proposed solution**
Add configurable pagination with sensible defaults.

**Priority**: Low/Medium

The issue names no files, tests, or entry points. First clarify whether the goal is auth readability or model pagination, including the configurable behavior and sensible defaults. Done means the agreed scope is implemented and covered by the relevant project checks.

Written by the indexing model from the issue text.