When the multi-crawler fetch can't get article text (FT, WSJ, etc. return
403/JS-only shells to every crawler), fall back to the Internet Archive:
resolve the closest snapshot via the availability API, fetch the raw id_
version, and extract THAT into the Radical Reader with a 'via Wayback Machine,
archived DATE' source note. archive.today can't be used server-side (429 +
captcha on datacenter IPs) so it stays as the user-side button.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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