**Related issue:** Resolves#42240.
- [X] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
See [Changes
files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/guides/committing-changes.md#changes-files)
for more information.
## Testing
- [X] Added/updated automated tests
- [X] QA'd all new/changed functionality manually
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Statistics now include GitOps mode: whether it’s enabled and the
ordered list of configured exception categories (serializes as an empty
list when none).
* **Tests**
* Added tests for GitOps-related statistics transitions and made
statistics-timing tests deterministic for reliable behavior.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
