The C0R3 rebuild queue only linked out to the logs page (logs →). Add an
inline live-log panel under the queue that streams the currently-running
rebuild's build output, so the operator watches progress without leaving the
page.
One panel keyed to the running entry's build_log_id (the queue runs one build
at a time), reusing the build-log SSE the logs page already uses
(GET /api/build-logs/id/{id}/stream; frames stdout_append/stderr_append/done).
It lives in its own container (#rebuild-live-log) outside rebuild-queue-section
so the queue's per-row re-render — rows rebuild as the build step advances —
never tears down the open stream; it reconnects only when the running
build_log_id changes and won't reopen a stream that already sent done. Sticky-
bottom scroll, collapsible, live/ok/fail badge, raw download. Hidden when
nothing is building; each row keeps its logs → link for full history.
Frontend-only — no backend change (endpoint + build_log_id already existed).
Closes#1860.