Fix download request as csv

[lucanovera]

Ticket ENG-2302

Description Of Changes

Reimplements the csv download functionality for the new request manager.

Code Changes

• Add download csv functionality in a hook

Steps to Confirm

1. Login to admin-ui and go to Request manager
2. Click the download icon in the header of the list
3. Check the file downloads, the filename is privacy-request-report.csv and that the row count matches the results shown in the screen
4. Use the header filters to filter results, download again and check the row count matches

Pre-Merge Checklist

• Issue requirements met
• All CI pipelines succeeded
• CHANGELOG.md updated
  • Add a db-migration This indicates that a change includes a database migration label to the entry if your change includes a DB migration
  • Add a high-risk This issue suggests changes that have a high-probability of breaking existing code label to the entry if your change includes a high-risk change (i.e. potential for performance impact or unexpected regression) that should be flagged
  • Updates unreleased work already in Changelog, no new entry necessary
• UX feedback:
  • All UX related changes have been reviewed by a designer
  • No UX review needed
• Followup issues:
  • Followup issues created
  • No followup issues
• Database migrations:
  • Ensure that your downrev is up to date with the latest revision on main
  • Ensure that your downgrade() migration is correct and works
    • If a downgrade migration is not possible for this change, please call this out in the PR description!
  • No migrations
• Documentation:
  • Documentation complete, PR opened in fidesdocs
  • Documentation issue created in fidesdocs
  • If there are any new client scopes created as part of the pull request, remember to update public-facing documentation that references our scope registry
  • No documentation updates required

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Project	Deployment	Review	Updated (UTC)
fides-plus-nightly	Ready	Preview, Comment	Jan 7, 2026 4:38pm

1 Skipped Deployment

Project	Deployment	Review	Updated (UTC)
fides-privacy-center	Ignored		Jan 7, 2026 4:38pm

[greptile-apps]

Greptile Summary

This PR refactors the CSV download functionality for privacy requests by extracting the logic into a reusable custom hook. The implementation consolidates the download, error handling, blob management, and success messaging into useDownloadPrivacyRequestReport, removing inline logic from the dashboard component. The hook follows established patterns from similar download features (manual tasks, consent reporting) and properly exports the SearchFilterParams type for reuse.

• Extracts download logic into dedicated custom hook (useDownloadPrivacyRequestReport)
• Consolidates error handling using getErrorMessage helper
• Properly manages blob lifecycle with cleanup (revokeObjectURL)
• Uses useMessage from fidesui for toast notifications
• Follows patterns from existing download hooks in the codebase
• Exports SearchFilterParams interface for type reuse in hook

Confidence Score: 5/5

• This PR is safe to merge with no functional or security concerns
• The PR involves a straightforward refactoring that extracts existing download logic into a reusable hook. The implementation properly handles blob creation and cleanup, uses established error handling patterns with getErrorMessage, and follows conventions from similar download features already in the codebase. The type export is minimal and non-breaking. CI has passed and the changes align with established patterns in the privacy requests module.
• No files require special attention

Important Files Changed

Filename	Overview
clients/admin-ui/src/features/privacy-requests/dashboard/PrivacyRequestsDashboard.tsx	Refactored to extract download logic into custom hook, removing inline message handling and RTK Query usage. Import cleanup and simplified component logic. No functional issues found.
clients/admin-ui/src/features/privacy-requests/dashboard/hooks/useDownloadPrivacyRequestReport.ts	New hook properly encapsulates CSV download logic including blob handling, cleanup, and error/success messaging. Follows existing patterns from similar download hooks in the codebase (manual tasks, consent reporting).
clients/admin-ui/src/features/privacy-requests/privacy-requests.slice.ts	Exports SearchFilterParams interface to allow type reuse in the new download hook. Minimal change with no logic modifications.

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[jpople]

Code looks good and tested in Vercel environment, all looking good to me.