Paper Download — Agent Runbook

Slim runbook loaded when the skill is invoked. Configuration depth and human-facing reference live in the project docs:

• ../../../README.md — install + invoke (humans and agents)
• ../../../docs/BROWSER_FALLBACK.md — every browser-fallback knob
• ../../../docs/SUPPORTED_PUBLISHERS.md — per-publisher routing + tier table

Prerequisites (verify once per workspace)

1. auto_paper_download is importable. If not: pip install -e . from the repo root (add [browser] extra + playwright install chromium for browser fallback).
2. A .env exists in the cwd the scripts will run from. Minimum: CROSSREF_MAILTO (any real email). Missing creds don't error — they silently disable that path, so surface the warning to the user verbatim if creds are empty.

Pre-flight (per invocation)