Custom subscription templates only received the lastOnline timestamp, so
template authors had to fake an online indicator by comparing it against
the current time, and the page was a one-shot server render with no way
to refresh usage without reloading the whole HTML.
The template context (and window.__SUB_PAGE_DATA__) now carries isOnline,
computed from the panel's own online-client tracking (local xray plus
remote nodes) at render time. The subscription URL also answers
?format=info with the page view-model as JSON — minus the links, with
emails deduplicated — so templates can poll live status cheaply. The
shared view-model construction moved into buildSubPageData/subPageContext
so the HTML page, the SPA payload and the info JSON cannot drift apart.
Also documents the previously injected but undocumented announce
template variable.
Unify remark generation around the Remark Template. Display contexts (Clients-page QR/Info modals and the HTML sub info page) now render the template name-only client/identity part instead of a hardcoded fallback; the subscription body keeps the full template on a client first link and name-only thereafter. The default template gains the email token so the client email shows by default again (#5532).
BuildPageData now splits each multi-link entry (one link per host of an inbound) into a separate row, so the sub page no longer collapses several host links onto a single mangled line. QR captions on the Clients QR modal and the sub page reuse the link fragment remark.