feat(os): add CleanStart OS support

[cleanstart-community-admin]

Description

Adds CleanStart OS as a supported distribution in the Trivy scanner.

CleanStart is a container-optimized Linux distribution using APK package management. It uses ID=clnstrt in /etc/os-release today, with ID=cleanstart planned — both identifiers are handled. The OS family is reported as cleanstart in scan output regardless of which identifier is present.

Changes:

• pkg/fanal/types/const.go — added CleanStart OSType = "cleanstart" constant, appended to OSTypes slice
• pkg/fanal/analyzer/os/release/release.go — added "clnstrt", "cleanstart" cases to idToOSFamily() to handle both identifiers during ongoing transition
• pkg/detector/ospkg/detect.go — registered ftypes.CleanStart: cleanstart.NewScanner() in the drivers map
• pkg/detector/ospkg/cleanstart/cleanstart.go (new) — APK-based vulnerability scanner; IsSupportedVersion always returns true as CleanStart is a rolling release
• docs/guide/coverage/os/cleanstart.md (new) — OS coverage documentation
• docs/guide/coverage/os/index.md — added CleanStart to supported OS table
• docs/guide/scanner/vulnerability.md — added CleanStart data source
• mkdocs.yml — added CleanStart to navigation

Before:

After:

Related PRs

• vuln-list-update PR
• trivy-db PR

Checklist

• I've read the guidelines for contributing to this repository.
• I've followed the conventions in the PR title.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).

[cleanstart-community-admin]

Hi @DmitriyLewen @knqyf263

I wanted to kindly request you to review my PR when you have a moment. Please let me know if there’s anything further required from my side.

Regards
Cleanstart Community Admin

[cleanstart-community-admin]

Hello @DmitriyLewen @knqyf263,

I just wanted to follow up on my previous message. Please let me know if there are any updates or if any additional information is needed from our side.

Thank you!

[DmitriyLewen]

Hello @cleanstart-community-admin
We are currently busy recovering from the incident.
Once we have recovered and established our priorities — we will get to reviewing this PR.

We appreciate your understanding and patience.

Regards, Dmitriy