**Related issue:** Fully resolves https://github.com/fleetdm/fleet/issues/34591. ## Testing - [X] QA'd all new/changed functionality manually. <img width="533" height="454" alt="Screenshot 2026-07-03 at 10 40 37 AM" src="https://github.com/user-attachments/assets/892fb548-21c6-467c-b270-65f1c9338fdc" /> <img width="1287" height="259" alt="Screenshot 2026-07-03 at 10 41 55 AM" src="https://github.com/user-attachments/assets/d3528b0c-0d05-4ace-8512-ab363241b97c" /> <img width="1077" height="123" alt="Screenshot 2026-07-03 at 10 41 46 AM" src="https://github.com/user-attachments/assets/249e80de-320c-48f3-962a-59c98c736c54" /> <img width="725" height="208" alt="Screenshot 2026-07-03 at 10 41 32 AM" src="https://github.com/user-attachments/assets/361764cf-26fc-4a44-b5d6-489d883a392b" /> <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit * **New Features** * Added CachyOS Linux to rolling-release OS detection and reporting. * Added a CachyOS fleetd package/image variant and a new CachyOS fleetd service for local testing. * **Bug Fixes** * Improved rolling-release OS version labeling for host “Vitals” display. * Updated OS inventory normalization so CachyOS is aggregated with Arch Linux, including correct “rolling” version handling. * **Tests** * Expanded OS version ingest test coverage for rolling-release and CachyOS scenarios. <!-- end of auto-generated comment: release notes by coderabbit.ai -->