The MegaTask review card was a static sibling of the scrollable chat list with
no height bound, so a tall batch overflowed the clipped container and stranded
the launch buttons off-screen with no scrollbar. It now owns the scroll area
(min-h-0 flex-1 overflow-y-auto), matching the pattern ChatMessages already uses.
confirm_live_batch's Redis idempotency guard (1h TTL) was acquired before the
build but only released via a success sidecar, so a build failure wedged the
session: every retry hit ServiceError("already in progress") -> HTTP 500 for an
hour. The build now releases the guard on any failure before the sidecar write,
so a retry re-attempts (and surfaces the real error) instead of being locked out.
Extracted _build_confirm_batch to keep the try/except thin.
Adds DB-backed tests for the panel the_work[].project_id shape, multi-cell
root-subtasks, dense same-repo collisions (both routes), and guard release.
Co-authored-by: Renn F <rennf93@users.noreply.github.com>
