List Errors Full

List errors most-recent-first with a slim-but-investigable payload. Each item also exposes:

• id / error_code so you can deep-link to GET /errors/{id} to fetch the full row (front/back logs, extras, full inputs).
• object_keys : R2 keys of any associated artifacts (audio uploads for podcast/labelize_speech, video chunks for vibe_motion, etc.) so you can retrieve the files from the bucket without re-reading the DB.
• r2_console_urls : ready-to-click Cloudflare dashboard URLs for each object key (same bucket, no auth math required). Capped at 200 per call.