Frontend: production image, security headers, SEO metadata and resolution state (#1439-#1442) - #1492

Process completed with exit code 1.

package-lock.json is out of sync with package.json. Run 'npm install' in frontend/ and commit the lock.

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-node@v4, actions/upload-artifact@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

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