Sirius Studio only looked in its own folder, bns/<name>/. Every site
published the conventional way lives at bns/<label>/ (the s3 record),
or inline in the h record, so the editor opened those names as "new
site" with a template picker instead of the current build.
The gateway's site read gains a read-only ?src=live view that follows
the on-chain record: list and fetch from whatever bucket s3 points at,
or serve the h HTML as index.html. Writes are unchanged and still
confined to bns/<name>/.
The editor now starts from the live page when there is no draft:
relative image and link URLs are resolved against the public site URL,
stylesheets are inlined (cross-origin ones such as font CDNs are kept
as links and re-emitted on export), scripts dropped. When a draft
exists but the name serves something else, or index.html on Sia is
newer than the draft, a notice says so with a one-click import. An
"Import live site" button is always available. Verified with
aloevera.test, which is hosted at bns/aloevera/.
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