Export Negative News

The feed as a styled Excel digest, uploaded to S3 and handed back as a presigned URL — the same shape every other table export returns.

The client names the rows rather than re-describing its filters. It can: GET /all hands it the whole feed, so the rows it has filtered and sorted are every matching hit and only the 20 rendered are a page. That keeps the workbook in the reader's own sort order, and keeps the filter rules (a multi-select per column, a range over freeform when text) in one place rather than in a second copy here that has to agree with the browser's.

Rows still resolve against the caller's own feed, so a hit_key for a company they cannot see resolves to nothing. Gated like GET /all.