[PLAT-7588] Add file download action in dev dashboard

[danschultz]

Summary

• add a new dashboard API route to request file download presigned URLs
• add a download action in each file row that opens the returned URL
• keep file details drawer unchanged for v1

Implementation notes

• new route: POST /api/files/[id]/download-url
• route uses session client (getClientFromSession) and files.createDownloadUrl
• uses 30-second expiry and returns attributes.uri with fallback to deprecated downloadUrl
• UI prevents row-click side effects when download action is clicked
• UI shows an error snackbar when URL creation fails

Testing

• yarn lint
• yarn build

Risks/rollout

• relies on browser navigation to presigned URL for download start behavior
• if popup/new-tab is blocked, same-tab navigation fallback is used

https://vertexvis.atlassian.net/browse/PLAT-7588

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
vertex-dev-dashboard	Ready	Preview, Comment	Apr 7, 2026 8:33pm

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud