Add Primuse to client app catalog

[chenqi92]

Summary

• add Primuse as a free, open-source OpenSubsonic/Navidrome client
• list its iOS, macOS, and tvOS App Store availability
• add optimized WebP screenshots for the app catalog

Validation

• npm run validate:app primuse
• Hugo production build

[strix-security]

Strix Security Review

Warning

This pull request has 1 commit after the last Strix review (a62837f). Strix has not reviewed these changes.
Automatic review on push is off for this repository. To review the latest changes, tag @strix-security in a comment, or turn on re-review on push.

No security issues found.

_{Updated for a62837f.}

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Reviewed by Strix
_{Re-run review · Configure security review settings}

[github-actions]

Preview Deployment

Status	URL
✅ Deployed	pr-434.navidrome-website.pages.dev

Built from a62837f

[github-actions]

App Validation Results

Validation run: 2026-09-01 18:15:59 UTC

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Validating: primuse

App: primuse
Status: PASSED ✅

✅ Validation passed

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✅ All validations passed!

[deluan]

Thanks, please check comment

[deluan]

Thanks! One fix needed.

Master now requires pricing and dropped isFree, so validation fails on an up-to-date branch. In assets/apps/primuse/index.yaml, swap isFree: true for pricing: free, then rebase on master.