Refactor middleware for better readability

**Description**
Currently data lacks proper sorting support.

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

**Priority**: Low/Medium

No file, entry point, or test is named. First locate the middleware and the code that produces or consumes the unsorted data, then inspect any existing ordering tests or behavior. Clarify the default order and configuration interface before making changes, and verify both default sorting and configured overrides.

Written by the indexing model from the issue text.