The Theseus subpage on sirius.x had a hardcoded v0.0.4 with pinned download
URLs and pinned hashes — went stale within days (current is v0.3.5). Since
theseus.x is now the canonical Theseus site with its own /#download and
/#verify sections that its operator keeps current, delegate:
* Download section shrunk to a single 'Open theseus.x downloads' CTA.
Removed hardcoded version, per-build cards, size estimates. Added a
short note explaining why (sirius.x won't try to shadow theseus.x's
release notes).
* Verify section: sha256sum placeholder now takes '<downloaded-file>'
instead of a specific filename; hash-check link points at
theseus.x/#verify where the current release's hashes live.
Sirius.x/theseus becomes a small landing that says 'what Theseus is + how
it works' (evergreen); theseus.x owns everything version-sensitive.
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