Export processing history (CSV/JSON)

[jeisaacs]

Summary

Allow users to export their processing history as CSV or JSON for auditing and reporting.

Why

• Gives power users a quick way to analyze throughput outside the UI
• Simplifies sharing logs with support or compliance teams
• Helps automate cleanup/retention policies

Proposal

• Add backend endpoints that stream logs in CSV/JSON formats
• Provide UI controls to trigger export with filters (date range, status, user)
• Ensure sensitive file paths are sanitized before export

Acceptance Criteria

• Users can download history in both CSV and JSON formats
• Exports respect applied filters and pagination
• Large exports stream without exhausting memory
• Documentation explains schema and sample workflows