fetch-preprint-recent

Fetch preprints from bioRxiv or medRxiv for a date window, normalize the records, and keyword-filter them.

Workflow

- [ ] Step 1: Validate inputs (server, from, to, keywords)
- [ ] Step 2: Page through the details endpoint until messages.cursor exhausted
- [ ] Step 3: Normalize each record to the canonical shape
- [ ] Step 4: Dedupe within the window (keep latest version per DOI)
- [ ] Step 5: Keyword-filter on lowercased title + abstract
- [ ] Step 6: Return matched records + a summary (total fetched, total matched, pages fetched)

Step 1 — Validate inputs