download.kiwix.org routes the large Wikimedia-family ZIMs (Wikipedia,
Wikiversity, Wikibooks — including the flagship full Wikipedia) to
dumps.wikimedia.org, which enforces a User-Agent policy and returns HTTP
403 for requests with a missing or generic (axios/x) User-Agent. Because
doResumableDownload sent no User-Agent, every Wikimedia-hosted ZIM failed
to download while Kiwix-mirror-hosted ZIMs succeeded — so a curated set or
Easy Setup run would silently stall on exactly the highest-value content.
Add a descriptive User-Agent to the HEAD and GET requests. Verified
against the live mirror: default/empty UA -> 403, ProjectNOMAD UA -> 200/206.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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